User’s Guide AC Power Solutions Agilent Models 6811B, 6812B, and 6813B For instruments with Serial Numbers: Agilent 6811B: US38390101-up Agilent 6812B: US38390101-up Agilent 6813B: US38390101-up Agilent Part No. 5962-0829 Microfiche No 5962-0830 Printed in U.S.A.
Warranty Information CERTIFICATION Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau’s calibration facility, and to the calibration facilities of other International Standards Organization members.
Safety Summary The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer’s failure to comply with these requirements. WARNING: LETHAL VOLTAGES Ac sources can supply 425 V peak at their output.
SAFETY SYMBOLS Direct current Alternating current Both direct and alternating current Three-phase alternating current Earth (ground) terminal Protective earth (ground) terminal Frame or chassis terminal Terminal is at earth potential. Used for measurement and control circuits designed to be operated with one terminal at earth potential.
Declaration Page DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN 45014 Manufacturer’s Name: Manufacturer’s Address: Agilent Technologies, Inc. 140 Green Pond Road Rockaway, New Jersey 07866 U.S.A.
Acoustic Noise Information Herstellerbescheinigung Diese Information steht im Zusammenhang mit den Anforderungen der Maschinenläminformationsverordnung vom 18 Januar 1991. * Schalldruckpegel Lp <70 dB(A) * Am Arbeitsplatz * Normaler Betrieb * Nach EN 27779 (Typprüfung). Manufacturer’s Declaration This statement is provided to comply with the requirements of the German Sound Emission Directive, from 18 January 1991.
Table of Contents Warranty Information Safety Summary Declaration of Conformity Acoustic Noise Information Printing History Table of Contents 2 3 5 6 6 7 1 GENERAL INFORMATION 11 Document Orientation Earlier AC Source Models Safety Considerations Options and Parts Description Capabilities Front Panel/Remote Operation Steady-state Output Characteristic Peak Current/Dynamic Power Capability Peak Current Limit Peak Inrush Example RMS Current Limit Circuit Voltage Regulation Real Time Regulation RMS Regulat
3 TURN-ON CHECKOUT Introduction Preliminary Checkout Using the Keypad Checkout Procedure In Case of Trouble Error Messages Line Fuse 4 FRONT PANEL OPERATION Introduction Front Panel Description System Keys Function Keys Immediate Action Keys Scrolling Keys Meter Display Keys Output Control Keys Protection and Status Control Keys Trigger and List Control Keys Entry Keys Examples of Front Panel Programming 1 - Setting the Output Voltage Amplitude 2 - Setting the Output Frequency 3 - Setting the DC Offset 4 -
Enable Calibration Mode Calibrating and Entering Voltage Offset Values Calibrating and Entering DC Voltage Gain Values Calibrating and Entering AC rms Voltage Gain Values Calibrating the OVP Trip Point Calibrating and Entering rms Current Values Calibrating and Entering rms Current Measurement Values Calibrating the Output Impedance Saving the Calibration Constants Changing the Calibration Password Calibration Error Messages Calibration Over the GPIB Agilent Calibration Program Listing 72 72 73 73 74 74 75
1 General Information Document Orientation This manual describes the operation of the Agilent 6811B/6812B/6813B AC Power Solutions. These units will be referred to as "ac sources" throughout this manual.
1 - General Information Earlier AC Source Models With the exception of some minor readback specification differences, information in this manual also applies to the following earlier ac source models: Information about this current model Agilent 6811B Agilent 6812B Agilent 6813B also applies to the following earlier models: Agilent 6811A AC Power Source/Analyzer Agilent 6812A AC Power Source/Analyzer Agilent 6841A Harmonic/Flicker Test System in normal mode Agilent 6813A AC Power Source/Analyzer Agilent
General Information - 1 The following table lists some common user-replaceable parts: Table 1-2.
