Chapter 3 Configuring Your SCXI Hardware and Software
© National Instruments Corporation 3-11 Getting Started with SCXI
2. Configure the filtering.
♦ SCXI-1120 Filter Jumpers
Two-stage filtering is also available on your SCXI-1120 module. The
first stage is located in the isolated section of the input channel,
whereas the second stage is located in the nonisolated section of your
input channel. Two-stage filtering eliminates the noise generated by
the isolation amplifier, producing a higher signal-to-noise ratio.
Furthermore, two filter bandwidths are available, 10 kHz and 4 Hz.
Second-stage 1 A
2 B
5 C
10 D (factory-default
setting for the
SCXI-1120)
20 E (factory-default
setting for the
SCXI-1120D)
Table 3-6. SCXI-1120 Filter Jumper Allocation
Input
Channel
Number
First
Filter Jumper
Second
Filter Jumper
4Hz
(Factory
Default)
10 kHz
4Hz
(Factory
Default)
10 kHz
0 W17-A W17-B W25 W26
1 W18-A W18-B W27 W28
2 W19-A W19-B W29 W30
3 W20-A W20-B W31 W32
Table 3-5. Gain Jumper Positions (Continued)
Gain Setting Jumper Position
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