Chapter 2 Configuration and Installation
© National Instruments Corporation 2-3 SCXI-1120/D User Manual
The jumpers are used as follows:
• Fixed jumpers
– On Revision A and B SCXI-1120 modules, jumper W42 is unused
and should not be connected.
– Jumper W45 is reserved and should not be reconfigured.
– On Revision A and B SCXI-1120 modules, jumper W44 carries
the SLOT0SEL* signal from the rear signal connector, after
buffering, to the SCXIbus INTR* line and should be left in the
SCXI-1120 factory-default position (position 1). On all
SCXI-1120D modules and on Revision C and later SCXI-1120
modules, jumper W44 does not exist.
Note The revision letter is located on the National Instruments label located on the side of
each SCXI-1120/D module. The revision letter is found in the part number and is the letter
found in that part number.
• User-configurable jumpers
– Jumper W43 carries the SCXIbus MISO line, after buffering, to
the SERDATOUT signal on the rear signal connector.
– On all SCXI-1120D and on Revision C and later SCXI-1120
modules, jumper 42 connects a pullup resistor to the
SERDATOUT signal on the rear signal connector.
– Jumper W46 configures the guard, the analog output ground, and
enables the NRSE mode.
– Jumpers W1 through W8 configure the first-stage gain of channels
0 through 7, respectively.
– Jumpers W9 through W16 configure the second-stage gain of
channels 0 through 7, respectively.
– Jumpers W17 through W24 configure the first-stage filtering of
input channels 0 through 7, respectively.
– Jumpers W25 through W40 configure the second-stage filtering of
input channels 0 through 7, respectively.
– Jumper W41 directly connects the temperature sensor to the rear
signal connector. To do so, set jumper W46 in the AB-R2 or
AB-R0 position first.
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