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Chapter 5 Command Reference
1 PPS Reference Synchronization
5-38 Operating and Programming Guide
Operating in Holdover __________________________
(continued)
"
Recovering from Holdover (continued)
This command initiates recovery from holdover if recovery was inhibited by
time intervals exceeding limit.
The time interval used for this comparison is the time interval between the
internal oscillator’s 1 PPS edge and the GPS system’s 1 PPS edge. When this
time interval consistently exceeds the specified limit, the instrument enters
the holdover state, “Waiting to Recover.”
Recovery is initiated when the time intervals consistently fall within limits,
or when the limit is ignored by issuing this command.
This command initiates a near-instantaneous alignment of the GPS 1 PPS and
Receiver output 1 PPS if the command is issued during recovery from holdover.
Context Dependencies
This command is only valid when recovering from holdover. See bit 2 of the
Holdover Status Register (if it is 1, this command is okay). Sending this
command when the Receiver is not recovering will generate
error -221
.
:SYNChronization:HOLDover:RECovery:LIMit:IGNore
Initiates recovery from holdover if recovery was inhibited by time
intervals exceeding limit.
EVENT
:SYNChronization:IMMediate
Initiates a near-instantaneous alignment of the GPS 1 PPS and
Receiver output 1 PPS if the command is issued during recovery
from holdover.
EVENT