User's Manual

Base Station Configuration Tsunami MP.16 3650 System User Guide
Global Positioning System (GPS)
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Global Positioning System (GPS)
The Base Station can be configured (via advanced MAC configuration) to enable GPS. In this mode, the BS will require a
functioning GPS recevier to be connected to its GPS/SYNC port. Once the BS attains synchronization with the one pps
signal of the GPS recevier, it will detect any timing delta between the GPS one PPS signal ad its internal start of transmit
frame time. Accordingly, the BS start of transit frame will be adjusted to match the one pps signal of the GPS recevier.
Whenever GPS is enabled and there is synchronization between its one pps signal and the BS, the BS will mute its radio
transmission until such synchronization is attained.
GPS Synchronization
CAUTION: DO NOT enable GPS Synchronization on a Base Station unless you are concurrently connecting a GPS unit
to the Base Station. With GPS enabled, if a GPS unit is not connected to the Base Station, or if the GPS unit
loses satellite reception, the Base Station’s transmittor will shut down until GPS satellite reception is
restored.
GPS Synchronization is enabled on the Tsunami MP.16-3650 Base Station via the Advanced MAC Configuration screen.
After selecting “Enable” from the GPS ENable/Disable menu, click the “OK” button. To complete the process, the Base
Station must be rebooted.
GPS Unit Installation
Position the GPS unit in a location where the antenna plate is parallel to the Earth/horizon. The GPS’domed antenna
should be exposed to as much of the sky possible (clear line-of-sight) so that the GPS unit can always acquire at least
four GPS satellites to extract timing signals for the Base Station transmission synchronization.
Insert the band clamp through the slots in the GPS unit mounting bracket and around the mounting pole. Tighten the
clamp around the mounting pole and then tighten the screw in the clamp to secure the GPS unit mounting bracket to the
mounting pole.
Attach the GPS unit mounting bracket using the #10-32x3/8 SEm screws (the screws with attached washers).
Connecting the GPS Unit to the Base Station
Remove the weather-protection cap from the Base Station’s GPS/SYNC connection enclosure to expose the RJ45 jack.
Plug the GPS unit’s connection cable (RJ45 plug) into the RJ45 jack of the Base Station.
NOTE: When power is applied to the Base Station, the GPS unit automatically be powered as well.
Secure the GPS connection cable assembly as follows:
1. Apply two wraps of Teflon tape around the threads of the Base Station’s GPS/SYNC RJ45 jack enclosure in a
clockwise direction.
2. Make sure that the rubber gasket is properly seated in the sealing cap of the sealing cap/lock nut assembly.
3. Slide the sealing cap/lock nut assembly over the RJ45 jack and thread onto the enclosure. Hand-tighten first, then
use an adjustable wrench or similar tool to tighten one more quarter turn.
4. Tighten the lock nut (Torque 4 N.m/35in-Ibs).
5. Thread the sealing nut onto the sealing cap/lock nut assembly must be fully tightened over the RJ45 connector
before the sealing nut is fully tightened. If not fully tightened first, the GPS unit connection cable may twist and be
damaged.
CAUTION: The lock nut on the sealing cap/lock nut assembly must be fully tightened over the RJ45 connector before
the sealing nut is fully tightened. If not fully tightened first, the GPS unit connection cable may twist and be
damaged.
Waterproof of the GPS connector assembly in the same manner as for the Power/Ethernet connector assembly.