E1446A Summing Amplifier/DAC Module Service Manual
Contents
1. You have only those rights provided for such Software and Documentation by the applicable FAR or DFARS clause or the Agilent standard software agreement for the product involved Agilent E1446A Summing Amplifier DAC Module Service Manual Edition 1 Rev 2 Copyright 1993 2006 Agilent Technologies Inc All Rights Reserved Printing History The Printing History shown below lists all Editions and Updates of this manual and the printing date s The first printing of the manual is Edition 1 The Edition number increments by 1 whenever the manual is revised Updates which are issued between Editions contain replacement pages to correct the current Edition of the manual Updates are numbered sequentially starting with Update 1 When a new Edition is created it contains all the Update information for the previous Edition Each new Edition or Update also includes a revised copy of this printing history page Many product updates or revisions do not require manual changes and conversely manual corrections may be done without accompanying product changes Therefore do not expect a one to one correspondence between product updates and manual updates Edition 1 Part Number El446 90010 oooooooooo ooo o January 1993 Edition 1 Rev 2 Part Number E1446 90010 o o oooo oo o oo July 2006 Safety Symbols Instruction manual symbol affixed to product Indicates that the user must refer to the man A Alternating current AC ual for2. ASSEMBLIES E1446A NEW E1446A EXCHANGE PRINTED CIRCUIT ASSEMBLY LED LAMP LUM INT 3MCD IF 20MA MAX BVR 5V GRN LENS LED LAMP LUM INT 3MCD IF 20MA MAX BVR 5V GRN LENS FUSE SUBMINIATURE 1A 125V NTD AX UL CSA CONNECTOR RF BNC RCPT PC W STDFS 50 OHM CONNECTOR RF BNC RCPT PC W STDFS 50 OHM CONNECTOR RF BNC RCPT PC W STDFS 50 OHM CONNECTOR POST TYPE 2 54 PIN SPCG 96 CONTACT SWITCH DIP ROCKER 8 1A 0 15A 30VDC HARDWARE AND MISCELLANEOUS PARTS WASHER FL 7 16 IN 5 IN ID 75 IN OD EXT HANDLE KIT BOTTOM EXT HANDLE KIT TOP NUT HEX DBL CHAM 1 2 28 THD 125 IN THK RFI STRIP FINGERS BE CU TIN PLATED FRONT COVER SCREW PH M2 5 X 11TX SCREW MACHINE M2 5 X 0 45 12MM LG PAN HD SCREW MACHINE M2 5 X 0 45 6MM LG FLAT HD SCREW MACHINE M3 X 0 5 25MM LG FLAT HD TOP SHIELD BOTTOM SHIELD E1446A MANUAL KIT INSTALLATION NOTE DRIVER DOWNLOAD INSTR DRIVER LIF 3 5 INSTR DRIVER DOS 3 5 AMPLIFIER DAC SUMMING USER S MANUAL E1446 66201 E1446 69201 E1446 66501 HLMP 5050 HLMP 5050 R251001T1 227677 1 227677 1 227677 1 DIN 96CPC SRI TR 76YY22968S 5710 94 16 E1400 84105 E1400 84106 2950 0054 00786 185 E1446 00201 0515 1968 0515 0368 343 300 02506 0515 1135 E1446 00601 E1446 00602 E1446 60000 E1400 90021 E1446 10031 E1446 10032 E1446 90001 3 2 Replaceable Parts Table 3 2 Agilent E1446A Reference Designators Agilent E1446A Reference Designators assembly hardware electric
3. be made inoperative and be secured against any unintended operation 1 2 General Information WARNING CAUTION REMOVE POWER IF POSSIBLE Some procedures in this manual may be performed with power supplied to the mainframe while protective covers are removed Energy available at many points may if contacted result in personal injury If maintenance can be performed without power applied the power should be removed USING AUTOTRANSFORMERS If the mainframe is to be energized via an autotransformer for voltage reduction make sure the common terminal is connected to neutral that is the grounded side of the main s supply CAPACITOR VOLTAGES Capacitors inside the mainframe may remain charged even when the mainframe has been disconnected from its source of supply USE PROPER FUSES For continued protection against fire hazard replace the line fuses only with fuses of the same current rating and type such as normal blow time delay etc Do not use repaired fuses or short circuited fuseholders Static electricity is a major cause of component failure To prevent damage to the electrical components in the amplifier observe anti static techniques whenever working on the amplifier General Information 1 3 Inspection Shipping This section describes initial incoming inspection and shipping guidelines for the amplifier Initial Use the steps in Figure 1 2 as guidelines to perform initial inspection of Inspe
4. instructions before operation or service Refer to the WARNINGS page page iii in this manual for a summary of safety information Safety information for preventive maintenance testing and service follows and is also found throughout this manual This section contains WARNINGS which must be followed for your protection and CAUTIONS which must be followed to avoid damage to the equipment when performing instrument maintenance or repair SERVICE TRAINED PERSONNEL ONLY The information in this manual is for service trained personnel who are familiar with electronic circuitry and are aware of the hazards involved To avoid personal injury or damage to the instrument do not perform procedures in this manual or do any servicing unless you are qualified to do so CHECK MAINFRAME POWER SETTINGS Before applying power verify that the mainframe setting matches the line voltage and that the correct fuse is installed An uninterruptible safety earth ground must be provided from the main power source to the supplied power cord set GROUNDING REQUIREMENTS Interruption of the protective grounding conductor inside or outside the mainframe or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury Grounding one conductor of a two conductor outlet is not sufficient protection IMPAIRED PROTECTION Whenever it is likely that instrument protection has been impaired the mainframe must
5. specific WARNING or CAUTION information to avoid personal injury or dam age to the product Direct current DC AN Indicates hazardous voltages Indicates the field wiring terminal that must _ be connected to earth ground before operating the equipment protects against electrical Calls attention to a procedure practice or con shock in case of fault WARNING dition that could cause bodily injury or death i i Calls attention to a procedure practice or con or _ __ Frame or chassis ground terminal typically CAUTION dition that could possibly cause damage to connects to the equipment s metal frame equipment or permanent loss of data WARNINGS The following general safety precautions must be observed during all phases of operation service and repair of this product 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 product Agilent Technologies assumes no liability for the customer s failure to comply with these requirements Ground the equipment For Safety Class 1 equipment equipment having a protective earth terminal an uninterruptible safety earth ground must be provided from the mains power source to the product input wiring terminals or supplied power cable DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes For continued protection ag
