36
Startup and Operation
FAULT: HO / RECEIVER
HO OSC. LOOP UNLOCKED
The Holdover Oscillator (HO) Phase Lock Loop (PLL) is unlocked, which means that the PLL is
unable to maintain lock between the HO and the VCXO.
FAULT: HO /RECEIVER
HO OSC. FAIL
The Time Base Processor (TBP) is no longer receiving a signal from the Holdover Oscillator (HO).
6.7
Inputs and Outputs
6.7.1
IRIG-B Time Data
IRIG-B time is sent out immediately, when the clock is powered ON, from any timing output port
configured for IRIG-B. Time will not be accurate until the clock is locked to the GNSS. See also
out-of-lock indication in Section 2.2.2 and Section 8.4.
Summary of Contents for 1201B
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