Symmetricom Z3801A, User Manual

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Chapter 1 Getting Started
Z3801A Front Panel at a Glance
1-2 User Guide
Z3801A Front Panel at a Glance
1
When the
Power
indicator is illuminated, it
indicates that the proper input power is
supplied to the Receiver.
2 User-definable indicators labeled
Enabled
and
Active
. These can be turned on through the
RS-422 port.
3
When the
Alarm
indicator is illuminated, it
indicates that the receiver has detected an
internal condition that requires attention.
4
When the
GPS Lock
indicator is illuminated, it
indicates that the Receiver is receiving the
GPS signal and is locked on one or more
satellite(s).
5
When the
Holdover
indicator is illuminated, it
indicates that the Receiver is NOT locked to
the GPS signal. The Receiver is keeping time
based on the internal reference oscillator
signal. The internal reference oscillator will
determine the accuracy of the 1 PPS signal
and the 10 MHz reference output. (See
specification for Accuracy in Holdover in
Chapter 5, “Specifications Summary,” in this
guide.)
GPS RECEIVER
Power Enabled Active Alarm GPS Lock Holdover
I N C O R P O R A T E D
1 2 3 4 5