6. test procedure includes an example program that performs the test All example programs assume the following configuration e Controller is an HP 9000 Series 200 300 computer e Programming language is BASIC e Amplifier address is 70911 logical address is 88 e Amplifier Commander is an Agilent E1405 E 1406 e DMM isan Agilent 3458A at address 722 The procedures and examples in this chapter assume that the amplifier is configured as a stand alone instrument 1 e it is not a servant of an Agilent E1445A Arbitrary Function Generator To use an Agilent E1445A as the commander make sure that the amplifier is placed in the servant area of the E1445A then send all commmands to the E1445A address see the A gilent E1446A User s Manual for more information The procedures and examples in this chapter can be modified to work with an E1445A as the Commander by changing the following keywords as shown and sending all commands to the E1445A Agilent E1446A Commands Agilent E1405 E1406 Commander Agilent E1445A Commander INPut 1 ATTenuation IMPedance INPut2 ATTenuation IMPedance OUTPut1 ATTenuation IMPedance OVERIoad STATe ACTual OUTPut2 IMPedance OUTPut3 IMPedance SOURce VOLTage LEVel MMediate OFFSet INPut 1 ATTenuation IMPedance INPut2 ATTenuation IMPedance OUTPut2 ATTenuation IMPedance OVERIoad STATe ACTual OUTPut3 IMPedance OUTPut4 IMPedance
7. 4 Connect the Spectrum Analyzer 50 Q input to the amplifier output specified in Table 2 3 see Figure 2 6 2 22 Verification Tests NOTE Set the Spectrum Analyzer as follows Resolution bandwidth 30 Hz Video bandwidth 100 Hz Sweep mode Manual Manual frequency 100 Hz Note the amplitude reading at 100 Hz This value will be used as the reference level in step 8 Set the Spectrum Analyzer as follows e Resolution bandwidth 10 kHz e Video bandwidth 10 kHz e Sweep mode Continuous Starting from 100 Hz move the marker to the right until the amplitude reading is 3 dB below the reference level found in step 6 The amplifier bandwidth is equal to the marker frequency at this point Record the result in Table 2 4 If the maximum frequency of the Spectrum Analyzer is reached before the 3 dB frequency record the result as gt Fmax where Fmax is the maximum frequency of the Spectrum Analyzer If the Spectrum Analyzer is an Agilent 3585A for example the result should be written as gt 40E6 Connect tracking generator to Table 2 3 Bandwidth Test Points Connect Spectrum Spectrum Analyzer Analyzer input to Range Input Inputt Inputt Input2 Input2 Input2 Main 15 dB Diff 5 dB Diff 5 dB Main 15dB Diff 5 dB Diff 5 dB Verification Tests 2 23 Example Program RE STORE BANDWIDTH DIM Output 1 3 10 Set up I O paths ASSIGN OAmp TO 70911 Initialize vari
8. Agilent 75000 SERIES C Agilent E1446A Summing Amplifier DAC Module Service Manual oh Agilent Technologies Copyright Agilent Technologies Inc 1993 2006 E1446 90010 Manual Part Number E1446 90010 Printed July 2006 Edition 2 Rev 2 E0706 Printed in Malaysia E0706 Certification Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology formerly National Bureau of Standards to the extent allowed by that organization s calibration facility and to the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies product is warranted against defects in materials and workmanship for a period of one 1 year from date of shipment Duration and conditions of warranty for this product may be superseded when the product is integrated into becomes a part of other Agilent products During the warranty period Agilent Technologies will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a service facility designated by Agilent Technologies Buyer shall prepay shipping charges to A
9. Amplifier Description 0 o Amplifier Specifications Amplifier Serial Numbers Recommended Test Equipment Chapter 2 Verification Tests Introduction Test Conditions Procedures o Performance Test Record Verification Test Examples Using an Agilent E1445A as the Commander Functional Verification o o Operation Verification 0 Performance Verification o Test 2 1 Input Attenuator Test o Test 2 2 Output Attenuator Test Test 2 3 Low level Outputs Test Test 2 4 Main Output Test o Test 2 5 Offset DAC Test o o ee ee Test 2 6 Bandwidth Test o Performance Test Record o e Amplifier Test Limits o oo Measurement Uncertainty o o eee Test Accuracy Ratio TAR o eee eee Chapter 3 Replaceable Parts INTFOdUCUIONT Ad e A AR AAA e ot ee es A 3 1 Exchange Assemblies 0 o e 3 1 Ordering Information o e e e 3 1 Replaceable Parts List 0 o o ee 3 1 Chapter 4 Service INTOQUCUON 6 4 4 4 5 a e ee a Be a 4 1 Eq
10. BLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CON TRACT TORT OR ANY OTHER LEGAL THEORY Notice The information contained in this document is subject to change without notice Agilent Technologies MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Agilent shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material This document contains proprietary information which is protected by copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Agilent Technologies Inc Agilent assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Agilent U S Government Restricted Rights The Software and Documentation have been developed entirely at private expense They are delivered and licensed as commercial computer software as defined in DFARS 252 227 7013 Oct 1988 DFARS 252 211 7015 May 1991 or DFARS 252 227 7014 Jun 1995 as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 Jun 1987 or any equivalent agency regulation or contract clause whichever is applicable
11. Expected Output VDC Diff Inputt 0 5 Diff Input 0 75 Diff Input 0 75 Diff Input2 0 5 Diff Input1 0 5 Diff Inputt 0 75 Diff Inputt 0 75 Diff Input2 0 5 Example Program RE STORE LL_OUT DIM Nominal 1 4 Input 1 4 10 Set up I O path ASSIGN Amp TO 70911 ASSIGN Dmm TO 722 Initialize variables Gain 2 0 RESTORE Data_nominal READ Nominal RESTORE Data_input READ Input Set up DMM and source OUTPUT Dmm PRESET NORM DCV RANGE 10 Set up amplifier OUTPUT Amp RST CLS Reset amplifier WAIT 5 Perform test FOR J 1 TO 2 IF J 1 THEN Output DIFF ELSE Output DIFF Continued on next page 2 14 Verification Tests 300 END IF 310 320 DISP Connect DMM to amp Output amp then press Continue 330 PAUSE 340 DISP 350 PRINT TAB 23 Output 360 PRINT 370 PRINT USING 5A 6X 9A 4X 11A 4X 11A Input Input V Nominal V Reading V 380 PRINT 390 FOR l 1 TO 4 400 Input_v Nominal l Gain 1 Output DIFF 410 Test connections 420 IF l 1 OR l 4 THEN 430 DISP Connect Source to amp Input l amp then press Continue 440 PAUSE 450 END IF 460 DISP 470 GOSUB Measure 480 PRINT USING 6A 6X MD 3D 8X MD 3D 9X MD 5D Input I Input_v Nominal l Rdg 490 NEXT 500 PRINT 510 PRINT 520 NEXTJ 530 Quit 540 ASSIGN Amp TO 550 ASSIGN Dmm TO 560 STOP 570 Measure 580 SET SOURCE 590 DISP Set So
