® 5220A Transconductance Amplifier Instruction Manual PN 491936 June 1979 Rev. 3, 6/97 © 1997 Fluke Corporation. All rights reserved. Printed in USA All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days.
Table of Contents Section 1 Title Introduction and Specifications........................................................ 1-1 1-1. 1-2. 2 Introduction .......................................................................................... 1-1 Specifications ....................................................................................... 1-2 Operating Instructions....................................................................... 2-1 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 2-9. 2-10.
5220A Instruction Manual 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. 4 Preamplifier...................................................................................... A6 Driver ......................................................................................... A7 Output......................................................................................... A8 Analog Control........................................................................... A9 Front Panel .
Contents (continued) 4-40. 4-41. 5 List of Replaceable Parts................................................................... 5-1 5-1. 5-2. 5-3. 5-4. 5-5. 6 Introduction .......................................................................................... How to Obtain Parts ............................................................................. Manual Status Information ................................................................... Newer Instruments....................................
5220A Instruction Manual iv
List of Tables Table 1-1. 1-2. 2-1. 3-1. 4-1. 4-2. 4-3. 4-4. 4-5. 4-6. 4-7. 5-1. 5-2. 5-3. 5-4. 5-5. 5-6. 5-7. 5-8. 5-9. 5-10. 5-11. 5-12. 5-13. 5-14. 5-15. Title Accessories ............................................................................................................ Specifications......................................................................................................... Controls, Indicators, and Connectors.....................................................................
5220A Instruction Manual vi
List of Figures Figure 1-1. 2-1. 2-2. 2-3. 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 4-1. 4-2. 4-3. 4-4. 4-5. 5-1. 5-2. 5-3. 5-4. 5-5. 5-6. 5-7. 5-8. 5-9. 5-10. 5-11. 5-12. 5-13. 5-14. 5-15. Title 5220A Transconductance Amplifier...................................................................... Outline Drawings ................................................................................................... Controls, Indicators, and Connectors................................................
5220A Instruction Manual 6-1. 6-2. 7-1. 7-2. 7-3. 7-4. 7-5. 7-6. 7-7. 7-8. 7-9. Rack Mounting Kit ................................................................................................ Rack Slide Kit........................................................................................................ Interconnect Diagram............................................................................................. Chassis Wiring....................................................................
Contents (continued) ix
5220A Instruction Manual ajs36f.
Section 1 Introduction and Specifications 1-1. Introduction The Model 5220A is a transconductance amplifier designed to operate as either a stand alone unit or an extension of the Fluke Model 5100 Series Calibrator. Functionally, the instrument operates as a precision ac/dc current source for calibrating current shunts and/or current meters. As the name (transconductance amplifier) implies, the output current level is a function of an input control voltage.
5 220A Instruction Manual selection switches are inside the 5220A. Refer to Section 4 of this manual for information on how to properly set the line power switches. Accessories available for use with the 5220A are listed and described in Table 1-1. The rack mounting kits are designed for use with a standard 19-inch equipment rack. The Model Y5020A is a precision current shunt recommended for use in calibrating the 5220A. Specify both model number and description when ordering accessories. Table 1-1.
Introduction and Specifications Specifications 1 Table 1-2. Specifications (cont.) Electromagnetic Compatibility This instrument is designed to operate in Standard Laboratory environments where in electromagnetic environment is highly controlled. If used in areas with RF fields >0.4 V/m there could be errors in measurement. DC Mode (including 5100 Series B) Output Range ±1 to ±19.9999 A Accuracy of Output ±(0.025 % of selected output + 1 mA) Resolution ±0.1 mA Temperature Coefficient ±(0.
5 220A Instruction Manual Table 1-2. Specifications (cont.) General 1-4 Load Capability Drives all resistive and capacitive loads consistent with current and compliance voltage capability. For inductive loads greater than 1 µH and less than maximum inductive loads, output current is limited to 16 A rms (22.
Introduction and Specifications Specifications 1 ajs01f.wmf Figure1-1.
5 220A Instruction Manual 1-6
Section 2 Operating Instructions 2-1. Introduction This section of the manual contains information concerning the installation and operation of the Model 5220A transconductance Amplifier. It is recommended that the contents of this section be read and understood before any attempt is made to operate the unit. Should any difficulties arise during operation, contact your nearest John Fluke Sales representative, or the John Fluke Mfg. Co., Inc., P.O. Box C9090, Everett, WA 98206; telephone (206) 347-6100.
5 220A Instruction Manual 2-4. Fuse Replacement 2-5. AC Line Fuse The ac line fuse is accessible by way of a rear-panel fuse holder located to the left of the input power connector. If fuse replacement is required, disconnect the 5220A from line power and remove the fuse cap and fuse (twist the fuse cap ccw using a screw driver). Select and install a replacement fuse whose rating is compatible with the local line voltage. 1. 100 to 120 V ac use fuse type MDA 3 A 2. 200 to 240 V ac use fuse type MDX 1.
Operating Instructions Operating Features 2 ajs02f.wmf Figure 2-1.
