National Instruments NI PCIe-8361 User Manual

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© National Instruments Corporation
D-1
D
Using The Trigger Ports On The 
VXI-8360T
The NI VXI-8360T allows you to extend the 8 TTL backplane triggers and 
CLK10 between chassis through convenient front panel connectors. Each 
trigger and the CLK are independently configurable as either inputs or 
outputs of the frame. The trigger bus is connected in a daisy chain topology 
and can support up to six (6) devices with a total of 19 m of cables.
Cautions
The trigger bus uses the MXI-Express x4 cables, however these are not 
MXI-Express x4 ports. Do not connect the trigger ports to a MXI-Express x4 or 
PCI Express x4 device.
The trigger bus may be able to support more devices and/or greater cable lengths, but these 
configurations have not been validated by National Instruments and are not currently 
supported.
Connecting the Trigger Port Cables
When connecting the cables between two devices on the trigger bus, 
always ensure you connect TRIG/CLK PORT A of one device to 
TRIG/CLK PORT B of the second device, or TRIG/CLK PORT B 
of one device to TRIG/CLK PORT A of the second device, as shown 
in Figure D-1. The front panel LED will blink red if the cables are not 
connected correctly. The LED will be lit steady state green if they are 
connected properly.
Note
Trigger bus cables may be removed and inserted while power is on.