Agilent Technologies E1355A Manual de servicio

Agilent 75000 Series BAgilent E1351A/52A/53A/57A/58AFET MultiplexersService Manual Enclosed is the Service Manual for the Agilent E1351A/

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

What’s in this ManualManual Overview This manual shows how to service the Agilent E1351A, E1352A, E1353A, E1357A, and E1358A FETMultiplexers. Consult

Table of ContentsChapter 1 — General InformationIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3 — Replaceable partsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1General InformationIntroduction This manual contains information required to test, troubleshoot, and repairthe Agilent E1351A, E1352A, E1353A

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

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

FET Multiplexer DescriptionThe Agilent E1351A, E1352A, E1353A, E1357A, and E1358A FETMultiplexer is an "instrument" in a VXIbus mainframe. A

Agilent E1357ADescriptionThe Agilent E1357A provides up to eight channels of strain gage switching.Strain gage measurements are supported in 1/4 bridg

RecommendedTest EquipmentTable 1-1 lists the test equipment recommended for testing, adjusting, andservicing the FET Multiplexers. Essential requireme

Notify AgilentNotify Agilent and carrier.Figure 1-2. Initial (Incoming) Inspection GuidelinesGeneral Information 1-7

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

Chapter 2Verification TestsIntroduction This chapter describes the verification tests for the Agilent E1351A,E1352A, E1353A, E1357A, and E1358A. The t

FunctionalVerification TestThe Functional Verification Test for the Agilent E1351A, E1352A,E1353A, E1357A, and E1358A FET Multiplexers consists of sen

OperationVerification TestThe procedures in this section are used to provide a high level of confidencethat the FET Multiplexer is meeting published s

re-wire each time the tests are performed. The Agilent E1351A terminalblock and case assembly part number is E1351-80001.Test 2-1: ClosedChannelResist

• Repeat step 3 for channels 01 through 15 • Use CLOS (@nncc), where nn is the card number and cc is thechannel numberLO ChannelMeasurements 1. Make

Tree Switch HI ChannelMeasurements 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM as shown in Figure 2-4• Turn mainframe power O

Tree Switch LOChannel Measurements 1. Make Hardware Connections• Turn mainframe power OFF• Connect DMM as shown in Figure 2-5• Turn mainframe power O

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

Example: ClosedChannel ResistanceTestThis example performs a closed channel resistance test of all measurementpaths. If a FET on resistance is >3.1

370 OUTPUT @Dmm;"TRIG SGL"380 ENTER @Dmm;Value390 IF Value<10000 THEN400 CLEAR SCREEN410 PRINT "Measurement indi

780 PAUSE790 OUTPUT @Dmm;"PRESET NORM;FUNC OHM"800 OUTPUT @Mux;"*RST"810 !820 ! Check for stuck tree switches8

Typical ResultClosed channel resistance measurement resultsChannel 0 HI 989 Ohms LO 1004 OhmsChannel 1 HI 991 Ohms LO 979 OhmsChannel 2 HI 1001 Ohms L

Test 2-2: LeakageTestThe test verifies the input impedance by measuring the voltage drop across aknown resistor in series with the input impedance. Le

3. Check Channels Leakage • Send CLOS(@nn00) to the FET Multiplexer to close channel00, where nn is card number (typically 01)• Send TRIG SGL to DMM•

HI to Chassis Leakage 1. Make Hardware Connections• Turn power supply and mainframe power OFF• Connect DMM, power supply, and resistor as shown in F

3. Check Channels Leakage • Send CLOS(@nn00) to the FET Multiplexer, where nn is thechannel number (typically 01)• Send TRIG SGL to DMM• Record the D

• Send CLOS(@nn15) to the FET Multiplexer to close channel15 and tree B• Send TRIG SGL to DMM• Record the DMM reading in Table 2-1 Positive Polarity,

LO to Chassis Leakage 1. Make Hardware Connections• Turn power supply and mainframe power OFF• Connect DMM, power supply, and resistor as shown in

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

• Record the DMM reading in Table 2-1 Positive Polarity, LO to Chassis, Channels• Send OPEN (@nn00) to the FET Multiplexer4. Check Tree Leakage Curre