12. SOURce2 VOLTage LEVel IMMediate OFFSet 2 2 Verification Tests Functional Verification The purpose of this test is to verify communication with the mainframe or command module No attempt is made to verify that the amplifier is meeting specifications Functional Verification for the amplifier is accomplished by performing the Self Test described below Self Test Procedure 1 Remove any connections to the amplifier front panel 2 Reset the amplifier RST CLS Reset amplifier and clear status registers 3 Execute the amplifier self test TST Self test command 4 Read the result A 0 indicates that the test passed If a failure occurs the amplifier returns a 1 and generates an error message that identifies the cause of the failure Example Program 10 RE STORE SELF_TEST DIM Result 255 ASSIGN Amp TO 70911 20 30 40 50 60 70 80 90 OUTPUT Amp RST CLS Reset amplifier OUTPUT Amp TST Perform Self test ENTER Amp Result PRINT Result END Verification Tests 2 3 Operation Verification Operation Verification is a subset of the Performance Verification tests that follow For the amplifier Operation Verification consists of the following tests e Test 2 3 Low level Outputs Test e Test 2 4 Main Output Test e Test 2 5 Offset DAC Test Performance Verification The procedures in this section are used to test the amplifier s electrical perform
13. ables Max_freq 4 0E 7 RESTORE Data_output READ Output Set up amplifier OUTPUT Amp RST CLS Reset amplifier WAIT 5 Perform test DISP Set Analyzer Tracking Generator to 10 dBm nominal then press Continue PAUSE FOR Ch 1 TO 2 DISP Connect Analyzer Tracking Generator to INPUT amp VAL Ch amp then press Continue PAUSE DISP FOR 1 TO 3 DISP Connect amp Output l amp to Analyzer 500hm input then press Continue PAUSE DISP IF Output I MAIN THEN Range 15dBm ELSE Range 5dBm END IF PRINT Set up Analyzer PRINT PRINT Range amp Range PRINT Resolution BW 30 Hz PRINT Video BW 100 Hz Continued on next page 2 24 Verification Tests 420 PRINT Sweep Mode Manual 430 PRINT Manual Frequency 100 Hz 440 INPUT Enter amplitude at 100 Hz in dBm Ref_level 450 CLEAR SCREEN 460 470 GOSUB Meas_bw 480 PRINT Bandwidth Hz amp VAL Bandwidth 490 DISP Press Continue when ready 500 PAUSE 510 CLEAR SCREEN 520 NEXT 530 NEXT Ch 540 550 Quit 560 ASSIGN Amp TO 570 STOP 580 590 Meas_bw 600 PRINT Set up Analyzer 610 PRINT 620 PRINT Resolution BW 10 kHz 630 PRINT Video BW 10 kHz 640 PRINT Sweep Mode Continuous 650 DISP Press Continue when ready 660 PAUSE 670 CLEAR SCREEN 680 690 PRINT INPUT amp VAL Ch amp amp Output 1 amp OUTPUT 700 PRINT 710 PRINT Reference L
14. ainst fire replace the line fuse s only with fuse s of the same voltage and current rating and type DO NOT use repaired fuses or short circuited fuse holders Keep away from live circuits Operating personnel must not remove equipment covers or shields Procedures involving the removal of covers or shields are for use by service trained personnel only Under certain conditions dangerous voltages may exist even with the equipment switched off To avoid dangerous electrical shock DO NOT perform procedures involving cover or shield removal unless you are qualified to do so DO NOT operate damaged equipment Whenever it is possible that the safety protection features built into this product have been impaired either through physical damage excessive moisture or any other reason REMOVE POWER and do not use the product until safe operation can be verified by service trained personnel If necessary return the product to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained DO NOT service or adjust alone Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT substitute parts or modify equipment Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the product Return the product to an Agilent Technologies Sales and Service Offi
15. al connector jack mechanical part electrical connector plug switch Table 3 3 Agilent E1446A Code List of Manufacturers Manufacturer s Name Manufacturer s Address AMP INC ROBINSON NUGENT INC AGILENT TECHNOLOGIES CORPORATE INSTRUMENT SPECIALTIES INC PENN ENGINEERING amp MFG CORP GETTIG ENGINEERING amp MFG CO INC LITTELFUSE INC GRAYHILL INC ELCO INDUSTRIES INC SEASTROM MFG CO HARRISBURG PA US NEW ALBANY IN US PALO ALTO CA US DEL WATER GAP PA US DOYLESTOWN PA US SPRING MILLS PA US DES PLAINES IL US LA GRANGE IL US ROCKFORD IL US GLENDALE CA US Replaceable Parts 3 3 HDL2 I DW1 DW2 E HDW3 HDW4 HDW5 A1F203 A1F204 SERI aS A1F202 Y A1F201 A1CR301 y es o SA pa ATP A Y gt A a S A1F205 A1J701 Sd SCRS Q RQ F206 MP1 SCR Q scr CK se Q L amp bon Y SCR10 1S A1J901 se SCR2 SCR11 HDL1 SCR6 SCR13 E1446A F_3_1 Figure 3 1 Agilent E1446A Replaceable Parts 3 4 Replaceable Parts 4 Service Introduction WARNING Equipment Required Service Aids Repair Strategy This chapter contains service information for the Agilent E1446A amplifier including troubleshooting guidelines and repair maintenance guidelines Do not perform any of the service procedures shown unless you are a qualified service trained technician a
16. al for information on operator errors Catastrophic Failure If a catastrophic failure occurs see Testing the Assembly to troubleshoot the amplifier Performance Out of Specification If the amplifier fails any of its Performance Tests check test equipment and connections then repeat the test If the amplifier continues to fail one or more of the Performance Tests the module may need to be sent in for exchange You can use the tests and checks in Table 4 1 to isolate the problem See Figure 3 1 in Chapter 3 for locations of replaceable parts Table 4 1 Agilent E1446A Tests Checks Heat Damage Discolored PC boards Damaged insulation Evidence of arcing Amplifier Configuration A1SP301 LADDR setting factory set to 88 Amplifier PCA A1F201 A1F206 Fuse continuity A1J701 A1J702 Damaged connectors A1J901 A1J902 A1J1001 A1P1 A1P2 4 2 Service Disassembly Remove 5 nuts and washers Checking for Heat Damage Inspect the amplifier for signs of abnormal internally generated heat such as discolored printed circuit boards or components damaged insulation or evidence of arcing If there is damage do not operate the amplifier until you have corrected the problem Checking Switches Jumpers Verify that the logical address setting is set correctly factory set at 88 See the Agilent E1446A User s Manual for information Checking the Amplifier PCAs Check fuse continuity and inspect a
