National Instruments BNC -2140 - Manual (Page 14)

Chapter 3 Signal Connections
BNC-2140 User Manual 3-2 © National Instruments Corporation
+DAC1OUT –DAC1OUT Output +Analog Output Channel 1—This pin supplies the
analog non-inverting output channel 1. This signal
passes through the internal BNC conductor.
–DAC1OUT +DAC1OUT 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 tethered to ground
through a 50
Ω
resistor.
Table 3-1. BNC Analog I/O Connector Signal Descriptions (Continued)
Signal Name Reference Direction Description