5 220A Instruction Manual Table 2-1. Controls, Indicators, and Connectors Ref. No 1 Name STATUS Indicators Function Three LEDs that light on an individual basis to indicate that the 5220A has exceeded an operating limit. When the limit condition is detected the 5220A is switched to the standby mode. When the limit condition is cleared the LED will remain lit until the 5220A is commanded to the operate mode.
Operating Instructions Operating Notes 2 Table 2-1. Controls, Indicators, and Connectors (cont.) Ref. No Name Function 8 Power Connector Provides the means of connecting the 5220A to ac line power by way of a 3-wire power cord. 9 Fuse Holder Houses the ac line fuse and allows easy access for fuse replacement. 10 Ground Connector A binding post positioned to provide a convenient connection to chassis ground.
5 220A Instruction Manual 2-13. Input Voltage Selection, Front/Rear Selection of the front or rear terminals for control voltage input is manually accomplished by pressing the INPUT push button switch on the front panel. Each depression alternately selects front or rear as indicated by the lit FRONT/REAR LED indicator. This switch is active in the local mode, and inactive in the remote mode. 2-14.
Operating Instructions Operating Notes 2 connected to the output before the condition can be cleared. Overcompliance is detected as an output voltage outside the range of +4 V dc or 3 V rms ac. Output current in excess of 20 A will cause an overcurrent indication. To correct the condition, the input control voltage must be reduced to an acceptable level. 2-18. Audible Output When the 5220A is used to output high current at high frequencies (above 10 A and 1 kHz) it may emit an audible tone.
5 220A Instruction Manual ajs03f.wmf Figure 2-2.
Operating Instructions Operation 2 ajs04f.wmf Figure 2-3. Typical Transconductance Error for Inductive Loads 2-20. Operation The following procedure is suggested for operating the 5220A. With reference to the previous paragraphs proceed as follows: 1. Connect the 5220A to the 5100 Series Calibrator via the Y5000 Interface if remote operation is desired. See the 5100B/Y5000 Instruction Manuals for details. 2. Connect the 5220A to line power. 3.
5 2 20A Instruction Manual 7. Determine the active output terminals (front or rear) by connecting a short jumper wire between the front-panel CURRENT OUTPUT terminals and then pressing the OPR/STDBY switch. If the OVERCOMPLIANCE LED lights, the rear output terminals are active. Otherwise, the OPR LED will light indicating that the front CURRENT OUTPUT terminals are active. 8. Press the STDBY switch and then remove the short from the front output terminals. 9.
Section 3 Theory of Operation 3-1. Introduction This section of the manual contains an overall functional description followed by a detailed circuit analysis of the 5220A. Both descriptions are supported by block diagrams. Component level descriptions contained in the circuit analysis are referenced to the detailed schematics in Section 8 of this manual. 3-2. Overall Functional Description 3-3. General The 5220A is a transconductance amplifier.
5 220A Instruction Manual ajs05f.wmf Figure 3-1.
Theory of Operation Overall Functional Description 3 The transconductance amplifier is a three-stage, closed-loop amplifier whose feedback signal is proportional to the 5220A output (load) current. It consists of the A5 Preamp, the A6 Driver, the A7 Output, and a precision four-terminal shunt. Input voltage to the amplifier is presented, by way of front or rear input terminals, to the A5 Preamp.
5 220A Instruction Manual 3-5. Digital Section The logic portion of the 5220A controls the sequencing of input relays (front/rear) and other control signals that turn the transconductance amplifier on and off. It also provides drive commands to light appropriate front panel status LEDs. Inputs to the logic are in the form of local/remote control commands from the front panel switches or the remote MIS Bus Interface, and overload signals from the analog control circuit.
Theory of Operation Circuit Analysis 3 The A4 Regulator is designed to convert the ac outputs from the three remaining secondary windings of T1 into three sets of isolated and regulated voltages: +5 V dc, +15/-15 V dc, and +5 V dc ISO (isolated). Each voltage is produced using conventional regulating techniques. That is, it is rectified, filtered, regulated by a three-terminal regulator, and filtered again before being output. A fifth voltage, Line Mon (monitor), is also produced on the A4 Regulator.
5 220A Instruction Manual 3-8. Preamplifier The A5 Preamplifier, as shown in Figure 3-4, is a high-gain amplifier designed to accept a front/rear panel input signal and provide an amplified output to the A6 Driver stage of the transconductance amplifier. It consists of a high-gain differential amplifier with feedback resistors, front/rear input select relays, and turn-on/off control circuitry.
Theory of Operation Circuit Analysis 3 the rate at which the input voltage is applied to the A5 Preamplifier when the 5220A is switched from standby to operate. This is necessary to prevent a step output which, if applied to an inductive load, would result in an overvoltage transient, forcing the 5220A back to standby. In standby both input select relays, K1 and K2, are open, capacitors, C3 and C12, are discharged, and the photo resistor U3 is a very high impedance with the LED drive removed.
5 220A Instruction Manual string is used as a voltage source to set the quiescent bias for the remaining stages of the complementary A7 Driver and A7 Output. Variable resistor R13 is used to set the initial bias voltage. ajs10f.wmf Figure 3-5.
