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Appendix E: Performance Verification
VX4801 Programmable Digital I/O Module
A–33
e. Send a byte 5 input command to the VX4801 and verify that the DAK
light is on. Then read the data, observe a response of AA, perform a
second read and observe that the VX4801 is again waiting for a DRD
strobe:
set VX4801
(Observe VX4801 DAK light off)
ibwrt "i5"
(Observe DAK light on)
ibrd 100
(Observe AA response)
ibwrt "i5"
ibrd 100
(Observe N response, indicating waiting for DRD)
This completes the VX4801 verification procedure.