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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Advanced Topics 8-5
Figure 8-3: Configure VXI Triggers DSA Panel
Note: Error and Pass Valid were placed on ECLTRGs. This is necessary for
high Data Rates, >~20 MHz because the TTLTRG bus has a slow recovery
time.
Table 8-1 describes these signals and explains when they are needed:
Table 8-1: Summary of When Specific DRS Signals are Needed
Signal
When needed
Error
Whenever Error needs to be connected/coupled to the
Master Sequencer for Jumping, Halting, Counting or the
Logging of Errors in the EAM.
Pass Valid
Needed whenever Pass Valid Mode is enabled. Error must
also be connected/coupled when Pass Valid is used.
Halted
Allows connected/coupled Sequencers to have their Pattern
Data and Record memories accessible when halted.
DRS Sync
Allows one to detect and create an event that says that that
a connected/coupled Sequencer is out of sync with the
Master Sequencer
Sequence
Reset
Allows a Sequence Reset performed on the Master or any
coupled Sequencer to reset all of the Sequencers coupled
together in a DRS.
Note: on the Execute Panel, this is
simply called Reset.
Master Reset Allows a Master Reset performed on the Master or any
coupled Sequencer to reset all of the Sequencers coupled
together in a DRS.
Note: a Master Reset disables all of the
channel drivers among other things.