Agilent 75000 Series B Agilent E1343A, E1344A, E1345A, E1347A, E1355A and E1356A Relay Multiplexers Service Manual Copyright © Agilent Technologies, Inc.
Contents E1343A/44A/45A/47A/55A/56A Service Manual Warranty . . . . . . . . . . Safety Symbols . . . . . . WARNINGS . . . . . . . . Declaration of Conformity . Reader Comment Sheet . . Manual Overview . . . . . Manual Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3. Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Parts Locators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Chapter 4. Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Introduction . . . . .
Certification Agilent Technologies, Inc. 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.
Documentation History All Editions and Updates of this manual and their creation date are listed below. The first Edition 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 or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of the Update information for the previous Edition.
Declaration of Conformity Declarations of Conformity for this product and for other Agilent products may be downloaded from the Internet. There are two methods to obtain the Declaration of Conformity: • Go to http://regulations.corporate.agilent.com/DoC/search.htm . You can then search by product number to find the latest Declaration of Conformity. • Alternately, you can go to the product web page (e.g., www.agilent.
Notes 6 E1343A/44A/45A/47A/55A/56A Service Manual
What’s in This Manual Manual Overview This manual shows how to service the E1343A, E1344A, E1345A, E1347A, E1355A, and E1356A Relay Multiplexers. Consult the E1343A/E1344A/E1345A/E1347A User’s Manual for additional information on installing, configuring, and operating the E1343A, E1344A, E1345A and E1347A. Consult the E1355A/E1356A Strain Gage Multiplexer User’s Manual for additional information on installing, configuring, and operating the E1355A and E1356A.
Notes 10 What’s In This Manual E1343A/44A/45A/47A/55A/56A Service Manual
Chapter 1 General Information Introduction This manual contains information required to test, troubleshoot, and repair the following Agilent relay multiplexers: • E1343A 16-Channel High Voltage Relay Multiplexer • E1344A 16-Channel High Voltage & Thermocouple Compensated • • • • Relay Multiplexer E1345A 16-Channel Relay Multiplexer E1347A 16-Channel Thermocouple Compensated Relay Multiplexer E1355A 8-Channel 120-Ohm Relay Multiplexer E1356A 8-Channel 350-Ohm Relay Multiplexer.
Safety Considerations These products are Safety Class I instruments provided with a protective earth terminal when installed in the mainframe. Check the mainframe, multiplexer, and all related documentation for safety markings and instructions before operation or service. Refer to the WARNINGS on page 4 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.
WARNING 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.
Relay Life Electromagnetic relays are subject to normal wear-out. Relay life depends on several factors. Two factors are loading and switching frequency effects. Loading and Switching Frequency Effects Relay Load. In general, higher power switching reduces relay life. In addition, capacitive/inductive loads and high inrush currents (e.g., when turning on a lamp or motor) reduce relay life. Exceeding the specified maximum inputs can cause catastrophic failure. Switching Frequency.
Replacement Strategy NOTE The replacement strategy also depends on the application. If some relays are used more often, or at higher load, than the others, the relays can be individually replaced as needed. If all of the relays see similar loads and switching frequencies, then replace the entire circuit board when the relay end-of-life approaches. The sensitivity of the application should be weighed against the cost of replacing relays with some useful life remaining.
Multiplexer Specifications Multiplexer Environment Refer to the individual module’s User’s Manual for specifications. These specifications are the performance standards or limits against which the instrument may be tested.
Recommended Test Equipment Table 1-1 lists the test equipment recommended for testing, adjusting, and servicing the relay multiplexers. Essential requirements for each piece of test equipment are described in the Requirements column. Table 1-1. Recommended Test Equipment Instrument Requirements Recommended Model Use* Controller, HP-IB HP-IB compatibility as defined by IEEE Standard 488-1987 and the identical ANSI Standard MC1.1: SH1, AH1, T2, TE0, L2, LE0, SR0, RL0, PP0, DC0, DT0, and C1, 2, 3, 4, 5.
Figure 1-2.
