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Summary of Contents for Keysight Technologies 668 A Series
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HP 5181-2813 LCD Display for the 6681A Single-Output 5000 W DC Power Supply Limited Availability Used and in Excellent Condition Open Web Page https://www.artisantg.com/91112-19 A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s . •...
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Keysight Series 668xA GPIB DC Power Supplies Service Manual Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
90 days from date of delivery. During the warranty period Keysight Technologies will, at its option, either repair or replace products which prove to be defective.
SAFETY CONSIDERATIONS GENERAL. This is a Safety Class 1 instrument (provided with terminal for connection to protective earth ground). OPERATION. BEFORE APPLYING POWER verify that the product is set to match the available line voltage, the correct line fuse is installed, and all safety precautions (see following warnings) are taken. In addition, note the instrument's external markings described under "Safety Symbols".
This document contains proprietary information protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated into another language without the prior consent of Keysight Technologies. The information contained in this document is subject to change without notice.
Instrument Identification Keysight Technologies instruments are identified by a 10-digit serial number. The format is described as follows: first two letters indicate the country of manufacture. The next four digits are a code that identify either the date of manufacture or of a significant design change.
Related Documents Change Sheet There may or may not be a Manual Change sheet included with this manual (see Manual Revisions). If one is included, be sure to examine it for changes to this manual. Operating Manual Each power supply is shipped with an operating manual (see Replaceable Parts, Chapter 5 for part numbers) that covers the following topics: ...
Safety Considerations This power supply is a Safety Class I instrument, which means it has a protective earth terminal. This terminal must be connected to earth ground through a power source equipped with a 4-wire, ground receptacle. Refer to the "Safety Summary"...
Verification Introduction This chapter provides test procedures for checking the operation of Keysight Series 668xA power supplies. The required test equipment is specified and sample performance test record sheets are included. Instructions are given for performing the tests either from the front panel or from a controller over the GPIB. Tests Two types of procedures are provided: Operation Verification tests and Performance tests.
Programming The Tests General Considerations Procedures are given for programming these tests either from the front panel keypad or from a GPIB controller. The procedures assume you know how to use the front panel keypad or how to program over the GPIB (see the Power Supply Operating Manual for more information).
Operation Verification Tests Table 2-3 lists the requirements for operation verification, which is a subset of the performance tests. Table 2-3. Operation Verification Tests Test Refer To Turn-On Checkout Power Supply Operating Manual Voltage Programming and Readback Accuracy Table 2-4 Current Programming and Readback Accuracy Table 2-5 Note: Record the results of Tests 2 and 3 in the appropriate Performance Test Record sheets...
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Figure 2-1. Constant Voltage (CV) Test Setup Verification 15 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Table 2-4. Constant Voltage (CV) Tests Action Normal Result Voltage Programming and Readback Accuracy This test verifies that the voltage programming, GPIB readback (GPIB system power supplies only), and front panel display functions are within specifications. With system power supplies, values read back over the GPIB should be the same as those displayed on the front panel.
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Table 2-4. Constant Voltage (CV) Tests (continued) Action Normal Result CV Source Effect (cont) Set the transformer to the nominal ac line voltage. Connect the DVM across +S and -S (see Fig. 2-1). Turn on the power supply and program the current to its maximum programmable value and the voltage to its full-scale value (see Table 2-2).
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Table 2-4. Constant Voltage (CV) Tests (continued) Action Normal Result Transient Recovery Time This test measures the time required for the output voltage to return to within 100mV of its final value following a 50% change in output load current. Measurements are made on both the unloading transient (from full load to 1/2 load) and the loading transient (from 1/2 load to full load).
Constant Current (CC) Tests Test Setup Connect the appropriate current monitoring resistor (see Table 2-l) as shown in Fig. 2-3. The accuracy of the resistor must be as specified in the table. Test Procedures The test procedures are given in Table 2-5. The tests are independent and may be performed in any order. The CC tests are: ...
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Table 2-5. Constant Current (CC) Tests (continued) Action Normal Result CC Load Effect This test measures the change in output current resulting from a change in load from full-load voltage to a short circuit. It is recommended that you use averaged readings for Steps 5 and 6 of this test (see Averaging AC Measurements at the end of this chapter).
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Table 2-5. Constant Current (CC) Tests (continued) Action Normal Result CC Source Effect This test measures the change in output current resulting from a change in ac line voltage from its minimum to its maximum value within the line voltage specifications. It is recommended that you use averaged readings for Steps 6 and 8 of this test (see "Averaging AC Measurements"...
