Symmetricom Z3801A, User Manual

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Chapter 4 Command Listing and Status Information
Z3801A Commands
User’s Guide 4-13
Use the :PTIMe:TCODe:FORMat <format> command to change the
format of this message:
:PTIMe:TCODe:FORMat F1 — to select “T1”
:PTIMe:TCODe:FORMat F2 — to select “T2”
:PTIMe:TCODe:FORMat? queries the current setting. It returns an
ASCII string, either “F1” or “F2”.
T1 is the default time code format.
T1 or T2 is a literal, two-character header that identifies the format of
the message.
[T1 format]
#H is a literal, two-character prefix of the unsigned hexadecimal
number that follows.
xxxxxxxx is the date and time of the next 1 PPS pulse, referenced to
GPS Time, expressed as the number of seconds that have
elapsed since January 6, 1980.
[T2 format]
yyyymmdd is the date of the next 1 PPS pulse, referenced to UTC or local
time, expressed in year (yyyy)/month (mm)/day (dd) format.
hhmmss is the time of the next 1 PPS pulse, referenced to UTC or local
time, expressed in hour (hh)/minute (mm)/second (ss) format.
t is the Time Figure of Merit, a measure of the accuracy of the
1 PPS pulse.
f is the Frequency Figure of Merit, a measure of the stability of
the 10 MHz signal.
l is the status of a pending leap second adjustment:
0 (no adjustment pending), or
+ (a positive adjustment is pending), or
−
(a negative adjustment is pending).
r is the request-for-service summary bit of the Status Byte
Register.
v is the validity of time-related information in this message:
0 (valid) or 1 (invalid).
cc is the checksum of all preceding characters, computed as the
sum of their ASCII-encoded values, and reported as a
two-digit, ASCII-encoded hexadecimal number.