Shipping Guidelines Follow the steps in Figure 1-3 to return a relay multiplexer to an Agilent Technologies Sales and Service Office. 1. Prepare the Multiplexer * Remove user wiring from terminal block * Attach tag to module/pod that identifies - Owner - Model Number/Serial Number - Service required * Place tagged device in approved anti-static bag 2.
Notes 20 General Information Chapter 1
Chapter 2 Verification Tests Introduction This chapter describes the verification tests for the E1343A, E1344A, E1345A, E1347A, E1355A, E1356A Relay Multiplexers.
Functional Verification Test The Functional Verification Test for the multiplexer modules consists of sending the *IDN? command and checking the response. This test can be used to verify that the multiplexer is connected properly and is responding to a basic command. Procedure 1. Verify that the multiplexer is properly installed in mainframe 2. Verify that the mainframe has passed its power-on test. 3. Send *IDN? to the multiplexer (see example following) 4.
Performance Verification Tests The procedures in this section are used to test the multiplexer’s electrical performance using the specifications as the performance standards. There are two performance verification tests for the relay multiplexers: Test 2-1: Closed-Channel Resistance Test, and Test 2-2: DC Isolation Test. These tests are suitable for incoming inspection, troubleshooting, and preventive maintenance. Wiring the Test Fixture A test fixture is required for the Performance Verification Tests.
Test 2-1: Closed Channel Resistance Test This test verifies that all relay contacts meet the closed-channel resistance specification for the multiplexer. If the closed-channel resistance of any relay contact is greater than 2Ω, the relay should be replaced. This test uses the test fixture (see Figure 2-1). Measuring Protection Resistors NOTE Since there are 100Ω protection resistors (R20 through R31) in the relay paths, measure the protection resistor values to begin this test.
Chs 00 - 07 and 90 HI Measurements 1. Make Hardware Connections – Turn mainframe power OFF – Connect DMM leads as shown in Figure 2-3 – Turn mainframe power ON Figure 2-3. Ch 0-7 and 90 HI Measurements Connections 2.
Figure 2-4. Ch 0-7 and 90 LO Measurement Connections 3. Repeat for Channels 01 - 07 LO and Channel 90 LO – Repeat steps 1 and 2 for channels 01 - 07 LO and 90 LO – Use CLOS (@nncc) and OPEN (@nncc), where nn = card # and cc = channel # (omit leading zeroes in nn) – For Channel 90 LO, subtract combined value of R21 + R27 Ch 00 - 07 and 90 GU Measurements 1. Make Hardware Connections – Turn mainframe power OFF – Connect DMM leads as shown in Figure 2-5 – Turn mainframe power ON Figure 2-5.
3. Repeat for Channels 01 - 07 GU and Channel 90 GU – Repeat steps 1 and 2 for channels 01 - 07 GU and 90 GU – Use CLOS (@nncc) and OPEN (@nncc), where nn = card # and cc = channel # (omit leading zeroes in nn) – For Channel 90 GU, subtract combined value of R22 + R28 Ch 08 - 15 and 91 - 92 HI Measurements 1. Make Hardware Connections – Turn mainframe power OFF – Connect DMM leads as shown in Figure 2-6 – Turn mainframe power ON Figure 2-6. Ch 08-15 and 91-92 HI Measurements Connections 2.
Figure 2-7. Chs 08-15 and 91-92 LO Measurements Connections 2. Measure Channel 08 LO Resistance Send *RST to multiplexer Send CLOS (@nn08) to close chan 08, where nn = card # Trigger the DMM with TRIG SGL and note reading Send OPEN (@nn08) to open channel 08 Subtract measured value of R24 from DMM reading Enter the result in Table 2-2 for Channel 08 LO 3.
2. Measure Channel 08 GU Resistance Send *RST to multiplexer Send CLOS (@nn08) to close chan 08, where nn = card # Trigger the DMM with TRIG SGL and note reading Send OPEN (@nn08) to open channel 08 Subtract measured value of R25 from DMM reading Enter the result in Table 2-2 for Channel 08 GU 3.
