Installation Manual

Page 14 of 15
Issuer: Cara Stephens Doc. Num.: 6640-08-0035 Rev: A
Revised: November 21, 2008
Approval:
7.0 OPERATING AND MAINTENANCE INSTRUCTIONS
The FMN / GWN does not have any direct user interface.
The status of the FMN / GWN and its connected backup battery may be monitored by observing
the external LED1 blink pattern:
SOLID ON: Bad or missing battery
(also solid during initial booting of device)
BLINK (1 sec ON, 1 sec OFF): Battery charging (normal use condition)
WINK (50 msec ON, 1 sec OFF): Battery discharging
OFF: No Power
The FMN / GWN requires little routine maintenance. Each box should be periodically inspected
every 3-6 months to insure that the box remains free of corrosion and defects. It is important
that the box remains dust tight. Replace defective boxes immediately. Do not continue to use
any boxes that may have had their dust seal compromised.
The FMN / GWN may be disconnected from power, backup battery, or antennas during
maintenance or while being moved to a new location. When removing FMN / GWN power or
RF connections, place dust caps on all exposed connectors.