17. ance using the specifications in Appendix A of the A gilent El446A User s Manual as the performance standards These tests are suitable for incoming inspection troubleshooting and preventive maintenance The results of the Performance Verification tests should be recorded in the Performance Test Record Table 2 4 Performance Verification includes the following tests Test Name Input Attenuation Test Output Attenuation Test Low Level Outputs Test Main Output Test Offset DAC Test Bandwidth Test 2 4 Verification Tests Test 2 1 Input Attenuator Test Description The purpose of this test is to verify that the amplifier meets its specifications for input attenuator accuracy Equipment Setup e Set Source to DCV e Set DMM to DCV autorange e Connect the DMM to the amplifier as shown in Figure 2 1 33258 Function Generator oO 00 00000 Signo cau oo A aaneenn ONT LA ELO Bal Or i Input 2 Diff Output e TA 3458A 1 El Digital Multimeter Q Sense Input E1446A F_2_1 Figure 2 1 Input Attenuation Test Setup Test Procedure 1 Reset the amplifier RST CLS Reset amplifier and clear status registers 2 Set the amplifier Input1 attenuation INP1 ATTO 3 Connect the Source to Input1 as shown in Figure 2 1 4 Set the Source to 0 5 VDC and measure the amplif
18. ce for service and repair to ensure that safety features are maintained DECLARATION OF CONFORMITY C According to ISO IEC Guide 22 and CEN CENELEC EN 45014 Manufacturer s Name Agilent Technologies Incorporated Manufacturer s Address 815 14 St SW Loveland Colorado 80537 USA Declares that the product Product Name Summing Amplifier DAC Model Number E1446A Product Options This declaration covers all options of the above product s Conforms with the following European Directives The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC including 93 68 EEC and carries the CE Marking accordingly Conforms with the following product standards EMC Standard Limit CISPR 11 1990 EN 55011 1991 Group 1 Class A IEC 801 2 1991 EN50082 1 1992 4kV CD 8kV AD IEC 801 3 1984 EN50082 1 1992 3 V m IEC 801 4 1988 EN50082 1 1992 0 5kV signal lines 1kV power lines The produt was tested in a typical configuration with Agilent Technologies or Hewlett Packard Company test systems Safety IEC 1010 1 1990 A2 1996 EN 61010 1 1993 Canada CSA C22 2 No 1010 1 1992 UL 3111 1 3 May 2001 Date Ray Corson Product Regulations Program Manager For further information please contact your local Agilent Technologies sales office agent or distributor Authorized EU representative Agilent Technologies Deutschland GmbH Herrenberger St
19. ction the amplifier WARNING To avoid possible hazardous electrical shock do not perform electrical tests if there are signs of shipping damage to the shipping container or to the instrument INITIAL INSPECTION Check Carton Notify Agilent and carrier Keep carton for carrier inspection Notify Agilent See Series C Installation and Getting Started Cuide See Chapter 2 Verification Tests Return Module to Agilent See Shipping Guidelines Optional Deliver Module to User Figure 1 2 Initial Incoming Inspection Guidelines E1446A F_1_2 1 4 General Information Shipping Follow the steps in Figure 1 3 to return the amplifier to a Agilent Guidelines Technologies Sales and Support Office or Service Center 1 Prepare the Module ANTI STATIC e Attach tag to module that identifies owner Model Number Serial Number Service Required e Place tagged device in anti static bag 2 Package the Module e Place packaged module in shipping carton YO O E1446A F_1_3A Place 75 to 100 mm 3 to 4 inches of shock SHIPPING CARTON ADDRESS absorbing shock absorbing material around the module Seal the shipping carton securely Mark the shipping carton FRAGILE ae o Ship the Module to Agilent Technologies Place address label on shipping carton Send carton to Agilent Technologies We recommend you use the same shipping materials as SHOCK ABSORBING those us
20. ecord The three levels of test procedures described in this chapter are used to verify that the Agilent E1446A e is fully functional Functional Verification e meets selected testable specifications Operation Verification e meets all testable specifications Performance Verification Do not perform any of the following verification tests unless you are a qualified service trained technician and have read the WARNINGS and CAUTIONS in Chapter 1 See Table 1 1 for test equipment requirements You should complete the Performance Verification tests at least once a year For heavy use or severe operating environments perform the tests more often Before performing these tests allow the amplifier to warm up for at least one hour The temperature should be between 18 C and 28 C The verification tests assume that the person performing the tests understands how to operate the mainframe the amplifier and specified test equipment The test procedures do not specify equipment settings for test equipment except in general terms It is assumed that a qualified service trained technician will select and connect the cables adapters and probes required for the test The results of each Performance Verification test may be recorded in Table 2 4 Agilent E1446A Performance Test Record This form can be copied if desired Verification Tests 2 1 Verification Test Examples Using an Agilent E1445A as the Commander Each verification
21. ed in factory packaging available from Agilent MATERIAL i f on 1446A F_i_38 Technologies For other commercially available shipping materials use a double wall carton with minimum 2 4 MPa 350 psi test Figure 1 3 Packaging Shipping Guidelines General Information 1 5 Environment Environment Operating The recommended operating environment for the Agilent E1446A amplifier 1s Temperature Humidity 0 C to 55 C lt 65 relative 0 C to 40 C Storage and Shipment 40 C to 75 C lt 65 relative 0 C to 40 C Amplifier Description Amplifier Specifications Amplifier Serial Numbers The Agilent E1446A amplifier is a VXIbus C size register based instrument The amplifier can operate in a C size VXIbus mainframe using an Agilent E1405 E1406 Command Module and Standard Commands for Programmable Instruments SCPI If the amplifier address is within the Servant Area of an Agilent E1445A Arbitrary Function Generator then the amplifier can operate without a Command Module Amplifier specifications are listed in Appendix A of the Agilent E1446A User s Manual These specifications are the performance standards or limits against which the instrument may be tested Figure 1 4 shows Agilent Technologies serial number structure Amplifiers covered by this manual are identified by a serial number prefix listed on the title page Agilent Technologies Serial Numbers XXXX A YYYYY Se