200 PRINT TABXY(1,5),"Measure resistor R";I;"value (in Ohms)" 210 INPUT " Enter resistor value (in Ohms), then press Continue ",R(I) 220 NEXT I 230 240 250 260 CLEAR SCREEN PRINT "Install Component Assembly and Test Fixture " PRINT PRINT " 1. Turn Mainframe power OFF" 270 280 290 300 PRINT " PRINT " PRINT " PRINT " 2. Install E1345A Component Assembly into Mainframe " 3. Attach Test Fixture to Component Assembly" 4. Turn Mainframe power ON " 5.
600 610 620 PRINT "Resistance for Channel";I;"Relay is >2.
990 1000 1010 IF I=8 AND K=2 THEN Result1(I,K)=Value1(I,K)-(R(25)+R(31)) IF I=9 AND K=0 THEN Result1(I,K)=Value1(I,K)-(R(23)+R(26)) IF I=9 AND K=1 THEN Result1(I,K)=Value1(I,K)-(R(24)+R(27)) 1020 1030 1040 1050 IF I=9 AND K=2 THEN Result1(I,K)=Value1(I,K)-(R(25)+R(28)) IF Result1(I,K)<0. THEN Result1(I,K)=0. IF Result1(I,K)>2.0 THEN PRINT "Resistance for Channel";I;"Relay is >2.
Typical Results Channel HI (OHMS) LO (OHMS) GU (OHMS) 0 1 2 3 4 5 6 7 90 8 9 10 11 12 13 14 15 91 92 0.51 0.49 0.48 0.42 0.52 0.52 0.49 0.46 0.49 0.47 0.51 0.43 0.45 0.50 0.48 0.52 0.43 0.44 0.50 0.35 0.31 0.41 0.39 0.41 0.35 0.40 0.36 0.40 0.35 0.36 0.33 0.39 0.41 0.41 0.36 0.41 0.38 0.40 0.61 0.59 0.57 0.61 0.55 0.59 0.60 0.54 0.55 0.60 0.61 0.55 0.58 0.60 0.55 0.54 0.51 0.55 0.
HI to Chassis Isolation 1. Make hardware connections as shown in Figure 2-9 2. Set DMM to 2-wire ohms, 1 GΩ range 3. Send CLOS (@nn00:nn15, nn90:nn93) to close all relays 4. Trigger the DMM with TRIG SGL 5. Record the DMM reading on Table 2-2 (HI to Chassis) Figure 2-9. HI to Chassis Isolation Connections HI to LO Isolation 1. Make hardware connections as shown in Figure 2-10 2. Trigger the DMM with TRIG SGL 3. Record the DMM reading on Table 2-2 (HI to LO) Figure 2-10.
HI to GU Isolation 1. Make hardware connections as shown in Figure 2-11 2. Trigger the DMM with TRIG SGL 3. Record the DMM reading on Table 2-2 (HI to GU) Figure 2-11. HI to GU Isolation Connections Example: DC Isolation Test This example performs DC Isolation Tests for HI to Chassis, HI to LO, and HI to GU (GUARD).
160 PAUSE 170 CLEAR SCREEN 180 ! 190 200 ! ! Measure DC Isolation (HI to Chassis, HI to LO, HI to GU) 210 OUTPUT @Mux;"*RST" 220 FOR I=0 TO 2 230 PRINT TABXY(1,1),"DC Isolation HI to ";Conn$(I);" Measurements " 240 PRINT TABXY(1,3),"1. Connect DMM INPUT HI lead to COMMON HI" 250 PRINT TABXY(1,4),"2.
Performance Test Record Table 2-2, "Performance Test Record," is a form you may copy and use to record performance verification test results for the multiplexers. Table 2-2 shows multiplexer test limits, DMM measurement uncertainty, and test accuracy ratio (TAR) values. Test Limits Measurement Uncertainty Closed Channel Resistance Test Test limits are defined for relay closed channel resistance and DC isolation using the specifications in the individual module’s User’s Manual.
Table 2-2. Performance Test Record (Page 1 of 3) General Information Test Facility: Name_______________________________________ Report No.
Table 2-2. Performance Test Record (Page 2 of 3) Test No/Description Minimum* Value Measured Value (V) Maximum Measurement Value Uncert Test Acc Ratio (TAR) 2-1. Closed Channel Resistance (Values in Ohms) HI Path Resistance Channel 00 Channel 01 Channel 02 Channel 03 Channel 04 Channel 05 __________________ __________________ __________________ __________________ __________________ __________________ 2.0 2.0 2.0 2.0 2.0 2.0 8.00E-5 8.00E-5 8.00E-5 8.00E-5 8.00E-5 8.