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Figure 2-3. CC Load Effect Test Setup 22 Verification Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Averaging the CC Measurements The CC Load Effect and CC Source Effect tests measure the dc regulation of the power supply's output current. When doing these tests, you must be sure that the readings taken are truly dc regulation values and not instantaneous ac peaks of the output current ripple.
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Table 2-6. Performance Test Record Form Test Facility: __________________________________________ Report No.__________________________________________ __________________________________________ Date______________________________________________ __________________________________________ Customer___________________________________________ __________________________________________ Tested By___________________________________________ Model_____________________________________ Ambient Temperature (C)______________________________ Serial No.__________________________________ Relative Humidity (%)_________________________________ Options ____________________________________ Nominal Line Frequency (Hz)___________________________ Firmware Revision ___________________________ Special Notes: ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________...
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Table 2-7. Performance Test Record for Keysight Model 6680A MODEL Keysight _____________ Report No.______________ Date_____________________ Test Description Minimum Results Maximum Spec. Spec. Constant Voltage Tests Voltage Programming and Readback Low Voltage (0V) V -5mV ________mV +5mV Front Panel Display Readback - 7.5mV ________mV + 7.5mV...
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Table 2-7. Performance Test Record for Keysight Model 6681A MODEL Keysight_____________ Report No.______________ Date_____________________ Test Description Minimum Results Maximum Spec. Spec. Constant Voltage Tests Voltage Programming and Readback Low Voltage (0V) V -8mV ________mV +8mV Front Panel Display Readback - 12mV ________mV + 12mV High Voltage (8V) V...
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Table 2-7. Performance Test Record for Keysight Model 6682A MODEL Keysight_____________ Report No.______________ Date_____________________ Test Description Minimum Results Maximum Spec. Spec. Constant Voltage Tests Voltage Programming and Readback Low Voltage (0V) V -21mV ________mV +21mV Front Panel Display Readback - 32mV ________mV + 32mV High Voltage (21V) V...
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Table 2-7. Performance Test Record for Keysight Model 6683A MODEL Keysight_____________ Report No.______________ Date_____________________ Test Description Minimum Results Maximum Spec. Spec. Constant Voltage Tests Voltage Programming and Readback Low Voltage (0V) V -32mV ________mV +32mV Front Panel Display Readback - 48mV ________mV + 48mV High Voltage (32V) V...
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Table 2-7. Performance Test Record for Keysight Model 6684A MODEL Keysight_____________ Report No.______________ Date_____________________ Test Description Minimum Results Maximum Spec. Spec. Constant Voltage Tests Voltage Programming and Readback Low Voltage (0V) V -40mV ________mV +40mV Front Panel Display Readback - 60mV ________mV + 60mV High Voltage (40V) V...
Troubleshooting Shock Hazard: Most of the procedures in this chapter must be performed with power applied and protective covers removed. These procedures should be done only by trained service personnel aware of the hazard from electrical shock. This instrument uses components that can be damaged or suffer serious performance degradation due to ESD (electrostatic discharge).
Test Equipment Required Table 3-1. Test Equipment Required Equipment Purpose Recommended Model Logic Probe To check states of data lines. Keysight 545A Test Clips To gain access to IC pins. AP Products No. LTC Ammeter/Current Shunt To measure output current. Keysight 6680A &...
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Table 3-2. Selftest Error Codes/Messages Code and/or Description Probable Cause Selftest Error Message Codes/Messages El FP RAM Front panel RAM test failed (power-on). Microprocessor AlU3 E2 FP ROM Front panel ROM test failed (power-on ROM AlU4 or address latches AlU8 and *TST?).
Troubleshooting Charts Figure 3-1 gives overall troubleshooting procedures to isolate the fault to a circuit board or particular circuit (see Figure 3-20 for the location of the circuit boards). These procedures include the use of power-on selftest (Table 3-2) and signature analysis techniques (Table 3-5 through Table 3-7).
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Figure 3-3. OV Will Not Fire Troubleshooting 40 Troubleshooting Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 3-4. OV At Turn-On Troubleshooting Troubleshooting 41 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 3-5. Output Held Low Troubleshooting (Sheet 1 of 2) 42 Troubleshooting Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 3-5. Output Held Low Troubleshooting (Sheet 2 of 2) Troubleshooting 43 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 3-6. Output Held High Troubleshooting 44 Troubleshooting Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
CV/CC Status Annunciators Troubleshooting When troubleshooting the CV/CC status annunciators or status readback circuits, first measure the voltage drop across the gating diodes, which are Al0D651 for the CC circuit and Al0D652 for the CV circuit (see A10, Sheet 2). A conducting diode indicates an active (ON) control circuit.