22. evel dBm Ref_level 720 PRINT 730 DISP Move marker until amplitude is 3dB below the reference then press Continue 740 PAUSE 750 INPUT Enter marker frequency in Hz Bandwidth 760 RETURN 770 780 Data_output 790 DATA MAIN DIFF DIFF 800 END Verification Tests 2 25 Performance Test Record Amplifier Test Limits Measurement Uncertainty Table 2 4 Performance Test Record for the Agilent El446A Amplifier is a form you can copy and use to record performance verification test results for the amplifier Table 2 4 shows amplifier accuracy measurement uncertainty and test accuracy ratio TAR values Test limits are defined using the specifications in Appendix A of the Agilent E1446A User s Manual The specifications for Bandwidth are single sided i e there is a lower limit but no upper limit In the Performance Test Record the Maximum column will be blank for the Bandwidth Test For the performance verification tests in this manual the measurement uncertainties are based on the accuracy specifications for the following test equipment Performance Test Test Equipment Input Attenuation Agilent 3458A Output Attenuation Agilent 3458A Low Level Outputs Agilent 3325B Agilent 3458A Main Output Agilent 3325B Agilent 3458A Offset DAC Agilent 3458A Bandwidth Agilent 3585A Test Accuracy Ratio TAR Test Accuracy Ratio TAR for the Agilent E1446A
23. gilent and Agilent shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Agilent from another country Agilent warrants that its software and firmware designated by Agilent for use with a product will execute its programming instructions when properly installed on that product Agilent does not warrant that the operation of the product or software or firmware will be uninterrupted or error free Limitation Of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied products or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance The design and implementation of any circuit on this product is the sole responsibility of the Buyer Agilent does not warrant the Buyer s circuitry or malfunctions of Agilent products that result from the Buyer s circuitry In addition Agilent does not warrant any damage that occurs as a result of the Buyer s circuit or any defects that result from Buyer supplied products NO OTHER WARRANTY IS EXPRESSED OR IMPLIED Agilent SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES Agilent SHALL NOT BE LIA
24. ier output with the DMM Repeat with the Source set to 0 5 VDC Average the two readings to get a reference level Positive Reading V Negative Reading V 2 Reference Level V Verification Tests 2 5 5 Set the amplifier Input1 attenuation to 1 dB INP1 ATT 1 6 Measure a 0 5 VDC signal and a 0 5 VDC signal as in step 4 Average the two readings Positive Reading V Negative Reading V 2 Averaged Reading V 7 Calculate the attenuation using the results from steps 4 and 6 Record the result in Table 2 4 a a a 0 8 Repeat steps 5 7 for the attenuations shown below changing step 5 as specified Attenuation Step 5 Setting dB Command INP1 ATT 2 INP1 ATT 4 INP1 ATT 8 INP1 ATT 16 9 Set the amplifier Input2 attenuation INP2 ATT O 10 Connect the Source to Input2 as shown in Figure 2 1 11 Repeat steps 4 8 for Input2 changing step 5 as shown below Attenuation Step 5 Setting dB Command INP2 ATT 1 INP2 ATT 2 INP2 ATT 4 INP2 ATT 8 INP2 ATT 16 2 6 Verification Tests Example Program 10 RE STORE INPUT_ATTN 20 30 Set up I O path 40 ASSIGN Amp TO 70911 50 ASSIGN Dmm TO 722 60 70 Initialize variables 80 90 Set up DMM DISP Connect DMM to Diff Output then press Continue PAUSE CLEAR SCREEN OUTPUT Dmm PRESET NORM DCV RANGE AUTO Set up amplifier OUTPUT Amp RST CLS Reset amplifier WAIT 5 Perfo
25. ification Tests 210 Perform test 220 PRINT USING 11A 8X 11A Nominal V Reading V 230 PRINT 240 250 FORI 1TO5 260 Dac_v Nominal 1 2 0 270 GOSUB Measure 280 Result PROUND Rdg 6 290 PRINT USING 1X SDD 4D 11X SDD 5D Nominal l Result 300 NEXT 310 320 Quit 330 ASSIGN Amp TO 340 ASSIGN Dmm TO 350 STOP 360 370 Measure 380 Measure output 390 OUTPUT Amp VOLT OFFS amp VAL Dac_v 400 OUTPUT ODmm TRIG SGL 410 ENTER Dmm Rdg 420 RETURN 430 440 Data_nominal 450 DATA 20 0 10 0 0 0 10 0 19 9992 460 END Verification Tests 2 21 Test 2 6 Bandwidth Test Description The purpose of this test is to verify that the amplifier meets its bandwidth specifications Equipment Setup e Set Spectrum Analyzer s tracking generator to 10 dBm nominal 3585A SPECTRUM ANALYZER Input 1 Jaw gers THE aero COB Input 2 Tracking 500 e wae Output xv 1x1 E1446A F_2_6 Figure 2 6 Bandwidth Test Setup Test Procedure 1 Reset the amplifier RST CLS Reset amplifier and clear status registers Repeat steps 2 8 for each entry in Table 2 3 2 Connect the Spectrum Analyzer tracking generator output to the amplifier input specified in Table 2 3 see Figure 2 6 3 Set the Spectrum Analyzer range to the value specified in Table 2 3
26. is defined as Amplifier Accuracy divided by Measurement Uncertainty i e Maximum Expected Reading TARS Measurement Uncertainty For single sided measurements Test Accuracy Ratio is not defined so NA Not Applicable will appear in the TAR column For TARs that exceed 10 1 the entry is gt 10 1 2 26 Verification Tests Test Facility Name Table 2 4 Performance Test Record for the Agilent E1446A Page 1 of 4 Report No Address Date City State Customer Phone Model Tested by Ambient temperature Serial No Relative humidity C Options Line frequency Hz nominal Firmware Rev Special Notes Verification Tests 2 27 Table 2 4 Performance Test Record for the Agilent E1446A Page 2 of 4 Model Report No Date Test Equipment Used Description Model No Trace No Cal Due Date 2 28 Verification Tests Table 2 4 Performance Test Record for the Agilent E1446A Page 3 of 4 Model Report No Date Test Measured Description Minimum Reading Maximum Test 2 1 Input Attenuator Test Values in dB Inputt 1 dB attenuator 2 dB attenuator 4 dB attenuator 8 dB attenuator 16 dB attenuator Input2 1 dB attenuator 2 dB attenuator 2 1 4 dB attenuator 4 1 8 dB attenua