1 - General Information The following model ac power sources are described in this User’s Guide: Model Agilent 6811B Agilent 6812B Agilent 6813B Description 0-300 V rms; 375 VA (425 V peak; 40 A peak) 0-300 V rms; 750 VA (425 V peak; 40 A peak) 0-300 V rms; 1750 VA (425 V peak; 80 A peak) Capabilities ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Programmable ac voltage, dc voltage, frequency, phase, and current limit. Sine, square, clipped sine, and user-definable waveforms. Programmable output impedance.
General Information - 1 Remotely programming is accomplished from either the GPIB bus or from an RS-232 serial port. GPIB and RS-232 programming uses SCPI commands (Standard Commands for Programmable Instruments) that make the ac source programs compatible with those of other instruments. AC source status registers permit remote monitoring of a wide variety of ac source operating conditions NOTE: Refer to the ac source Programming Guide for further information about remotely programming the ac source.
1 - General Information Peak Current/Dynamic Power Capability The ac source can generate peak currents that exceed the rms current capability of the unit. This not only applies when operating in ac mode, but also when programming output pulses in dc mode. Although the unit will generate peak output currents up to 40A ( Agilent 6811B/6812B) or 80A (Agilent 6813B), the unit can only maintain this output for a limited time.
General Information - 1 ♦ ♦ ♦ as voltage increases, the Ipeak setting needs to be decreased. as frequency increases, the Ipeak setting can be increased. as load resistance decreases, the I peak setting needs to be decreased. Note that the purpose of programming the Ipeak current is to prevent the unit from activating its internal protection mode as a result of exceeding the SOA limits, and turning the output off.
1 - General Information RMS Current Limit Circuit The output rms current limit is adjustable to any value within the range of the unit. If the load attempts to draw more current than the programmed limit, the output voltage is reduced to keep the rms current within the limit. When the output voltage is reduced, the waveform shape is preserved. In other words, all parts of the voltage cycle are reduced -- not just the peaks.
General Information - 1 CAUTION: Programming the ac source output impedance into a load with a low impedance can cause output voltage instability, which may damage the ac source. Stability MUST be maintained when operating the ac source with programmable resistance or inductance. To check for stability, monitor the output voltage with an oscilloscope.
2 Installation Inspection Damage When you receive your ac source, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and the nearest Agilent Sales and Support Office immediately. The list of Agilent Sales and Support Offices is at the back of this guide. Warranty information is printed in the front of this guide.
2 - Installation Location Refer to the Safety Summary page at the beginning of this manual for safety-related information about environmental conditions. CAUTION: Agilent 6811B/6812B units weigh 28.2 kg (62 lbs). Agilent 6813B units weigh 32.7 kg (72 lbs). Obtain adequate help when moving or mounting the unit in the rack. Bench Operation The outline diagram in figure 2-1 gives the dimensions of your ac source. The feet may be removed for rack mounting.
Installation - 2 Input Connections Input Source and Line Fuse You can operate your ac source from a single-phase ac power source as indicated on the rear panel Line Rating label. See "ac Input Voltage Range" in Table A-2 of Appendix A for details. NOTE: The power ac source must be on a dedicated line with no other devices consuming current from it. The line fuse is located inside the ac source. Refer to "In case of Trouble" in Chapter 3 for instructions on fuse replacement.
2 - Installation L1 L2(N) 1. GROUND CONNECTION (GRN/YEL OR GRN) 1 2. LINE CONNECTION (BROWN OR BLACK) 3. NEUTRAL CONNECTION (BLUE OR WHITE) 2 6 7 8 4. POWER CORD 5. CONNECTOR NUT 3 6. RUBBER BOOT 4 8. STRAIN RELIEF CONNECTOR 7. POWER SAFETY COVER 5 Figure 2-3. Connecting the Power Cord Output Connections The power output terminal block has a floating output terminal connection and a floating neutral line for the return connection.
Installation - 2 Wire Considerations NOTE: To minimize the possibility of instability on the output, keep load leads as short as possible bundle or twist the leads tightly together to minimize inductance Current Ratings Fire Hazard To satisfy safety requirements, load wires must be large enough not to overheat when carrying the maximum short-circuit current of the ac source.
