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National Instruments Corporation
7
SCXI-1121 Calibration Procedure
Configuring the Gain Jumpers
Each input channel has two user-configurable gain stages. The first-stage
gain provides gains of 1, 10, 50, and 100. The second-stage gain provides
gains of 1, 2, 5, 10, and 20. The SCXI-1121 ships with the first-stage gain
set to 100 (position A) and the second-stage gain set to 10 (position D).
To change the gain setting of a specified channel on the SCXI-1121, refer
to Table 3 for the gain jumper reference designators. Refer to Figure 3 for
the location of the gain jumpers. Move the jumper to the position indicated
in Table 4.
Table 2.
Completion Network Jumpers
Channel
Jumpers
Enable
Completion
Disable Network
(Factory Setting)
0
W1 and W2
1
W17 and
W18
l
2
W27 and
W28
3
W39 and
W40
A B
W2
W1
1 2
3
A B
W2
W1
1 2
3
W1
8
A B
W17
1 2
3
W1
8
A B
W17
1 2
3
W2
8
A B
W27
1 2
3
W2
8
A B
W27
1 2
3
W40
A B
W
3
9
1 2
3
W40
A B
W
3
9
1 2
3
