National Instruments SCXI-1160 User Manual

Also see for SCXI-1160: Getting started Getting started guide Getting started guide Instructions for safe use

Contents

National Instruments SCXI-1160 User Manual Manual pdf 21 page image

Chapter 2 Configuration and Installation© National Instruments Corporation 2-5 SCXI-1160 User ManualThe jumpers are used as follows:• Jumper W1 connects a pullup resistor to the SERDATOUT signal on the rear signalconnector.• Jumpers W2, W3, and W4 select whether the SCXI-1160 is to be connected to a DIOboard or to an MIO board. If nothing is cabled to the rear signal connector of theSCXI-1160, the position of these jumpers is irrelevant.• Jumper W5 carries the SCXIbus MISO line, after buffering, to the SERDATOUT signalon the rear signal connector.Further configuration of the board is software controlled and will be discussed later in thischapter.Jumper ConfigurationAll five jumpers on the SCXI-1160 are for digital communication between the data acquisitionboard and the SCXI-1160 module. Only one module per chassis is connected to the dataacquisition 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 theSCXI-1160 and the data acquisition board. Jumpers W2, W3, and W4 indicate to the modulewhat type of data acquisition board is to be connected to its rear signal connector.Jumper W1Position 1 connects a 2.2 kΩ pullup resistor to the SERDATOUT line. This is the factory-defaultsetting. Position 3 does not connect the pullup resistor to the SERDATOUT line.Jumper W5Position 1 connects the SCXIbus MISO line, after buffering, to the SERDATOUT pin of the rearsignal connector. This is the factory-default setting. In this setting, along with the proper settingof jumper W1, the data acquisition board can read the Module ID Register or the Status Registerof the SCXI-1160. See the Timing Requirements and Communication Protocol section later inthis chapter, and Chapter 4, Register Descriptions, for information on reading the Module IDRegister and the Status Register. See Appendix E, SCXI-1160 Cabling, for the pin equivalencesof 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 W5If a module is not connected to a data acquisition board, the positions of jumpers W1 and W5 areirrelevant. Jumpers W1 and W5 give the data acquisition board access to the MISO line on thebackplane. You can use the MISO line to read the Module ID Register of modules. NationalInstruments software does not use this ability. You must indicate to the software which module