OPERATOR’S MANUAL BOP-MG 1KW HIGH POWER BIPOLAR POWER SUPPLY MODEL KEPCO INC. An ISO 9001 Company. BOP-MG 1KW POWER SUPPLY ORDER NO. IMPORTANT NOTES: 1) This manual is valid for the following Firmware Versions: FIRMWARE VERSION 4.08 and higher NOTE. 2) A Change Page may be included at the end of the manual. All applicable changes and revision number changes are documented with reference to the equipment serial numbers.
Declaration of Conformity Application of Council directives: 73/23/EEC (LVD) 93/68/EEC (CE mark) Standard to which Conformity is declared: EN61010-1:1993 (Safety requirements for electrical equipment for measurement, control and laboratory use) Manufacturer's Name and Address: KEPCO INC. 131-38 SANFORD AVENUE FLUSHING, N.Y. 11355 USA Importer's Name and Address: OPY C E V I T A T N REPRESE Type of Equipment: Component Power Supply Model No.
Conditions of Conformance When this product is used in applications governed by the requirements of the EEC, the following restrictions and conditions apply: 1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power supply is considered a component product, designed for “built in“ applications.
SAFETY INSTRUCTIONS 1. Installation, Operation and Service Precautions This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2, Pollution Degree 2. Hazardous voltages are present within this product during normal operation.
OPERATOR SAFETY INSTRUCTIONS Read these safety instructions, as well as the applicable installation and operating instructions contained in this manual before using the power supply. WARNING Do not touch the output terminals. The output is dangerous. Electric shock can cause injury or death. Do not remove the cover or disassemble the unit. There are no operator serviceable components or adjustments inside the unit.
LIST OF WARNINGS AND CAUTIONS PAGE WARNING/CAUTION 3-20 WARNING: For inductive loads, and especially superconducting magnet type loads, 3-20 WARNING: For both inductive loads and constant-current-type active electronic 3-21 WARNING: Accessing the BOP after the output is disabled in BATTERY mode is haz- 3-30 WARNING: Be sure that output power is OFF (Standby indicator lit) while connecting 3-35 WARNING: Dangerous voltages are present at the output terminals: Do not touch! 4-8 WARNING: The sense
LIST OF WARNINGS AND CAUTIONS PAGE WARNING/CAUTION 2-6 CAUTION: it is recommended that source power of external equipment connected to the Analog Port be applied through an isolating transformer To avoid ground loops or possible damage to the BOP due to incorrect equipment a-c wiring (e.g., defeating of ground connection). 2-8 CAUTION: The rack must provide support at the rear (within 6 inches of the rear panel). Optional slides can also be used (see PAR. 2.4.2).
LIST OF WARNINGS AND CAUTIONS PAGE WARNING/CAUTION energy from a constant current type load, set the current protection limits of the BOP above the maximum current expected from the load. 3-26 CAUTION: Before Pressing @ to enter the Saved Waveform Screen from the powerup screen, perform the following steps to avoid unexpected voltages or currents from previous settings being briefly applied to the load when the waveform is first executed.
TABLE OF CONTENTS SECTION PAGE SECTION 1 - INTRODUCTION 1.1 1.2 1.3 1.4 1.5 1.6 1.6.1 1.6.2 1.6.3 1.6.4 1.6.5 1.6.6 1.6.7 1.6.8 1.6.9 1.7 1.8 1.9 Scope of Manual ..................................................................................................................................... 1-1 General Description................................................................................................................................. 1-1 Specifications .........................................
TABLE OF CONTENTS SECTION 3.2.3 3.2.4 3.2.4.1 3.2.4.2 3.2.4.3 3.2.4.4 3.2.5 3.2.5.1 3.2.5.2 3.2.5.3 3.2.5.4 3.2.5.5 3.3 3.3.1 3.3.1.1 3.3.1.2 3.3.2 3.3.3 3.3.3.1 3.3.3.2 3.3.3.3 3.3.4 3.3.4.1 3.3.4.2 3.3.4.3 3.3.5 3.3.6 3.3.7 3.3.8 3.3.8.1 3.3.8.2 3.3.8.3 3.3.8.4 3.3.8.5 3.3.9 3.3.9.1 3.3.9.2 3.3.9.3 3.3.9.4 3.3.9.5 3.3.9.6 3.3.9.7 3.3.9.8 3.3.9.9 3.3.9.10 3.3.10 3.3.11 3.3.12 3.4 3.4.1 3.4.1.1 3.4.1.2 3.4.2 3.4.3 3.4.3.1 3.4.3.2 3.4.4 ii PAGE Turning the Power Supply On.................................
TABLE OF CONTENTS SECTION PAGE 3.4.4.1 Using Both Local/Digital and External Protection Limits .............................................................. 3-42 3.4.5 Monitoring Output Current Using an analog signal............................................................................ 3-43 3.5 Digital Remote Mode Programming ........................................................................................................ 3-43 3.5.1 Operating Features Available only by Remote Commands.......
TABLE OF CONTENTS SECTION 3.6.4.5 3.6.4.6 3.6.4.7 3.6.4.8 3.6.5 3.6.6 3.6.7 3.6.7.1 3.6.7.2 3.6.7.3 3.6.8 PAGE Data Separator............................................................................................................................ Message Unit Separator ............................................................................................................. Root Specifier................................................................................................................
TABLE OF CONTENTS SECTION B.12 B.13 B.14 B.15 B.16 B.17 B.18 B.19 B.20 B.21 B.22 B.23 B.24 B.25 B.26 B.27 B.28 B.29 B.30 B.31 B.32 B.33 B.34 B.35 B.36 B.37 B.38 B.39 B.40 B.41 B.42 B.43 B.44 B.45 B.46 B.47 B.48 B.49 B.50 B.51 B.52 B.53 B.54 B.55 B.56 B.57 B.58 B.59 B.60 B.61 B.62 B.63 B.64 B.65 B.66 B.67 B.68 B.69 PAGE MEMory:UPDate Command.................................................................................................................. OUTPut[:STATe] Command..............................
TABLE OF CONTENTS SECTION B.70 B.71 B.72 B.73 B.74 B.75 B.76 B.77 B.78 B.79 B.80 B.81 B.82 B.83 B.84 B.85 B.86 B.87 B.88 B.89 B.90 B.91 B.92 B.93 B.94 B.95 B.96 B.97 B.98 B.99 B.100 B.101 B.102 B.103 B.104 B.105 B.106 B.107 B.108 B.109 B.110 B.111 B.112 B.113 B.114 B.115 B.116 B.117 B.118 B.119 B.120 B.121 B.122 B.123 B.124 B.125 B.126 B.127 vi PAGE [SOURce:]LIST:SAMPle:VOLTage Command ...................................................................................... [SOURce:]LIST:SAMPle? Query ....
TABLE OF CONTENTS SECTION B.128 B.129 B.130 B.131 B.132 B.133 B.134 B.135 B.136 B.137 B.138 B.139 B.140 B.141 B.142 B.143 B.144 B.145 B.146 B.147 B.148 B.149 B.150 PAGE SYSTem:COMMunication:SERial:ECHO Command............................................................................ SYSTem:COMMunication:SERial:ECHO? Query .................................................................................. SYSTem:COMMunication:SERial:PACE Command ...........................................................
LIST OF FIGURES FIGURE TITLE PAGE 1-1 1-2 1-3 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16 3-17 3-18 3-19 3-20 3-21 4-1 4-2 4-3 A-1 B-1 B-2 B-3 B-4 B-5 B-6 High Power BOP Series Power Supply......................................................................................................... x 1000W BOP Power Supply, Outline Drawing.............................................................................................
LIST OF TABLES TABLE 1-1 1-2 1-3 1-4 1-5 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16 3-17 3-18 3-19 3-20 3-21 4-1 4-2 4-3 4-4 4-5 A-1 A-2 A-3 A-4 B-1 B-2 B-3 B-4 B-5 TITLE PAGE BOP 1000 Watt Model Parameters .............................................................................................................1-1 BOP General Specifications .............................................................................
FIGURE 1-1.
SECTION 1 - INTRODUCTION 1.1 SCOPE OF MANUAL This manual contains instructions for the installation, operation and servicing of the BOP series of 1000 Watt rack-mounted, 4-quadrant bipolar, programmable, voltage and current stabilized dc power supplies manufactured by Kepco, Inc., Flushing, New York, U.S.A. NOTE:This manual does not apply to units with Firmware Rev less than 2.0. 1.
TABLE 1-2. BOP GENERAL SPECIFICATIONS SPECIFICATION RATING/DESCRIPTION CONDITION INPUT CHARACTERISTICS a-c voltage nominal Frequency nominal range range Current Power factor 47 - 63 Hz 9.5A (7.5A)* maximum 6.4A (4.4A)* maximum Source 0.99 minimum Sink 0.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION OUTPUT CHARACTERISTICS (Continued) Digital Programming resolution / accuracy Digital Readback resolution / accuracy Voltage 14 bits / 0.03% Current 14 bits / 0.1% Voltage Limit 12 bits / 0.3% Current Limit 12 bits / 0.5% Voltage 16 bits / 0.05% Current Sustain Output update rate Analog Programming accuracy Analog Readback accuracy Voltage 0.1% of rating Current 0.1% of rating Voltage Limit 0.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION OUTPUT CHARACTERISTICS (Continued) 2 series x 2 parallel 3 series x 2 parallel Series-parallel Operation Power-up timing (parallel, series and series-parallel systems) 15 Sec max. Digital Voltage and current limited in four quadrants, adjustable between ±Internal minimum EOMIN or IOMIN (box) (see Figure 1-3) and ±1.01 EONOM or IONOM.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION PROGRAMMING/DISPLAY CHARACTERISTICS (Continued) Trigger Port (See Table 2-3) Shutdown (pin 2): Operation of pin 2 is controlled by OUTP:CONT command (see Par. B.15). Settings are STANDBY (default), HIGH, LOW, OFF. Either OFF or STANDBY is required if using OUTP ON and OUTP OFF commands to control the output. STANDBY (default) External Trigger Shutdown (Isolated input.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION FUNCTION GENERATOR CHARACTERISTICS (Continued) Types of Basic waveforms Maximum number of points per basic waveform Sine (Sinusoidal waveform) Triangle (Triangular waveform) Pos. Ramp (Ramp waveform) Neg.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION FUNCTION GENERATOR CHARACTERISTICS (Continued) LIST command characteristics for “string” type waveform (Remote only) Maximum number of points • For single (global) dwell time: 5900 (high resolution) • For <122 different dwell times: 3933 • For >126 different dwell times: 2950 Note: Dwell time list must match (balance) the amplitude list. Dwell time range: 93µS to 34mS.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION FUNCTION GENERATOR CHARACTERISTICS (Continued) Amplitude Range Main Channel Voltage (Volts p-p) 0 to 2 x EONOM Sine, Triangle, Square, ±Ramp Current (Amperes p-p) 0 to 2 x IONOM Sine, Triangle, Square, ±Ramp Protection Limit Channel .
