Users manual
NR3700-O/G
Revision #:
A
Date:
9-13-16
Page #:
14 of 19
5.0 Typical Phase Noise
10MHz Sine- Primary Output
Offset Frequency (Hz) Typical (dBc / Hz)
10
-95
100
-115
1K
-140
10K
-145
There are optional phase noise performance levels available - contact factory.
6.0 Alerts - Optional Function Relay
There are a number of critical circuits in the unit. These are monitored and a failure of
any of these will initiate an ALERT condition. The ALERT LED green to red and the
(optional) ALERT relay will open. The normal operating state is the relay contacts will be
closed. During cold start, the oven can behave in such a manner as to give an Oven
alert. This is normal and will only occur from a cold start. This condition should only
exist for approximately five minutes.
Units manufactured after June 1, 2016 move combines the GNSS lock and alert relay to
a single series connection that is routed to the rear connector. When the unit passes
self-test and achieves GNSS lock, the relay closes.
Front Panel LED
GPS Locked / TCXO Loop Locked
GPS Locked / TCXO Loop Unlocked
GPS Tracking / Pending Lock
Alert Status
7.0 GPS/GNSS Function
