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Chapter 3
Signal Connections
Table 3-1. BNC Analog I/O Connector Signal Descriptions (Continued)
Signal Name
Reference
+AO 1
–AO 1
–AO 1
+AO 1
Figure 3-1 illustrates the pin assignments on the BNC-2140 68-pin
connector.
BNC-2140 User Manual
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Direction
Output
+Analog Output Channel 1—This pin supplies the
analog non-inverting output channel 1. This signal
passes through the internal BNC conductor.
Output
–Analog Output Channel 1—This pin supplies the
analog inverting output channel 1. This signal passes
through the external BNC shell. In SE mode, the
inverting (–) terminal is connected to ground
through a 50 Ω resistor.
3-2
Description
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