User's Manual

APEX1930 USER MANUAL V1.0.00 Tech Support: 1-888-317-8766
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Gain, Input/ Output
power or DC Current
are changing
randomly or appear
to be unstable.
Oscillation
Most common cause for unstable gain and power is
feedback brought on by insufficient antenna isolation.
1. Reduce repeater gain and/or AGC level.
2. Improve the field conditions that cause poor antenna
isolation.
The red light is on. Automatic Shutdown
Automatic shutdown occurs when the amplifier is over
driven. The amplifier is most commonly overdriven by:
1. Oscillation due to poor antenna isolation.
2. High input power combined with high gain settings
including high UL input from the mobile device.
User the alarm history page to determine the cause of
the shutdown. Eliminate the root cause of the
shutdown and restart the repeater.
Technical Support
Web site: www.r-tronamerica.com
Toll Free: 888-317-8766
6.2 GUI Alarm
Problem Check Point Solution
DC Current
If the same alarm occurs after reset Power, request
technical support.
Temperature
Execute of System Reset (NCU) on Network Setup
page. If the same alarm occurs request technical
support.
ASD
Check Isolation and DL/UL Input power..
This may be caused when any of DL and UL path
controls if off by Manual gain setting.
General
Heartbeat
Check the connection of the Remote NMS Cable.
Check the interval of Heartbeat on the WEB GUI
DL Input Power
Check Input power level to Donor antenna port.
Connect fixed attenuator into Donor antenna port when
actual Input Power is high.
DL Output Power
Check the DL input Power, need to adjust the antenna
location, azimuth or install attenuator.
Downlink
DL Return Loss
Ensure cable connected to Antenna port.
If the same alarm occurs after connecting termination to
antenna port, request technical support.
Uplink
UL Output Power
If the UL Input Power is too high, suspect excessive
mobile TX power. Determine root cause of high mobile
TX power.