2 - Installation ♦ ♦ ♦ Connect the phase 1 (1) sense terminals to the side of the load that connects to the corresponding output terminal. Connect the Neutral (COM) sense terminal connector to the neutral side of the load. Twist and shield all signal wires to and from the sense connectors. The sense leads are part of the ac source’s feedback path and must be kept at a low resistance in order to maintain optimal performance. Connect the sense leads carefully so that they do not become opencircuited.
Installation - 2 Remote Sensing and OVP Considerations In remote sense applications, the voltage drop in the load leads subtracts from the available load voltage (see "Remote Sensing Capability" in appendix A). As the ac source increases its output to overcome this voltage drop, the sum of the programmed voltage and the load-lead drop may exceed the ac source’s maximum voltage rating. This may trip the OV protection circuit, which senses the voltage at the output terminals, not at the load.
2 - Installation In example B, the FLT output of one unit is connected to the INH input of another unit. A fault condition in one of the units will disable all of them without intervention either by the controller or external circuitry. The controller can be made aware of the fault via a service request (SRQ) generated by the Questionable Status summary bit. FLT INH + - + -I + - + -I .... NOTE: Connectors are removable FLT FLT Output INH + - + -I + - + -I INH Input ....
Installation - 2 RS-232 Interface The ac source provides an RS-232 programming interface, which is activated by commands located under the front panel Address key. When the RS-232 interface is selected, the GPIB interface is disabled. NOTE: Sending or receiving data over the RS-232 interface when not configured for REMOTE operation can cause unpredictable results. Always make sure the ac source is configured for remote operation when using the RS-232 interface.
2 - Installation Hardware Handshake The RS-232 interface uses the DTR (data terminal ready) line as a holdoff signal to the bus controller. When DTR is true, the bus controller may send data to the ac source. When DTR goes false, the bus controller must stop sending data within 10 characters, and must not send any more data until DTR goes true again. The ac source sets DTR false under two conditions. 1. When the input buffer is full (approximately 100 characters have been received), it will set DTR false.
3 Turn-On Checkout Introduction Successful tests in this chapter provide a high degree of confidence that the ac source is operating properly. For verification tests, see appendix B. Complete performance tests are given in the Service Guide. NOTE: This chapter provides a preliminary introduction to the ac source front panel. See Chapter 4 for more details. Preliminary Checkout WARNING: LETHAL VOLTAGES. Ac sources can supply 425 V peak at their output.
3 - Turn-On Checkout Using the Keypad (shift) p Ë and and q Ì É Enter Some of the front panel keys perform two functions, one labeled in black and the other in blue. You access the blue function by first pressing the blue shift key. Release the key after you press it. The Shift annunciator will be on, indicating that you have access to any key’s shifted function. These keys let you scroll up and down through the choices in the presently selected function menu.
Turn-On Checkout - 3 ! SENSE 01 01 COM COM 100 W Figure 3-1.Verification Connections Procedure Display Explanation 1. Turn the unit on. Meter mode Meter mode is active and the Dis annunciator should be on. 2. Press the Voltage key. VOLT 0.00 Display indicates the default settings. 3. Press 1, 2, 0, Enter 4. Press Output On/Off 120 V 5. Press Protect PROT:CLEAR 6.
3 - Turn-On Checkout Procedure Display Explanation 10. Press Shift, and Current CURR:LEV 5 Indicates the default output current limit setting. 11. Press . 5 Enter CURR:LEV .5 Sets the current limit to .5 amperes. The CC annunciator is on, indicating that the unit is in current limit mode and the light bulbs are dimmer because the output voltage has dropped in its attempt to limit output current. 12. Press Protect, scroll to the CURR:PROT item, and press ° to select ON. Then press Enter. 13.
Turn-On Checkout - 3 Runtime Error Messages Under unusual operating conditions, the front panel display may show OVLD. This indicates that the output voltage or current is beyond the range of the meter readback circuit. If the front panel display indicates -- -- -- -- -- -- , a GPIB measurement is in progress. Appendix C lists other error messages that may appear at runtime.