Theory of Operation Circuit Analysis 3 3-10. A7 Output The A7 Output is a discrete-component, complementary-output, high-current amplifier which serves as the final output stage of the transconductance amplifier. See Figure 3-6. It consists of a pair of driver transistors, Q101 and Q102; two parallel pair(s) of output transistors, Q103, Q104 and Q105, Q106; a thermal sensing transistor, Q107; and a thermal overload switch S101.
5 220A Instruction Manual 3-11. A8 Analog Control The A8 Analog Control Assembly, as shown in Figure 3-7, contains an overcompliance detector, an overcurrent detector and two TTL-to-FET level shifters. The detection circuits are used to switch the 5220A to standby when an overcurrent or overcompliance condition occurs. The level shifters are driven by the A10 Logic to control the turn-on/off sequencing of the transconductance amplifier. ajs12f.wmf Figure 3-7.
Theory of Operation Circuit Analysis 3 it were a logic level. That is, voltages from 0 to an approximate 2 V threshold are considered a low logic level. A high logic level is approximately 2 to 4.5 V. The TTL-to-FET level shifters are used to interface turn on/off commands TTL logic levels, T1 and T2, from the A10 Logic with the standby/operate control FETs in the transconductance amplifier. Both level shifters are identical in design. The input is designed to respond to voltage levels from +0.01 to +5.
5 220A Instruction Manual ajs13f.wmf Figure 3-8. A10 Logic Simplified Block Diagram Loss or interruption of the +15/-15 V dc supply output causes the Line Mon (monitor) input from the power supply to go low. Normally, the line monitor input is a clipped fullwave rectified 60 Hz waveform which is generated on the A4 Regulator Assembly. The negative-going edge is used as the trigger for monostable U11-7 which is timed to provide an output pulse of approximately 0.1 second.
Theory of Operation Circuit Analysis 3 input is present. Under normal operating condition the reset command is high at U9-10 and low at U3-10. When the 5220A is switched from remote to local operation the local/remote logic triggers monostable U11-10 in the reset logic circuit. The result is a momentary positivegoing pulse at the Q output of U11-10. This in turn drives the complementary reset lines of U9-10 and U3-10.
5 220A Instruction Manual The shift-right mode is selected when flop-flop U17-1 responds to an operate command (D-input low) and drives the register’s S0 input high and the S1 input low. This results in the high input at U22-2 being sequentially propagated through the register and its four outputs (QD, QC, QB and QA) being driven high (operate). The outputs of the shift register are used as control signals to sequence the turn-on and turn-off of the transconductance amplifier.
Theory of Operation Circuit Analysis 3 indicates standby, high indicates operate. The not Operate signal is received from the A11 MIS Bus Interface and is effective only when the 5220A is in the remote control mode. In the high state, the signal clears flip-flop U10-9 to invoke the standby mode. When not Operate goes low it presets flip-flop U10-9 (by way of U8-7) to invoke the operate mode. Overload signals received at the standby/operate logic include; Thermal Sw(itch) 1, Overcompliance and Overcurrent.
5 220A Instruction Manual 3-19. Failure Status Logic The failure status logic consists of three D-type flip-flop (U16-1, U16-13, and U17-13) and their associated logic gates and drivers. Its function is to store failure conditions detected by other parts of the A10 Logic and to drive the front panel STATUS indicators. An optical isolator is also included for providing an Interface Overload Status signal to the A11 MIS Bus Interface.
Theory of Operation Circuit Analysis 3 enabled so that a status read can take place when BC0 and BC2 go high. Status read causes the w/not R line to go low for the duration of the BC0 and BC2 inputs. At the end of status read, the RS flop-flop is reset, closing the w/not R gate (U5-8) until it is reopened by another programming input. This process is repeated every 16 ms because the 5100 Series Calibrator refreshes the programming input to the 5220A at this rate.
5 220A Instruction Manual 3-18
Section 4 Maintenance 4-1. Introduction WWarning These servicing instructions are for use by qualified personnel only. To avoid electric shock, do not perform any servicing other than that contained in the operation instructions unless you are qualified to do so. This section of the manual contains maintenance information for the Model 5220A Transconductance Amplifier.
5 220A Instruction Manual 4-2. Service Information The 5220A is warranted for a period of 1-year upon delivery to the original purchaser. The warranty is located on the back of the title page. Factory authorized calibration and service for each Fluke product is available at various worldwide locations. A complete list of these service centers is included in Section 7 of this manual.
Maintenance General Maintenance 4 ajs15f.wmf Figure 4-1. Internal Component/Assembly Locations Caution To prevent component damage observe static awareness precautions during instrument disassembly/assembly. Refer to the yellow insert sheet following Section 1.
5 220A Instruction Manual 4-7. Internal Components/Assemblies All internal switches, fuses, and calibration adjustments can be accessed by removing the top cover and the large inner cover from the 5220A. The location of each of the applicable components is shown in Figure 4-1. Procedures for setting, replacing, and/or adjusting these components are given later in this section of the manual. 4-8. Front Panel Removal There are no electrical components physically mounted on the front panel of the 5220A.
