Symmetricom 5402 User Manual
PN 8500-0150, Rev. A, May 2005
13
Operating Manual
Operation
Enter Resync Delay
When the 1 PPS In is lost or becomes invalid (rate threshold is exceeded), the unit is placed
into a holdover mode. It remains in this mode until the 1 PPS In is valid for a time period (in
seconds) determined by "Resync Delay". At five seconds before discipline restarts, a
determination is made as to whether the 1 PPS Out will be resynchronized (jammed). This is
based on the "Resync Delay". Refer to the Discipline Sequence flowchart in
into a holdover mode. It remains in this mode until the 1 PPS In is valid for a time period (in
seconds) determined by "Resync Delay". At five seconds before discipline restarts, a
determination is made as to whether the 1 PPS Out will be resynchronized (jammed). This is
based on the "Resync Delay". Refer to the Discipline Sequence flowchart in
Command Format:
Description:
dddd - Resync Delay; dddd (5 to 9999 seconds) is the number that determines how long the
1 PPS needs to be valid before disciplining starts.
1 PPS needs to be valid before disciplining starts.
Response Format:
Enter Rate Threshold
Command Format:
Description:
rrrrrr.rrr - Rate Threshold; rrrrrr.rrr (0 to 999999.999 microseconds) is the limit value that
determines if the 1 PPS input is valid. When the 1 PPS is invalid, the DAC value will not
change. The unit enters holdover. Holdover is exited when the "Resync Delay" requirements
have been met.
determines if the 1 PPS input is valid. When the 1 PPS is invalid, the DAC value will not
change. The unit enters holdover. Holdover is exited when the "Resync Delay" requirements
have been met.
Response Format: