Agilent Technologies E1356A Servisní příručka stáhnout pdf (Strana 31)

3. Check Channels Leakage

• Send CLOS(@nn00) to the FET Multiplexer to close channel

00, where nn is card number (typically 01)

• Send TRIG SGL to DMM

• Record the DMM reading in Table 2-1

Positive Polarity, HI to LO, Channels

• Send OPEN (@nn00) to the FET Multiplexer

4. Check Tree Leakage

• Send SCAN:PORT ABUS to the FET Multiplexer to enable the

Tree Switches

• Send CLOS(@nn00) to the FET Multiplexer to close channel

00 and Tree Switch A, where nn is the card number (typically

01)

• Send TRIG SGL to DMM

• Record the DMM reading in Table 2-1

Positive Polarity, HI to LO, Tree A

• Send OPEN (@nn00) to the FET Multiplexer

• Send CLOS(@nn15) to the FET Multiplexer to close channel

15 and Tree Switch B

• Send TRIG SGL to DMM

• Record the DMM reading in Table 2-1

Positive Polarity, HI to LO, Tree B

• Send *RST to the FET Multiplexer

5. Change Polarity

• Turn power supply and mainframe power OFF

• Connect DMM, power supply, and resistor as shown in

Figure 2-7

• Turn power supply and mainframe power ON

• Set power supply output to +10 Vdc ± 0.1 Vdc

6. Repeat Steps 2 through 4

• Record all results in Table 2-1 as

Negative Polarity, HI to LO

Verification Tests 2-13

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 67 68

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Agilent Technologies E1356A Servisní příručka Strana 31