Keithley KUSB-3116, Руководство по началу работы

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Wiring Signals
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Connecting Analog Input Signals
The KUSB-3116 module supports both voltage and current loop
inputs. You can connect analog input signals to the module in the
following configurations:
• Single-ended
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Choose this configuration when you want to
measure high-level signals, noise is not significant, the source of
the input is close to the module, and all the input signals are
referred to the same common ground.
• Pseudo-Differential
−
Choose this configuration when noise or
common-mode voltage (the difference between the ground
potentials of the signal source and the ground of the screw
terminal panel or between the grounds of other signals) exists
and the differential configuration is not suitable for your
application. This option provides less noise rejection than the
differential configuration; however, the number of analog input
channels available is the same as for single-ended configuration.
• Differential
−
Choose this configuration when you want to
measure low-level signals, noise is a significant part of the signal,
or common-mode voltage exists.
This section describes how to connect single-ended,
pseudo-differential, and differential voltage inputs, as well as current
loops, to the KUSB-3116 module.