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E.5
String-C Time Code O/P on P4
Placeholder Content
<CR><LF>
HEX 0A,0D
Q
Quality indicator: “ “ = in-sync, “?” = out-of-sync
HEX 20 (ASCII “ “)
YY
Year: “00”—“99” representing the last two digits of the year
DDD
Day of year: range “001”—“365”
hh
hour: “00”—”23”
mm
minute: “00”—“59”
ss
seconds: “00”—“59”
.000
ASCII “.000”
Example
Interpretation
<CR><LF>? 02 112 12:34:36.000
day 112 of year (20)02,
time: 12:34:36, out-of-sync
N.B. in the above example the three trailing spaces as described in the definition are
invisible.
E.6
String-D Time Code O/P on P4
Tekron-D is IDENTICAL in content to String-B, but the second mark is at the leading
edge of the start-bit of the (<CR>).
Example
Interpretation
<SOH>112:12:34:36?<CR><LF>
day 112, time: 12:34:36, >100uS sync error
About
This code is effectively a combination of String-A and String B. It provides
both year information and a sync indicator field.
Timing
Transmitted once every second. The leading edge of the “start” bit of the
first character, <CR>, is exactly on the second to which the message data
refers.
Comms
9600bd, 8-bit ASCII, no parity
Definition <CR><LF>Q
YY
DDD
hh
mm
ss.000