©
National Instruments Corporation
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1
Routing Signals with
Your NI 2565
This manual describes the electrical and mechanical aspects of the
NI 2565 general-purpose 16-channel 1form A mechanical relay switch
card and contains information concerning its installation and operation.
About the NI 2565
This section summarizes the features and operation of the NI 2565 switch
card. Refer to Chapter 2,
, for more complete details. In
addition, refer to Appendix A,
, for detailed specifications of
the switch card.
The NI 2565 is a 16-channel general purpose relay switch card. The
NI 2565 uses single-pole single-throw (also known as 1form A) relays. The
board can switch voltages up to 250 VAC and 125 VDC, and currents up to
7 A AC and 5 A DC. You can use the National Instruments NI-SWITCH
software included with your kit to configure and operate the NI 2565
switch card.
Triggers
Two triggers are used to handshake the NI 2565 switch with other PXI
instruments. The Scanner Advanced trigger indicates when the card has
closed all the necessary switches for the next scan and the switches have
settled, or debounced.
The External Trigger Input trigger is sourced by another instrument or by
software, and causes the NI 2565 to advance to the next entry in the scan
list. The triggers can be routed to any of the PXI TTL triggers or to the PXI
star trigger. If no external trigger input is available, you can have the
software trigger the NI 2565 to advance to the next entry in the scan list.
Refer to Chapter 2,
, for more information on triggers.