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Table 3-4. FET Troubleshooting Chart (continued) Procedure Result Dynamic Troubleshooting Turn off the power supply and remove the A3 FET Board with its heat sink See "Disassembly Procedures" assembly. Short the collectors of Q251 and Q253 or Q351 and Q353 by connecting the collector (case) of each transistor to common ( E507) .
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Figure 3-13. A3 FET Board Test Waveforms Troubleshooting 55 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
For a typical Model 6681A, the controller will return a string with four comma-separated fields, as follows: "Keysight Technologies ,6681A,O,fA.01.05sA.01.04pA.0l.02" The first three fields in the string are the manufacturer, model number and 0. The last field gives the firmware information as follows: f= front panel firmware revision (A.01.05).
Test Headers The power supply has two test headers as shown in Figure 3-15, each with a jumper that can be moved to different positions for SA testing and for other functions. To gain access to the headers, remove the power supply top cover. Pins Description Primary Interface Test Connector A2J106 (Systems Supplies Only)
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Table 3-5. Primary Interface SA Test Description: These signatures check some primary interface circuits on the Systems Supply A2 GPIB Board. Valid A2U106 ROM Firmware Revision: A.01.06 Test Setup: See Figure 3-17. Turn off the power supply and remove the top cover. Connect SA jumper of connector J106 on A2 GPIB Board (see Figure 3-15).
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Figure 3-16. Signature Analysis Connections, (Sheet 2 of 2) Table 3-6. Front Panel SA Test Description: These signatures check front panel microprocessor AlU3. Valid A1U4 ROM Firmware Revision: A.01.07 Test Setup: See Figure 3-17. .Turn off the power supply and remove the top cover. To gain access to A1 Front Panel Board, perform steps 1 and 2 of the disassembly procedure for A1 Front Panel Assembly (see "Disassembly Procedures").
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Table 3-7. Secondary Interface SA Test Description: These signatures check the secondary microprocessor A5U504. Valid A5U504 ROM Firmware Revision: A.01.04 Test Setup: See Figure 3-17. Turn off the power supply and remove the top cover. To obtain a setup that allows access to components and test points on the A5 Control Board, follow the procedure given in Table 3-3 under "A5 Control Board Setup".
Post-Repair Calibration When Required Calibration is required annually and also whenever certain components are replaced. If components in any of the circuits listed below are replaced, the supply must be recalibrated. Note For calibration procedures, see Appendix A of the Operating Manual. Location Component A10 Control Board...
EEPROM Initialization EEPROM AlU6 on the A1 Front Panel Board stores the supply's GPIB address, model number, and constants required to program and calibrate the power supply. If either the front panel board or the EEPROM is replaced, the power supply must be reinitialized with the proper constants by running the program listed in Figure 3-18.
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! Program to initialize EPROM or move factory preset data in 668xA power supplies. RE-STORE "INIT_668X" Rev A.00.00 dated 09 Nov 1993 DIM Init_data(1:49),Model$[5],Idn$[21],Cal_data$[40] INTEGER Addr(1:49),Length(1:49) ASSIGN @Ps TO 705 ! Supply must be at address 705 CLEAR SCREEN 110 Eprom_data_addr: ! Data address DATA 2,6,10,14,18,19,20,24,28,32 DATA 36,37,38,42,46,50,54,55,56,57...
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DATA 115,30,20,1,127,.002701,.2,.00042,10.25 530 Eprom_data_6684: ! EEPROM data for 6684A DATA 93,74,41,0,83,0,29,70,131,0 DATA 98,21,4.6,10,50,0,83,255,20,10 DATA 6684,87,97,28,93,128,5,255,0,0 DATA 1296,6684,0,20,180,20,180,175,33,98 DATA 115,30,20,1,127,.002701,.2,.000333,10.234375 INPUT "Input Power Supply model number. Example:""6681A""",Model$ CLEAR SCREEN RESTORE Eprom_data_addr FOR I=1 T0 49 READ Addr(I) NEXT I RESTORE Eprom_data_len FOR I=1 T0 49 READ Length(I) NEXT I...
