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8.5.3. Repeater Commissioning
The curve about device working status
P
Output Power:
Output Power
P
input Power:
Input Power
V
ATT:
Attenuation value of attenuator
P
input Power
-V
ATT:
Input Power
－
Attenuation value of attenuator
P
max
: Rate output power
Downlink gain setting
First the alarm LED only indicates the downlink input power level, here we use color of Alarm LED
to adjust the gain of the repeater.
As for the downlink working performance, Alarm LED of “Green” color
and with the intention of turning orange is a good working point, here we refer as “edge point”. At this time,
downlink output power and coverage effect are stable.
And the equipment must be as far as possible away from overloading status of “red” (the equipment would
hold higher interference and depression ability at this stage). So we try our best to set the equipment near
“edge point” of green and intention of turning orange during engineering.
P
Output Power
P
max
(P
input Power
-V
ATT
)
Green LED
linear
amplification area
Red LED
Equipment
overload zone
Orange LED
Stable work area
Critical stable point
Output power, input signal and their attenuation curve