4 Front panel Operation Introduction Here is what you will find in this chapter: ♦ ♦ a complete description of the front panel controls front panel programming examples that describe: how to program the output voltage and frequency how to measure the output how to program the output pulses and lists how to trigger output changes Front Panel Description 1 2 5 6 7 300 V rms 50 VA 1 6812A AC POWER SOURCE / ANALYZER SYSTEM FUNCTIO N Harmonic Local 1 115.0V 60.
4 - Front Panel Operation j Display k Annunciators l Voltage/ Frequency n Line o System Keys p Function Keys q Entry Keys 38 14-character vacuum fluorescent display for showing programmed commands and measured values. Annunciators light to indicate operating modes and status conditions: φ1 Phase 1 is being controlled or metered. CV The ac source output is in constant-voltage mode. CC The ac source output is in constant-current mode. Unr The ac source output is in an unregulated state.
Front Panel Operation - 4 System Keys Refer to the examples later in this chapter for more details on the use of these keys. SYSTEM Local Error Address Save Recall Figure 4-2. System Keys This is the blue, unlabeled key, which is also shown as Shift in this guide. Pressing this key accesses the alternate or shifted function of a key (such as ERROR ). Release the key after you press it. The Shift annunciator is lit, indicating that the shifted keys are active.
4 - Front Panel Operation Function Keys Refer to the examples later in this chapter for more details on the use of these keys. FUNCTION Harmonic Meter Output Input Index Current Voltage Phase Index Freq Status Protect Shape Trigger List Trigger Control Pulse Phase Select Output on/off Figure 4-3. Function Keys Immediate Action Keys Immediate action keys immediately execute their corresponding function when pressed.
Front Panel Operation - 4 Meter Display Keys Metering keys control the metering functions of the ac source. Press this key to access the meter menu list.
4 - Front Panel Operation Output Control Keys Output control keys control the output functions of the ac source. Voltage Press this key to access the voltage menu list.
Front Panel Operation - 4 Shift Phase Press this key to access the phase menu list. Display Command Function PHASE PHASE:T PHASE:M Press this key to access the shape menu list.
4 - Front Panel Operation Protection and Status Control Keys The Protect and Status keys control the protection functions and status registers of the ac source. Refer to Chapter 4 of the Programming guide for more information on the status registers. Protect Press this key to access the protection menu list. Display Command Function PROT:CLEAR Clear the status registers of all activated protection signals. The fault causing a signal must be corrected or removed before the register can be cleared.
Front Panel Operation - 4 Trigger and List Control Keys The Trigger Control key controls output transient triggers. The List key controls the generation of output lists. A list can contain up to 100 points, each of which can specify an output change (or transient). Refer to Chapter 4 of the Programming Guide for more information about programming triggers and lists. Trigger Control Press this key to access the trigger control menu list.
4 - Front Panel Operation Entry Keys Refer to the examples later in this chapter for more details on the use of these keys. ENTRY Calibration 7 8 9 4 5 6 1 2 3 - Clear Entry E 0 Enter . Figure 4-4. Entry Keys Ë 0 Ì − 9 . These keys let you scroll through choices in a parameter list that apply to a specific command. Parameter lists are circular; you can return to the starting position by continuously pressing either key.
Front Panel Operation - 4 Examples of Front Panel Programming You will find these examples on the following pages: 1 Setting the output voltage amplitude 2 Setting the output frequency 3 Setting the dc offset 4 Setting a protection feature 5 Clearing a protection feature 6 Generating step, pulse, and list transients 7 Programming trigger delays and phase synchronization 8 Programming slew rates 9 Measuring peak inrush current 10 Setting the GPIB address or RS-232 parameters 11 Saving and recalling operatin
4 - Front Panel Operation 2 - Setting the Output Frequency When you turn on the ac source, the default output frequency is a 60 Hz. Assuming the voltage output from example 1 is in effect (120 Vrms sinewave), change the frequency to 50 Hz as follows: Action Display You can set the frequency in the same way that you set the voltage: 1. On the Function keypad, press Freq. On the Entry keypad, press 5 0 Enter. FREQ 50 2. On the Function keypad, press Freq.
