Chapter 3
Configuring Your SCXI Hardware and Software
©
National Instruments Corporation
3-7
4.
Add current-loop receivers, if necessary. Process-current resistor
packs are available from National Instruments. Refer to Input Filtering
and Current-Loop Receivers in the SCXI-1100 User Manual for
detailed information about filter pads and current loop receivers.
SCXI-1102/B/C Module
The SCXI-1102/B/C is a 32-channel amplifier module designed for
measuring thermocouples and other low-bandwidth signals. Each of the
32 channels includes input protection circuitry to 42 VAC
peak
and a
software-selectable gain of 1 or 100. The SCXI-1102, SCXI-1102/B, and
SCXI-1102/C have lowpass filters with cutoff frequencies of 2 Hz, 200 Hz,
and 10 kHz respectively. The SCXI-1102 works only in multiplexed mode
and drives a single analog input channel on the DAQ device (channel 0).
The SCXI-1102/B/C is software configurable and contains no jumpers.
Table 3-3.
SCXI-1100 PGIA Output Referencing Jumper Configuration
Jumper
Description
Configuration
A-R0R1—Parking position. Use this position for
MIO or AI DAQ devices in DIFF input mode
(factory-default position).
AB-R0—Connects the PGIA reference to data
acquisition analog ground, pins 1 and 2, of the rear
signal connector. Use this position for DAQ devices
with SE inputs, such as the Lab and 1200 devices,
or MIO and AI devices in RSE mode.
AB-R2—Select this position for AI or MIO devices
in NRSE mode.
W10
A
B
R0
R1
R2
A
B
R0
R1
R2
A
B
R0
R1
R2
