User's Manual

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ALARM LED.
 If it shines “orange”, use 1dB as step to reduce the gain until “green” turns on, then increase the gain
1~3dB attenuation value until “orange” starts to turn on, then brings back 1~2dB till “green” is on, then
fix the gain and the repeater’s downlink output power reaches the perfect status.
 If it shines “green” then,
 Please check coverage effect firstly, if the coverage effect is good, the engineering has reached
expecting target, thus there is no need to do anything.
 To check whether the attenuation value has been set, if it is, use 1dB as step to increase gain until
the “orange” turns on, then brings back 1~2dB till “green” is on again , then the repeater’s downlink
output power reaches the perfect status.
 But if attenuation has not been set, it indicates that the input power is not strong enough to let the
repeater reach its good coverage.
If the coverage effect is not good, the donor antenna should be adjusted to get stronger input signal.
It is recommended that one person shall check the coverage effect inside the building when the
other person is trying to adjust the antenna or the repeater. At this stage, please make sure
“Orange” color will not be generated by self oscillation. Please take off the server antenna to check if
it is self oscillation or not: if the Orange turns to be green, it is self oscillation; if it stays as Orange, it
is not self oscillation. Please follow steps in other page to turn Orange to be Green.
z Uplink gain setting
Standard: uplink attenuation values =downlink attenuation values
Remark: Avoid putting more than a 5dB difference between the Uplink and Downlink. And Uplink gain must
be equal to or less than Downlink gain, it can’t be more in order to avoid interference with mobile network.
9.4. System Test
9.4.1. Check whether the coverage is good
1) Have a test with mobile phone or data card (engineering mobile phone is preferred). If the signals in most
areas have not been improved, please check below again:
 The weak input signal leads to the low output power. Change the direction of donor antenna or its
installation position or replace donor antenna with higher gain antenna to increase input signal
power level.