ADLINK PXI-7921 - Manual (Page 27)

Operation Theorem • 21
connectors, and signals in the dotted-line box represents switch module’s
internal signal.
Figure 8: Available signal sources for Trigger In
Scanner Advanced
After updating the relay pattern, the switch module starts its debounce timer
and waits for the relay contacts to settle. When the debounce time elapses, the
switch module will generate a Scanner Advanced signal to notify the PXI
instruments or external measurement devices that the relay contacts have
settled, and ready to take a new measurement.
The waveform, polarity and pulse width of Scanner Advanced signal can also
be software programmed.
For more information on scanlist configuration, please refer to the software
programming users’ guide.
Figure 9 illustrates the available signal destinations for the Scanner Advanced
signal. Signal names in the solid-line boxes represent the external (physical)
signal on connectors, while signals in the dotted-line boxes represent switch
module’s internal signal.
Figure 9: Available signal destinations for Scanner Advanced
Handshaking protocol
Trigger In Signal
TRG_IN
Trigger Bus [7…0]
Star Trigger In
AUX[2…0]
Software Trigger
Scanner Adv.
Signal
S_ADV
Star Trigger Out
Trigger Bus [7…0]
AUX [2...0]