Agilent Technologies E1346A Instrukcja Obsługi Pobierz pdf (Strona 23)

Table 2-1. Measured Protection Resistor Values

Resistor

Measured Value (Ω)

Resistor

Measured Value (Ω)

R38

R39

R40

________________

R41

R42

R43

________________

Chs 00-47 and 90-92

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 R43 from DMM reading

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

3. Repeat for Channels 01 - 47 HI

• Repeat step 2 for channels 01 - 47 HI

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

card # and cc = channel # (omit leading zeroes in nn)

Figure 2-3. Ch 00-47 HI Measurement Connections

Verification Tests 2-5

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 65 66

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Agilent Technologies E1346A Instrukcja Obsługi Strona 23