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"Expert1" frame format –data display system to detecting unit
D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
0
1
1
0
1
0
1
0
0
1
1
1
0
0
address
1
0
0
0
1
0
byte
The structure of the following data is determined by spectrum block number BLOCK. (see
description below). The length of these data is always equal to 2 bytes regardless of
the BLOCK value.
Control
– spectrum block number BLOCK defines the structure of the following data.
(1)
Given the value of BLOCK, equal 0, the query is sent for corresponding full
spectrum including 1024 channels and parameters of the obtained spectrum. Given
the value of BLOCK, equal to 9, the mode of spectrum accumulation is switched
on/off.
Given BLOCK = 0 – the value of the next two bytes is ignored.
Given BLOCK = 9
D7 D6 D5 D4 D3 D2 D1 D0
1
0
0
0
1
1
0
0
0
0
0
0
– the counter of spectrum accumulation period is reset and spectrum accumulation
(1)
starts.
"Expert1" frame format - detecting unit to data display system
D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
0
1
1
0
1
0
1
0
0
1
1
1
0
0
address
1
0
0
0
1
1
Byte
The structure of the following data is determined by spectrum block number BLOCK. (see
tables below). The length of these data is always equal to 2069 bytes regardless of the
BLOCK value.
Control
(1)
– spectrum block number BLOCK defines the structure of the following data (see
tables below). Given the value of BLOCK, equal 0, the corresponding full spectrum
including 1024 channels and parameters of the obtained spectrum are transmitted.
Given the value of BLOCK, equal to 9, the mode of spectrum accumulation is switched
on/off.
0x8B – Expert1 (spectrum, DER, temperature, error)
0
1 Byte 55h - start-of-frame character
Byte AAh
1
0
0
0
D7...D4–protocol v1.3 character
D7...D0 – detecting unit's address
1
1
D7...D0–"Expert1" frame code
Spectrum block number BLOCK
arithmetical checksum with a carry
0
0
a = 1 – accumulated spectrum resetting
0
a
0
1 Byte 55h - start-of-frame character
Byte AAh
1
0
0
0
D7...D4–protocol v1.3 character
D7...D0 – detecting unit's address
0
1
D7...D0–"Expert1" frame code
Spectrum block number BLOCK
arithmetical checksum with a carry
(1)
Password (0x8C)
(1)
40
(1)
;
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