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Chapter 3 System Overview
Measurement Input
Scanning With External Instruments
If your application doesn't require the built-in measurement capabilities
of the HP 34970A, you can order it without the internal DMM . In this
configuration, you can use the HP 34970A for signal routing or control
applications. If you install a multiplexer plug-in module, you can use the
HP 34970A for scanning with an external instrument. You can connect
an external instrument (such as a DMM ) to the multiplexer COM terminal.
H
L
H
L
Input
Channels
H
L
To control scanning with an external instrument, two control lines are
provided. When the HP 34970A and the external instrument are properly
configured, you can synchronize a scan sequence between the two.
GND
Channel Closed OUT
HP 34970A
64
Common Terminals
(COM)
H
L
Ext Trig IN
VM Complete OUT
Ext Trig IN
External DMM
External DMM
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