27. ll connectors for bent pins or damaged contacts Use the following procedure to disassemble the amplifier see Figure 4 1 1 Remove the seven T10 Torx screws on the right side panel 2 Remove the nuts and washers from the front panel BNC s 3 Remove the front panel handles Remove 2 screws using T 8 TORX driver Remove 7 screws using T10 TORX driver E1446A F_4_1 Remove bottom handle Figure 4 1 Agilent E1446A Disassembly Service 4 3 Repair Maintenance Guidelines ESD Precautions Soldering Printed Circuit Boards Post Repair Safety Checks This section provides guidelines for repairing and maintaining the Agilent E1446A amplifier including e ESD precautions e Soldering printed circuit boards e Post repair safety checks Electrostatic discharge ESD may damage static sensitive devices in the Agilent E1446A amplifier This damage can range from slight parameter degradation to catastrophic failure When handling amplifier assemblies follow these guidelines to avoid damaging amplifier components e Always use a static free work station with a pad of conductive rubber or similar material when handling amplifier components e Ifa device requires soldering be sure the assembly is placed on a pad of conductive material Also be sure that you the pad and the soldering iron tip are grounded to the assembly When soldering to any circuit board keep in mind the following g
28. nd have read the WARNINGS and CAUTIONS in Chapter 1 Equipment required for amplifier troubleshooting and repair is listed in Table 1 1 Recommended Test Equipment Any equipment that satisfies the requirements given in the table may be substituted To avoid damage to the screw head slots use T8 and T10 Torx drivers as described in the disassembly instructions later in this chapter See Chapter 3 for descriptions and locations of Agilent E1446A replaceable parts Service notes and service literature for the amplifier may be available through Agilent Technologies For information contact your nearest Agilent Technologies Sales and Support Office A list of Sales and Support Offices can be found at the end of this manual If an amplifier problem cannot be isolated to one or more of the parts listed in Table 3 1 order an exchange assembly part number E1446 90010 The defective assembly must be returned for credit Service 4 1 Troubleshooting To troubleshoot an Agilent E1446A problem you should first identify Techniques Identifying the Problem Testing the Assembly Test Check Reference Designator the problem and then isolate the cause to a replaceable part Amplifier problems can be divided into three general categories e Operator errors e Catastrophic failures e Performance out of specification Operator Errors Apparent failures may result from operator errors See Appendix B in the A gilent E1446A User s Manu
29. odule includes information and procedures for functional verification operation verification performance verification adjustment troubleshooting and repair What s in this Manual Manual Overview This manual shows how to service the Agilent E1446A Summing Amplifier DAC See the Agilent E1446A User s Manual for additional information on installing configuring and operating the instrument Consult the appropriate mainframe manual for information on configuring and operating the mainframe Manual Content Chap Title Content 1 General Lists basic instrument descriptions tools and test equipment required for Information service and procedures to inspect and ship the instrument 2 Verification Describes functional verification operation verification and performance Tests verification tests for the instrument 3 Replaceable Lists part numbers of replaceable parts for the instrument Also includes Parts information to order spare parts and to exchange replace instruments 4 Service Procedures to aid in fault isolation and repair of the instrument vi Contents Chapter 1 General Information IO AUCTION ana Be a oe EE ep ee i Safety Considerations 00 0002 eee Warnings and Cautions 0045 Inspection Shipping o o o Initial Inspection o o o Shipping Guidelines Environment sis 3p es a a a bs Dabs
30. ominal 1 2 30 40 Set up I O path 50 ASSIGN Amp TO 70911 60 ASSIGN Dmm TO 722 70 80 Initialize variables 90 Gain 20 0 RESTORE Data_nominal READ Nominal Set up DMM and Source OUTPUT Dmm PRESET NORM DCV RANGE AUTO WAIT 5 DISP Connect DMM to Main Output of amplifier then press Continue PAUSE CLEAR SCREEN Set up amplifier OUTPUT Amp RST CLS Reset amplifier WAIT 5 Perform test FOR Ch 1 TO 2 DISP Connect Source to Input amp VAL Ch amp then press Continue PAUSE DISP PRINT TAB 17 INPUT amp VAL Ch PRINT PRINT USING 9A 5X 11A 4X 11A Input V Nominal V Reading V PRINT FOR l 1 TO 2 Input_v Nominal I Gain Continued on next page Verification Tests 2 17 380 GOSUB Measure 390 PRINT USING 1X SD 3D 9X SDD 3D 7X SDD 5D Input_v Nominal I Rdg 400 NEXT 410 PRINT 420 PRINT 430 NEXT Ch 440 450 Quit 460 ASSIGN Amp TO 470 ASSIGN Dmm TO 480 STOP 490 500 Measure 510 Set Source 520 DISP Set Source to amp VAL Input_v amp VDC then press Continue 530 PAUSE 540 DISP 550 560 Measure output 570 OUTPUT Dmm TRIG SGL 580 ENTER Dmm Rdg 590 Rdg PROUND Radg 5 600 RETURN 610 620 Data_nominal 630 DATA 20 0 20 0 640 END 2 18 Verification Tests Test 2 5 Offset DAC Test Description The purpose of this test is to verify that the amplifier meets its offset DAC accuracy specificati
31. ons Equipment Setup e Set DMM to DCV autorange e Connect the DMM to the amplifier as shown in Figure 2 5 3458A Digital Multimeter Input Main Output reco MAINT A ER A E1446A F_2_5 Figure 2 5 Offset DAC Test Setup Test Procedure 1 Reset the amplifier RST CLS Reset amplifier and clear status registers Repeat steps 2 and 3 for each entry in Table 2 2 2 Set the amplifier offset voltage VOLT OFFS lt offset voltage gt where lt offset voltage gt is the value specified in Table 2 2 3 Measure the amplifier output with the DMM and record the result in Table 2 4 Verification Tests 2 19 NOTE Because the DMM is a high impedance load the reading should be equal to twice the amplifier s offset voltage setting Table 2 2 Offset DAC Test Points Offset Voltage Expected reading VDC VDC 10 0 20 0 5 0 10 0 0 0 0 0 5 0 10 0 9 9996 19 9992 Example Program 10 RE STORE OFFSET DAC 20 DIM Nominal 1 5 30 40 Set up I O path 50 ASSIGN Amp TO 70911 60 ASSIGN Dmm TO 722 70 80 Initialize variables 90 READ Nominal Set up DMM OUTPUT Dmm PRESET NORM DCV RANGE AUTO DISP Connect DMM to Main Output then press Continue PAUSE CLEAR SCREEN Set up amplifier OUTPUT Amp RST CLS Reset amplifier WAIT 5 Continued on next page 2 20 Ver
