Users manual
NR3700-O/G
Revision #:
A
Date:
9-13-16
Page #:
16 of 19
To overcome these errors, the
receiver then matches or “skews” its own code to
become synchronous with the satellite signal. This is repeated for all satellites in turn,
thus measuring the relative transit times of individual signals. By accurately knowing all
satellite positions, and
measuring the signal transit times, the user’s position can be
accurately determined.
The GPS Lock LED illuminates green when the unit is locked to the GPS system. If the
LED is red, the unit is operating on the TCXO.
.
The GPS lock status is on the RS232 connector. After June 1, 2016 the GNSS lock and
status relay is combined and available on the rear panel connector pins 3,4.
If the GPS indicator remains red for an extended period of time, it could be an indication
of an antenna, cabling or unit malfunction. Confirm the antenna is still connected and
has not become obstructed from a clear view of the sky. To check the unit, an alternate
antenna can be tried in order to isolate the malfunction. For further support, please
contact the factory 866-313-9401
