Symmetricom Time Server User Manual download pdf (Page 72)

4-58 TimeVault™ User’s Manual 6000-100Ch4.fm Rev. D

Chapter 4: Serial or Telnet I/O Functions Function Commands

4.3.6 F67 – Leap Second Information

Use Function 67 to retrieve information regarding upcoming leap seconds. This is

satellite information and cannot be changed through the unit. Although UTC leap second

adjustments may be performed on four occasions annually, in practice they are only

performed twice: June 30

and December 31

To return the leap second status, send the following command:

F67<Enter>

where

F = ASCII character

F = function number

<Enter> = input line terminator

<CR><LF> = output line terminator

An example of the response might be:

F67 06/30/96 +1 <CR><LF>

This response indicates there is a leap second addition during the last minute of

June 30, 1996.

If there was no leap second pending, the response might be:

F67 none <CR><LF>

4.3.7 F72 – Fault Status Request

Use Function F72 to display the status of the antenna feed circuit, and GPS lock status

fault detectors within the unit.

To display the status of the fault detectors, send the following command:

F72<Enter>

The unit responds:

F72<SP>Antenna: <ANT STATUS> GPS: <GPS STATUS><CR><LF>

where:

F = ASCII character F

72 = function number

<SP> = space

<ANT STATUS> = OPEN, GOOD or SHORTED

<GPS STATUS> = LOCKED, UNLOCKED

<CR><LF> = output line terminator

Sample entry:

F72<Enter>

The response might be:

F72 Antenna: OK GPS: Locked<CR><LF>

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Symmetricom Time Server User Manual Page 72