Table 2-2. Performance Test Record (Page 3 of 3) Test No/Description Minimum* Value Measured Value (V) Maximum* * Value Meas Uncert Test Acc Ratio (TAR) 2-1. Closed Channel Resistance (Values in Ohms) (cont’d) GU Path Resistance Channel 00 Channel 01 Channel 02 Channel 03 Channel 04 Channel 05 ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ 2.0 2.0 2.0 2.0 2.0 2.0 8.00E-5 8.00E-5 8.00E-5 8.00E-5 8.00E-5 8.
Chapter 3 Replaceable Parts Introduction This chapter contains information on ordering replaceable parts for the E1343A/44A/45A/47A/55A/56A Relay Multiplexers with specific serial number ranges. The tables provide the following information: • Table 3-1 lists assembly and terminal module part numbers for the relay multiplexers.
Table 3-1.
Table 3-2.
Table 3-3.
Table 3-4.
Parts Locators Figures 3-1 through 3-3 show locations of replaceable parts for the E1343A, E1344A, E1345A, E1347A, E1355A, and E1356A Relay Multiplexers with serial numbers that fall within a specific range. (See applicable serial number ranges on the first page of this chapter.) See Table 3-4 for Reference Designators. Schematic diagrams are provided at the back of this manual. Figure 3-1.
Figure 3-2.
Figure 3-3.
Chapter 4 Service Introduction This chapter contains generic service information for the multiplexers. Also included are troubleshooting, repair, and maintenance guidelines. Refer to the tables at the end of this chapter for information on the Parts Locator, Component Locator and Schematic Diagram drawings included with this manual. WARNING Do not perform any of the service procedures shown unless you are a qualified, service-trained technician and have read the WARNINGS and CAUTIONS in Chapter 1.
E1343A/44A Multiplexer Descriptions The E1343A 16-Channel High Voltage Relay Multiplexer and the E1344A 16-Channel High Voltage Relay Multiplexer (with thermocouple compensation) modules consist of an E1343A component assembly (part number E1343-66201) and a terminal module. Each multiplexer provides switching (multiplexing) of up to 16 channels (channels 00 to 15). Each channel has HIGH (H), LOW (L), and GUARD (G) connections. See Figure 4-1 for a block diagram of these modules.
Terminal module connections include H, L, and G terminals for Channels 00 - 15, Bank 0 and Bank 1 Commons, and the AT and BT Tree Switches. In addition, each channel H line has a jumper on the terminal module that can be removed to add filter components, attenuators, or current shunts. E1345A/47A Multiplexer Descriptions The E1345A 16-Channel Relay Multiplexer and the E1347A 16-Channel Thermocouple Relay Multiplexer modules consist of an E1345A component assembly ( E1345-66201) and a terminal module.
Figure 4-1.
Terminal Module Description The terminal module provides connections from user devices to the multiplexer. The terminal module also provides connections for multimeters, voltmeters, counters, and other measuring devices. For the E1347A only, a thermistor is mounted on the terminal module. Terminal module connections include H, L, and G terminals for Channels 00 - 15, Bank 0 and Bank 1 Commons, and the AT and BT Tree Switches.
Figure 4-2.
Table 4-1.
Troubleshooting Techniques To troubleshoot a relay multiplexer problem, you must first identify the problem and then isolate the cause of the problem to a replaceable part. See Chapter 3, "Replaceable Parts," or Appendix B, "Backdating Information," for descriptions and locations of replaceable parts, depending on the serial number of your multiplexer.
Making Visual Checks Visual checks for the multiplexer assemblies include the following. See Table 4-3 for typical symptoms/actions. • Check switches/jumpers • Check for heat damage • Check terminal module connections NOTE Refer to the appropriate user’s manual for information on logical address and IRQ settings. If there are no apparent problems following the visual checks, run the Performance Verification Tests in Chapter 2 to see if a relay or other component is defective. Table 4-3.
