Agilent Technologies E1346A Manuel de service Page 1

Agilent 75000 Series BAgilent E1346A48-Channel Relay MultiplexerService Manual Enclosed is the Service Manual for the Agilent E1346A

SafetyConsiderationsThis product is a Safety Class I instrument that is provided with a protectiveearth terminal when installed in the mainframe. Che

WARNINGUSING AUTOTRANSFORMERS. If the mainframe is to beenergized via an autotransformer (for voltage reduction) makesure the common terminal is conn

Relay Life Electromagnetic relays are subject to normal wear-out. Relay life dependson several factors. Two factors are loading and switching frequenc

ReplacementStrategyThe replacement strategy also depends on the application. If some relays areused more often, or at higher load, than the others, th

Multiplexer DescriptionThe Agilent E1346A Single Ended Relay Multiplexer is an "instrument" ina VXIbus mainframe. As such, the multiplexer i

Multiplexer Serial NumbersMultiplexers covered by this manual are identified by a serial number prefixlisted on the title page. Agilent Technologies u

RecommendedTest EquipmentTable 1-1 lists the test equipment recommended for testing, adjusting, andservicing the relay multiplexer. Essential requirem

Notify Agilent and carrier.Notify AgilentReturn Multiplexer to AgilentFigure 1-2. Initial (Incoming) Inspection Guidelines1-9 General Information

ShippingGuidelinesFollow the steps in Figure 1-3 to return a relay multiplexer to a AgilentTechnologies Sales and Support Office or Service Center.

2Verification TestsIntroduction This chapter describes the verification tests for the Agilent E1346A SingleEnded Relay Multiplexer. The three levels o

FunctionalVerification TestThe Functional Verification Test for the Agilent E1346A Single EndedRelay Multiplexer consists of sending the *IDN? command

PerformanceVerification TestsThe procedures in this section are used to test the multiplexer’s electricalperformance using the specifications in Appen

Test 2-1: ClosedChannelResistance TestThis test verifies that all relay contacts meet the closed-channel resistancespecification for the multiplexer.

Table 2-1. Measured Protection Resistor ValuesResistorMeasured Value (Ω)ResistorMeasured Value (Ω)R38R39R40___________________________________________

Ch 90-92LO Measurements 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM leads as shown in Figure 2-4• Turn mainframe power ON 1.

Ch 90-92GU Measurements 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM leads as shown in Figure 2-5• Turn mainframe power ON 2.

Ch 93 HI Measurement 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM leads as shown in Figure 2-6• Turn mainframe power ON2. Mea

Ch 93 LO Measurement 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM leads as shown in Figure 2-7• Turn mainframe power ON 2. Me

Ch 93 GU Measurement 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM leads as shown in Figure 2-8• Turn mainframe power ON 2. Me

Example: ClosedChannel ResistanceTestThis example performs a Closed Channel Resistance Test to measureChannels 00 - 47, Channels 90-92 and Channel 93

CertificationAgilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. AgilentTechn

300 PRINT " 5. Turn Mainframe power ON "310 PRINT " 5. Press Continue when ready to begin testing "320 PAUSE330 CLEA

670 PRINT TABXY(1,1),"Channels 90-92 ";Path$(K);"Measurements"680 PRINT TABXY(1,3),"Connect DMM Sense and Input

1040 PAUSE1050 CLEAR SCREEN1060 OUTPUT @Mux;"CLOS (@"&VAL$(J)&")"1070 OUTPUT @Dmm;"TRIG SGL"1

1440 NEXT K1450 PRINT1460 PRINT "Channel 93 Contact Resistance"1470 PRINT1480 FOR K=0 TO 21490 PRINT "Channel 93 ";Path

Test 2-2: DCIsolation TestThis test verifies that sufficient DC isolation exists at various points on themultiplexer. DC Isolation is checked from HI

HI to GU Isolation 1. Make hardware connections as shown in Figure 2-112. Trigger the DMM with TRIG SGL 3. Record the DMM reading on Table 2-2 (HI

Example:DC Isolation TestThis example performs DC Isolation Tests for HI to Chassis, HI to LO, andHI to GU (GUARD).10! RE-SAVE "DC_ISOL" 2

360 PAUSE 370 CLEAR SCREEN 380 PRINT TABXY(1,1),"DC Isolation Tests "390 PRINT TABXY(1,3),"HI to CHASSIS (Ohms)";Value(0) 400

PerformanceTest RecordTable 2-2, Performance Test Record, is a form you can copy and use torecord performance verification test results for the multip

Table 2-2. Performance Test Record (Page 1 of 3)General InformationTest Facility:Name ____________________________________Address _____________

Frame or chassis ground terminal—typicallyconnects to the equipment’s metal frame.Alternating current (AC).Direct current (DC). Indicates hazardous vo

