PTP Translator Manual / December 2014
11
Placeholder
Content
HH
UTC hour: “00” – ”23”
MM
UTC minute: “00” – “59”
55
ASCII “55” (means UTC day of year follows)
DDD
UTC Day of year: “001” – “365”
String-G Time Code O/P
About
This general time string is used predominantly in Europe.
Timing
The string is transmitted once every second, with the leading edge of the “start” bit of the last
<ETX> exactly on the second.
Default Comms
9600 bps, 8-bit ASCII, no parity
Definition
<STX>swhhmmssDDMMyy<LF><CR> <ETX>
Placeholder
Content
s
Clock Status (see below)
w
Day of Week (see below)
hh
hour of day: “00” – ”23”
mm
minute of day: “00” – “60”
ss
seconds: “00” – “59”
DD
day of month: “01” – “31”
MM
month of year: “01” – ”12”
yy
year: “10” – “99”
Clock Status
The s “Clock Status” is an ASCII character in the range 0-9, A-F representing a single hex digit (nibble)
Bits 3
2
1
0
0 No announcement for time change
1 Announcement for time change – active for an hour before
0
Local Standard Time (LST)
1
Daylight Saving Time (DST)
0
0
Time/date invalid – clock is out of sync
0
1
Hold-over mode – running on local Oscillator
1
0
GPS / IRIGB controlled mode
1
1
GPS / IRIGB controlled mode (high accuracy)
Day of Week
The w “Day of Week” is an ASCII character in the range 1-7, 9, A-F representing a single hex digit (nibble)
Bits 3
2
1
0
0
Local Time
1
UTC time
0
0
1 Monday
0
1
0 Tuesday
0
1
1 Wednesday
1
0
0 Thursday
1
0
1 Friday
1
1
0 Saturday
1
1
1 Sunday
Example Interpretation:
<STX>E3123456170410<LF><CR><ETX> High Accuracy Mode, DST, Wed, 12:34:56, 17/4/2010