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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Specifications 7-5
Recording Type
Un-expanded: Record data at the same
index as the stimulus (will overwrite data
when looping)
Expanded: Records data sequentially. A
separate Record Index Memory stores
information that allows the recorded data
to be re-aligned with the original data.
Error Address Recording
Separate Error Address Record Memory
records where errors occurred in the
Record Memory. Limit: 1K errors.
Record Offset
Used to compensate for round-trip
driver/receiver delay and also cabling
delay to the UUT. Can also be used to
allow windows to effectively close at the
end of the T0Cycle.
Resolution: 1 master clock
Range: 2-63 master clocks
Sequencer Characteristics
General
Sequencers: 2 per Digital Resource
Module
Channels: 32 per sequencer
Modes: Static, Dynamic
Sequence Memory
Sequence Size: 1024 or 4096 Steps
Sequence Loop Counters
Loop Counters: 16
Loop Count can be different each time or
continuous
Loop counters may be nested
Loop counters can be optionally re-
loaded during a burst
Only one can end on a sequence step
Loop Count Range
1-64K or continuous
Subroutine Characteristics
Output one or more Sequence Steps
with or without looping. Cannot be
nested. Has a designated “Return” Step.
Burst Count Range
1-1M or continuous
Jump Types
Conditional or unconditional
Jumps at the end of a sequence step
Vectored (1 of 16 destinations)