TEK-TCG 01-G-Manual-v6-052021
P a g e
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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
13
Delimiter, ASCII [:] (hex 3A)
14 – 15
Second of Minute in ASCII, 00-60
16
Delimiter, ASCII [.] (hex 2E)
17 – 23
Fraction of Second in ASCII (100’s of nanoseconds), 0000000-9999999
24
Quality Indicator. Codes are:
ASCII [space] (hex 20) if receiver locked, sub-100 ns Output accuracy
ASCII [?] (hex 3F) if receiver unlocked for more than 1 minute
ASCII [*] (hex 2A) if receiver in alarm mode – antenna fail
25– 27
Outage Indicator – [000-999] Hours since receiver was last locked to GNSS
signals. Becomes non-zero one hour after loss of lock. Resets to zero when
lock is re-acquired.
28
Delimiter, ASCII [#] (hex 23)
29
Number of Time-Tag Channel in ASCII, 1-2
Pr command: Repeat last Tag Sent
The Pr command invokes a Pr response that contains a single time-tag record – the same data
that was sent in response to the last Pt command.
Command (7 bytes [0-6]):
Transmitted format:
@@Pr”
<
CR
><
LF
>
Response (33 bytes [0-32]): Received format:
@@Pr
{26 data bytes}{cs}<
CR
><
LF
>
Data format is identical to
Pt
data format above