Testing the Multiplexer You can use the tests and checks in Chapter 2, "Verification Tests," and the information in Table 4-4 to isolate the problem to a relay, to a component, or both. For example, if Test 2-1: Closed Channel Resistance Test failed for channel 0, replace relay K100, etc. See Chapter 3, "Replaceable Parts," or Appendix B, "Backdating Information," for replaceable parts lists and locator diagrams, depending on the serial number of your multiplexer. Table 4-4.
Repair and Maintenance Guidelines This section provides guidelines for handling the relay multiplexers including: • ESD precautions • Soldering printed circuit boards • Post-repair safety checks ESD Precautions Electrostatic discharge (ESD) may damage static sensitive devices in the multiplexers. This damage can range from slight parameter degradation to catastrophic failure.
Component Locators and Schematic Diagrams The following tables list Component Locator Diagrams and Schematic Diagrams provided with this manual. Refer to Table 4-5 or Table 4-6, depending on the serial number of your E1343/44/45/47/55/56A multiplexer. Table 4-7 lists the terminal module diagrams. The terminal module diagram table applies to all E1343A/44A/45A/47A/56A/57A multiplexers, regardless of their serial number. Table 4-5.
Table 4-7. Terminal Module Component Locator and Schematic Diagram Drawings (for all E1343A/44A/45A/47A/55A/56A Relay Multiplexers, regardless of serial number) Part Number Component Locators Schematic Diagrams Chapter 4 Drawing Number E1345-66510 E1347-66510 L-E1345-66510 L-E1347-66510 E1355-66510 E1356-66510 L-E1355-66510 L-E1356-66510 E1345-66510 E1347-66510 S-E1345-66510 S-E1347-66510 E1355-66510 E1356-66510 S-E1355-66510 S-E1356-66510 Drawing Title E1343A/E1345A 16-Ch.
Notes 62 Service Chapter 4
Appendix A Verification Tests - C Programs Functional Verification Test These programs are designed to do the Functional Verification Tests found in Chapter 2, "Verification Tests." Example: Self-Test The Functional Verification Test for the multiplexer modules consists of sending the *IDN? command and checking the response. This test can be used to verify that the multiplexer is connected properly and is responding to a basic command. #include #include
Performance Verification Tests These programs are designed to do the Performance Verification Tests found in Chapter 2, "Verification Tests." Example: Closed Channel Resistance Test The following program performs a Closed Channel Resistance Test on Channels 00 - 15 and 90 - 92 HI, LO, and GU. If the conntact resistance for a channel is > 2.0 Ω, the program displays the message Resistance for Channel chan Relay is > 2.0 Ohms . /* Closed-channel Resistance Test E1346A */ #include
iprintf (dm, "TRIG SGL\n"); iscanf (dm, "%lf", &R[i]); iscanf (dm, "%t", cr); printf ("\nResistance of R%u = %lf", i+38, R[i]); } printf ("\n\n\nInstall Component Assembly and Test Fixture"); printf ("\n\n 1. Turn Mainframe AND 3458a DMM power OFF."); printf ("\n 2. Connect HP-IB Cable between mainframe and DMM."); printf ("\n 3. Install E1364A Component Assembly into Mainframe."); printf ("\n 4. Attach Test Fixture to Component Assembly."); printf ("\n 5. Turn Mainframe and DMM power ON"); printf ("\n 6.
j = 100; for (i = 0;i <= 2; i++) { iprintf (id, "CLOS (@%u)\n", j); iprintf (dm, "TRIG SGL\n"); iscanf (dm, "%lf", &value1[i][1]); iscanf (dm, "%t", cr); iprintf (id, "OPEN (@%u)\n", i*8); result1[i][1] = value1[i][1] - R[42]; if (result1[i][1] < 0) result1[i][1] = 0; if (result1[i][1] > 2.0) printf ("\n*** Resistance for Channel %u LO Relay is 2.0 Ohms", i+90); j = j + 8; } printf ("\n\nMeasurements complete for Channels 90-92 LO."); printf ("\nPress ENTER for Channel 90-92 G measurements.
