Symmetricom S100 manual Timecode Settings, Irig-A Irig-B

SyncServer S100

•Real-Time Clock, or RTC, synchronizes the oscillator to the 1PPS signal from the timing engine itself

Mode - How time is being acquired.

Time Format - The timing engine uses Binary code time.

Year - Set the year here. (Note: You must enter the year if you are using IRIG as the primary reference source).

Local Offset - Allowed values are -16 through +16, and can include half-hour offsets.

Propagation Delay - If there is any propagation delay from the reference source, the timing engine will adjust for it. Values range from -9999999 to +9999999.

Current Leap Seconds - This figure accounts for the local offset.

Scheduled Leap Event Time - This is a 32-bit binary value corresponding to the number of seconds elapsed since 0 hour January 1, 1970 UTC.

Scheduled Leap Event Flag - This will alert you to an upcoming leap event. GPS Time Format - UTC is the default.

IEEE Daylight Savings Flag - This alerts you to an upcoming Daylight Savings Time event.

Timecode Settings

Figure 4-13:Timecode Settings

Code type choices in the drop-down list box are:

•IRIG-A

•IRIG-B

•IEEE 1344

•NASA 36

Code Type - This identifies the time code in setting.

Modulation Type - The type associated with the time code signal:

•AM, for amplitude modulated

•DC, for direct current level shift, or digital IRIG

66 S100 User Guide – Rev. D – June 2005