Front Panel Operation - 4 4 - Setting a Protection Feature You can set the ac source to disable its output if it detects an overvoltage or overcurrent fault condition. Other automatic fault conditions (such as overtemperature) also will disable the output. Set the overcurrent protection feature as follows: Action Display 1. On the Function keypad, press Protect. 2. Press ° to obtain the overcurrent command. CURR:PROT OFF 3.
4 - Front Panel Operation Condition OV Condition Action Usually overvoltage conditions are caused by an external source forcing voltage into the output of the ac source. Remove this external source to eliminate the overvoltage. You can also program the overvoltage level to a higher value, or turn the overvoltage protection off. In other cases the output voltage may have exceeded the user-programmed overvoltage level.
Front Panel Operation - 4 Step Transient The Voltage Menu lets you specify an alternate or triggered voltage level that the ac source will apply to the output when it receives a trigger. Because the default transient voltage level is zero volts, you must first enter a triggered voltage before you can trigger the ac source to change the output amplitude. Refer to Chapter 4 of the Programming Guide for more information about programming triggers.
4 - Front Panel Operation Action Display 1. Press Voltage to access the Voltage Menu. On the Entry keypad, press 1 0 2 Enter. VOLT 102 2. Press ô to access the triggered voltage command. On the Entry keypad, press 1 2 0 Enter. VOLT 120 3. Access the Voltage Menu again and press ô to access the voltage mode command. On the Entry keypad, press ¯ or ° to scroll through the mode parameters to obtain PULSE and press Enter. 4. Press Pulse to access the Pulse Menu. From the Entry keypad, press .
Front Panel Operation - 4 Action Display 1. Press Voltage to access the Voltage Menu. Then press ô to access the voltage mode command. VOLT:M FIXED 2. On the Entry keypad, press ¯ or ° to scroll through the mode parameters to obtain LIST and press Enter. VOLT:M 3. Access the List Menu by pressing Shift List. The first menu command is the count. From the Entry keypad, change the list count from the default (1) to 2. Press Enter. COUNT 2 4.
4 - Front Panel Operation Note that phase synchronization is referenced to an internal phase signal. The output of the unit is normally offset by 0° with respect to this internal reference. Because synchronized transient events always occur with respect to the internal reference, the output will normally be in phase with the value programmed for phase synchronization. (The Phase command can be used to change the offset of the output with respect to the internal phase reference.
Front Panel Operation - 4 8 - Using Slew Rates to Generate Waveforms As shown in the previous examples there are a number of ways that you can generate custom waveforms. Programmable slew rates provide additional flexibility when customizing waveforms. The following figure illustrates how programmable slew rates are applied in the transient operating modes. In example , an immediate slew rate of 50 volts/second is used whenever a new output voltage is programmed.
4 - Front Panel Operation Example j Display This example uses the immediate slew rate. First, access the Voltage menu and press ô until you access the mode command. On the Entry keypad, press ° to obtain FIXED. Press Enter. Access the voltage menu and press ô until you access the slew command. On the Entry keypad, press 5 0 Enter to program a slew rate of 50 volts/second. VOLT:M SLEW FIXED 50 Whenever a new immediate voltage value is entered, the output will slew to the new level at 50 volts/second.
Front Panel Operation - 4 9 - Measuring Peak Inrush Current Peak inrush current is a non-repetitive measurement in the sense that peak inrush current occurs only when the unit under test is first turned on. In order to repeat the measurement, you must turn the unit off and wait for any input filter capacitors to discharge completely. This example shows you how you can measure the peak inrush current using the front panel meter.