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION SAVE/RECALL CHARACTERISTICS (See PAR. 3.3.8) Number of Locations 99 Parameters Saved or Recalled All parameters saved for power-up. Mode of operation Reference type Voltage, Current or External For External the operating mode is determined by signal at I/O Port; no signal selects voltage mode (see PAR. 3.4.2).
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION MISCELLANEOUS FEATURES (Continued) Power-up Settings Mode Voltage (default) or Current Main Channel Internal (default), External or External Reference Type Reference Level (Gain Mode) Protection Limit Channel Reference type Protection Limit Levels (Internal) Output status Password Types Internal (default), External or Lesser Limit EOMIN or IOMIN to 1.
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION PHYSICAL CHARACTERISTICS Dimensions Weight, 1000W models English 5.25' X 19" X 21.5" HXWXD metric 133.3mm X 482.6mm X 546.1mm HXWXD English 53 lbs metric Connections Source power Load connections Sensing Output Terminal Block Nickel-plated copper bus bars 7-pin terminal block Default: 3 links installed for local sensing and ground network connected.
1.738 [44.15] 23.863 [606.12] 22.000 [558.79] 21.564 [547.73] 20.000 [508.00] 21.439 [544.54] 22.800 [579.11] 18.805 [477.63] 18.018 [457.64] 17.675 [448.93] 16.835 [427.60] 18.235 [463.16] 18.985 [482.21] FIGURE 1-2. 1-12 2.215 [56.27] 1.470 [37.34] 5.218 [132.54] OBROUND 0.25x0.453 (4 LOC.
REAR VIEW REMOVE FEET FOR RACK MOUNTING. 22.000 [558.79] SLIDES TRAVEL DISTANCE: 23.000 [584.2] SEE NOTE 6. FIGURE 1-2.
1.4 LOCAL CONTROL Either the front panel keypad or the adjust control can set and adjust output voltage and current under local control. The display provides a digital display of output voltage and current as well as a pictorial display of real-time analog voltage and current meters. The keypad includes five function keys which provide access to the menu-driven functions of the unit.
Up to 16 user-generated waveforms can be stored for later use. The user selects the operating mode, positive and negative protection levels, and a count (the number of times the waveform is to be repeated). Each waveform consists of up to 10 segments; each segment is assigned one of six basic waveform types: square, sine, triangle, negative ramp, positive ramp and level. Depending on the waveform type, frequency, peak-to-peak amplitude, offset, and start and stop phase angle are then assigned by the user.
1.6.9 ENERGY RECUPERATION The BOP is a four-quadrant device as shown in Figure 1-3. Operating as a source, it delivers energy into a passive load, and as a sink it operates as an electronic load, absorbing and dissipating energy from an active load.
FIGURE 1-3.
TABLE 1-5. ACCESSORIES ITEM FUNCTION PART NUMBER Mating Connector, Trigger Mates with Trigger port. 142-0527 (Kepco) SP2501 (CUI Stack) IEEE 1118 (BITBUS) Mating connector Allows connection to IEEE 1118 (BITBUS) port. 142-0485 (Kepco) KMDLA-5P (Kycon Inc.) IEEE 488 Cable, (1 meter long) Connects BOP power supply to GPIB bus. SNC 488-1 IEEE 488 Cable, (2 meter long) Connects BOP power supply to GPIB bus. SNC 488-2 IEEE 488 Cable, (4 meter longs) Connects BOP power supply to GPIB bus.
SECTION 2 - INSTALLATION 2.1 UNPACKING AND INSPECTION This instrument has been thoroughly inspected and tested prior to packing and is ready for operation. After careful unpacking, inspect for shipping damage before attempting to operate. Perform the preliminary operational check as outlined in PAR. 2.3. If any indication of damage is found, file an immediate claim with the responsible transport service. 2.2 TERMINATIONS AND CONTROLS a) Front Panel: Refer to Figure 3-1 and Table 3-1.
TABLE 2-1.
TABLE 2-3. TRIGGER PORT PIN ASSIGNMENTS CONNECTOR PIN SIGNAL NAME 1 LOGIC GND FUNCTION Return for TRIGGER and SHUTDOWN signals. SHUTDOWN or OUTPUT ON-OFF Operation of pin 2 is controlled by OUTP:CONT command (PAR. B.15): STANDBY, HIGH, LOW, DISABLED. Factory default is STANDBY upon power-up: Logic 0 ((0 volts or short circuit) for at least 100µS disables the output and puts the unit in standby, however Logic 1 (TTL or 5V CMOS level) does NOT enable the output.
TABLE 2-5. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS CONNECTOR PIN RS 232 PORT A1J5 SIGNAL NAME FUNCTION 1 RTS Request To Send (protocol not used) 2 RXD Receive Data 3 TXD Transmit Data 4 LOGIC GND Logic Ground 5 LOGIC GND Logic Ground 6 CTS Clear To Send (protocol not used) TABLE 2-6.
TABLE 2-8. PARALLEL/SERIAL PROTECT IN PORT PIN ASSIGNMENTS CONNECTOR PIN SIGNAL NAME Anode of LED optocoupler which is part of protection circuit for parallel or series combination. Cathode of LED is connected to PARALLEL/ SERIAL PROTECT OUT PORT (A2A5J2) pin 1 (see Table 2-9). When activated, the optocoupler shuts down the unit. LEDs from all units of the parallel or series combination are connected in series.
TABLE 2-10. ANALOG I/O PORT INPUT/OUTPUT PIN ASSIGNMENTS CONNECTOR PIN SIGNAL NAME FUNCTION CAUTION: IT IS RECOMMENDED THAT SOURCE POWER OF EXTERNAL EQUIPMENT CONNECTED TO THE ANALOG PORT BE APPLIED THROUGH AN ISOLATING TRANSFORMER TO AVOID GROUND LOOPS OR POSSIBLE DAMAGE TO THE BOP DUE TO INCORRECT EQUIPMENT A-C WIRING (E.G., DEFEATING OF GROUND CONNECTION).
2. With no load connected, set POWER switch to the ON position. Each time the unit is turned on an internal self-test is performed. The alphanumeric display (LCD) shows the processor firmware revision history and lists various tests performed during the internal self-test. As each test is completed, PASS or FAIL is displayed. If all tests pass, the unit goes into the default mode. If a failure occurs, the failure is displayed. Figure 3-3 shows the factory configured power on defaults displayed on the LCD.
2.4 INSTALLATION 2.4.1 RACK MOUNTING The unit is shipped with four feet attached to bottom of the unit which must be removed prior to installation (see Figure 1-2). The BOP is designed to be rack mounted in a standard 19-inch wide rack using the mounting ears (supplied) attached to the front panel (see Figure 1-2). Allow a minimum of 7/8 in. (22.2 mm) above and below the unit to permit air intake necessary for proper cooling of the unit.
One of the most important considerations in establishing a successful grounding scheme is to avoid GROUND LOOPS. Ground loops are created when two or more points are grounded at different physical locations along the output circuit. Due to the interconnection impedance between the separated grounding points, a difference voltage and resultant current flow is superimposed on the load.
The stabilized d-c power supply is definitely not an ideal voltage or current source, and practical interfaces definitely fall short of the ideal. All voltage-stabilized power supplies have a finite source impedance which increases with frequency, and all current-stabilized power supplies have a finite shunt impedance which decreases with frequency.
2.5.6 LOAD CONNECTION USING LOCAL SENSING Figure 2-2 shows a typical configuration using local sensing and a grounded load; for local sensing with an isolated (“floating”) load, do not install the ground connection (see Figure 2-2, Note 2). 2.5.7 LOAD CONNECTION USING REMOTE SENSING Figure 2-3 shows a typical configuration using remote sensing and a grounded load; for remote sensing with an isolated (“floating”) load, do not install the ground connection (see Figure. 2-3, Note 2).
FIGURE 2-2. N/C OUT S OUT MON GND GND NET FIGURE 2-3.
2.7.3 SETUP FOR REMOTE OPERATION VIA GPIB With all power off, connect the load to the BOP using either local or remote sensing. If units are to be connected in series or parallel, refer to PAR. 2.8. Connect the GPIB connector to the GPIB port (see Figure 2-1 and Table 2-1). Turn power on and refer to PAR. 3.2 for power supply basics and PAR. 3.5 for remote mode programming. The default GPIB address is 6; to change it refer to PAR 3.5.3.1.
2.8.1 MULTIPLE UNIT CONNECTIONS Before powering up the units to be configured, first connect the units in parallel or series. Figures 2-4 (local sensing) and 2-5 (remote sensing) show the connections for three parallel-connected units; Figures 2-6 (local sensing) and 2-7 (remote sensing) show the connections for three series-connected units. These figures allow other configurations, e.g., five parallel-connected units or two series connected units, etc. to be easily deduced.
FIGURE 2-4.
FIGURE 2-5.
FIGURE 2-6.
FIGURE 2-7.
FIGURE 2-8. TYPICAL MASTER/SLAVE PROTECTION INTERCONNECTIONS Upon startup, PAR/SER PROT IN PORT pin 8 of the master goes low, and stays low until all slaves are powered up. Normal power up of a unit causes the transistor connecting PAR/SER PROT IN PORT pin 2 and PAR/SER PROT OUT PORT pin 2 to conduct.
