Agilent Technologies E1343A Manual de servicio descargar pdf (Pagina 27)

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

2. Measure Channel 00 HI Resistance

– Send *RST to multiplexer

– Send CLOS (@nn00) to close chan 00, where nn = card #

– Trigger the DMM with TRIG SGL and note reading

– Send OPEN (@nn00) to open channel 00

– Subtract measured value of R20 from DMM reading

– Enter the result in Table 2-2 for Channel 00 HI

3. Repeat for Channels 01 - 07 HI and Channel 90 HI

– Repeat steps 1 and 2 for channels 01 - 07 HI and 90 HI

– Use CLOS (@nncc) and OPEN (@nncc), where nn =

card # and

cc = channel # (omit leading zeroes in nn)

– For Channel 90 HI, subtract combined value of R20 + R26

Ch 00 - 07 and 90

LO Measurements

1. Make Hardware Connections

– Turn mainframe power OFF

– Connect DMM leads as shown in Figure 2-4

– Turn mainframe power ON

2. Measure Channel 00 LO Resistance

– Send *RST to multiplexer

– Send CLOS (@nn00) to close chan 00, where nn = card #

– Trigger the DMM with TRIG SGL and note reading

– Send OPEN (@nn00) to open channel 00

– Subtract measured value of R21 from DMM reading

– Enter the result in Table 2-2 for Channel 00 LO

Figure 2-3. Ch 0-7 and 90 HI Measurements Connections

Chapter 2 Verification Tests 25

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Agilent Technologies E1343A Manual de servicio Pagina 27