getchar (); iprintf (id, "CLOS (@%u)\n", j); iprintf (dm, "TRIG SGL\n"); iscanf (dm, "%lf", &value1[0][3]); iscanf (dm, "%t", cr); result1[0][3] = value1[0][3] - R[38] - R[43]; iprintf (id, "open (@%u)\n", j); if (result1[0][3] < 0) result1[0][3] = 0; if (result1[0][3] > 2.0) printf ("\n*** Resistance for Channel 93 HI Relay is 2.0 Ohms"); printf ("\n\n 1. Connect DMM Sense and Input HI leads to VOLTAGE SENSE LO."); printf ("\n 2. Connect DMM Sense and Input LO leads to CURRENT SOURCE LO."); printf ("\n 3.
printf ("\n\nChannels 90-92 LO and G Contact Resistance\n"); printf ("\n CH 90 LO %6.4lf Ohms CH 91 LO %6.4lf Ohms CH 92 LO %6.4lf Ohms", result1[0][1],result1[1][1],result1[2][1]); printf ("\n CH 90 G %6.4lf Ohms CH 91 G %6.4lf Ohms CH 92 G %6.4lf Ohms", result1[0][2],result1[1][2],result1[2][2]); printf ("\n\nChannel 93 HI, LO, and G Contact Resistance\n"); printf ("\n CH 93 HI %6.4lf Ohms\n CH 93 LO %6.4lf Ohms\n CH 93 G %6.
iprintf (dm, "TRIG SGL\n"); iscanf (dm, "%t", reading); printf ("\nDC Isolation -- HI to CHASSIS "); printf (" R = %s Ohms", reading); /*........................HI to LO.....................................*/ printf ("\n\nConnect DMM HI and LO to E1346A COMMON HI and COMMON LO"); getchar (); iprintf (dm, "TRIG SGL\n"); iscanf (dm, "%t", reading); printf ("\nDC Isolation -- HI to LO "); printf (" R = %s Ohms", reading); /*........................HI to GUARD..................................
Notes 70 Example C Programs Appendix A
Appendix B Backdating Information Introduction This chapter contains information for ordering replaceable parts for the E1343A/44A/45A/47A/55A/56A Relay Multiplexers with specific serial number ranges not covered in Chapter 3. The tables provide the following: • Table B-1 lists assembly and terminal module part numbers for the relay multiplexers.
E1345-80001. To order only the Terminal Card, use E1345-66510. To order only the Terminal Case Assembly, use E1300-84401. Table B-1.
Reference Designator Part Number Qty Part Description COMPONENT ASSY (CONT’D...HP E1345-66201) J1 J2 J3 K0-K15 K90-K93 1252-1596 1252-3712 1251-6001 0490-1707 2 1 1 20 CONN-POST TYPE 2.54-PIN-SPCG 96-CONTACT CONN-POST TYPE .100-PIN-SPCG 12-CONTACT CONN-POST TYPE .100-PIN-SPCG 6-CONTACT RELAY-REED 3A 500MA 110VAC 5VDC-COIL 5VA MP1-MP2 P1 P3-P4 PNL1 1400-1546 1252-1596 1258-0141 E1345-00202 2 2 1 BRACKET PC BOARD HOLDER; BLACK; EXTR CONN-POST TYPE 2.54-PIN-SPCG 96-CONTACT JUMPER-REMOVABLE FOR .
Reference Designator Part Number Qty Part Description COMPONENT ASSY (CONT’D...
Table B-3. E1343A, E1344A Replaceable Parts (See applicable Serial Number ranges listed on the first page of this chapter)) Reference Designator Part Number Qty.
Reference Designator Part Number Qty. Part Description COMPONENT ASSY (CONT’D...
Reference Designator Part Number Qty. Part Description COMPONENT ASSY (CONT’D...
Parts Locators Figures B-1 through B-3 show locations of replaceable parts for the E1343A, E1344A, E1345A, E1347A, E1355A, and E1356A Relay Multiplexers with serial numbers that fall within a specific range. (See applicable serial number ranges on the first page of this chapter.) See Table B-4 for Reference Designators. A more detailed component locator and schematic diagrams are provided at the back of this manual. Figure B-1.
Figure B-2.
Figure B-3.
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