User's Manual

UM-0909 31
Overflow
Grey: normal state /
Red: alarm state
This indicator shows overflow on input circuitry is
occurring. This condition can be avoided
increasing input attenuator
Input Attenuator -
RF IN from TBS
(DL)
0dB to 30dB
Input attenuator to accommodate input levels.
This value must be set to avoid overflow
condition. Together with output attenuator of
remotes sets the downlink gain:
G_DL (dB) = 80 – AttINmaster(dB) –
AttOUTremote(dB)
o Master RF Output parameters. Next table describes information of this frame:
Parameter
Range
Description
UL Output power
---
This indicator shows output level in UL band
AGC
Grey: normal state /
Red: alarm state
This indicator shows gain reduction that master
unit is applying at RF output to prevent PA UL
overload
Output Attenuator
RF OUT to Base
Station (UL)
0dB to 30dB
Output attenuator to adjust UL gain. System UL
gain can be computed as:
G_UL (dB) = 80 – AttOUTmaster(dB)
o Master Board status: general parameters of master unit are contained in this
frame
Parameter
Range
Description
Temperature
---
This indicator shows unit temperature
High temperature
alarm
Grey: normal state /
Red: alarm state
High temperature alarm condition is indicated
with this led.
Signal processor
alarm
Grey: normal state /
Red: alarm state
Alarm indicates that digital signal processor is
not working properly.
RESET control
---
With this control, unit can be restarted
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