National Instruments SCXI-1121 Manuel D’Utilisation

© National Instruments Corporation

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Jumpers W3, W19, W29, and W41 configure the first-stage gain 
of input channels 0 through 3, respectively.

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Jumpers W4, W20, W30, and W42 configure the second-stage 
gain of input channels 0 through 3, respectively.

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Jumpers W5, W21, W31, and W43 configure the first-stage 
filtering of input channels 0 through 3, respectively.

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Jumpers W6 and W7, W8 and W9, W10 and W11, and W12 and 
W13 configure the second-stage filtering of input channels 0 
through 3, respectively.

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Jumpers W14 and W15, W22 and W23, W34 and W35, and W46 
and W47 configure the voltage or current mode of operation for 
excitation channels 0 through 3, respectively.

–

Jumpers W16 and W26, W24 and W25, W36 and W37, and W48 
and W49 configure the level of excitation for excitation channels 
0 through 3, respectively.

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Jumpers W1 and W2, W17 and W18, W27 and W28, and W39 
and W40 configure the half-bridge completion network for 
channels 0 through 3, respectively.

Further configuration of the board is software controlled and will be 
discussed later in this chapter.

The SCXI-1121 has three jumpers dedicated for communication between 
the data acquisition board and the SCXIbus. These jumpers are W32, W38, 
and W44.

Position 1 on Revision A and B modules connects, after buffering, 
SLOT0SEL* to the SCXIbus INTR* line. This is the factory-default setting 
and should not be changed. In this setting, the data acquisition board 
controls the SCXIbus INTR* line. See the 

 section later in this chapter, and Chapter 5, 

, for information on the use of the INTR* line. See 

Appendix E, 

, for the pin equivalences of the 

SCXI-1121 rear signal connector and the data acquisition board 
I/O connector.

Position 3 is reserved and should not be used. This position is not explicitly 
marked on the module.