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页码 34
8
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 National Instruments Corporation
Figure 6.  Crouzet 16 Module Backplane Jumper Locations
Figure 7.  Crouzet 24 Module Backplane Jumper Locations
Note
The Crouzet 32 module backplane has no position on the backplane for either a 
fuse or jumper. You must add a power supply fuse elsewhere before connecting the 
power. Use a fuse that is suitable for your application.
SSR Module Installation
You can install the SSR modules by plugging each module into one of the 
positions on an SSR backplane. They are keyed so they cannot be inserted 
incorrectly. Many DAQ devices require that all DIO lines in a port be 
configured either for input or output. In these cases make sure you install 
the same type of SSR module, input or output, for each line in the port.
You can mix input and output SSR modules on the mounting rack only if 
you connect them to different I/O ports or you use a DAQ device that allows 
mixed line directions within a port. Do not attach input modules to output 
lines under any circumstances or you can damage the SSR modules or the 
DAQ device.
LEDs
Each module position of an SSR backplane has a status LED to show the 
status of the SSR module logic line. For input modules, the LED is on when 
the load voltage is within the specified range of the SSR module. For the 
1
External Power Jumper
2
DAQ Device Power Jumper
3
Not Used
1
External Power Jumper
2
DAQ Device Power Jumper
3
2
1
1
2