32. p VAL Vin amp VDC then press Continue 640 PAUSE 650 DISP 660 OUTPUT ODmm TRIG SGL 670 ENTER Dmm Neg_rdg 680 RETURN 690 700 END 2 12 Verification Tests Test 2 3 Low level Outputs Test Description The purpose of this test is to verify that the amplifier meets its accuracy specifications for low level differential outputs Equipment Setup e Set Source to DCV e Set DMM to DCV 10 V range 3325B Function Generator npu tlez E Input 2 fia Diff Output 3458A EN AS UE TT En weet Or Digital Multimeter HE 200 ee Input Ti Diff Output A J A E1446A F_2_3 Figure 2 3 Low level Outputs Test Setup Test Procedure 1 Reset the amplifier RST CLS Reset amplifier and clear Status registers Repeat steps 2 5 for each entry listed in Table 2 1 2 Connect the DMM to the amplifier output specified in Table 2 1 see Figure 2 3 3 Connect the Source to the amplifier input specified in Table 2 1 see Figure 2 3 4 Set the Source to the input voltage specified in Table 2 1 5 Measure the amplifier output with the DMM Record the results in Table 2 4 Verification Tests 2 13 Table 2 1 Low level Outputs Test Connect DMM to Connect Source to Input Voltage VDC
33. placed on an exchange basis NEW EXCHANGE ASSEMBLIES Exchange assemblies are available only on a trade in basis Defective assemblies must be returned for credit Assemblies required for spare parts stock must be ordered by the new assembly part number To order a part listed in Table 3 1 specify the Agilent Technologies part number and the quantity required Send the order to your nearest Agilent Technologies Sales and Support Office A list of Sales and Support Offices can be found at the end of this manual Table 3 1 lists the replaceable parts for the Agilent E1446A amplifier See Figure 3 1 for locations of replaceable parts Table 3 2 lists the reference designators for the amplifier Table 3 3 is the code list of manufacturers Replaceable Parts 3 1 Reference Designator Agilent Part Number Table 3 1 Agilent E1446A Replaceable Parts Part Description Mfr Part Number Al A1CR301 A1CR601 A1F201 F206 A1J701 J702 A1J901 J902 A1J1001 A1P1 P2 A1SP301 HDL1 HDL2 HDW1 HDW5 MP1 PNL1 SCR1 SCR2 SCR3 SCR4 SCR5 SCR6 SCR7 SCR13 SHD1 SHD2 E1446 66201 E1446 69201 E1446 66501 1990 0966 1990 0966 2110 0665 1250 1842 1250 1842 1250 1842 1252 1596 3101 3066 3050 0604 E1400 84105 E1400 84106 2950 0054 8160 0686 E1446 00201 0515 1968 0515 0368 0515 1375 0515 1135 E1446 00601 E1446 00602 E1446 60000 E1400 90021 E1446 10031 E1446 10032 E1446 90001 NEW EXCHANGE
34. ra e 130 D 71034 B blingen Germany Agilent 75000 Series C Service Documentation Plug in Module User s Manuals Plug in Module Service Manuals Manual Descriptions Instrument Applications Suggested Sequence to Use Manuals Installation and Getting Started Guide Using the Command Module Command Module User s Manual Mainframe User s Manual Repairing the Command Module Command Module Service Manual C_SEQ Title Description Series C Installation and Getting Started Guide Step by step instructions for all aspects of plug in module mainframe and command module installation Also contains introductory programming information and examples Mainframe User s Manual Information to prepare the mainframe and to install plug in modules Command Module User s Manual Programming information for the command module and general programming information for instruments installed in the mainframe Command Module Service Manual Command module service information Includes information and procedures for functional verification operation verification performance verification troubleshooting and repair Plug In Module User s Manuals Plug in module programming and configuration information Contains programming examples and SCPI command reference for the module Plug In Module Service Manuals Plug in module service information Depending on the m
35. racy Equipment Setup e Set Source to DCV e Set DMM to DCV autorange e Connect the DMM to the amplifier as shown in Figure 2 2 446A 3325B Function Generator O 00001 Signal Input 1 la E ea nt ee 0 0 Bro Tl J Input 2 fie 3458A Digital Multimeter NSense Input Main Output z ae EX wud Pet a Y a AA es E1446A F_2_2 Figure 2 2 Output Attenuation Test Setup Test Procedure 1 Reset the amplifier RST CLS Reset amplifier and clear Status registers 2 Connect the Source to Input1 as shown in Figure 2 2 3 Set the amplifier output attenuation to O dB OUTP1 ATT 0 Verification Tests 2 9 4 Set the Source to 0 5 VDC and measure the amplifier output with the DMM Repeat with the Source set to 0 5 VDC Average the two readings to get a reference level Positive Reading V Negative Reading V 2 Reference Level V 5 Set the amplifier Output attenuation to 20 dB OUTP1 ATT 20 6 Measure a 0 5 VDC signal and a 0 5 VDC signal as in step 4 Average the two readings Positive Reading V Negative Reading V 2 Averaged Reading V 7 Calculate the attenuation using the results from steps 4 and 6 Record the results in Table 2 4 Averaged Reading V Attenua
36. rial Number Prefix Identifies a series of identical instruments Country of Origin A United States Serial Number Suffix Assigned sequentially to each instrument E1446A F_1_4 Figure 1 4 Agilent Technologies Serial Numbers 1 6 General Information Reco mmen d ed Table 1 1 lists the test equipment recommended for testing and servicing the Te st Eq u i pme nt amplifier Essential requirements for each piece of test equipment are described in the Requirements column Table 1 1 Recommended Test Equipment Instrument Requirements Recommended Model Controller GPIB GPIB compatibility as defined by IEEE HP 9000 Series 300 Standard 488 1988 and the identical ANSI Standard MC1 1 SH1 AH1 T2 TEO L2 LEO SRO RLO PPO DCO DTO and C1 2 3 4 5 Mainframe Compatible with amplifier Agilent E1400B T or Agilent E1401A Command Module TTL compatible Trig Out Agilent E1405B or Agilent E1406A Digital Multimeter DCV Agilent 3458A Function Generator DCV Agilent 3325A B Spectrum Analyzer Frequency Range 100 Hz 40 MHz Agilent 3585A B Tracking Generator 10 dBm nominal F Functional Verification O Operation Verification Tests P Performance Verification Tests T Troubleshooting General Information 1 7 1 8 General Information 2 Verification Tests Introduction WARNING Test Conditions Procedures Performance Test R
