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- Keithley Applications
- Posts: 1601
- Joined: October 15th, 2010, 10:35 am
- Country: United States
When using the rear inputs and taking signals from one of the 77xx switch cards, only the cards that have dedicated amps channels will be able to connect your current into the Amps terminal. Those dedicated amps channels also provide pathway completion when signal is not being routed through the internal amp meter. If they did not have pathway completion, then there would be open circuit (no current) unless actively measuring the current.
If your 77xx card does not have any amps channels, consider using a small shunt resistor in series with your current. Connect a volts channel across the shunt resistor and get your current from V/R.
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