4 - Front Panel Operation 10 - Setting the GPIB Address and RS-232 Parameters Your ac source is shipped with the GPIB address set to 5 This address can only be changed from the front panel using the Address menu located under the Address key. This menu is also used to select the RS232 interface and specify RS-232 parameters such baud rate and parity. Action Display To set the GPIB address, proceed as follows: 1. On the System keypad, press Address. ADDRESS 5 2. Enter the new address.
A Specifications Specifications Table A-1 lists the specifications of the ac source. Performance specifications are warranted over the ambient temperature range of 0 to 40 oC. Unless otherwise noted, specifications are for a sinewave with a resistive load at an output frequency range of 45 Hz to 1 kHz, in ac-coupled mode after a 30-minute warmup. Refer to table A-3 for ac source operation with output frequencies from dc to 45 Hz. Table A-1.
A - Specifications Table A-1.
Specifications - A Supplemental Characteristics Table A-2 lists the supplemental characteristics, which are not warranted but are descriptions of typical performance determined either by design or type testing. Table A-2.
A - Specifications Table A-2.
Specifications - A Operation Below 45 Hz The following operating characteristics apply for output frequencies between 45Hz and 1Hz. Below 1 Hz, instantaneous values meet the dc specifications. The ac source output is set to: sinewave, dc coupled, real-time regulation, and is connected to a linear load. Table A-3.
B Verification and Calibration Introduction This appendix includes verification and calibration procedures for the Agilent 6811B/6812B/6813B AC Power Solutions. Instructions are given for performing the procedures either from the front panel or from a controller over the GPIB. The verification procedures do not check all the operating parameters, but verify that the ac source is performing properly.
B - Verification and Calibration Table B-1. Equipment Required Equipment Characteristics Recommended Model Digital Voltmeter Resolution: 10 nV @ 1 V Readout: 8.5 digits Accuracy: >20 ppm Agilent 3458A Current Monitor 1 0.01 Ω, ±200 ppm, 10 Watts Guildline 7320/0.01 Ratio Transformer2 30:1 ratio, 50 ppm, 45 Hz to 1 kHz Load Resistor 20 Ω, 10 A, 1800 Watts min. Impedance Resistor 1 Ω, 100 Watts min.
Verification and Calibration - B Performing the Verification Tests The following procedures assume you understand how to operate the ac source from the front panel as explained in Chapter 4. When performing the verification tests from a GPIB controller, you may have to consider the relatively slow settling times and slew rates of the ac source as compared to computer and system voltmeters.
B - Verification and Calibration DC Voltage Programming and Measurement Accuracy CAUTION: Disconnect the ratio transformer for this test. This test verifies the dc voltage programming, GPIB readback, and front panel meter functions. Values read back over the GPIB should be the same as those displayed on the front panel. Connect the negative terminal of the DVM to the COM output terminal to determine the ± dc offset voltages. Action 1. Make sure the ac source is turned off.
Verification and Calibration - B Table B-2. Agilent 6811B Verification Test Record Model Agilent 6811B Test Description Report No.____________ Date_____________ Minimum Specification Recorded Results Maximum Specification Voltage Programming and Measurement Accuracy 300 Vrms accuracy at 45 Hz Front Panel Measurement 299.250 V Vrms −190 mV _______V _______V 300.750 V Vrms +190 mV 300 Vrms accuracy at 400 Hz Front Panel Measurement 298.200 V Vrms −190 mV _______V _______V 301.
B - Verification and Calibration Table B-3 (continued) DC Programming and Measurement Accuracy 425 Vdc accuracy Front Panel Measurement 424.075 V Vdc −0.277 V _______V _______V 425.925 V Vrms +0.277 V −425 Vdc accuracy Front Panel Measurement −424.075 V Vdc −0.277 V _______V _______V −425.925 V Vrms +0.277 V RMS Current Measurement Accuracy Low Range High Range (Iout = calculated output current @ 60Hz) Iout −0.0045 A Iout −0.0175 A _______A _______A Iout +0.0045 A Iout +0.0175 A Table B-4.