Maintenance General Maintenance 4 4-11. A6 Driver and A7 Output Assembly Removal The A6 Driver and A7 Output PCB Assemblies comprise a plug-in assembly referred to in this procedure as the A6 Driver/A7 Output. Use the following procedure to remove the A6 Driver/A7 Output: 1. 2. 3. 4. 5. 6. Remove the top cover from the 5220A. Remove the large inner cover. Remove the four screws from the sheet-metal portion of the A7 Output Assembly.
5 220A Instruction Manual 4-14. Fuse Replacement 4-15. Ac Line Fuse The ac line fuse is accessible by way of a rear-panel fuse holder located to the left of the input power connector. If fuse replacement is required, disconnect the 5220A from line power and remove the fuse cap and fuse (twist the fuse cap ccw using a screwdriver). Select and install a replacement fuse whose rating is compatible with the local line voltage. • 100 to 120 V ac: Use fuse type MDA 3 A • 220 to 240 V ac: Use fuse type MDX 1.
Maintenance General Maintenance 4 ajs16f.wmf Figure 4-2. Line Voltage Selection 4-18. Output Terminal Selection, Front/Rear Either the front or rear output terminals (but not both simultaneously) may be selected to provide the current output connections. The active terminals are determined by the position of a pair of screws that serve as output jumpers. See Figure 4-1 for the output jumper (screw) locations. Installing the screws in the two holes marked FRONT enables the front CURRENT OUTPUT terminals.
5 220A Instruction Manual Caution To ensure proper instrument operation make sure that both screws are installed and that they are both in either the FRONT or REAR locations. 1. Disconnect the 5220A from line power. 2. Remove both the top and large inner covers from the 5220A. 3. Locate the output jumper screws as shown in Figure 4-1. 4. Install and secure the screws in the two FRONT or REAR holes, as desired. 5. Reinstall the top and inner covers. 4-19.
Maintenance Performance Test 4 4-22. Front Panel Tests Use the following procedure to check the operation of the 5220A front-panel controls and LEDs: 1. With the unit in the standby mode, connect jumper wires between the enabled (front/rear) output terminals. Use a 4-inch length of 16-gauge insulated wire. 2. Press the OPR/STDBY pushbutton. The OPR LED should light and the STDBY LED should go out. 3. Press the INPUT pushbutton to select the rear input. 4.
5 220A Instruction Manual 4-24. DC Accuracy and Line Regulation The following procedure is used to check the dc accuracy of the 5220A output current: 1. Connect the precision shunt to the enabled output terminals on the 5220A. 2. Connect the DVM to the sense terminals on the precision shunt. Observe polarity. 3. Set the DVM to the 200 mV dc range. 4. Connect the output of the dc voltage calibrator to the VOLTAGE INPUT terminals on the 5220A; positive to red, negative to black. 5.
Maintenance Performance Test 4 7. Set the 5220A to the standby mode. 8. Disconnect the load resistor and the distortion analyzer from the 5220A output terminals. 4-26. Frequency Response Note When high ac currents at high frequencies are being used, and minimization of inductive coupling is required, it is recommended that you twist the current carrying leads between the 5220A and load.
5 220A Instruction Manual 4. Increase the ac voltage calibrator output in 1.0V rms increments. The 5220A should switch to the standby mode at between 20.0 and 24.0 V rms. The OVERCURRENT LED should also light. 5. Set the ac voltage calibrator output to zero volts. 6. Disconnect the load resistor from the 5220A output terminals. 4-28. Overvoltage Trip Test The following procedure is used to check the overvoltage trip setting on the 5220A: 1.
Maintenance Calibration Adjustments 4 4-30. Initial Conditions Before starting the following procedures, condition the 5220A as follows: 1. Disconnect all input and remote connections to the 5220A, and connect a short jumper wire between the selected output terminals. 2. Connect the unit to line power and set the POWER switch to ON. Only the STDBY and FRONT LEDs should light. 3. Set the 5220A to the operate mode and allow it to warmup for at least 30 minutes. 4.
5 220A Instruction Manual 4-33. Output Bias Adjustment This procedure is used to adjust the bias current for both the A6 Driver and the A7 Output. The bias adjustment (R13) is located on the A6 Driver PCB Assembly. 1. Connect the ac voltage calibrator to the front-panel VOLTAGE INPUT terminals on the 5220A. 2. Connect the load resistor (.1 ohm) to the enabled output terminals on the 5220A. 3. Connect the distortion analyzer input to the sense terminals on the load resistor. 4.
Maintenance Replacement of Selected Components 4 8. Set the 5220A to the standby mode. 9. Disconnect the shunt and voltmeter from the 5220A output terminals. 4-36. Overcurrent Adjustment This procedure is used to adjust the overcurrent trip level of the 5220A. The overcurrent adjustment (R21) is located on the A8 Analog Control PCB Assembly. 1. Connect the load resistor (0.1 ohm) to the enabled output terminals on the 5220A. 2. Set the calibrator output to 23.5 V rms, 50 Hz. 3.
