National Instruments PCI-1200 用户手册
Chapter 3
Signal Connections
© National Instruments Corporation
3-15
The common-mode input range for the PCI-1200 depends on the size of the
differential input signal (V
differential input signal (V
diff
= V
+
in
– V
–
in
) and the gain setting of the
instrumentation amplifier. In unipolar mode, the differential input range is
0 to 10 V. In bipolar mode, the differential input range is –5 to +5 V. Inputs
should remain within a range of –5 to 10 V in both bipolar and unipolar
modes.
0 to 10 V. In bipolar mode, the differential input range is –5 to +5 V. Inputs
should remain within a range of –5 to 10 V in both bipolar and unipolar
modes.
Analog Output Signal Connections
Pins 10 through 12 on the I/O connector are analog output signal pins.
Pins 10 and 12 are the DAC0OUT and DAC1OUT signal pins. DAC0OUT
is the voltage output signal for analog output channel 0. DAC1OUT is the
voltage output signal for analog output channel 1.
is the voltage output signal for analog output channel 0. DAC1OUT is the
voltage output signal for analog output channel 1.
Pin 11, AGND, is the ground-reference point for both analog output
channels as well as analog input.
channels as well as analog input.
The following output ranges are available:
•
Bipolar output
±5 V*
•
Unipolar output
0 to 10 V*
* Maximum load current
±2 mA for 12-bit linearity.