A
PPENDIX
:
M
AINTENANCE
A
ND
T
ROUBLESHOOTING
Dekolink™—IDEN Repeater Hardware Manual
31
Indication
Cause
Action
Downlink Return
Power [VSWR]
alarm
High Voltage Standing
Wave Ratio (VSWR) at the
Mobile port
Check the antenna and cable
connection at the mobile port
Replace the antenna if necessary
Temperature
alarm
Indicates a temperature
over 60ºC.
Verify that the repeater is mounted
correctly, with the repeater gland
plate facing the floor
Increase ventilation
Door Open alarm Indicates that a door is
open
Close the repeater door
Check the connection of the door
switch
Excessive inter-
modulation or
spurious
frequencies
alarm
Amplifier oscillation
caused by insufficient
isolation
Improve the isolation between the
antennas or reduce RF gain
Use the Smart ALC feature
Excessive noise
in Downlink
/Uplink
High input power causing
amplifier overload
Use the Smart ALC feature
Reduce the Max Gain in the
Downlink path
Check the input power to the repeater
and make sure it is less than 20 dBm
Check the Channeler LEDs. If active
(red), this indicates that the input
power to the repeater is high.
If the signal is too high, connect an
external 10dB attenuator in series to
the Base/Donor connector
Connection to
the controller
failed
in the local
connection
Communication failure
Check the physical connection
between the PC COM1 and the
controller RS232 input
Verify that the LED of the controller
is blinking fast
Reboot the repeater
Restart the PC
Re-install the controller software