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1020 GOSUB Ps_error ! Error if passcode is not "0"! 1030 IF Err THEN 1040 OUTPUT @Ps;"*IDN?" ! Get data from model # location 1050 ENTER @Ps;Idn$ 1060 Model=VAL(Idn$[POS(Idn$,",")+1] ) 1070 ELSE 1080 GOTO Start 1090 END IF 1100 1110 OUTPUT @Ps;"CAL:STATE ON,";Model ! Turn on cal mode, passcode = 1120...
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1530 CLEAR SCREEN 1540 PRINT "This program should ONLY be completed if your power supply" 1550 PRINT "EEPROM has been replaced or a component that will effect" 1560 PRINT "the calibration AND the alignment of voltage, overvoltage" 1570 PRINT "and current is complete AND unit has passed the performance" 1580 PRINT "test.
2010 IF Err THEN 2020 PRINT "An error occurred during the EEPROM read/write, Check for" 2030 PRINT "programming errors. Initialization data may be incorrect." 2040 STOP 2050 END IF 2060 2070 PRINT "Operation complete. Program stopped." 2080 STOP 2090 2100 Ps_error: ! Error handling subroutine 2110 OUTPUT @Ps;"SYST:ERR?"...
Top Cover Remove the four screws that secure the carrying straps (two TORX 20 screws on each side). These same screws secure the cover to the chassis. Spread the bottom rear of the cover, and then pull the cover backwards towards the rear of the power supply to disengage it from the front panel.
A4 AC Input Assembly To remove the A4 AC Input Board first remove the GPIB board then disconnect these cables from the following connectors at the GPIB board: Disconnect the cables going to connector J417 and J420. Disconnect the cable going to connector J419. Remove the three (3) fuse assemblies inside rear of power supply to free the wires going to E400, E401, and E402 on the AC Input Board.
A10 Control Assembly Disconnect the cables from the following connectors at the A10 DC RAIL board: Disconnect the ribbon cable going from to the A6 Bias board. This cable connects to J509 on the A10 board but it is easier to disconnect it at the A6 Bias Board. Disconnect cables from connector J507 (phone) and connectors J510, J511, J512, and J513 on the A10 Control Board.
A1DSP1 LCD Display Remove the A1 Front Panel Board as described in that procedure. Remove the nuts securing the LCD display to the front panel assembly and remove the LCD and attached ribbon cable (see CAUTION below). (When reinstalling this cable, be sure to line up the cable stripe over the LCD connector pin marked with a square.) The display connector is fragile.
Principles Of Operation Introduction Figure 4-3 (at the end of this chapter) is a block diagram showing the major circuits within the power supply. The power supply consists of the following circuits: A1 Front Panel Board ckts. A2 GPIB ckts. ...
A digital control interface on the A2 GPIB Board provides the following power supply functions: Relay link. Digital 1/0. Remote inhibit (INH). Discrete fault indicator (FLT). An optical isolator IC (U113) isolates the FLT output signal common from the external fault circuit common. The desired digital interface function is selected by placing a jumper in a header (J106) on the A2 GPIB Board.
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The Secondary Microprocessor translates serial data received from the A2 board into parallel 12 bit data. The data bus is connected directly to the four DAC/OpAmp circuits. Under control of the lip the selected DAC converts the bus data into an analog signal.
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any value of load impedance. Switching between CV and CC is done automatically by the CV/CC control circuits at a value of load impedance equal to the ratio of the programmed voltage value to the programmed current value. A low-level CV or CC signal is generated by the applicable status comparator (P/O U502) and returned to the secondary processor to indicate that the corresponding mode, CV or CC, is in effect.
A4 AC Input Board The A4 Input Board contains the Inrush-Current Limit relay (K401), Main Power Relay (K402), and current-limiting resistors (R407, R408). On power-on, the current-limit relay (K401) closes allowing the dc rail capacitors to charge under a controlled condition. This applies ac voltage to the A6 Bias Board. After the turn-on initialization period (approximately 10 seconds), the main relay (K402) closes, shorting out the current-limit resistor.
Figure 4-2. 1ST Stage of the FET H-Bridge Configuration Output Circuits The output circuits include the following circuits: Chassis mounted components. Two power transformers, T900/T901. Two inductors, L900/L901. Four rectifiers, D900 through D903. Output capacitors. ...
