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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
Soft Front Panel Operation 5-89
Probe Expect
Bit 13 through Bit
8
‘7’
21
‘8’
3F
The ASCII characters are in four groups of eight characters and one line per
pattern. A fifth column of four characters is present if flags and probe expect is
included.
00000002 00000000 00000000 00000000 8000
00000000 30000000 00000000 00000000 8000
The first column contains the data for channels 8 through 1.
The second column contains the data for channels 16 through 9.
The third column contains the data for channels 24 through 31.
The fourth column contains the data for channels 32 through 25.
The fifth column contains the flag and probe expect data followed by 2 trailing
zeros.
Each column contains the pattern code for eight channels; the least significant
channel data is the right most hex character in each column. In the example
above, all channels are set to ‘Z’ except channel 1 is set to ‘0’ in pattern one. In
pattern two all channels are set to ‘Z’ except channel 16 is set to ‘1’.
Binary
The binary format represents the pattern data as raw binary data. The pattern
data is stored in four sequential 32 bit blocks, five if flags and probe expect are
included. The block order is listed below.
Table 5-74: Binary Block Format
Block Number
Contents
1
Channel 8 through 1
2
Channel 16 through 9
3
Channel 24 through 17
4
Channel 32 through 25
5
Flags/probe expect
In blocks one through four, each 32 bit value contains eight pattern codes. The
pattern code for each channel requires four bits. The channel mapping for each
block is from the lowest channel to the highest channel, i.e., bits 0-3 are channel
1 in block 1, bits 4-7 are channel 2 in block 1, etc.
In block five, each 32 bit value contains the flag codes and the probe expect.
The flag code for each pattern requires two bits. Bits 15 and 14 contain the flag
code and bits 13 through 8 contain the probe expect code..
Table 5-44 lists the binary value/pattern code translation.