5 220A Instruction Manual 4-39. Resistors R11 and R12 Resistors R11 and R12 are associated with the Input Offset Adjustment procedure and the setting of the ZERO ADJ potentiometer R6. Use the following procedure to select the proper replacements for R11 and R12: 1. Disconnect the 5220A from line power. 2. Remove the top and large inner covers from the unit. 3. Remove the two fuses (F1 and F2) from the A3 Cap Bus PCB Assembly. 4.
Maintenance Replacement of Selected Components 4 Table 4-4. Replacement Resistors for R11 and R12 DVM Reading (±mV dc) Selected Value for R11/R12 Fluke Part Number 0.87 to 0.174 1.00 kΩ 168229 0.175 to 0.261 2.00 kΩ 235226 0.262 to 0.348 3.01 kΩ 312645 0.349 to 0.435 4.02 kΩ 235325 0.436 to 0.522 4.99 kΩ 168252 0.523 to 0.609 6.04 kΩ 285189 0.610 to 0.696 6.98 kΩ 261685 0.697 to 0.783 8.06 kΩ 347229 4-40.
5 220A Instruction Manual Table 4-5. Replacement Resistors for R13 Corrected DVM Indication (mV dc) Selected Value for R13 (Ω) Fluke Part Number 102.000 to 101.800 1740 Ω 357756 101.800 to 101.600 1500 Ω 376947 101.600 to 101.400 1282 Ω 330472 101.400 to 101.200 1100 Ω 347161 101.200 to 101.000 900 Ω 460519 101.000 to 100.800 698 Ω 289330 100.800 to 100.600 499 Ω 289256 100.600 to 100.400 301 Ω 289173 100.400 to 100.200 100 Ω 357400 100.200 to 100.000 0Ω NA 4-41.
Maintenance Troubleshooting 4 ajs17f.wmf Figure 4-3.
5 220A Instruction Manual ajs18f.wmf Figure 4-4.
Maintenance Troubleshooting 4 Table 4-6. Mainframe and Digital Section Troubleshooting Guide Step Instruction Yes No Go to 1 Set the 5220A POWER switch to OFF and disconnect the unit from line power. 2 2 Remove the top cover and the large inner cover from the 5220A. 3 3 Visually inspect the internal fuses (F2 through F7) and replace as required. 4 4 Connect a shorting jumper between the front panel VOLTAGE INPUT terminals.
5 220A Instruction Manual Table 4-6. Mainframe and Digital Section Troubleshooting Guide (cont.) Step 15 Instruction Yes No Go to Check the line voltage switch settings on A2 Transformer Assembly. They should be set to comply with the local line voltage. If some voltages are in limits and some are out, the problem is on the A4 Regulator or the A3 Cap Bus. If a voltage is low, check for power supply loading. If a voltage is high, the regulator IC is likely the cause.
Maintenance Troubleshooting 4 Table 4-6. Mainframe and Digital Section Troubleshooting Guide (cont.) Step Instruction 33 The mainframe and digital section are operational; the transconductance amplifier (A5, A6, A7) is defective. Check out and repair the transconductance amplifier using Table 4-7, Analog Section Troubleshooting Guide. 34 Is OVERCURRENT LED lit? 35 Check the following and repair as required: 1. Open feedback loop, current shunt to A5 Preamplifier. 2.
5 220A Instruction Manual ajs19f.wmf Figure 4-5.
Maintenance Troubleshooting 4 Table 4-7. Analog Section Troubleshooting Guide Step Instruction Yes No Go to 1 Complete the troubleshooting procedure given in Table 4-6. 2 2 Set the 5220A POWER switch to OFF. 3 3 Connect a jumper wire between the front panel VOLTAGE INPUT terminals. 4 4 Connect a 0.1 Ω resistor between the selected output terminals, then connect a DVM across the 0.1 Ω resistor. 5 5 Set the POWER switch to ON and select the operate mode.
5 220A Instruction Manual Table 4-7. Analog Section Troubleshooting Guide (cont.) Step 4-26 Instruction Yes No Go to 19 Set the 5220A to the operate mode and read the DVM. 20 20 Does the DVM read approximately +0.1 V dc? 26 22 21 Does the DVM read approximately 0 V? 22 23 22 Check relay K1 and associated drive circuits on the A5 Preamplifier PCB Assembly. Also check resistors R1, R2, and R13 for open circuits.
Section 5 List of Replaceable Parts 5-1. Introduction This section contains an illustrated list of replaceable parts for 5220A. Parts are listed by assembly; alphabetized by reference designator. Each assembly is accompanied by an illustration showing the location of each part and its reference designator.
5 220A Instruction Manual • Fluke stock number • Description (as given under the Description heading) • Quantity • Instrument Model, Serial Number, and Firmware Numbers 5-3. Manual Status Information The Manual Status Information table that precedes the parts list defines the assembly revision levels that are documented in the manual. Revision levels are printed on the component side of each PCA. 5-4.
List of Replaceable Parts Service Centers A11 MIS Bus Interface PCB Assembly 491266 C A13 Output Termination PCB Assembly 491274 B 5 5-3
5 220A Instruction Manual Table 5-1. 5220A Final Assembly Reference Designator Fluke Part No.
