Ascii Time Code In/Out [1204-02, -04] - Spectracom SecureSync User Reference Manual

5.4 Time Code Option Cards
Timescale : Used to select the time base for the incoming time code data. The entered
Timescale is used by the system to convert the time in the incoming data stream to UTC
time for use by the System Time. The available choices are:
The incoming input time information may be provided as local time, but System Time may be con-
figured as UTC time, so internal computations need to be performed. With the Timescale field set
to "Local", select the name of a previously created Local Clock. The Time Zone and DST rules, as
configured in the Local Clock will be applied to the front panel time display. Refer to "Setting up a
Local Clock" on page 175 for more information on Local Clocks.
Offset : Provides the ability to account for HAVE QUICK cable delays or other latencies in
the HAVE QUICK outputs. The Offset values are entered in nanoseconds (ns). The avail-
able Offset range is –500 to +500 ms.
5.4.7

ASCII Time Code In/Out [1204-02, -04]

The ASCII Time Code Option Card, Model 1204-02 (RS-232) provides:
one male DB-9 RS-232 input connector (J2),
and one female DB-9 RS-232 output connector (J1)
The ASCII Time Code Option Card, Model 1204-04 (RS-485) consists of one RS-485 input, and
one RS-485 output, integrated in a shared terminal block connector.
The interfaces accept Asynchronous Serial signals including date and time information. The input
and output Data Formats are selected among predefined formats.
376
STANAG 4372 HQ IIA
STANAG 4430 Ext HQ (Extended HAVE QUICK)
STANAG 4430 STM (Standard Time Message)
ICD-GPS-060A BCD
ICD-GPS-060A HQ
DOD-STD-1399 BCD
UTC : Coordinated Universal Time ("temps universel coordonné"), also referred to as
ZULU time
TAI : Temps Atomique International
GPS : The raw GPS time as transmitted by the GNSS satellites (as of July, 2015,
this is 17 seconds ahead of UTC time)
A local clock set up through the Time Management Page: This option will appear
under the name of the local clock you have set up. Refer to "The Time Management
Screen" on page 168 for more information on how to configure and read the System
Time. Local timescale allows a Local Clock to apply a time offset for Time Zone and
DST correction.
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