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Model T940 User Manual
Publication No. 980938 Rev. K
Soft Front Panel Operation 5-90
Astronics Test Systems
ASCII String
The ASCII string format represents pattern data as viewable ASCII strings, one
character per channel, 32 characters per line (34 if flag and probe data are
included). Each character is one of the pattern codes listed in Table
5-44. The following example lists two patterns.
aZ000RRRRRRRRRRRRRRRRRRRRRRRRRRRRm
bCRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRn
The flag code will be the first character followed by channel 1 through channel 32
and ending with probe expect.
In this example, pattern one has:
•
Both flags set (‘a’)
•
Channel 1 disabled (‘Z’)
•
Channel 2 through channel 4 driven low (‘0’)
•
Channel 5 through channel 32 repeating the previous state (‘R’)
•
Probe expect low glitch (‘m’)
Pattern two has:
•
BERREN flag set (‘b’)
•
Channel 1 enabling the CRC (‘C’)
•
Channel 2 through channel 32 repeating the previous state (‘R’)
•
Probe expect low middle (‘n’)
Editing Waveforms
Up to four waveforms can be defined and output during a pattern for generating
UUT handshake or clock stimulus. The first four waveforms are enabled per
sequence step and they replace certain Phase/Window signals as mapped
below:
•
Waveform 1 – Mapped to Phase 4
•
Waveform 2 – Mapped to Window 4
•
Waveform 3 – Mapped to Phase 3
•
Waveform 4 – Mapped to Window 3
Waveforms 1-4 can be programmed to generate complex waveforms with as
many transitions that can fit in the pattern period.
The last two waveforms (Waveform 5 and Waveform 6) are not mapped to any of
the phase or window signals but are limited to one or two pulses per pattern.
The waveform output repeats for every pattern in the sequence step.
All waveforms can be output on any AUX I/O Channel. Waveform 1 and
Waveform 3 can also be output on any channel.
Access this panel from the menu bar:
Edit > Data Sequencer x> Waveforms
.