Verification and Calibration - B Performing the Calibration Procedure Table B-1 lists the equipment required for calibration. Figure B-1 shows the test setup. NOTE: You do not have to do a complete calibration each time. You may calibrate only the voltage or current and proceed to "Saving the Calibration Constants." However, before you calibrate OVP, you must first calibrate the output voltage.
B - Verification and Calibration Front Panel Calibration WARNING: LETHAL VOLTAGES. Ac sources can supply 424 V peak at their output. DEATH on contact may result if the output terminals or circuits connected to the output are touched when power is applied. These procedures must be performed by a qualified electronics technician or engineer trained on this equipment. The following procedures assume you understand how to operate front panel keys (see Chapter 4). Enable Calibration Mode Action Display 1.
Verification and Calibration - B 11. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry keypad to enter the dc voltage value displayed on the DVM. 12. Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to scroll to the P4 parameter, and press Enter. 13. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry keypad to enter the dc voltage value displayed on the DVM. CAL:DATA 0.00 CAL:LEV P4 CAL:DATA 0.
B - Verification and Calibration 26. Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to scroll to the P2 parameter, and press Enter. This selects the second calibration point. CAL:LEV P2 27. Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry keypad to enter the product of the transformer ratio times the ac voltage value displayed on the DVM. CAL:DATA 0.00 28.
Verification and Calibration - B Calibrating and Entering rms Current Measurement Values Action Display 40. Connect the DVM (ac rms mode), current shunt, and load resistor as shown in figure B-1 with S1 closed. 41. Press Shift Calibration, scroll to the CAL CURR MEAS command, and press Enter. CAL:CURR:MEAS 42. Press Shift Calibration, scroll to the CAL LEV P1 command, and press Enter. CAL:LEV P1 43. Press Shift Calibration, scroll to the CAL DATA 0.00 command.
B - Verification and Calibration Changing the Calibration Password The factory default password is 0. You can change the password when the ac source is in calibration mode (which requires you to enter the existing password). Proceed as follows: Action Display 1. Begin by pressing Shift Cal and scrolling to the CAL ON command. 2. Enter the existing password from Entry keypad and press Enter 3. Press Shift Cal and scroll to the CAL PASS command. 4. Enter the new password from the keypad.
Verification and Calibration - B 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 ! ! AC Source calibration program Rev B.00.00 ! ASSIGN @Ac TO 705 ! PRINT TABXY(5,5),"This program will calibrate the 6811B/12B/13B AC Power Solutions." PRINT TABXY(5,7),"Equipment requirements are: Agilent3458A or equivalent DVM" PRINT TABXY(37,8),"0.
B - Verification and Calibration 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810 820 830 840 850 860 870 880 890 900 910 920 930 940 950 960 970 980 990 1000 1010 1020 1030 1040 1050 1060 1070 1071 1072 1080 1090 1100 OUTPUT @Ac;"CAL:LEV P1" WAIT 10 INPUT "Enter DC voltage reading from DVM",Dc_p1 PRINT TABXY(25,9),"Point 1 entered" OUTPUT @Ac;"CAL:DATA";Dc_p1 OUTPUT @Ac;"CAL:LEV P2" WAIT 10 INPUT "Enter DC voltage reading from DVM",Dc_p2 PRINT TABXY(2
Verification and Calibration - B 1110 1120 1130 1140 1150 1160 1170 1180 1190 1191 1200 1210 1220 1230 1240 1250 1260 1270 1280 1290 1300 1310 1320 1330 1340 1350 1360 1370 1380 1390 1400 1410 1420 1430 1440 1450 1460 1470 1480 1490 1500 1510 1520 1530 1540 1550 1560 1570 1580 1590 1600 1610 1620 1630 1640 1650 1660 1670 1680 PRINT TABXY(15,9),"3. Connect the 3458A across the current shunt" PRINT TABXY(15,11),"4. Set the 3458A to AC rms VOLTS" PRINT TABXY(15,13),"5.
