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"Expert" frame format – data display system to the detecting unit
D7
D6
D5
D4
0
1
0
1
1
0
1
0
0
1
1
1
address
0
0
0
0
byte
The structure of the following data is defined by the spectrum block
(see the description below). The length of these data is always
equal to 256 bytes regardless of the BLOCK value.
control
– spectrum block number BLOCK defines the structure of the following data (see
(1)
tables below). Given the value of BLOCK, equal from 0 to 7, the corresponding
fragments(blocks)
transmitted. Given the value of BLOCK, equal to 8, the parameters of the obtained
spectrum are transmitted. Given the value of BLOCK, equal to 9, the mode of
spectrum accumulation is switched on/off.
At BLOCK = 0..7
D7
D6
D5
D4
Low byte
High byte
Low byte
High byte
...
Low byte
High byte
Low byte
High byte
D3
D2
D1
D0
0
1
0
1
Byte 55h - start-of-frame character
Byte AAh
1
0
1
0
0
0
0
0
D7...D4– protocol v1.3 character
D7...D0– address of the detecting unit*
1
1
0
1
D7...D0– "
Number of spectrum block BLOCK
number BLOCK.
arithmetical checksum with a carry
of
spectrum
including
D3
D2
D1
D0
Number of pulses in a channel
0+(BLOCK x 128)
Number of pulses in a channel
1+(BLOCK x 128)
Number of pulses in a channel
126+(BLOCK x 128)
Number of pulses in a channel
127+(BLOCK x 128)
" frame code
Expert
128
channels
...
38
(1)
(256
bytes)
each
are
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