TEK-TCG 01-G-Manual-v6-052021
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Byte #
Description (Data bytes only, bytes 4-29 in received message)
21
Oscillator Correction. Most significant 4 bits of 16-bit D/A converter used
for oscillator control. Range is ASCII [@] to [O] (hex 40 to hex 4F)
22
Oscillator Correction. More significant 6 bits of 16-bit D/A converter used
for oscillator control. Range is ASCII [@] to [del] (hex 40 to hex 7F)
23
Oscillator Correction. Least significant 6 bits of 16-bit D/A converter used
for oscillator control. Range is ASCII [@] to [del] (hex 40 to hex 7F)
23
Frequency Error. Local Oscillator frequency offset as compared with GNSS
received signal. In ASCII, ±00000-99999 referenced to 1E-12
Notes concerning the Ps command:
*
An ASCII [space] is transmitted if there is no alarm condition present
1.
The TCG 01-G can track up to 32 satellites simultaneously. The message limitation of 9 is
to retain compatibility with older equipment using this message format.
2.
Mode = 1: Satellite search, 2D/3D fix.
Mode = 2: GNSS Automatic site survey.
Mode = 3: GNSS position hold (most accurate time)
Pc command: Clear Time-Tag Buffer
The Pc command invokes a
Pc
response that returns the number of time-tags that were in TCG
01-G’s event buffer when the
Pc
command was received. The event buffer is then cleared.
Command (7 bytes [0-6]):
Transmitted format: @@Pc3<CR><LF>
Response (10 bytes [0-9]): Received format:
@@Pc{3 data bytes}{cs}<CR><LF>
Byte #
Description (Data bytes only, bytes 4-6 in received message)
4 – 6
ASCII [000-512, 999] Number of time-tag entries in TCG 01-G queue before
reset.
Pt command: Get next Time-Tag
The Pt command invokes a
Pt
response that contains a single time-tag record – the oldest one
in the data queue. Successive “Pt” commands will result in successive time tag data being
retrieved. If the queue is empty, the
Pt
response is a null time tag. (ASCII [0] characters in all
fields except delimiters).
Command (7 bytes [0-6]):
Transmitted format:
@@Pt$
<
CR
><
LF
>
Response (33 bytes [0-32]): Received format:
@@Pt
{26 data bytes}{cs}<
CR
><
LF
>