TABLE 2-12. MULTIPLE UNITS MENU FUNCTIONS SETTING CHOICES (BOLD = Factory Default) FUNCTION CONFIGURATION STANDALONE PARALLEL SERIES MASTER 2 X 2 MASTER 3 X 2 STANDALONE - Unit operates independently, no additional units connected. PARALLEL - Unit to be configured for parallel operation; opens UNIT TYPE and CONNECTION TYPE options shown below. Used when units are connected in parallel (increase output current) (see NOTE below).
b. From the Multiple Units menu, highlight Configuration (use ADJUST control or the Y or U keys) and press ! to modify. Select Series, Parallel, Master 2X2 or Master 3X2, press $ to apply the change. c. If Series or Parallel was selected in step b above, Connection Type shows Series or Parallel as selected above. Highlight Unit Type and press ! to modify. Highlight Master +1, Master +2, Master +3, or Master +4 (Master +3, or Master +4 not permitted for series connections) and press $ to apply the change. d.
c. Protection. The Protection stage is active when the message “Checking Protection Connections” is displayed at the bottom of the power-up master module screen (Figure 2-9). The protection connections are evaluated to ensure the ability to shut off the master. If the protection stage fails (indicated by an external fault indication), possible causes are a) an external device (if used) connected to the protection circuits to initiate master shutdown, or b) improperly installed protection cables.
TABLE 2-13. SLAVE STATUS MESSAGE DEFINITIONS Slave Status Message Displayed on Master Power Up Screen (see Figure 2-9) Ready MEANING Unit is ready for operation. STANDBY If unit’s FAULT indicator is off, hardware error has NOT been detected, output is ready to be turned on No Answer Unit is not responding to polls via BITBUS. Faulted Unit’s FAULT indicator is on to indicate a hardware error has been detected.
VOLTAGE SOURCE 0.0000 FIGURE 2-11. 2.8.5 POWER ON DEFAULT SCREEN FOR SLAVE UNIT OPERATING INSTRUCTIONS FOR MULTIPLE UNIT COMBINATIONS 1. Apply power to the multiple units. If the master is in STANDBY, depress STANDBY key on the master to apply power to the output terminals. (To power down the combination, first press STANDBY key on the master to disable the output, then turn off the slaves, followed by the master. 2.
2.8.6 RESTORING A UNIT TO STANDALONE OPERATION 1. Turn off power to the master. 2. Turn off power to the slave(s). 3. Turn on power to the unit to be restored to standalone operation. 4. From the power-up screen press % to enter the General Setup Menu. Highlight Series/ Parallel and press ! to view the Multiple Units menu (see Table 2-12). When prompted, enter ADMIN2 password (see PAR. 3.2.4.4) before continuing. 5. Press @ to return to factory defaults. This configures the unit as a standalone unit. 6.
FIGURE 2-12.
SECTION 3 - OPERATION 3.1 GENERAL This section explains how to operate the 1000 Watt BOP Power Supply. The power supply can be operated either in Local mode (see PAR’s. 3.2 and 3.3) using the front panel keypad, ADJUST control and graphical display, or in Remote mode. NOTE: Unless otherwise noted, operating instructions start from the power-up screen (see either Figure 3-3 or Figure 3-4). Press % to exit submenus and return to the power-up screen. Remote mode can either be analog or digital.
TABLE 3-1. FRONT PANEL CONTROLS AND INDICATORS NUMBER (FIGURE 3-1) CONTROL/INDICATOR 1 POWER ON/OFF circuit breaker A7CB1 2 Alphanumeric/graphic Display (LCD) Displays output voltage and current as well as information in response to keypad and ADJUST control entries. Displays function of soft function keys F1 through F5, and displays information as required to perform all local functions. 3 STANDBY indicator Lights to indicate when the unit is in Standby mode.
TABLE 3-2. SPECIAL KEY FUNCTIONS KEY FUNCTION STANDBY The STANDBY key toggles the unit between output on (enabled, STANDBY indicator off) and output off (disabled, STANDBY indicator on). When on, the output goes to the programmed settings. Behavior of the unit in Standby (Output off) is determined by the options chosen for Load Type (see PAR. 3.3.6). The default Load Type is ACTIVE, i.e.
VOLTAGE 0.0000 FIGURE 3-3. POWER-UP SCREEN SHOWING GRAPHIC METERS VOLTAGE 0. 0000 FIGURE 3-4. POWER-UP SCREEN SHOWING TIME LINE GRAPH When in Voltage mode, the power supply will (within the configured and rated limits) provide the programmed output voltage. Current is determined by the load, and cannot exceed the Current Protect limits. Mode displayed at the upper right is VOLTAGE SOURCE. If the protect limit is reached, CPROTECT is displayed.
When in Sink mode, the power supply is operating as an electronic load, absorbing and recuperating the energy of an active load. Recuperated energy is passed back into the a-c source power line. Mode displayed at the upper right is VOLTAGE SINK when the unit is in voltage mode and an external constant current is injected into the BOP. Correspondingly, CURRENT SINK is displayed when the unit is in current mode and an injected current from an external constant voltage is presented at the output of the BOP.
If the display is not viewable, press # twice. The display will cycle through the range of contrast settings. Press # again to lock in the preferred contrast. To select between the meter (Figure 3-3) and time line (Figure 3-4) displays refer to PAR. 3.2.5.4. To change the default power-up settings, refer to PAR. 3.3.7. 3.2.4 HOW TO ACCESS THE MENUS From the power-up screen, pressing the Function keys indicated on the LCD opens the associated menu.
3.2.4.
reconfiguration of the BOP, yet allow access to qualified personnel. These password levels apply only to local operation. When in remote, only the main password is accessible, acting as a general password (see PAR B.141). The functions that can be password protected are Interface settings, Max/Min settings, Load type, Test, Calibration, Power-up Settings, and Keypad lockout at power-up (see Figure 3-5 for factory default password settings).
1. Enter the first character of the password using the keypad or ADJUST control (see PAR. 3.2.4.2 for entry of alphanumeric characters). (To change the password, refer to PAR. 3.2.4.3.) 2. Press T to move to the next character and repeat step 1 for the next character of the password. 3. Repeat steps 1 and 2 until the correct password is displayed, then press protected setting or menu will now be accessible ! to verify.
To change the background, press # from the power-up screen, Highlight Background, press !, highlight Black or White, then $ to save. Press $ exit and save for power-up or % to apply the changes (without saving for power-up) and exit. TABLE 3-3. DISPLAY (OPERATOR CONVENIENCE) MENU FUNCTIONS SETTING CHOICES (BOLD = Factory Default) FUNCTION NOTE: To save any of the functions listed below for power-up it is necessary to first change SAVE DISPLAY CHG at the password setup (see PAR. 3.2.4.
3.2.5.3 ENABLING/DISABLING AUDIBLE BEEPS From the power-up screen (Figure 3-3), press #, then refer to Table 3-3 and modify the setting using the techniques described in PAR. 3.2.4). Even though audible beeps are set to off, the beeps will still sound upon power-up or detection of a power supply fault. 3.2.5.
3.3.1.2 LOCAL PASSWORD PROTECTION AT POWER-UP It is possible to require a password before the front panel controls can function when the unit is powered up. From the power-up screen, press %, highlight password, then !. Enter Admin 2 password (see PAR. 3.2.4.4) and press ! to verify. Under Menu Protection, highlight Keypad @ Pwr-up and press F1. Highlight on of three password settings and press $ to save. Then press $ to save for power-up (or % to exit without applying the changes).
a. Use the ADJUST control to increase or decrease the main channel setting (e.g., voltage when the unit is in voltage mode). Start with the most significant digit of the desired value, then use T to highlight the next digit. For fine adjustment press the ADJUST control in while rotating the knob to modify the least significant digit. b. Enter the desired value on the keypad using the number keys. For example, to program the BOP to 75.8V, press the following keys in order 75.8 then press ENTER.
TABLE 3-4. VOLTAGE AND CURRENT PARAMETER DEFINITIONS (CONTINUED) Term Definition Minimum (box) +Voltage Protect Min –Voltage Protect Max Current mode only. Minimum (positive) setting for +Voltage Protect and maximum (maximum negative) setting for –Voltage Protect. Values of ±Voltage Protect between +Voltage Protect Min and –Voltage Protect Max (near zero) are not allowed. This zone (also referred to as the minimum (box) is automatically calculated by the BOP (see Figure 1-3).
VOLTAGE CURRENT 0.0000 0.0000 FIGURE 3-6. GENERAL SETUP MENU VOLTAGE 0.0000 FIGURE 3-7. VOLTAGE SOURCE CURRENT 0.0000 VOLTAGE SOURCE MAX/MIN SETTINGS MENU Selection of Bipolar does not immediately change the protect limit values; it changes how the protect settings are displayed and set from the power-up screen. So if maximum/minimum protection limits were set to different values, (e.
3.3.3.2 UNDERSTANDING VOLTAGE AND CURRENT PROTECT LIMITS These values are the references for the complementary channels: voltage in current mode and current in voltage mode. The range for these values is between a minimum (box) value (see Figure 1-3) and 1% above the rated nominal value (see PAR. 3.3.4.2). If the unit is in voltage mode, it will enter current protect mode when the load demands more current and energy than permitted by the ±current protect settings.
TABLE 3-5. MAX/MIN SETTINGS MENU SETTING Protect Entry CHOICES (BOLD = Factory Default) BIPOLAR INDEPENDENT FUNCTION BIPOLAR - Causes a single protection limit value (one for voltage, one for current) to apply to both ± limits. Only one value is displayed and edited from the front panel. (see PAR. 3.3.3.1.) INDEPENDENT - Allows + and – protection limits to be set independently. from the front panel (see PAR. 3.3.3.1 for considerations when using remote mode).
capable of delivering ±28A in current mode can be configured to allow current to be adjusted from –0.5A to +10A by setting –Current Min to –0.5 and +Voltage Max to +10. Adjustment range is between 0 and EOnom for voltage and 0 and IOnom for current. Note that these software limits are not the same as the Protect Limits described in PAR. 3.3.4.2. The main channel software limit values can be lowered (closer to zero) by the user, e.g., to prevent inadvertent damage to a specific circuit under test.