Table 2-2. Performance Test Record (Page 2 of 3)Test No/DescriptionMinimum*Value Measured Value (V)MaximumValue **MeasUncert Test AccRatio (TAR)2-1

Table 2-2. Performance Test Record (Page 3 of 3)Test No/Description Minimum*ValueMeasured Value (V) MaximumValue **MeasUncert Test AccRatio (TAR)2

2-24 Verification Tests

3Replaceable PartsIntroduction This chapter contains information to order replaceable parts for AgilentE1346A Single Ended Relay Multiplexers with ser

Table 3-2. Agilent E1346A Replaceable PartsReferenceDesignatorAgilent PartNumberQty Part Description Mfr.CodeMfr. PartNumberASSEMBLIES/CABLES/MANUALS(

ReferenceDesignatorAgilent PartNumberQty Part Description Mfr.CodeMfr. PartNumberA1CR2 8150-4086 1 WIRE 22AWG-WHITE TEFLON 1X22 105C 28480 8150-4086A1

ReferenceDesignatorAgilent PartNumberQty Part Description Mfr.CodeMfr. PartNumberA1U17-U18 1820-3631 2 IC COMPARATOR CMOS/HCT MAGNITUDE 8-BIT 27014 MM

ReferenceDesignatorAgilent PartNumberQty Part Description Mfr.CodeMfr. PartNumberTERMINAL MODULE(See Figure 3-2)A3 E1346-66510 1 THERMNL MODULE PC 284

Table 3-4. Agilent E1346A Code List of Manufacturers Mfr.CodeManufacturer’sNameManufacturer’sAddressZipCode01295 TEXAS INSTRUMENTS INC DALLAS TX US

Mechanical Parts LocatorsFigures 3-1 and 3-2 show locations of selected mechanical parts for theAgilent E1346A Single Ended Relay Multiplexer. See the

Agilent 75000 Series B Service DocumentationSuggested Sequence to Use ManualsManual DescriptionsInstallation and Getting Started Guide.

Figure 3-2. Terminal Block Mechanical Parts3-8 Replaceable Parts

4ServiceIntroduction This chapter contains service information for the Agilent E1346Amultiplexer. Also included are troubleshooting, repair, and maint

Agilent E1346AMultiplexerDescriptionThe Agilent E1346A 48-Channel Single Ended Relay Multiplexer consistsof an E1346A component assembly (E1346-66201)

Figure 4-1. Agilent E1346A Block DiagramService 4-3

Troubleshooting TechniquesTo troubleshoot a relay multiplexer problem you must first identify theproblem and then isolate the cause of the problem to

NOTESee the Agilent E1346A Single Ended Relay Multiplexer User’s Manual forinformation on logical address and IRQ settings. If there are no apparent

Table 4-3. TroubleshootingChannel Number Channel Relay Tree Relay Channel RelayDriver/Decoder00 K0K90U1, U3801 K102 K203 K304 K405 K506 K607 K708 K0K9

Repair and Maintenance GuidelinesThis section provides guidelines for repairing and maintaining the AgilentE1346A Single Ended Relay Multiplexer inclu

Component Locators andSchematicDiagrams Table 4-4 lists Component Locator Diagrams and Schematic Diagrams forthe Agilent E1346A relay multiplexer. Tab

Appendix AVerification Tests - C ProgramsFunctionalVerificationTestThis program is designed to do the Functional Verification Test foundin Chapter 2 -

What’s in this ManualManual Overview This manual shows how to service the Agilent E1346A Single Ended Relay Multiplexer. Consult theAgilent E1346A Us

PerformanceVerificationTestThis program is designed to do the Performance Verification Test foundin Chapter 2 - Verification Tests.NOTEThese programs

/*---------------Measure Protection Resistors ---------------* / printf ("\ n\ nMeasure Protection Resistors R38 - R43"); printf ("\

if (result[i] < 0) result[i] = 0;if (result[i] > 2.0) printf ("\n*** Resistance for Channel %u HI path is 2.0 Ohms*** %If", i, resu

for (i = 0; i <= 2; i++){iprintf (id, "CLOS (@°/0u)\ n", j); iprintf (dm, "TRIG SGL\ n");iscanf (dm, "%lf", &valu

iscanf (dm, "%t", cr);resultl[1][3] = valuel[1][3] - R[39] - R[42]; iprintf (id, "open (@%u)\ n", j);if (result1[1][3] < 0) r

Example: DCIsolation TestThis example performs DC Isolation Tests for HI to Chassis, HI to LO,and HI to GU (Guard)./* DC Isolation Test E1346A */# inc

/*...HI to GUARD...*/printf ("\ n\ nConnect DMM HI and LO to E1346A COMMON HI and COMMON G"); getchar ();iprintf (dm, "TR

ContentsChapter 1 - General InformationIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3 - Replaceable PartsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1General InformationIntroduction This manual contains information required to test, troubleshoot, and repairthe Agilent E1346A Single Ended Relay Mult