C Error Messages Error Number List This appendix gives the error numbers and descriptions that are returned by the ac source. Error numbers are returned in two ways: ♦ Error numbers are displayed on the front panel ♦ Error numbers and messages are read back with the SYSTem:ERRor? query. SYSTem:ERRor? returns the error number into a variable and returns two parameters: an NR1 and a string. The following table lists the errors that are associated with SCPI syntax errors and interface problems.
C - Error Messages –161 –168 –170 –171 –178 Invalid block data [e.g., END received before length satisfied] Block data not allowed Expression error Invalid expression Expression data not allowed –200 –221 –222 –223 –224 –225 –270 –272 –273 –276 –277 Execution Errors –200 through –299 (sets Standard Event Status Register bit #4) Execution error [generic] Settings conflict [check current device state] Data out of range [e.g.
Error Messages - C 40 41 42 43 44 45 70 80 200 201 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 401 402 403 404 405 406 600 601 602 603 604 605 606 607 608 609 610 Voltage selftest error, output 1 Voltage selftest error, output 2 Voltage selftest error, output 3 Current selftest error, output 1 Current selftest error, output 2 Current selftest error, output 3 Fan voltage failure Digital I/O selftest error Device-Dependent Errors 100 through 32767 (sets Standard Event Status Register bit #3)
D Line Voltage Conversion WARNING: Shock Hazard Hazardous voltage can remain inside the unit even after it has been turned off. This procedure should only be done by qualified electronics service personnel. Open the Unit ♦ Turn off the ac power to the unit and disconnect the power cord from the power outlet. ♦ Remove the four screws that secure the two carrying straps and outer cover (use a T25 Torx drive).
D - Line Voltage Conversion ♦ You need only to lift the board out of the way, you do not need to disconnect any cables. ♦ Locate the connector in front of the power transformer. ♦ For 100 V, 200 V, or 208 V operation, install the plug on the connector labeled: 200 V input. For 120 V or 230 V operation, install the plug on the connector labeled: 240 V input. ♦ Replace the pc board and inner cover. NOTE: Be sure to replace all of the screws removed in steps 9 and 11.
Index —A— ac line conversion, 85 accessories, 12 airflow, 22 annunciators φ1, 38 Addr, 38 Cal, 38 CC, 38 CV, 38 Dis, 38 Err, 38 OCP, 38 Prot, 38 Rmt, 38 Shift, 38 SRQ, 38 Tran, 38 Unr, 38 AWG ratings, 25 —E— entry keys, 46 , 46 0 ...
Index —L— lethal voltages, 65 line fuse replacing, 35 line voltage conversion, 85 List, 50, 52 load regulation, 18 load voltage drops, 25 location, 22 low frequency operation (<45 Hz), 15, 63 —M— manuals, 11, 21 measure ac only, 48 ac+dc, 48 dc only, 48 meter ac, 48 ac+dc, 48 dc, 48 Meter AC+DC, 38 meter display keys Harmonic, 41 Input, 41 Meter, 41 —P— —N— non-volatile memory clearing, 58 storing, 39 —O— OCP, 49 offset, 48 operating features, 13 options, 12 OT, 49 output ac+dc, 48 characteristic, 15 c
Index interface cable, 30 pinouts, 29 —S— safety class, 12 safety summary, 3 safety warning, 12 saving operating states, 58 self-test, 31 selftest errors, 34 sense connections, 25 service guide, 12 shift annunciator, 32 shift key, 32 Slew rates programming, 55 SOA, 49 SOA limit, 16 specifications, 59 Step, 50 supplemental characteristics, 61 SYSTem LOCal, 29 REMote, 29 RWLock, 29 system errors, 81 system keys, 39 Address, 39 Error, 39 Interface, 39 Local, 39 RCL, 39 Save, 39 Shift, 39 equipment, 65 rms cu
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Manual Updates The following updates have been made to this manual since the print revision indicated on the title page. 4/15/00 All references to HP have been changed to Agilent. All references to HP-IB have been changed to GPIB.