CAUTION: WHEN WORKING WITH ACTIVE LOADS, ALWAYS ADJUST THE BOP PROTECTION LIMITS TO BE ABOVE THE MAXIMUM VALUES OF VOLTAGE OR CURRENT EXPECTED FROM THE LOAD. FOR EXAMPLE, WHEN THE BOP IS OPERATING IN VOLTAGE MODE SINKING ENERGY FROM A CONSTANT CURRENT TYPE LOAD, SET THE CURRENT PROTECTION LIMITS OF THE BOP ABOVE THE MAXIMUM CURRENT EXPECTED FROM THE LOAD. 1. Press % from the power-up screen to enter the General Setup menu, then highlight Max/Min Settings and press ! to view.
3.3.6 DETERMINING HOW THE UNIT RESPONDS WHEN OUTPUT IS OFF (LOAD TYPE) TABLE 3-6. POWER SUPPLY BEHAVIOR WHEN OUTPUT IS SET TO OFF LOAD TYPE SETTING If unit was in Voltage Mode when output OFF command issued. If unit was in Current Mode when output OFF command issued. ACTIVE • • • • Unit remains in voltage mode. Voltage set to zero. Both ± Current Protect set to maximum. Both ± Voltage Limit remain at maximum. • • • • Unit set to voltage mode. Voltage set to zero.
RESISTIVE. This mode, as the name suggests, is useful for resistive loads. Table 3-6 indicates how the power supply responds to a command to go from Output ON to OFF. WARNING Accessing the BOP after the output is disabled in BATTERY mode is hazardous because (1) high current arcing is possible and (2) either the external battery voltage, or the voltage (±Voltage Protection max) on the BOP output terminals may be dangerous.
• ues for protection limit channels (bipolar limits), voltage for current mode and current for voltage mode. Table 3-7 illustrates the relationship between Mode, Main Channel, Protection Type and Levels settings. Output: on (may be on or off) (see PAR. 3.3.5) To change the default settings refer to the applicable paragraph(s) specified above as needed, then from the power-up screen press %. Highlight Power-up Settings and press !. (If a Password is required, see PAR. 3.2.4.4 for instructions.
3.3.8 STORING/RECALLING POWER SUPPLY OUTPUT SETTINGS The power supply settings (mode, main channel reference type and setting, protection limit type and setting and output status) can be stored in one of 99 memory locations for later recall. This feature is accessible from the front panel by pressing ! from the power-up screen to view the Saved Settings screen (Figure 3-8). For a description of abbreviations used, refer to PAR. 3.3.8.1 To view previously saved settings refer to PAR 3.3.8.3.
TABLE 3-8. SAVE/RECALL MENU (CONTINUED) PARAMETER CHOICES (BOLD = Factory Default) FUNCTION INTERNAL EXTERNAL LESSER LIMIT INTERNAL - Allows limits to be controlled by POSITIVE and NEGATIVE values. EXTERNAL: Allows limits to be controlled by analog signals applied to the analog port (see PAR. 3.4.4). LESSER LIMIT: Allows protect limit to be automatically selected from either 1) the external analog voltage applied to the Analog I/O port or 2) the value set in the POSITIVE and NEGATIVE fields.
VOLTAGE CURRENT 0.0000 0.0000 FIGURE 3-8. VOLTAGE SOURCE SAVED SETUPS MENU 2. Use the U and Y keys to highlight the desired memory location; To erase a highlighted memory location, press #. The list will show erased locations as Empty. 3. Press ! to see the details stored in the highlighted location. 4. Once the details are displayed, use the U and Y keys to highlight the desired parameter.
3. Highlight an Empty location and press $ to save to the highlighted location, or press % to abort the copy. 3.3.8.5 APPLYING SAVED SETTINGS TO THE OUTPUT (RECALL) 1. Press ! from the power-up screen to enter the Save/Recall menu. 2. Use the U and Y keys to highlight the desired memory location. When the desired location is highlighted, press ! to view the detailed settings before execution, or press @ to apply the settings to the output. Refer to PAR. 3.3.8.3 to modify a setting before execution. 3.3.
VOLTAGE CURRENT 0.0000 0.0000 FIGURE 3-9. 3.3.9.3 VOLTAGE SOURCE SAVED WAVEFORMS MENU UNDERSTANDING HOW WAVEFORMS ARE GENERATED Waveform are generated by the BOP by producing a series of discrete output levels (points) in a prescribed pattern. In the case of sine, triangle and ramps, this produces an output that conforms to an approximation of the selected waveform type. The number of points available for a waveform is limited to 3933 for all segments.
TABLE 3-9. SINE, TRIANGLE AND RAMP WAVEFORM FREQUENCY VS. POINTS Frequency (See Notes 1, 2, and 3) From 0.01Hz Total Points To 4 Frequency (See Notes 1, 2, and 3) From Total Points To 2.7Hz 3840 55.5Hz 66.5Hz 160 2.71Hz 3.6Hz 2880 66.6Hz 88.7Hz 120 3.71Hz 5.5Hz 1920 88.8Hz 118.3Hz 90 5.6Hz 8.3Hz 1280 118.4Hz 147.9Hz 72 8.4Hz 11.0Hz 960 148Hz 177.4Hz 60 11.1Hz 14.7Hz 720 177.5Hz 221.8Hz 48 14.8Hz 22.1Hz 480 221.9Hz 295.8Hz 36 22.2Hz 33.2Hz 320 295.81Hz 354.
3.3.9.5 VIEWING STORED WAVEFORMS After observing the precautions of PAR. 3.3.9.1, press @ from the power-up screen to access the Saved Waveforms screen (Figure 3-9). Use Y or U or the encoder to highlight the name of a previously saved waveform, then press ! to view the Waveform Settings screen (see Figure 3-10). The lower half of the LCD shows a representation of the programmed waveform.
To change the Waveform Stop setting, press # from the power-up screen (Figure 3-3), Highlight Waveform Stop, press !, highlight Standby, Last Level or Current Lvl, then $ to save. Press $ exit and save for power-up or % to apply the changes (without saving for power-up) and exit. While the waveform is executing, the display shows a graphic of the programmed waveform (repeating segments only) below the message Waveform Executing.
TABLE 3-11. WAVEFORM SEGMENT DETAILS MENU SETTING Type CHOICES FUNCTION Square Pos Ramp Neg Ram Triangle Sine Level Trigger Square - Square wave, bipolar, starts with positive excursion (see Note 1). Pos Ramp - Increasing ramp, bipolar (see Note 1). Neg Ramp - Decreasing ramp, bipolar (see Note 1). Triangle - bipolar, starts with positive excursion, start/stop angle may be user controlled (see Note 1).
3. Refer to Table 3-12 and enter the desired settings for Mode, Positive and Negative Protection and Count. These settings apply to all waveform segments. (Note that the setting for mode cannot be changed once it has been saved; to change the mode, create a new waveform.) For each parameter listed in Table 3-12 use Y or U or ADJUST to highlight the parameter, then press ! to edit, change the parameter, then press $ to save or % to abort and exit. TABLE 3-12.
FIGURE 3-11. SAMPLE WAVEFORM 2. The initial waveform settings are displayed (see Table 3-11 and Table 3-12 for parameter details. Use ! to modify the initial settings for the waveform. For each parameter, use $ to save the setting. Name Mode Protection Positive Negative Count Segment Type Frequency (Hz) Amplitude (p-p) Offset CAP CHARG VOLTAGE 10 10 0 Neg Ramp 50 4 8 When all settings are complete, press $ to save for power-up.
4. From the Waveform Settings screen, highlight segment LEVEL 0.002s 0.00 I and press @ to insert a new segment. Use ! to modify the following settings of the new segment. For each parameter, use $ to save the setting. Type Period (Sec) Offset Level 0.001 1.5 When all settings are complete, press $ to save for power-up. This step creates a 1.5V level of 1ms prior to the 0V level. This segment is automatically set to Initial since the previous segment is set to Initial.
$. Then highlight a waveform location designated Empty and press $ to save or % to abort the change and exit. The copied waveform may then be modified and saved with a new name if desired (see PAR. 3.3.9.7). 3.3.10 RESET CAUTION: PRESSING RESET WILL CAUSE VOLTAGE TRANSIENTS TO APPEAR AT THE OUTPUT WHICH MAY DAMAGE A CONNECTED LOAD. SWITCH IS RECESSED TO PREVENT INADVERTENT ACTIVATION.
3.3.12 ERROR MESSAGE EXPLANATIONS When a key press is not accepted, an error message is displayed at the bottom of the screen. Although recovery from most operator errors is obvious and simple, Table 3-14 lists all the error messages along with associated explanations as to why they occurred. TABLE 3-14. ERROR MESSAGE EXPLANATIONS ERROR MESSAGE EXPLANATION General Multiple Decimal places not supported Decimal key was pressed while to the right of the existing decimal point.
TABLE 3-14. ERROR MESSAGE EXPLANATIONS (CONTINUED) ERROR MESSAGE EXPLANATION Unit in STANDBY - Please Change Output must be on for the waveform to be executed. press STANDBY key to set output on then press to run the waveform Can not delete Single Segment - use F1 to Change Waveform must have at least one segment. Can not delete the empty segment. “End of Segments” was highlighted when segment and try again. $ # - Erase was pressed. Move highlight to valid Entry not Empty, Use F1 to change.
FIGURE 3-12. REMOTE SHUTDOWN USING EXTERNAL POWER, STANDALONE OR MULTIPLE UNITS FIGURE 3-13. FIGURE 3-14. 3.4.1.2 REMOTE SHUTDOWN USING INTERNAL POWER, STANDALONE UNITS REMOTE SHUTDOWN USING INTERNAL POWER, MULTIPLE UNITS, REMOTE STANDBY A standalone unit or a multiple unit configuration (parallel, series or series-parallel) can be set to STANDBY status by applying a remote signal to the TRIGGER PORT as shown in Figure 3-15. For multiple unit configurations this signal must be applied to the master.
maximum delay of 200 mS and the STANDBY indicator goes on. Depressing the STANDBY key or sending the OUTP ON command via the remote interface restores the unit to the previous state and the STANDBY indicator goes off. FIGURE 3-15. 3.4.2 REMOTE STANDBY, STANDALONE OR MULTIPLE UNITS VOLTAGE/CURRENT MODE CONTROL The mode of operation, voltage or current, can be programmed externally by applying a signal at pin 2, referenced to pin 9, of the Analog I/O port.