List of Replaceable Parts Service Centers 5 Table 5-1. 5220A Final Assembly (cont.) Reference Designator Description Fluke Part No. Total Quantity H11 Washer, Lock, Internal, Steel, #4 110403 2 H12 Nut, Machine, Hex, Steel, 4-40 110635 2 H13 Screw, Machine, PH, P, Steel, 6-32 x 0.500 152173 13 H14 Nut, Machine, Hex, BR, 1/4-28 110619 9 H15 Washer, Shoulder, Fiber, 0.250 ID 110833 4 H16 Screw, Machine, PH, P, Steel, 8-32 x 0.
5 220A Instruction Manual Table 5-1. 5220A Final Assembly (cont.) Reference Designator 5-6 Description Fluke Part No. Total Quantity MP18 Output Bus, Plus- Aft 486542 1 MP19 Output Bus, Spacer 486559 1 MP20 Assembly, Red 10-32 Binding Post Bracket 794404 2 MP21 Assembly, Black 10-32 Binding Post Bracket 794412 2 MP22 Shunt Bus, Minus 490524 1 MP23 Shunt Bus, Plus 497974 1 MP241 Banana Jack, Panel 101550 4 MP25 Spacer, Round, Nylon, 6-32 x 1.
List of Replaceable Parts Service Centers 5 Table 5-1. 5220A Final Assembly (cont.) Reference Designator Description Fluke Part No. Total Quantity MP50 Foot, Bail Stand 292870 4 MP51 Spacer, Capacitor 489484 2 MP52 Filter, Retainer 576967 1 MP54 Nameplate, 0.350 x 1.3, Serial Number 472795 1 MP55 Cover, Shunt 489948 1 R2, R5 Resistor, CC, 100, ±10 %, 2 W 109934 2 5220A Instruction Manual 491936 1 Zener, Transient Suppressor, 7.
5 220A Instruction Manual ajs20f.wmf Figure 5-1.
List of Replaceable Parts Service Centers 5 ajs21f.wmf Figure 5-1. 5220A Final Assembly (cont.
5 220A Instruction Manual ajs22f.wmf Figure 5-1. 5220A Final Assembly (cont.
List of Replaceable Parts Service Centers 5 ajs23f.wmf Figure 5-1. 5220A Final Assembly (cont.
5 220A Instruction Manual ajs24f.wmf Figure 5-1. 5220A Final Assembly (cont.
List of Replaceable Parts Service Centers 5 ajs25f.wmf Figure 5-1. 5220A Final Assembly (cont.
5 220A Instruction Manual ajs26f.wmf Figure 5-1. 5220A Final Assembly (cont.
List of Replaceable Parts Service Centers 5 ajs27f.wmf Figure 5-1. 5220A Final Assembly (cont.
5 220A Instruction Manual ajs28f.wmf Figure 5-1. 5220A Final Assembly (cont.
List of Replaceable Parts Service Centers 5 Table 5-2. A1 Motherboard PCB Assembly Reference Designator Fluke Part No. Total Quantity J10, J20, J30, Connector, PCB Edge, Rec., 0.150 CTR, 40 Position J40, J50, J70, J90 422550 7 J1 Header, 1 Row, 0.156 CTR, 10 Pin 446724 1 J10, J85 Connector, PCB Edge, Rec., 0.150 CTR, 24 Position 295352 2 J80 Connector, PCB Edge, Rec., 0.150 CTR, 22 Position 459883 1 MP1 Cover, AC Switch 475681 1 MP2 Pushbutton, SML Rect. C L Repl.
5 220A Instruction Manual Table 5-3. A2 Power Transformer Assembly Reference Designator Description Fluke Part No. Total Quantity F4 – F7 Fuse, 0.25 x 1.25, 0.5 A, 250 V, Slow 109322 4 H1 Screw, Machine, PH, P, Steel, 8-32 x 0.250 228890 8 H2 Screw, Machine, PH, P, Steel, 6-32 x 0.
List of Replaceable Parts Service Centers 5 Table 5-4. A3 Capacitor Bus PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C1 – C8 Capacitor, AL, 50,000 µF, +100-10 %, 15 V, Hi Term 432525 8 CR1, CR3 Diode, SI, 50 PIV, 20.0 A 483206 2 CR2, CR4 Diode, SI, 50 PIV, 20.0 A 483214 2 F2, F3 Fuse, 0.25 x 1.25, 30 A, 32 V, Fast 500793 2 H14 Nut, Machine, Hex, BR, ¼-28 110619 9 H15 Washer, Shoulder, Fiber, 0.
5 220A Instruction Manual ajs38f.wmf Figure 5-4.
List of Replaceable Parts Service Centers 5 Table 5-5. A4 Regulator PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C9, C10, C16, C17 Capacitor, AL, 4700 µF, +75-20 %, 16 V 379370 4 C11, C14, C15, C18 Capacitor, TA, 22 µF, ±20 %, 25 V 357780 4 C12, C13 Capacitor, AL, 2200 µF, +75-20 %, 25 V 392720 2 CR5 – CR7 Diode, SI, Rectifier, Bridge, BV = 100 V, IO = 1.
5 220A Instruction Manual ajs39f.wmf Figure 5-5.