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Figure 4-3. Keysight Series 668xA Power Supply, Block Diagram Principles Of Operation 87 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Replaceable Parts INTRODUCTION Chapter Organization This section lists the replaceable electrical and mechanical parts for the Keysight 668xA series power supplies. (Component location diagrams are located in Chapter 6.) The lists consist of tables organized by assemblies as follows: Assembly Main chassis * Table 5-3 A1 Front Panel EBoard...
How to Order Parts You can order parts from your local Keysight Technologies Sales and Support Office (see the list of offices in the back of this manual). When ordering a part, please include the following information: the Keysight part number ...
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Table 5-3. Main Chassis, Replaceable Parts Ref. Desig. Keysight Part No. Description C907 6680A 0180-4516 CAP 33000uF 7.5V 6681A 0180-4532 CAP 22000uF 16V 6682A 0180-4615 CAP 18000uF 28V 6683A 0180-4596 CAP 13000uF 45V 6684A 0180-4597 CAP 7.200uF 55V C920, 921,922,923,924,925 6682A, 6683A, 6684A 0160-4183 CAP 1000pF 250V...
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Table 5-3. Main Chassis, Replaceable Parts (continued) Ref. Desig. Keysight Part No. Description 2110-0910 FUSE (see 5060-3513 ) 2110-0911 FUSE (see 5060-3512 ) 3160-0419 FAN FINGER GUARD 3160-0571 FAN-TUBEAXIAL 5001-0538 TRIM-SIDES 5001-0539 TRIM SIDES,FRENCH GRAY 5001-6776 CHASSIS, BASE 5001-6778 PANEL, REAR 5001-6779 COVER-OUTSIDE 5001-6780...
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Table 5-7. A3 FET Assembly, Replaceable Parts (continued) Ref. Desig. Keysight Part No. Description C244, 245 0160-6806 CAP .luF 400V C248 0160-4832 CAP .0luF 10% C258 0180-4132 CAP 6.8uF 35V C301 0160-7505 7uF+ - 5% 200V C302 0180-4132 CAP 6.8uF 35V C303 0160-4835 CAP .luF 10% 50V...
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Table 5-7. A3 FET Assembly, Replaceable Parts (continued) Ref. Desig. Keysight Part No. Description Q301, 302, 303, 304 1855-0859 MOSFET 500V 20A Q311, 322, 333, 344 1855-0859 MOSFET 500V 20A Q351, 352, 353, 354 1853-0363 D45H5/D45H8/363 R201 0811-3903 RES 150 Ohm 5W NI R202 0699-0208 RES 1 5% .25W CF...
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Table 5-7. A3 FET Assembly, Replaceable Parts (continued) Ref. Desig. Keysight Part No. Description R271 0757-0200 RES 5.62K 1% R272 0757-0442 RES l0K 1% .125W R273, 274, 275 0757-0437 RES 4.75K 1% R277 0698-3633 RES 3905% 2W MO R301 0811-3903 RES 150Ohm 5W NI R302 0699-0208...
Diagrams Introduction This chapter contains drawings and diagrams for troubleshooting and maintaining Keysight Series 668xA Power Supplies. Unless otherwise specified, a drawing or diagram applies to all models of the series. Wiring connections to external equipment are shown in the Power Supply Operating Manual. Chapter Organization Table 6-1 summarizes the contents of this chapter.
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Table 6-2. Signal Name Mnemonics Mnemonic Description Mnemonic Description A(0)--A(15) MSRQ Address lines Microprocessor service request AD (O)--AD(7) NDAC Address bus Not data accepted (GPIB) AMB_SENSE NEG_IMON Ambient temperature sense Negative current monitor ANA(0)--ANA(7) NRFD Analog Signal readback bus Not ready or data (GPIB) Attention (GPIB) Overvoltage BIAS_OK...
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Table 6-3. Test Points TEST POINT No. & Loc. Signal Tested Measurement and Conditions A2 GPIB BOARD Primary/chassis ground Connect meter or scope common here. Then J106-4 make measurements at test points through + 5V primary bias + 5V + 0.2V U101- 1 PCLR Goes high for approximately 40 ms at power on,...
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Table 6-3. Test Points (continued) TEST POINT No. & Loc. Signal Tested Measurement and Conditions Bias Board (continued) PREF +2.5V U308-1 RESET* Held low for approximately 50 ms at power-on, U308-5 then goes high. FAN DETECT U311-7 -25V D317 FAN_PWN +0.6V U311-2 A3 FET Board...