2. To return to digital or local control, from the power-up screen press $, then highlight Reference Input and press !. Highlight Internal and press $ to save. Then press % to apply the change and exit. TABLE 3-15.
input signal exceeds the limit value (either ±10V if the software limit is set to nominal, or a lesser voltage for a user-determined software limit) clipping of the output voltage or current to the limit will occur. NOTE: If the system limits have been modified (PAR. 3.3.4), the output of the power supply will never exceed the modified system limits. E.
3.4.4 EXTERNAL PROTECTION LIMITS When PROTECTION LIMIT on the Reference Menu is set to EXTERNAL, the protect limits are determined by four analog signals referenced to Ground (pin 12) which are applied to the Analog I/O Port (see PAR. 3.4.4). To be functional this feature must first be configured from the front panel. From the power-up screen press $, and highlight Protection Limit. Press ! to modify, then highlight External and press $ to save.
3.4.5 MONITORING OUTPUT CURRENT USING AN ANALOG SIGNAL The BOP provides an output analog signal, 0 to ±10V, that is proportional to the output current which is always available. For the master of a parallel or series configuration this signal is proportional to the output current of the parallel or series combination. This signal is available at pin 3, referenced to pin 10, of the Analog I/O port.
1. Minimize programmed mode (voltage or current) changes. Unless absolutely required by the test parameters, allow the power supply to automatically switch modes as determined by the load. This will improve response time and reduce undesirable transients. 2. Once the mode (voltage or current) is programmed, program the active parameter to zero and the complementary limit parameter to the maximum anticipated for application. Then program only the active parameter.
#include #include #include #include /*Overhead for the use of a NATIONAL INSTRUMENTS gpib interface */ int unit_desc; // handle for the national instruments controller int GPIbus=0; // GPIB card 0 int adr=6; // Power Supply address char status_byte; // status byte from the power supply #define MAV 0x10 /* bit 4 of the status byte is the Message AVailable bit by 488.
3.5.3.1 GPIB PORT SETUP The following paragraphs describe the how to configure the GPIB port. 3.5.3.1.1 CHANGING THE GPIB ADDRESS The default address is 6. To change the GPIB address press % from the power-up screen, then press ! to enter the Interface menu (see Table 3-16) Highlight GPIB Address and press !, then use the number keys to enter the desired address and press $ to save. Press $ to save for power-up or % to apply the changes (without saving for power-up) and exit. TABLE 3-16.
3.5.3.1.3 DETERMINING WHETHER *RST COMMAND SETS THE OUTPUT OFF OR ON The user can control whether the *RST command (see PAR. A.11) sets the output on or off. Table 3-17 describes how the unit operates depending on how *RST set Output is configured, and the load type selected. From the power-up screen press %, and note whether “*RST set Output” setting is as desired. To modify highlight Interface Settings (see Table 3-16) and press !, then highlight On or Off and press ! to save.
3.5.3.2.3 CONFIGURE PROMPT MODE From the power-up screen press %, then press ! to enter the Interface menu (see Table 316). Highlight Serial Prompt and press !, highlight the desired option and press $ to save, then press % to apply the changes (without saving for power-up) and exit, or press $ to save for power-up (see PAR. 3.5.6.2.3 for a description of prompt mode). Enable - Enables Serial Prompt (see PAR. 3.5.6.2.3 for a description of prompt mode). Disable - Disables Prompt.
3.5.3.5.2 STATUS REPORTING DIFFERENCES IN BIT 4886 The status register responses from the BOP 1KW and the BOP BIT/4886 are very different. If these commands are used, then changes will be required in the user’s program. Commands affected are: SYST:OPER, SYST:QUES, *ESR and *STB. 3.5.3.5.3 TRIGGER OPERATION DIFFERENCES IN BIT 4886 The BOP/BIT 4886 only supports *TRG while the BOP 1KW supports TRIGGER:SOURCE EXTERNAL, BUS and IMMEDIATE.
TABLE 3-19. IEEE 488 (GPIB) BUS COMMAND MODE MESSAGES MESSAGE DESCRIPTION MNEMONIC COMMENTS ATN Attention Received DAC Data accepted Received or Sent DAV Data Valid Received or Sent DCL Device Clear Received (see PAR. 3.5.3.1.
Although the software drivers supplied by Kepco are VISA compliant, they also require the installation of the proper VISA driver from your GPIB card supplier. Many vendors supply this software with the hardware; National Instruments (http://www.natinst.com) has the driver for their cards available on the internet at a file transfer site (ftp://ftp.natinst.com — find the folder for support and VISA drivers). 3.5.
The BOP provides an additional option that allow handshake communication: the Prompt method. By using the handshake options (prompt and XON XOFF) the host controller can ensure that serial data interrupts occurring after parsing of the incoming message do not result in lost data. Figure 3-17 illustrates the echo mode, the prompt method and the default XON XOFF method described in the following paragraphs. FIGURE 3-17.
CAUTION: When the serial port has received an XOFF, the error message -400, QUE error will be placed in the queue to indicate the loss of transmitted information due to a received XOFF character. When XON is received, the unit will transmit all data in it's buffer followed by the exclamation character (!). This (!) character is not part of any message from the BOP and indicates the transmission buffer has been cleared and the BOP is idle.
3.5.6.4 ISOLATING RS 232 COMMUNICATION PROBLEMS A Loop Back test can be run from the front panel to aid in isolating RS 232 communication problems. The unit is designed to pass the test only with the Loop Back test connector (part of Kit 219-0436, see Table 1-5) installed. 1. From the power-up screen press % key to enter the General Setup menu, then highlight Revisions/TEST. press ! to enter the Test Subsystem menu. 2.
3.6.2 COMMON COMMANDS/QUERIES Common commands and queries are defined by the IEEE 488.2 standard to perform overall power supply functions (such as identification, status, or synchronization) unrelated to specific power supply operation (such as setting voltage/current). Common commands and queries are preceded by an asterisk (*) and are defined and explained in Appendix A (see Table 4-4). Refer also to syntax considerations (PARs 3.4.3 through 3.4.6). 3.6.
ROOT : (colon) ABORt subsystem STATus subsystem ABORt STATus :OPERation :CONDition? :ENABle val :ENABle? [:EVENt]? :PRESet :QUEStionable :CONDition? :ENABle val :ENABle? [:EVENt]? INITiate subsystem INITiate [:IMMediate] :CONTinuous bool :CONTinuous? CALibrate subsystem CALibrate :CEXTernal MAX, ZERO :CGAin MIN MAX :CLIMit MAX, ZERO :CPRotect MIN, MAX :CURRent MIN, MAX :DATA val :SAVE :STATe , password :STATe? :VEXTernal MAX, ZERO :VOLTage MIN, MAX :VGAin MIN, MAX :VLIMit MAX, ZERO :V
ROOT : (colon) [SOURce:] subsystem [SOURce:] VOLTage [:LEVel] [:IMMediate] [:AMPLitude] val [:AMPLitude]? MIN, MAX :TRIGgered [:AMPLitude] val [:AMPLitude]? :LIMit[:BOTH] [:BOTH]? :NEGative :NEGative? :POSitive :POSitive? :MODE FIXed, LIST, TRANsient, EXTernal, GAIN, PROTect :MODE? :PROTect [:BOTH] [:BOTH]? :MODE INT, EXT, LESS :MODE? :NEGative :NEGative? :POSitive :POSitive? :LIM[:BOTH] :LIM[:BOTH]? :LIM:NEGative :LIM:NEGative? :LIM:POSitive :LIM:POSitive? Requires MEM:UPD to save for power-up.
3.6.3.5 MEASURE SUBSYSTEM This query subsystem returns the voltage and current measured at the power supply's output terminals. 3.6.3.6 OUTPUT SUBSYSTEM This subsystem controls the power supply's voltage and current outputs 3.6.3.
3.6.3.9 TRIGGER SUBSYSTEM This subsystem controls the remote triggering of the power supply. 3.6.3.10 [SOURCE:]VOLTAGE AND [SOURCE:]CURRENT SUBSYSTEMS These subsystems program the output voltage and current of the power supply. 3.6.3.11 CALIBRATE SUBSYSTEM The BOP series of power supplies support software calibration. A full calibration consist of a voltage calibration and a current calibration. These calibration procedures include steps that prepare the unit for series or parallel operation.
3.6.4 PROGRAM MESSAGE STRUCTURE SCPI program messages (commands from controller to power supply) consist of one or more message units ending in a message terminator. The message terminator is not part of the syntax; it is defined by the way your programming language indicates the end of a line (“newline” character). Sending a character with EOL line asserted is another way of sending a message terminator.
TABLE 3-21. RULES GOVERNING SHORTFORM KEYWORDS IF NUMBER OF LETTERS IN LONGFORM KEYWORD IS: AND FOURTH LETTER IS A VOWEL? THEN SHORT FORM CONSISTS OF: EXAMPLES 4 OR FEWER (DOES NOT MATTER) ALL LONG FORM LETTERS MODE NO THE FIRST FOUR LONG FORM LETTERS MEASure, OUTPut, EVENt YES THE FIRST THREE LONG FORM LETTERS LEVel, IMMediate, ERRor 5 OR MORE You must use the rules above when using keywords.
3.6.4.6 MESSAGE UNIT SEPARATOR When two or more message units are combined in a program message, they must be separated by a semicolon (;) (e.g., VOLT 15;MEAS:VOLT? and CURR 12; CURR:TRIG 12.5). 3.6.4.7 ROOT SPECIFIER The root specifier is a colon (:) that precedes the first keyword of a program message. This places the parser at the root (top left, Figure 3-18) of the command tree.