Example: LeakageCurrent TestThis example performs a leakage test from HI to LO, HI to Chassis, and LOto Chassis. If the leakage is too high (caused by

170 PRINT " 1. Turn mainframe, power supply, and DMM power OFF" 180 PRINT " 2. Connect GPIB cable between mainframe and DMM

580 END IF 590 OUTPUT @Mux;"OPEN (@"&Cc$&"00)" 600 OUTPUT @Mux;"CLOS (@"&Cc$&"15)" 61

Typical ResultPositive polarity leakageDirect Channels Tree A Tree BDIRECT HI to DIRECT LO 0.0021 Vdc 0.0015 Vdc 0.0020 Vdc 0.0018 VdcHI to CHASSIS 0.

Leakage Test Conditions:• DC Volts function, 100 mV range• 90 day specifications• Worst case reading = 0.01 V• Resistor value: 99 kΩ < R < 101

Table 2-1. Performance Test Record (Page 1 of 2)General InformationTest Facility:Name _____________________________________Address __________________

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

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

Chapter 3Replaceable PartsIntroduction This chapter contains information to order replaceable parts for the AgilentE1351A, E1352A, E1353A, E1357A, and

DECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Table 3-1. FET Multiplexer Replaceable Parts ReferenceDesignatorAgilent PartNumberQty Part Description Mfr.CodeMfr. PartNumberAgilent E1351AA1 E1351-

ReferenceDesignatorAgilent PartNumberQty Part Description Mfr.CodeMfr. PartNumberE1351-66201 1 16-CHANNEL FET MULTIPLEXER(See figure 3-1)28480 E1351-6

Table 3-4. FET Multiplexers Reference Designators FET Multiplexers Reference DesignatorsA... assembly

Mechanical Parts LocatorsFigure 3-1 shows the mechanical replaceable parts on the componentassembly (Agilent PN E1351-66201). Figure 3-2 shows the mec

Figure 3-2. Terminal Case Assembly Replaceable Parts3-6 Replaceable Parts

Chapter 4ServiceIntroduction This chapter contains service information for the Agilent E1351A, E1352A,E1353A, E1357A, and E1358A FET Multiplexers. Als

Figure 4-1. Agilent E1351A Simplified Switch Diagram4-2 Service

Figure 4-2. Agilent E1352A Simplified Switch DiagramService 4-3

Figure 4-3. Agilent E1353A Simplified Switch Diagram4-4 Service

Figure 4-4. Agilent E1357A/58A Simplified Switch DiagramService 4-5

DECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

for use with the Agilent E1357A and Agilent E1358A Strain Gage FETMultiplexers. Repair Strategy Agilent Technologies recommends replacement of the en

Making VisualChecksVisual checks for the FET Multiplexers include the following. See Table 4-2 for typical checks.• Check switches/jumpers• Check for

Repair and Maintenance GuidelinesThis section provides guidelines for repairing and maintaining the FETMultiplexer including:• ESD precautions• Solder

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

PerformanceVerificationTestsThese programs are designed to do the Performance Verification Testsfound in Chapter 2 - Verification Tests.NOTEThese prog

/*...Measure Closed Channel Resistance...*/ iprintf (id, "*RST\n"); iprintf (dm, "PRESET NORM;TRIG

printf ("\n\nMeasurements complete for Channel HI and LO"); printf ("\nPress ENTER for Tree Switch measurements"); getchar ();

if (tree[i][j] > 3100) { if (j == 0) printf ("\n*** Resistance for A Tree Switch is 3.1 kOhms"); else

Example: LeakageCurrent TestThis example performs a leakage test from HI to LO, HI to Chassis, and LOto Chassis. If the leakage is too high (caused b

if (i == 0) { printf ("\n2. Connect DMM input HI leads to Power Supply HI"); printf ("\n3. Connect DMM input LO leads

DECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

if (result[i][1] > .01) printf ("\n\n***** Channel path leakage out of tolerance %6.4lf Volts *****",result[i][1]); /*...

printf ("\n\n-------------------------------------------------------------"); printf ("\n Negative Polarity Leaka

A-10 Example C Programs

DECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

DECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 viiManufacturer’s Name:Agilent Te