Configuration and Installation
Chapter 2
SCXI-1100 User Manual
2-4
© National Instruments Corporation
Position 3 disconnects SERDATOUT from the SCXIbus MISO line.
Jumper W9
On Revision C and later modules, position 1 connects a 2.2 k
Ω
pullup resistor to the
SERDATOUT line. Position 3 does not connect the pullup resistor to the SERDATOUT line.
On Revision A and B modules, do not connect jumper W9.
Using Jumpers W5 and W9
If the SCXI-1100 is not cabled to a data acquisition board, the positions of these jumpers do not
matter, so leave them in their factory-default positions (both in position 1).
If the SCXI-1100 is cabled to a data acquisition board, and the SCXI chassis that the SCXI-1100
is in, is the only SCXI chassis cabled to that data acquisition board, leave the jumpers in their
factory-default positions (both in position 1).
If the SCXI-1100 is cabled to a data acquisition board, and there are multiple SCXI chassis
cabled to that data acquisition board with shielded cables (you are using SCXI-1346 shielded
cable multichassis adapters), leave the jumpers in their factory-default positions (both in position
1).
If the SCXI-1100 is cabled to a data acquisition board, and there are multiple SCXI chassis
cabled to that data acquisition board with ribbon cables (you are using SCXI-1350 multichassis
adapters), leave jumper W5 in its factory-default position (position 1). On all but one of the
SCXI-1100s that are cabled to the data acquisition board, move jumper W9 to position 3. It does
not matter which of the SCXI-1100 modules that are cabled to the data acquisition board has
jumper W9 set to position 1. If you have different types of modules cabled to the data
acquisition board, those different modules will have jumpers similar to W5 and W9 of the SCXI
1100. Set those jumpers on the different modules using the same method described here for the
SCXI-1100.
On Revision A and B SCXI-1100s, jumper W9 is not used. You set jumper W5 as explained in
the cases above, except in the case of a multiple chassis ribbon-cable system. In a multichassis
ribbon-cable system with Revision A and B SCXI-1100s cabled to the data acquisition board,
you can access the MISO line in only one chassis. Pick one of the chassis that has the
SCXI-1100 cabled to the data acquisition board. Set jumper W5 on the SCXI-1100 to position 1.
On the SCXI-1100s that are in the other chassis and cabled to the data acquisition board, set
jumper W5 to position 3. Notice that you will only be able to access digital information from the
chassis that has the SCXI-1100 with jumper W5 set to position 1.
Jumper W11 (Revision A and B Modules Only)
On Revision C and later modules, jumper W11 does not exist. SLOT0SEL* is always buffered
to the INTR* line.
On Revision A and B modules, position A connects, after buffering, SLOT0SEL* to the
SCXIbus INTR* line. Do not change the factory setting, position A. In this setting, the data