STAT:PRES The parser returns to the root due to the message terminator. STAT:OPER?;PRES The parser moves one level in from STAT. The next command is expected at the level defined by the colon in front of OPER?. Thus you can combine the following message units STAT:OPER? and STAT:PRES; STAT:OPER:COND?;ENAB 16 After the OPER:COND? message unit, the parser moves in one level from OPER, allowing the abbreviated notation for STAT:OPER:ENAB. 3.6.
3.6.7.1 STATUS REPORTING STRUCTURE The status reporting of the BOP uses four status registers, illustrated in Figure 3-20. These registers are the Questionable, Operation, Standard Event and Service Request registers. The Questionable and Operation registers are 16 bit registers and the Standard Event and Service Request registers are 8 bits. These four registers are referred to as condition registers.
A zero to one transition of a condition register is added to the event register. Reading an event register clears all of the bits found in the event register. If any bits are set in an event register, the following condition register bit is then set. For example, if the STAT:QUES:ENB (enable) register has bit 0 set and a voltage error is detected, the event registers bit 0 is set. The 1 in the event register causes bit 3 of the status byte to be asserted.
3.6.7.2 OPERATIONAL STATUS REGISTER The OPERational condition register contains conditions which are a part of the instrument’s normal operation. The definition of each of these bits (condition register) is as follows: 3-66 • 0 through 4 - Not Used — always zero. • 5 - Waiting for Trigger — 1 indicates the trigger system is enabled. If trigger source is external and the trigger input goes low, the WTG will remain in a one condition until after the trigger input goes high.
3.6.7.3 QUESTIONABLE STATUS REGISTER The QUEStionable condition register (see Figure 3-20) contains status bits representing data/signals which give an indication of the quality of various aspects of the signal. A bit set in the QUEStionable condition register indicates that the data currently being acquired or generated is of questionable quality due to some condition affecting the parameter associated with that bit. • 0 - Voltage Mode Error — 1 indicates the instrument is in Current mode.
SECTION 4 - CALIBRATION 4.1 GENERAL This section contains the calibration instructions for the Power Supply. It is recommended that the user be familiar with Local Mode operation (PAR.3.2) before calibrating the unit. A full calibration consist of a voltage calibration and a current calibration. Both voltage and current calibrations consist of zero, max and min, and protection limit calibration.
TABLE 4-1. CALIBRATION SUMMARY (CONTINUED) Type Step Reference Type and Value Monitored Parameter Output Conditions Notes CURRENT, INTERNAL 1. ZERO 2. POSITIVE 3. NEGATIVE Internal Output Current: 1. 0.0A 2. +Current FS 3. –Current FS Short with Meas. Shunt Automatic CM 1. DVM between probe terminals of Meas. Shunt (LO towards COM S) 2. Adjust for zero, positive and negative FS CURRENT, PROTECTION 1. POSITIVE 2. NEGATIVE Internal Output Current: 1. +Current FS 2. -Current FS Short with Meas.
The digital voltmeter (DVM) used to measure output voltage and the voltage across the current sensing resistor should have at least six digits, multiple ranges, the smallest resolution must be at least one microvolt and the accuracy must be at least 0.0001%. To calibrate the external programming capabilities of the BOP a DC reference voltage with the following minimum specifications is required. • Value: 0.0V ±0.1mV and 10.0V ±0.
TABLE 4-4. CURRENT CALIBRATION MEASUREMENTS AND TOLERANCES SENSE RESISTOR VALUE (SEE NOTE AND TABLE 4-2) CURRENT ZERO (TOLERANCE) BOP 6-125MG 0.001 Ohm 0V (±0.0013mV) BOP 10-75MG 0.001 Ohm BOP 20-50MG MODEL ±FULL SCALE CURRENT TOLERANCE MAX. MIN. TOLERANCE 0.125V –0.125V ±0.013mV 0.125V –0.125V ±0.063mV 0V (±0.008mV) 0.075V –0.075V ±0.008mV 0.075V –0.075V ±0.038mV 0.001 Ohm 0V (±0.005mV) 0.05V –0.05V ±0.005mV 0.05V –0.05V ±0.025mV BOP 25-40MG 0.001 Ohm 0V (±0.004mV) 0.
b. MAX and MIN Calibrations. The primary means of adjustment is the CAL:DATA command to either increase (CAL:DATA 1) or decrease (CAL:DATA -1) the output value. Adjustment can be done in larger increments by increasing the numeric value, e.g., CAL:DATA +10 or CAL:DATA -10. Adjust the output to obtain the closest value above the full scale value. c. VPR and CPR Calibrations.
2. Set the BOP to zero volts output by sending CAL:VOLT ZERO. Connect a Digital Voltmeter (DVM) to the BOP OUT S and COM S terminals to measure the output voltage. Send CAL:DATA commands as needed (see PAR. 4.3a) to adjust the BOP output until the DVM reads as close to zero as possible within tolerance specified in Table 4-3 for VOLTAGE ZERO. 3. Set the BOP to maximum positive output voltage by sending CAL:VOLT MAX. Measure the voltage output using the DVM.
11. Set the BOP to zero volts output by sending CAL:ZERO. Disconnect the +10V d-c reference voltage from the analog I/O port external reference pin (A2A5J6 pin 11) of the BOP, then connect 0V ±0.1mV d-c reference voltage from the external voltage source to +V_LIM_EXT (pin 14), –V_LIM_EXT (pin 6), +I_LIM–EXT (pin 13) and –I_LIM–EXT (pin 5) referenced to pin 12 (GND1) of the BOP analog I/O connector (A2A5J6), then send the CAL:VLIM ZERO command.
CAUTION WIRES BETWEEN BOP OUTPUT AND SENSE RESISTOR MUST BE RATED TO CARRY THE RATED OUTPUT CURRENT OF THE POWER SUPPLY. AWG#6 IS RECOMMENDED. FIGURE 4-2. CALIBRATION SETUP FOR CURRENT MODE WARNING The sense resistor will be dissipating full rated current of the BOP. If it is hot to the touch, the sense resistor value, power rating and/or cooling are incorrect; refer to PAR. 4.3 and Table 4-2. 20.Set the BOP to zero volts across the sense resistor (corresponding to zero current) by sending CAL:CURR ZERO.
output until the DVM reads as close as possible above the nominal full scale value within tolerance specified in Table 4-4 for +FULL SCALE CPR LIMIT. 24.Send CAL:CPR MIN to adjust the minimum (maximum negative) current protection limit of the power supply. To adjust, send CAL:DATA commands as needed (see PAR. 4.3c) to adjust the BOP output until the DVM reads as close as possible above (absolute value) the nominal full scale value within tolerance specified in Table 4-4 for –FULL SCALE CPR LIMIT. 25.
NOTE: Accuracy of the 10V d-c reference must be ±0.1mV in order for the calibrated unit to meet published specifications. 32.Connect a +10V ±0.1mV d-c reference to pin 3 (S_IN_PARALLEL) referenced to pin 1 (SGND) of the PAR/SER CONTROL IN connector (A2A5J3). Set the BOP to maximum positive output current by sending CAL:PAR MAX. Measure the output current using the DVM. Send CAL:DATA commands as needed (see PAR. 4.3b) until the DVM reading is as specified in Table 4-3 for +FULL SCALE CURRENT. 33.
• % or ENTER - EXIT VOLTAGE*Ref Only* CURRENT 0.0000 0.0000 CALIBRATION MODE VOLTAGE SOURCE DATE FIELD FIGURE 4-3. MAIN CALIBRATION SCREEN 3. Press either ! or @ to initiate Voltage or Current calibration, respectively. To calibrate multiple units refer to the Instruction Manual Included with the associated parallel or series connection cable kit. The LCD shows the explanations for the following function keys: • ! - INTERNAL - Selects the voltage calibration of the BOP.
5. Selecting one of the above options begins calibrating the output. The screen describes the function of the active keys: • ! - or clockwise rotation of the ADJUST control adjust the output by approximately 10 increments in the positive direction. • @ - or clockwise rotation of the ADJUST control while pressed adjusts the output by one increment in the positive direction. • # - or counterclockwise rotation of the ADJUST control adjusts the output by 10 increments in the negative direction.
as close as possible above the nominal full scale value within the limits specified in Table 4-3 for +FULL SCALE VPR LIMIT. Press % once. 6. Press # - NEGATIVE to adjust the maximum negative protection limit of the power supply. Adjust as needed until the reading is as close as possible above the nominal full scale value within the limits specified in Table 4-3 for –FULL SCALE VPR LIMIT. Press % three times. 7. Press # - EXTRL CONTROLS, $ - EXTERN PROTECT. Connect 0V ±0.
16.Refer to Figure 4-2 to connect the C terminals of the Kelvin type sense resistor to the BOP and connect the DVM to the P (probe) terminals of the sense resistor ((LO terminal of DVM to common P terminal). Table 4-4 provides recommended sense resistor values for various BOP current outputs, as well as the formula for calculating expected measured values and tolerances for any sense resistor other than those recommended.
26.Press # - EXTERNAL, @ - POSITiVE. Measure the current by reading the voltage across the sense resistor. Adjust as needed until the DVM reads as close as possible above the nominal full scale value within tolerance specified in Table 4-4 for +FULL SCALE CURRENT. Press % three times. 27.Connect the DVM to pin 6 (IOUT_M_UNIT) referenced to pin 1 (SGND) of the PAR/SER CONTROL IN connector (A2A5J3). Press # - EXTRL CONTROLS, ! - Iout, and ! ZERO to set the BOP output current to zero.
ibration. Each time a CAL:SAV is executed, the values are saved in the Working (active) area. At the same time, the values previously stored in Working are moved to Prior, and the values previously stored in Prior are moved to Oldest. The values previously stored in Oldest are no longer available. Table 4-5 illustrates calibration storage and the use of the CAL:DUMP? query and CAL:COPY command. TABLE 4-5. CALIBRATION STORAGE COMMAND WORKing PRIor OLDest FACTory MASTer FIRst Factory cal. Master cal.
APPENDIX A - SCPI COMMON COMMAND/QUERY DEFINITIONS A.1 INTRODUCTION This appendix defines the SCPI common commands and queries used with the BOP power supply. Common commands and queries are preceded by an asterisk (*) and are defined and explained in paragraphs A.2 through A.18, arranged in alphabetical order. Table A-1 provides a quick reference of all SCPI common commands and queries used in the Interface Card. TABLE A-1. IEEE 488.2 COMMAND/QUERY INDEX A.2 COMMAND PAR. COMMAND PAR. *CLS A.