37. rm test FOR Ch 1 TO 2 OUTPUT Amp INP amp VAL Ch amp ATT 0 DISP Connect Source to Input amp VAL Ch amp then press Continue PAUSE DISP GOSUB Measure Ref_level Pos_rdg Neg_rdg 2 PRINT TAB 12 Input amp VAL Ch PRINT PRINT USING 10A 10X 12A Atten dB Reading dB PRINT FOR l 0 TO 4 Loop through attenuations Attn 2 OUTPUT Amp INP amp VAL Ch amp ATT amp VAL Attn WAIT 5 GOSUB Measure Ave_rdg Pos_rdg Neg_rdg 2 Continued on next page Verification Tests 2 7 440 450 460 470 480 490 500 510 Result_db 20 LGT Ave_rdg Ref_level Result_db PROUND Result_db 4 PRINT USING 4X DD 16X MDD 4D Attn Result_db NEXT Next attenuation PRINT PRINT NEXT Ch Next input 520 Quit 530 540 550 560 ASSIGN Amp TO ASSIGN Dmm TO STOP 570 Measure 580 590 600 610 620 630 640 650 660 670 680 690 700 710 720 730 Measure positive signal DISP Set Source to amp VAL Vin amp VDC then press Continue PAUSE DISP OUTPUT Dmm TRIG SGL ENTER Dmm Pos_rdg Measure negative signal DISP Set Source to amp VAL Vin amp VDC then press Continue PAUSE DISP OUTPUT Dmm TRIG SGL ENTER Dmm Neg_rdg RETURN END 2 8 Verification Tests Test 2 2 Output Attenuator Test Description The purpose of this test is to verify that the amplifier meets its specifications for output attenuator accu
38. tion dB 20 00 Reference Level V 8 Connect the Source to Input2 as shown in Figure 2 2 9 Repeat steps 4 7 for Input2 2 10 Verification Tests Example Program 10 RE STORE OUTPUT_ATTN 20 30 Set up I O path 40 ASSIGN Amp TO 70911 50 ASSIGN Dmm TO 722 60 70 80 90 Set up DMM DISP Connect DMM to Main Output then press Continue PAUSE CLEAR SCREEN OUTPUT Dmm PRESET NORM DCV RANGE AUTO Set up amplifier OUTPUT Amp RST CLS Reset amplifier WAIT 5 Perform test FOR Ch 1 TO 2 DISP Connect Source to Input amp VAL Ch amp then press Continue PAUSE DISP 120 dB attenuator OFF OUTPUT Amp OUTP1 ATT O WAIT 5 GOSUB Measure Ref_level Pos_rdg Neg_rdg 2 PRINT TAB 12 Input amp VAL Ch PRINT 120 dB attenuator ON OUTPUT Amp OUTP1 ATT 20 WAIT 5 GOSUB Measure Ave_rdg Pos_rdg Neg_rdg 2 Continued on next page Verification Tests 2 11 420 Result_db 20 LGT Ref_level Ave_rdg 430 Result_db PROUND Result_db 4 440 PRINT Reading dB Result_db 450 PRINT 460 PRINT 470 NEXT Ch Next input 480 490 Quit 500 ASSIGN Amp TO 510 ASSIGN Dmm TO 520 STOP 530 540 Measure 550 Measure positive signal 560 DISP Set Source to amp VAL Vin amp VDC then press Continue 570 PAUSE 580 DISP 590 OUTPUT ODmm TRIG SGL 600 ENTER Dmm Pos_rdg 610 620 Measure negative signal 630 DISP Set Source to am
39. tor 8 1 16 dB attenuator 16 1 Test 2 2 Output Attenuator Test Values in dB Inputt 20 dB attenuator 20 1 Input2 20 dB attenuator 20 1 Test 2 3 Low level Outputs Test Values in Vdc Diff Output 0 5 V input Input1 0 990 0 75 V input Input1 1 485 0 75 V input Input1 1 515 0 5 V input Input2 0 990 Diff Output 0 5 V input Input 0 990 0 75 V input Input1 1 485 0 75 V input Input1 1 515 0 5 V input Input2 0 990 Verification Tests 2 29 Table 2 4 Performance Test Record for the Agilent E1446A Page 4 of 4 Model Report No Date Test Measured Description Minimum Reading Maximum Test 2 4 Main Output Test Values in Vdc Inputt 1 V input 1 V input Input2 1 V input 1 V input Test 2 5 Offset DAC Test Values in Vdc Offset Voltage 10 V 5V oV 5V 9 9996 V Test 2 6 Bandwidth Test Values in Hz Inputt Main Output Diff Output Diff Output Input2 Main Output Diff Output Diff Output Due to the high impedance load the expected reading is equal to twice the selected offset voltage Single sided test Maximum is not applicable 2 30 Verification Tests 3 Replaceable Parts Introduction Exchange Assemblies Ordering Information Replaceable Parts List This chapter contains information for ordering replaceable parts for the Agilent E1446A amplifier Table 3 1 lists assemblies that may be re
40. uidelines e Avoid unnecessary component unsoldering and soldering Excessive replacement can result in damage to the circuit board and or adjacent components e Do not use a high power soldering iron on etched circuit boards as excessive heat may lift a conductor or damage the board e Use a suction device or wooden toothpick to remove solder from component mounting holes When using a suction device be sure that the equipment is properly grounded After making repairs to the Agilent E1446A amplifier inspect the amplifier for any signs of abnormal internally generated heat such as discolored printed circuit boards or components damaged insulation or evidence of arcing Determine and correct the cause of the condition Then perform the Self Test described in Chapter 2 to verify that the amplifier is functional 4 4 Service
41. uipment Required 2 2 o o e eee 4 1 Service AdS ei a Ake eee A ch A het ee A ee 4 1 Repair Strategy soc ac oe a bo be Pome a Bee ees WED Pe a 4 1 Troubleshooting Techniques 2 00002 eee eee 4 2 Identifying the Problem 0 000 eee eee eee 4 2 Testing the Assembly o o e e e 4 2 Disassembly iia o a ado Ree a aes 4 3 Repair Maintenance Guidelines 0 0002 eee 4 4 ESD Precautions 2 soc naa os beg ee ale 2 gon gle Hoes 4 4 Soldering Printed Circuit Boards 0050 4 4 Post Repair Safety Checks 1 General Information ntrod u ct ion This manual contains information required to test troubleshoot and repair the Agilent E1446A C Size VXI Summing Amplifier DAC amplifier See the Agilent E1446A User s Manual for additional information Figure 1 1 shows the Agilent E1446A This chapter includes the following sections e Introduction Safety Considerations Inspection Shipping Environment Amplifier Description Recommended Test Equipment FILARA F 1 1 Figure 1 1 Agilent E1446A Summing Amplifier DAC General Information 1 1 Safety Considerations Warnings and Cautions WARNING This product is a Safety Class I instrument that is provided with a protective earth terminal when installed in the mainframe The mainframe amplifier and all related documentation should be reviewed for familiarization with safety markings and
42. urce to amp VAL Input_v amp VDC then press Continue 600 PAUSE 610 DISP 620 Measure output 630 OUTPUT ODmm TRIG SGL 640 ENTER Dmm Rdg 650 Rdg PROUND Rdg 5 660 RETURN 670 Data_nominal 680 DATA 1 0 1 5 1 5 1 0 690 Data_input 700 DATA INPUT1 INPUT1 INPUT1 INPUT2 710 END Verification Tests 2 15 Test 2 4 Main Output Test Description The purpose of this test is to verify that the amplifier meets its accuracy specifications for the main output Equipment Setup e Set Source to DCV e Set DMM to DCV autorange e Connect the DMM to the amplifier as shown in Figure 2 4 3325B gume Function Generator 3458A Digital Multimeter NSense Input Main Output amp cre MAIHI ra Figure 2 4 Main Output Test Setup Test Procedure 1 Reset the amplifier RST CLS Reset amplifier and clear Status registers 2 Connect the Source to the amplifier Input as shown in Figure 2 4 3 Set the Source to 1 VDC and measure the amplifier output Record the result in Table 2 4 4 Set the Source to 1 VDC and measure the amplifier output Record the result in Table 2 4 5 Repeat steps 3 and 4 with Source connected to Input2 Record the results in Table 2 4 2 16 Verification Tests Example Program 10 RE STORE MAIN_OUT 20 DIM N
Download Pdf Manuals
Related Search