evertz 5601MSC - GPS Frequency Reference; Figure 2-13: Lock Diagram #6 - GPS Frequency Reference

Model 5601MSC
Model 5601MSC Master SPG/Master Clock System
OPERATION Revision 2.2 Page - 35
2.2.13. GPS Frequency Reference
Figure 2-13: Lock Diagram #6 - GPS Frequency Reference
When the 5601MSC has been ordered with a GPS receiver (GP option), the unit can lock in frequency
and phase to the high-accuracy timing provided by the GPS satellites. The main oscillator frequency is
locked to the 1 pulse per second (PPS) timing pulse provided by the receiver. Because of the low rate
of this timing pulse, only the high-stability OCXO oscillator can be used and the Genlock Range control
will be forced to Narrow regardless of the menu setting.