A.4 *ESE? — STANDARD EVENT STATUS ENABLE QUERY Syntax: *ESE? *ESE? Return value: Integer> value per Table A-2. Description: Returns the mask stored in the Standard Event Status Enable Register. Contents of Standard Event Status Enable register (*ESE) determine which bits of Standard Event Status register (*ESR) are enabled, allowing them to be summarized in the Status Byte register (*STB).
A.8 *OPC? — OPERATION COMPLETE QUERY Syntax: *OPC? *OPC? Return value: <1 or 0> (ASCII) 0 placed in output queue if power supply has not completed operation after prior *OPC command. 1 placed in output queue when power supply has completed operation. Description: Indicates when pending operations have been completed. *OPC command must be sent to first to clear status bit 0 (Operation Complete).
A.9 *OPT? *OPT? — OPTIONS QUERY Syntax: *OPT? Returns string determined by power supply model. Description: Causes the power supply to return an ASCII string which defines the functionality of the power supply. The functionality is defined as follows: STRING DATA CCAL RL1 MEANING Support for limit calibrations is present. Commands sent over GPIB cause unit to enter remote mode. MEMM Computer location commands are supported. LSTAPL LIST Apply command is supported. A.
*SRE A.13 *SRE — SERVICE REQUEST ENABLE COMMAND Syntax: *SRE grammed. where = value from 0 - 255 per Table A-3, except bit 6 cannot be pro- Description: Sets the condition of the Service Request Enable register. The Service Request Enable register determines which events of the Status Byte Register are summed into the MSS (Master Status Summary) and RQS (Request for Service) bits. RQS is the service request bit that is cleared by a serial poll, while MSS is not cleared when read.
*TST? A.17 *TST? — SELF TEST QUERY Syntax: Description: *TST? Returned value: 7 bits coded per Table A-4. Power Supply test.This query causes the power supply to do a self test and provide the controller with pass/fail results. A 0 is returned if the unit passes the test. If the unit fails, a number from 1 through 128 is returned to indicate the cause of the error. The test executes each of the subtests even when any one fails. If any test fails an error code bit is set which is returned to the user.
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS B.1 INTRODUCTION This appendix defines the SCPI subsystem commands and queries used with the BOP power supply. Subsystem commands are defined in PAR. B.3 through B.150, arranged in groups as they appear in the tree diagram, Figure 3-18. Table B-1 provides a quick reference of all SCPI subsystem commands and queries used in the BOP. TABLE B-1. SCPI SUBSYSTEM COMMAND/QUERY INDEX COMMAND PAR. COMMAND PAR. ABOR B.3 [SOUR:]LIST:CURR, ? B.54, B.55 CAL B.
TABLE B-1. SCPI SUBSYSTEM COMMAND/QUERY INDEX (CONTINUED) COMMAND PAR. COMMAND PAR. [SOUR:]VOLT:PROT:MODE, ? B.100, B.101 SYST:COMM:SER:BAUD, ? B.126, B.127 [SOUR:]VOLT:PROT:NEG, ? B.102, B.103 SYST:COMM:SER:ECHO, ? B.128, B.129 [SOUR:]VOLT:PROT:POS, ? B.104, B.105 SYST:COMM:SER:PACE, ? B.130, B.131 [SOUR:]VOLT:PROT:LIM[:BOTH], ? B.106, B.107 SYST:COMM:SER:PROM, ? B.132, B.133 [SOUR:]VOLT:PROT:LIM:NEG, ? B.108, B.109 SYST:ERR? B.134 [SOUR:]VOLT:PROT:LIM:POS, ? B.110, B.
CAL:CEXT command CAL:CGA command CAL:CLIM command CAL:CPR command CAL:CURR[:DATA] command CAL:DATA value command CAL:DPOT command CAL:SAVE command B.5 CAL:STAT command and query CAL:VEXT command CAL:VGA command CAL:VLIM command CAL:VOLT[:DATA] command CAL:VPR command CAL:ZERO command INITiate[:IMMediate] COMMAND Syntax: Short Form: INIT:[IMM] INIT[:IMM] Long Form: INITiate[:IMMediate] Description: Enables a single trigger. This command enables a single trigger.
B.6 INITiate:CONTinuous COMMAND Syntax: INIT:CONT Short Form: INIT:CONT {ON | OFF} or {1 | 0} (1 = on, 0 = off) Long Form: INITiate:CONTinuous {ON | OFF} or {1 | 0} (1 = on, 0 = off) Description: INIT:CONT ON enables continuous triggers.; INIT:CONT OFF disables continuous triggers. If INIT:CONT is OFF, then INIT[:IMM] arms the trigger system for a single trigger. If INIT:CONT is ON, then the trigger system is continuously armed and INIT[:IMM] is redundant.
B.12 MEMory:UPDate COMMAND Syntax: MEM:UPD Short Form: MEM:UPD {INT | LIM | SER | CONT | OUTP} Long Form: MEMory:UPDate {INTerface | SERial | LIMits | CONTrast | OUTPut} Description: Saves selected variables. MEM:UPD INT saves GPIB address, Language (SCPI or CIIL) and all SYST:SET (PAR. B.146) variables. MEM:UPD SER saves the serial communication state, baud rate, pace control and echo information.
NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. This example creates a 3 Ampere, 100mS current pulse and performs a current measurement during the first five mS of the pulse. LIST:CLE LIST:SET:SAMPLE .0003125 Clear list. Establishes the sample timing. The value was determined by dividing the sample time (0.005S) by the number of samples (16): (0.005/16 = 0.0003125). LIST:CURR 0;:LIST:DWELL .
OUTP? B.14 OUTPut[:STATe] QUERY Syntax: Short Form: OUTP[:STAT]? Return Value: (0 or 1) Long Form: OUTPut[:STATe]? Description: Indicates whether power supply output is enabled or disabled. Returns 0 if output disabled, returns 1 if output enabled. Related Commands: OUTP. OUTP:CONT B.
CURR? B.20 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude] QUERY Syntax: Short Form: [SOUR:]CURR[:LEV][:IMM][:AMP]? MIN, MAX Long Form: [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude]? MIN, MAX Return Value: = digits with decimal point and Exponent, e.g., 2.71E1 for 27.1 Description: Returns either the programmed value, maximum value, or minimum value of current. The CURR? query returns the programmed value of current. Actual output current will depend on load conditions.
NOTES: 1. This example assumes a BOP 36-28MG power supply is operating in constant current (CC) mode. 2 Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for programming techniques to optimize performance. CURR:LIM? Returns 28,28 (positive and negative defaults for max current in current mode). CURR:LIMIT:POS 10;NEG 2 Establishes the maximum positive and negative current values that can be set in current mode. FUNC:MODE VOLT Sets power supply in voltage mode.
CURR:MODE B.27 [SOURce:]CURRent:MODE COMMAND Syntax: Short Form: [SOUR:]CURR:MODE (FIX | LIST | TRAN | EXT | GAIN | PROT) Long Form: [SOURce:]CURRent:MODE (FIXed | LIST | TRANsient | EXTernal | GAIN | PROTect) nn = = time in Seconds for transient (from 0.0005 to 2.0) Description: Allows the user to execute or stop a list, to execute a transient or to use an external reference.
B.31 [SOURce:]CURRent[:LEVel]:PROTect:MODE COMMAND Syntax: CURR:PROT:MODE Short Form: [SOUR:]CURR[:LEV]:PROT:MODE (EXT | FIX | LESS |) Long Form: [SOURce:]CURRent[:LEVel]:PROTect:MODE (EXTernal | FIXed | LESSer |) Description: Determines how current protection limits are controlled. FIXED - Allows the limits to be controlled by digital signals from either the keypad (if the unit is in local mode) or SCPI command (if the unit is in remote mode).
B.38 [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH]? QUERY CURR:PROT:LIM:[:BOTH]? Syntax: Short Form: [SOUR:]CURR[:LEV]:PROT:LIM[:BOTH]? Long Form: [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH]? Returns , Description: Identifies the maximum value possible for protection limits for current (positive, negative); maximum is 1% greater than rated output current. B.
CURR:TRIG? B.44 [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude]? QUERY Syntax: Short Form: [SOUR:]CURR[:LEV]:TRIG[:AMP]? Long Form: [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude]? Return Value: = digits with decimal point and Exponent, e.g., 2.71E1 for 27.1 Description: Returns the current value established by CURR:TRIG command. B.
NOTES: Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for programming techniques to optimize performance. LIST:CLEAR LIST:RES? Initializes the list process. Returns 0.000093,0.034000,nnnn (where nnnn = total number of points available). LIST:VOLT:POINTS? Returns 0. LIST:VOLT:POINTS? MAX Returns 5900. LIST:VOLT:APPLY SINE,15,10 Causes the BOP to generate points.for 15Hz sine wave, 10V p-p.
.VOLT:MODE LIST Executes the list. For 240 mS the BOP outputs a staircase triangle wave from -20V to +20V and back down to -20V. This staircase will have a uniform spacing between voltage changes of 10 mS and will repeat 100 times. VOLT? Returns +20 (the last step in the list set the unit to +20V. LIST:COUNT? Returns 100. LIST:COUNT 10 Determines that the list will be repeated 10 times when executed. LIST:COUNT? Returns 10. VOLT:MODE LIST Initiates execution of the list.
LIST:CURR B.54 [SOURce:]LIST:CURRent COMMAND Syntax: Short Form: LIST:CURR , , . . . (to max of 5900 data points for global dwell time) Long Form: LIST:CURRent , , . . . (to max of 5900 data points for global dwell time) = digits with decimal point and Exponent, e.g., 2.71E1 for 27.1 Description: Adds the current value (in Amps) to list.
B.58 [SOURce:]LIST:CURRent:APPLy:SWEep? QUERY Syntax: LIST:CURR:APPL:SWE? Short Form: LIST:CURR:APPL:SWE? Long Form: LIST:CURRent:APPLy:SWEep? Return Value: , (0.01 to 360) Description: Returns start and stop angle in degrees for either triangle and sine waveforms. B.