List of Replaceable Parts Service Centers 5 Table 5-6. A5 Preamplifier PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C1, C2 Capacitor, CER, 100 pF, ±2 %, 100 V, COG 512848 2 C3, C5, C6 Capacitor, CER, 0.
5 220A Instruction Manual Table 5-6. A5 Preamplifier PCB Assembly (cont.) Reference Designator Description Fluke Part No. Total Quantity R19 Resistor, MF, 422 Ω, ±1 %, 0.125 W, 100 PPM 288506 1 R21, R23 Resistor, CF, 1 k, ±5 %,, 0.25 W 343426 2 R22 Resistor, CF, 1.2 k, ±5 %, 0.25 W 441378 1 R24 Resistor, CF, 33k, ±5 %, 0.
List of Replaceable Parts Service Centers 5 ajs40f.wmf Figure 5-6.
5 220A Instruction Manual Table 5-7. A6 Driver PCB Assembly Reference Designator 5-26 Description Fluke Part No. Total Quantity C1 Capacitor, Polyester, 0.027 µF, ±10 %, 250 V 267120 1 C2 Capacitor, TA, 6.8 µF, ±20 %, 35 V 363713 1 C3, C4 Capacitor, CER, 180 pF, ±10 % 1000 V, S3N 105890 2 C5 Capacitor, CER, 5000 pF, ±20 %, 100 V, Z5V 175232 1 C6 Capacitor, TA, 220 µF, ±20 %, 6 V 408682 1 C7 Capatitor, CER, 0.
List of Replaceable Parts Service Centers 5 Table 5-7. A6 Driver PCB Assembly (cont.) Reference Designator Description Fluke Part No. Total Quantity R28, R29 Resistor, CF, 6.8 k, ±5 %, 0.25 W 368761 2 R30, R31 Resistor, CC, 10 Ω, ±10 %, 0.5 W 108092 2 TP1 – TP4 Terminal, Un-insulated, Feed-through, Hole, Turret 179283 4 VR1, VR2 h Zener, Uncompensated, 4.3 V, 5 %, 20.0 mA, 0.4 W 180455 2 h Indicates a static-sensitive part. ajs41f.wmf Figure 5-7.
5 220A Instruction Manual Table 5-8. A7 Output PCB Assembly Reference Designator Description Total Quantity H1 Screw, Machine, PH, P, Steel, 4-40 x 0.375 152124 2 H2 Washer, Lock, Internal, Steel, #4 110403 2 H3 Nut, Hex, S. Steel, 4-40 147611 2 H4 Screw, Machine, PH, P, Steel, 6-32 x 0.250 152140 2 H5 Screw, Machine, PH, P, Steel, 6-32 x 0.750 114223 8 H6 Washer, Lock, Internal, Steel #6 110338 1 H7 Nut, Hex, Steel, 6-32 110551 1 H8 Screw, Machine, PH, P, Steel, 8-32 x 0.
List of Replaceable Parts Service Centers 5 ajs42f.wmf Figure 5-8.
5 220A Instruction Manual ajs43f.wmf Figure 5-8. A7 Output PCB Assembly (cont.
List of Replaceable Parts Service Centers 5 Table 5-9. A8 Analog Control PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C1 Capacitor, CER, 0.10 µF, ±20 %, 50 V, X7R 853650 1 C2 Capacitor, Polyester, 0.22 µF, ±10 %, 100 V 436113 1 C3 Capacitor, TA, 0.68 µF, ±10 %, 35 V 182790 1 CR1 – CR10 h Diode, SI, BV = 20.0 V, IO = 50 Machine, Selected IR 348117 10 CR11 h Diode, SI, BV = 75.
5 220A Instruction Manual ajs44f.wmf Figure 5-9.
List of Replaceable Parts Service Centers 5 Table 5-10. A9 Front Panel PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C1 Capacitor, CER, 0.22 µF, ±20 %, 50 V, Z5U 309849 1 DS1 – DS9 LED, Red, PCB mount, Luminous Intensity = 0.5 MCD 369777 9 MP1 Cover, Pushbutton, Switch 401299 3 MP2 Switch Part, SPST, Spring 414516 3 MP3 Switch Part, SPST, Fixed Contact 416875 3 MP4 Pushbutton-Square-, Dark Putty Grey 406728 3 R1 – R9 Resistor, CF, 220 Ω, ±5 %, 0.
5 220A Instruction Manual Table 5-11. A10 Logic PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C1, C3, C4 Capacitor, Mica, 100 pF, ±5 %, 500 V 148494 3 C2 Capacitor, TA, 4.7 µF, ±20 %, 25 V 161943 1 C5 Capacitor, TA, 2.2 µF, ±20 %, 20 V 161927 1 C6 – C8 Capacitor, TA, 1 µF, ±10 %, 35 V 161919 3 C9 Capacitor, TA, 22 µF, ±20 %, 15 V 423012 1 C10 – C14 Capacitor, CER, 0.22 µF, ±20 %, 50 V, Z5U 309849 5 C15 Capacitor, CER, 0.
List of Replaceable Parts Service Centers 5 ajs30f.wmf Figure 5-11.
