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Chapter 2
Configuration and Installation
© National Instruments Corporation
2-5
SCXI-1160 User Manual
The jumpers are used as follows:
•
Jumper W1 connects a pullup resistor to the SERDATOUT signal on the rear signal
connector.
•
Jumpers W2, W3, and W4 select whether the SCXI-1160 is to be connected to a DIO
board or to an MIO board. If nothing is cabled to the rear signal connector of the
SCXI-1160, the position of these jumpers is irrelevant.
•
Jumper W5 carries the SCXIbus MISO line, after buffering, to the SERDATOUT signal
on the rear signal connector.
Further configuration of the board is software controlled and will be discussed later in this
chapter.
Jumper Configuration
All five jumpers on the SCXI-1160 are for digital communication between the data acquisition
board and the SCXI-1160 module. Only one module per chassis is connected to the data
acquisition board, which allows communication with all other modules. On the other modules,
the jumper settings are irrelevant.
The SCXI-1160 has two jumpers, W1 and W5, dedicated for communication between the
SCXI-1160 and the data acquisition board. Jumpers W2, W3, and W4 indicate to the module
what type of data acquisition board is to be connected to its rear signal connector.
Jumper W1
Position 1 connects a 2.2 k
Ω
pullup resistor to the SERDATOUT line. This is the factory-default
setting. Position 3 does not connect the pullup resistor to the SERDATOUT line.
Jumper W5
Position 1 connects the SCXIbus MISO line, after buffering, to the SERDATOUT pin of the rear
signal connector. This is the factory-default setting. In this setting, along with the proper setting
of jumper W1, the data acquisition board can read the Module ID Register or the Status Register
of the SCXI-1160. See the Timing Requirements and Communication Protocol section later in
this chapter, and Chapter 4, Register Descriptions, for information on reading the Module ID
Register and the Status Register. See Appendix E, SCXI-1160 Cabling, for the pin equivalences
of the SCXI-1160 rear signal connector and the data acquisition board I/O connector.
Position 3 disconnects SERDATOUT from the SCXIbus MISO line.
Using Jumpers W1 and W5
If a module is not connected to a data acquisition board, the positions of jumpers W1 and W5 are
irrelevant. Jumpers W1 and W5 give the data acquisition board access to the MISO line on the
backplane. You can use the MISO line to read the Module ID Register of modules. National
Instruments software does not use this ability. You must indicate to the software which module