LIST:DWEL:POIN? B.64 [SOURce:]LIST:DWELl:POINts? QUERY Syntax: Short Form: LIST:DWEL:POIN? Return Value: (0 to 5900) Long Form: LIST:DWELl:POINts? Description:Identifies the number of locations for which time values have been entered and the next location to be filled by a LIST:DWEL command. If LIST:DWEL:POIN? returns 6, dwell times have been entered for locations 0 through 5 and location 6 is the next to be filled by a LIST:DWEL command. LIST:DWEL, LIST:DWEL:POIN. (See example, Figure B-5.) B.
B.69 [SOURce:]LIST:SAMPle:CURRent COMMAND Syntax: LIST:SAMP:CURR Short Form: LIST:SAMP:CURR average,value Long Form: LIST:SAMPle:CURRent average,value where: = number of measurements = integer: 2, 4, 8, 16, 32, 64, 128 or 256 = programmed current (Amps) for current list, or programmed voltage (Volts) for voltage list. Description: Samples output current. is either programmed current in Amperes, or programmed voltage in Volts.
LIST:SET:SAMP B.72 [SOURce:]LIST:SET:SAMPle COMMAND Syntax: Short Form: LIST:SET:SAMP value Long Form: LIST:SET:SAMPle value where value = sample pulse duration, between 0.00025 and 0.034 (Seconds) Description: Establishes sample pulse duration. This command must be used when measuring a sample, but must only be issued once, otherwise a -100 “command error: will result. (See Figures B-6 and B-7.) LIST:SET:SAMP? B.
NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. The WAIT commands provide a method to synchronize multiple instruments to a common control pulse. This example assumes BOP and a number of switching DVMs are connected to a Unit Under Test (UUT). The DVMs are programmed to wait 1 mS after a high pulse is received from the host computer, then take a few measurements.
NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. This example assumes a BOP and a DVM is connected to a Unit Under Test (UUT). The DVM is connected to EXT_E/ EXT_C (pins 5/6 of the BOP External Protection port). When the BOP outputs a low EXT_E/ EXT_C, The DVM takes a series of measurements and places its wait line low. The DVM Wait line is connected to the Trigger Input (pin 3 of the of the BOP trigger port).
LIST:TRIG B.78 [SOURce:]LIST:TRIGger COMMAND Syntax: Short Form: LIST:TRIG Long Form: LIST:TRIGger where: = programmed current (Amps) for current list, or programmed voltage (Volts) for voltage list. Description: Similar to LIST:VOLT or LIST:CURR, except also allows Output Off flag of External Protection Port to be used to trigger an external device.
B.82 [SOURce:]LIST:VOLTage:APPLy:SWEep COMMAND Syntax: LIST:VOLT:APPL:SWE Short Form: LIST:VOLT:APPL:SWE <>, Long Form: LIST:VOLTage:APPLy:SWEep , Where is start angle. Valid from 0 to 359.99 degrees. is stop angle. Valid from 0.01 to 360.00 degrees Description: Allows the user to provide a starting angle for either triangle and sine waveforms and an optional stop angle. If the stop angle is not supplied, the unit defaults to 360 degrees.
step when either a) the trigger input goes low or b) the wait time expires (non-zero wait values only), whichever comes first. If the wait time is 0, the unit must wait until the trigger input goes from high to low before proceeding to the next step. This command must be preceded by LIST:CURR or LIST:VOLT command, otherwise a -221 “Settings Conflict” error results. The entries of the dwell list must match the values in the current or voltage list, otherwise a -226 “Lists Not Same Length” error results.
LIST:WAIT:LOW B.87 [SOURce:]LIST:WAIT:LOW COMMAND Syntax: Short Form: LIST:WAIT:LOW value Long Form: LIST:WAIT:LOW value where: = programmed current (Amps) for current list, or programmed voltage (Volts) for voltage list. Description: Waits for the trigger input to go low before advancing to next step. When the command is executed the output is immediately set to the . Pins 1 (GND) and 3 of the Trigger Port are used as the input trigger.
B.92 [SOURce:]VOLTage[:LEVel]:LIMit:NEGative COMMAND Syntax: VOLT:LIM:NEG Short Form: [SOUR:]VOLT[:LEV]:LIM:NEG Long Form: [SOURce:]VOLTage[:LEVel]:LIMit:NEGative where is between zero and rated (nominal) output voltage Description: Establishes the software limit for negative output voltage, i.e., sets the maximum value of negative output voltage that the unit will be allowed to produce. Requires MEM:UPD (PAR. B.12) to save for power up. See PAR. 3.5.2.
VOLT:MODE? B.97 [SOURce:]VOLTage:MODE? QUERY Syntax: Short Form: [SOUR:]VOLT[:LEV]:MODE? Long Form: [SOURce:]VOLTage[:LEVel]:MODE? Return value: FIX, LIST, TRANS, EXT, or GAIN Description: Identifies active voltage mode. See PAR. B.96 for further details Related Commands: LIST commands. (See example, Figure B-5.) B.
VOLT:PROT:NEG B.102 [SOURce:]VOLTage[:LEVel]:PROTect:NEGative COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:NEG Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:NEGative where is between minimum (box) value (Figure 1-3) and 1% above rated (nominal) output voltage. Description: Establishes the negative protection limit for voltage; maximum is 1% greater than rated output voltage. VOLT:PROT:NEG? B.
B.109 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:NEGative? QUERY VOLT:PROT:LIM:NEG? Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:LIM:NEG? Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:NEGative? Returns: Description:Identifies the minimum (maximum absolute) value possible for the negative protection limit for voltage. B.
STAT:OPER:ENAB B.115 STATus:OPERation:ENABle COMMAND Syntax: Short Form: Long Form: STAT:OPER:ENAB STATus:OPERation:ENABle Description: Sets Operation Enable Register. The Operation Enable Register is a mask for enabling specific bits in the Operation Event Register which will cause the operation summary bit (bit 7) of the Status Byte register to be set Bit set to 1 = function enabled (active, true); bit reset to 0 = function disabled (inactive, false).
B.121 STATus:QUEStionable:ENABle COMMAND Syntax: Short Form: STAT:QUES:ENAB STAT:QUES:ENAB Long Form: STATus:QUESionable:ENABle Description: Programs Questionable Condition Enable Register (see Table B-4).
STAT:QUES:ENAB? B.122 STATus:questionable:ENABle? QUERY Syntax: Short Form: STAT:QUES:ENAB? Long Form: STATus:QUESionable:ENABle? Return Value: actual register value Description: Reads Questionable Condition Enable Register (see Table B-4). Power supply returns value of Questionable Condition Enable Register, indicating which conditions are being monitored. Bit set to 1 = function enabled (active, true); bit reset to 0 = function disabled (inactive, false). Related Commands: STAT:QUES?.
SYST:COMM:SER:PACE B.130 SYSTem:COMMunication:SERial:PACE COMMAND Syntax: Short Form: SYST:COMM:SER:PACE {NONE | XON} Long Form: SYSTem:COMMunication:SERial:PACE {NONE | XON} Description: Enables (XON) or disables (NONE) data flow control via the serial interface (see PAR. 3.5.6.2.1). See PAR. 3.5.2.2 and Figure 3-16 for special programming considerations. B.
SYST:KEYB? B.138 SYSTem:KEYBoard? QUERY Syntax: Short Form: SYST:KEYB? Long Form: SYSTem:KEYBoard? Returns: 1 or 0 Description:Identifies the state of the keypad: locked (1) or unlocked (0). SYST:PASS:CEN B.139 SYSTem:PASSword:CENable COMMAND Syntax: Short Form: SYST:PASS:CEN Long Form: SYSTem:PASSword:CENable Description: Sets the password enable state if the value matches the current Main password. This command allows CALibrate commands to operate. SYST:PASS:CDIS B.
SYST:SEC:IMM B.145 SYSTem:SECurity:IMMediate COMMAND Syntax: Short Form: SYST:SEC:IMM Long Form: SYSTem:SECurity:IMMediate Description: Initializes all NVRAM variable to factory defaults. Empties all memory locations. See PAR. 3.5.2.2 and Figure 3-16 for special programming considerations. This command is password protected (must be preceded by SYST:PASS:CEN (see PAR B.139). SYST:SET B.
INIT:IMM or INIT:CONT enable (ON) commands prior to sending the selected trigger command. (see PAR. A.16). Receipt of the active trigger causes the power supply to program to the previously stored values of VOLT:TRIG and CURR:TRIG (actual output voltage/current is dependent upon the load). Sending TRIG:SOUR IMM causes the next VOLT:TRIG or CURR:TRIG to immediately program the output, regardless of trigger arming. *RST sets TRIG:SOUR to IMMediate. Related Commands: , *TRG, INIT:IMM, INIT:CONT.
TABLE B-5. ERROR MESSAGES (CONTINUED) ERROR MESSAGE ESR ERROR BIT SET (SEE PAR. A.5) EXPLANATION -240,“Hardware error” Execution error bit 4 Power supply did not respond to command. -249,”Master Not Found” Execution error bit 4 The slave controller for a multiple unit configuration has not detected a master unit. - this is an operator error as the slave should not be operated over the GPIB interface.
KEPCO® THE POWER SUPPLIER™ BOP 1000W QUICK REFERENCE GUIDE Once the power supply is installed (see full Technical Manual), this guide is an aid that briefly outlines a simple approach to accomplishing common tasks, with the appropriate Technical Manual paragraph references for more details. All instructions start from the power-up screen (press % from most submenus to return to power-up screen). Many setup functions can be password protected - see UTILITY below for instructions.
CONTROLLING THE OUTPUT USING EXTERNAL (ANALOG) SIGNALS (REMOTE) How do I control the mode using an external signal? $, highlight External Mode, !, highlight Enable, $, then % to apply changes and exit. This setting is not saved for power-up (PAR. 3.4.2). Select mode by applying either logic 1 or open circuit for voltage, or logic 0 or short circuit for current, to pin 2 referenced to pin 9 of the Analog I/O port (PAR. 3.4.2).