5 220A Instruction Manual Table 5-12. A11 MIS Bus Interface PCB Assembly Reference Designator Description Total Quantity C1 Capacitor, TA, 4.7 µF, ±20 %, 25 V 161943 1 C2 Capacitor, TA, 22 µF, ±20 %, 15 V 423012 1 C3, C4 Capacitor, CER, 0.22 µF, ±20 %, 50 V, Z5U 309849 2 CR1 h Diode, SI, BV = 75.0 V, IO = 150 mA, 500 mW 203323 1 H1 Screw, Machine, PH, P, SEMS, Steel, 4-40, 0.
List of Replaceable Parts Service Centers 5 ajs31f.wmf Figure 5-12.
5 220A Instruction Manual Note The A12 shunt assembly is a suggested non-repairable assembly. Table 5-13. A12 Shunt Assembly Reference Designator 5-38 Description Fluke Part No. Total Quantity H1 Screw, Machine, SEMS, PH, P, Steel, 6-32 x 0.500 177030 4 H2 Screw, Machine, RH, SL, Steel, 6-32 x 2.
List of Replaceable Parts Service Centers 5 ajs32f.wmf Figure 5-13.
5 220A Instruction Manual Table 5-14. A13 Output Termination PCB Assembly Reference Designator Description Fluke Part No. Total Quantity C1 Capacitor, CER, 0.025 µF, 20 %, 100 V, Z5W 168435 1 C2 Capacitor, CER, 0.1 µF, +80-20 %, 25 V, Z5U 369199 1 R1 Resistor, MF, 40.2, ±1 %, 0.125 W, 100 PPM 245373 1 R2 Resistor, CF, 10 Ω, ±5 %, 0.25 W 340075 1 ajs33f.wmf Figure 5-14.
List of Replaceable Parts Service Centers 5 Table 5-15. A14 Extender PCB Assembly Reference Designator Description Fluke Part No. Total Quantity H1 Screw, Machine, SEMS, PH, P, Steel, 6-32, 0.250 178533 4 H2 Rivet, S-Tub, Oval, Steel, 0.118 x 0.218 103606 2 J1 Connector, PCB Edge, REC, 0.150 CTR, 40 Position 422550 1 J2 Connector, ACC, PCB Edge, Polarizing Insert 424572 1 MP1 Bracket, Right Angle, Tapped, Brass, 6-32 404525 4 ajs34f.wmf Figure 5-15.
5 220A Instruction Manual 5-42
Section 6 Option and Accessory Information 6-1. Introduction This section of the manual documents the options and accessories available for use with the 5220A. Currently, there are no options, and the accessories are limited to a choice of two rack-mounting kits and a precision current shunt for calibration purposes. Each is described in the following accessories subsection. 6-2. Accessories 6-3.
5 220A Instruction Manual ajs45f.wmf Figure 6-1.
Option and Accessory Information Accessories 6-4. 6 Rack Slide Kit (M00-280-610) The 5220A can be rack mounted in a 24-inch deep equipment rack using the Rack Slide Kit, model M00-280-610. Use the following procedure to install the kit: 1. Remove the horizontal side trim decal from both sides of the instrument. 2. Refer to Figure 6-2. Using the screws supplied with the kit, attach the chassis section (B) of the slide kit to each side of the unit. Use the center row of mounting holes. 3.
5 220A Instruction Manual ajs46f.wmf Figure 6-2.
Chapter 7 Schematic Diagrams 7-1
5220A Instruction Manual 5220A-1001 (Sheet 1 of 2) ajs47f.wmf Figure 7-1.
Schematic Diagrams 7 ajs48f.wm Figure 7-1. Interconnect Diagram (cont.
5220A Instruction Manual ajs49f.wmf Figure 7-2.
Schematic Diagrams 7 ajs50f.wmf Figure 7-2. Chassis Wiring (cont.
5220A Instruction Manual ajs51f.wmf Figure 7-3.
Schematic Diagrams 7 ajs52f.wmf Figure 7-3. Power Supply (cont.
5220A Instruction Manual ajs53f.wmf Figure 7-4.
Schematic Diagrams 7 ajs54f.wmf Figure 7-4. A5 Preamplifier PCB Assembly (cont.
5220A Instruction Manual ajs55f.wmf Figure 7-5.
Schematic Diagrams 7 ajs56f.wmf Figure 7-5. A6 Driver and A7 Output PCB Assemblies (cont.
5220A Instruction Manual ajs57f.wmf Figure 7-6.
Schematic Diagrams 7 ajs58f.wmf Figure 7-6. A8 Analog Control PCB Assembly (cont.
5220A Instruction Manual ajs59f.wmf Figure 7-7.
Schematic Diagrams 7 ajs60f.wmf Figure 7-7. A9 Front Panel PCB Assembly (cont.
5220A Instruction Manual ajs61f.wmf Figure 7-8.
Schematic Diagrams 7 ajs62f.wmf Figure 7-8. A10 Logic PCB Assembly (cont.
5220A Instruction Manual ajs63f.wmf Figure 7-9.
Schematic Diagrams 7 ajs64f.wmf Figure 7-9. A11 MIS Bus Interface PCB Assembly (cont.
5220A Instruction Manual 7-20