Table 6-3. Test Points (continued) TEST POINT No. & Loc. Signal Tested Measurement and Conditions A10 Control Board (continued) DIVIDER CLOCK (Sheet 3) See Figure 6-1 U600-10 DIVIDER RESET (Sheet 3) See Figure 6-1 U601-6 ON LATCH CLOCK (Sheet 3) See Figure 6-1 U601-3 ON LATCH (Sheet 3)
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Figure 6-1. Test Point Waveforms for Table 6-3 120 Diagrams Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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NOTE: This LED Board is only used on earlier version Keysight 668xA models. Refer to Appendix A Backdating, change 10 for more information. Figure 6-5. LED Board, Component and Test Point Location Figure 6-6. LED Board, Schematic Diagram Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-9. A3 FET Board, Component and Test Point Location Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-10. A3 FET Board, Schematic Diagram (sheet 1 of 2) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-10. A3 FET Board, Schematic Diagram (sheet 2 of 2) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-11. A4 AC Input Board, Component and Test Point Location Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figur e 6-25. A10 Contr ol Board, Compone nt and Test Point Loc ation Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-26. A10 Control Board, Schematic Diagram (Sheet 1 of 4) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-26. A10 Control Board, Schematic Diagram (Sheet 2 of 4) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-26. A10 Control Board, Schematic Diagram (Sheet 3 of 4) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Figure 6-26. A10 Control Board, Schematic Diagram (Sheet 4 of 4) Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
Backdating Manual backdating describes changes that must be made to this manual for power supplies whose serial numbers are lower than those listed in the title page to this manual. Look in the following table and locate your Keysight model. Then look at each serial number listed for this group. If the serial number of your power supply is prior to any of the serial number(s) listed, perform the change indicated in the Change column.
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Change 3 Change 10 continued In Table 5-14 A10 Control Board In Table 5-10 A6 Bias Assembly DELETE C548, 0.1uF 50V P/N 0160-4835 in parallel DELETE R830, ZERO OHMS, P/N 8159-0005. with RT500. D830 DIODE IN4150, P/N 1901-1098 RT500, P/N 0837-0412. Pins, P/N 0360-1498, qty.
Index A1 Front Panel Board, test header ..........................57 A2 GPIB Board, test header ............................57 A3 FET Board dynamic troubleshooting ............................55 static troubleshooting............................55 test connections ..............................55 test points ................................ 55, 56 analog port ..................................8 bias supply ................................... 36 cable W3 ribbon ................................
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CV transient response waveform ..........................18 CV transient recovery time, defined ..........................18 CV transient recovery time, testing ..........................18 CV voltage programming and readback accuracy, testing................... 16 Diagram cabling ................................ 146 DIG CNTL port, configuring ............................58 disassembly procedures ............................... 71 downprogrammer FETs, location of ..........................
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errors calibration ................................35 selftest ................................... 35 ESD ..................................9, 33 factory calibration constants ............................65 firmware, revisions ................................ 8 firmware revisions ............................... 64 Form, performance test record ............................. 25 front panel EEPROM factory cal location ............................... 67 initialization of ..............................67 transferring constants to ............................
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Mnemonics signal names ............................140 mutual coupling, test lead ............................14 noise, testing ................................14 operating manual ................................7 oscilloscope, Keysight 54504A ........................... 15 output heatsink assembly ............................. 82 output rectifiers location of ................................75 replacing ................................75 overvoltage, maximum programmable ........................14 Performance test record form ............................
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load ..................................12 resistor, current monitor .............................. 12 resistor, current monitoring ............................12 SA ....................................58 SA secondary interface, exiting test ..........................58 SA signals A5 microprocessor..............................59 SA signals, secondary interface ........................... 59 SA signatures, identical ............................... 60 SA signatures, similar ..............................60 SA test header jumper ..............................
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Troubleshooting test points ................................142 troubleshooting chart output held high ..............................36 OV at turn-on................................ 36 secondary downprogramming ..........................36 troubleshooting charts ..............................36 *TST? ................................... 34 *TST? Query ................................ 34 UNREGULATED annunciator ............................ 55 using *IDN query ................................8 voltage, maximum programmable ..........................
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For instruments with serial numbers: Keysight 6680A: SG41000110 and above Keysight 6681A: MY41000114 and above Keysight 6682A: MY41000106 and above Keysight 6683A: MY41000109 and above Keysight 6684A: MY41000115 and above For manual updates, a change page may be included. For instruments with lower serial numbers, or instruments with the older two-part serial number format, see Appendix A.
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