3-8
RedMAX Administration and Maintenance Guide
Redline Communications Inc. Confidential and Proprietary
Verifying GPS Receiver Operation
Step 1
Verify that the GPS receiver, GPS antenna, the cabling between the receiver and antenna,
and GPS are configured correctly. Refer to the RedMAX GPS Clock User Manual for
detailed information.
Step 2
Lighting protection must be properly installed and operating as outlined in the RedMAX
Base Station Installation Guidelines and the RedMAX GPS Clock User Manual.
Step 3
Verify that all sector controllers at the site are wired correctly for GPS time synchronization.
Refer to the RedMAX GPS Clock User Manual for detailed information.
Step 4
Turn on the GPS receiver, wait for approximately 15-30 minutes to ensure that a valid
satellite signal has been received and that time synchronization, with the satellite, has
been achieved.
Step 5
Verify that the GPS clock is generating a clocking pulse on its 1 PPS port. The event log
for the sector controller configured as the Master with GPS should log an event message
"GPS Detected". Review the event log as outlined in “Monitoring System Event Logs” on
page 2-6.
If any of these steps cannot be verified DO NOT PROCEED any further, and contact
[email protected] for assistance.
Step 6
On the Status page of the master sector controller verify that the device is the Active
Master. This confirms that the master sector controller is fully operational and is providing
a clocking pulse at its Sync Out port.
Configuring the Backup Master Sector Controller
If a Master is detected at startup, the Backup Master immediately synchronizes its clock to
the Master synchronization pulses and enables the backup capability. If at startup, the
Backup Master does not detect an active master, but a GPS clock signal is detected, the
Backup Master immediately synchronizes its clock to the GPS signal and enables the
backup capability.
Identify the Backup Master sector controller, if configured. The device should be clearly
labeled.
Step 1
Login to the Web client as outlined in “Connecting to the Sector Controller Web Client” on
page 2-4.
Step 2
Navigate to Interface > Wireless Interface to verify the values of Frame Duration (ms),
Downlink ratio (%) and Cell Range (km). These values must be same on all sector
controllers that will be synchronized with the GPS clock.
Step 3
Set the Synchronization Mode to Backup Master.
Step 4
Click the Save button to save these changes
Step 5
Reboot the sector controller as outlined in “Rebooting the Devices” on page 3-2.
Step 6
Verify the successful restart and correct operation of the sector controller.
