M e r i d i a n I I U s e r M a n u a l
108
C H A P T E R T E N
109
M e r i d i a n I I U s e r M a n u a l
R E A R - P A N E L I / O
T
is the Time Figure of Merit character described in
Appendix A - TFOM
.
This is the on-time character, transmitted during the first millisecond of each second.
YYYY
is the year
DDD
is the day-of-year
:
is the colon character (0x3A)
HH
is the hour of the day
MM
is the minute of the hour
SS
is the second of the minute
z
is the sign of the offset to UTC, + implies time is ahead of UTC.
ZZ
is the magnitude of the offset to UTC in units of half-hours.
Non-zero only when the Time mode is Local.
m
is the Time mode character and is one of:
G = GPS
L = Local
U = UTC
CC
is the current leap seconds value.
FF
is the future leap seconds which will show a leap second pending 24 hours in advance.
<CR>
is the ASCII carriage return character (0x0D)
<LF>
is the ASCII line feed character (0x0A)
NENA Format
NENA is the National Emergency Number Association. This organization has adopted several ASCII
time code formats for use in PSAPs (Public Safety Answering Points) and they are specified in the
NENA PSAP Master Clock Standard, Issue 4. These ASCII time code formats are NENA Format 0
(NENA0), NENA Format 1 (NENA1), and NENA Format 8 (NENA8):
NENA0
<CR><LF>Q^^DDD^HH:MM:SS^dTZ=XX<CR><LF>
Q
is the time quality indicator and may be either:
<space> ASCII space character (0x20) which indicates locked.
? ASCII question mark (0x3F) which indicates the unsynchronized condition.
^
is the space character (0x20).
DDD
is the day-of-year (001-366)
:
is the colon character (0x3A)
HH
is the hour-of-the-day (00-23)
MM
is the minute-of-the-hour (00-59)
SS
is the second-of-the-minute (00-60)
d
is the DST indicator (S,I,D,O).
TZ=XX
is the time zone where XX is 00 through 23
<CR>
is the ASCII carriage return character (0x0D).
The first <CR> is the on-time character.
<LF>
is the ASCII line feed character (0x0A).
Summary of Contents for Meridian II
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