Spectracom 9289, Instruction Manual

Page: 165 / 198

Spectracom Corporation Model 9289
NetClock/NTP Network Time Provider Instruction Manual 5-5
Example:
?A01 271 12:45:36.123 S
The example data stream provides the following information:
Sync Status: The clock has lost GPS time sync. The inaccuracy code of “A” indicates the
expected time error is <10 milliseconds.
Date: Day 271 of year 2001.
Time: 12:45:36 UTC time, Standard time is in effect.
5.4 Format 3
Format 3 provides a format identifier, time synchronization status character, year, month, day,
time with time zone and DST corrections, time difference from UTC, Standard time/DST
indicator, leap second indicator and on-time marker. Format 3 data structure is shown below:
FFFFI^YYYYMMDD^HHMMSS±HHMMD L # CR LF
where:
FFFF = Format Identifier (0003)
I = Time Sync Status (Space, ? *)
^ = space separator
YYYY = Year (1999, 2000, 2001 etc.)
MM = Month Number (01-12)
DD = Day of the Month (01-31)
HH = Hours (00-23)
MM = Minutes (00-59)
SS = Seconds (00-60)
± = Positive or Negative UTC offset (+,-) Time Difference from UTC
HHMM = UTC Time Difference Hours, Minutes (00:00-23:00)
D = Daylight Saving Time Indicator (S,I,D,O)
L = Leap Second Indicator (space, L)
# = On time point
CR = Carriage Return
LF = Line Feed
The time synchronization status character I is defined as:
(Space) =
Whenever the front panel time synchronization lamp is green.
? = When the receiver is unable to track any satellites and the time synchronization
lamp is red.
* =
When the receiver time is derived from the battery backed clock or set manually
through the Setup Port Interface.
The time difference from UTC, ±HHMM, is selected when the Serial Comm or Remote port is
configured. A time difference of -0500 represents Eastern Time. UTC is represented by +0000.
The Daylight Saving Time indicator D is defined as: