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Byte #
Description (Data bytes only, bytes 4-29 in received message)
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 14 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-
event buffer when the Pc command was received. The event buffer is then cleared.
Command (7 bytes [0-6]):
Response (10 bytes [0-9]):
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.
queue is empty, the Pt response is a null time tag. (ASCII [0] characters in all fields except
delimiters).
Command (7 bytes [0-6]):
Response (33 bytes [0-32]):
Byte #
Description (Data bytes only, bytes 4-29 in received message)
4
Day of Year in ASCII, 001 to 366
7
Delimiter, ASCII [:] (hex 3A)
8 9
Hour of Day in ASCII, 00-23
10
Delimiter, ASCII [:] (hex 3A)
11 12
Minute of Hour in ASCII, 00-59
TEK-TCG 01-G-Manual-v5-092016
© 2016 by Tekron International Limited. All Rights Reserved. All trademarks are the property of their respective holders. The
information in this document is provided for informational use only and is subject to change. For further information or support, go to
www.tekron.com.
Transmitted format:
Received format:
ands will result in successive time tag data being retrieved. If the
Transmitted format:
Received format:
P a g e
| 19
@@Pc3<CR><LF>
@@Pc{3 data bytes}{cs}<CR><LF>
@@Pt$<CR><LF>
@@Pt{26 data bytes}{cs}<CR><LF>
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