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Chapter 4 Signal Connections
© National Instruments Corporation 4-19 6023E/6024E/6025E User Manual
Figure 4-8 shows how to connect a grounded signal source to a channel
configured for NRSE mode.
Figure 4-8.
Single-Ended Input Connections for Ground-Referenced Signals
Common-Mode Signal Rejection Considerations
Figures 4-5 and 4-8 show connections for signal sources that are already
referenced to some ground point with respect to the device. In these cases,
the PGIA can reject any voltage caused by ground potential differences
between the signal source and the device. In addition, with DIFF input
connections, the PGIA can reject common-mode noise pickup in the leads
connecting the signal sources to the device. The PGIA can reject
common-mode signals as long as V+
in
and V–
in
(input signals) are both
within ±11 V of AIGND.
Analog Output Signal Connections
♦ 6024E and 6025E
The analog output signals are DAC0OUT, DAC1OUT, and AOGND.
DAC0OUT and DAC1OUT are not available on the 6023E. DAC0OUT is
the voltage output signal for analog output channel 0. DAC1OUT is the
voltage output signal for analog output channel 1.
V
s
+
+
+
–
–
–
V
m
Measured
Voltage
ACH<0..15>
AIGND
Instrumentation
Amplifier
I/O Connector
AISENSE
V
cm
+
–
Selected Channel in NRSE Configuration
Common-
Mode
Noise
and Ground
Potential
Ground-
Referenced
Signal
Source
PGIA
Input Multiplexers