Agilent Technologies 75000 B Series Service Manual page 35

Fet multiplexer
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LO to Chassis Leakage
1.
Make Hardware Connections
• Turn power supply and mainframe power OFF
• Connect DMM, power supply, and resistor as shown in
Figure 2-10
• Turn power supply and mainframe power ON
Figure 2-10. Positive LO to Chassis Leakage Connections
2.
Check Direct Terminals Leakage Current
• Send *RST to FET Multiplexer
• Send TRIG SGL to DMM
• Record the DMM reading in Table 2-1
Positive Polarity, LO to Chassis, Direct
• The DMM measurement should be less than 0.010 Vdc.
A measurement out of this range indicates a failure of the
FET Multiplexer.
3.
Check Channels Leakage
• Send CLOS(@nn00) to the FET Multiplexer, where nn is the
card number (typically 01)
• Send TRIG SGL to DMM
Agilent E1300B/E1301B
Verification Tests 2-17

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