3. Commissioning
This chapter outlines the process to optimize the performance of the repeater. The gain setting, isola-
tion concept, and downlink output power.
3.1 Downlink Output Power
The downlink output power of the repeater mainly depends on the input signal power and the repeater
gain. The gain is the amplifying indicator for both uplink and downlink in the repeater, and it can be
adjusted. Hence, the output power of the repeater can be estimated.
Signal Input Power + DL Gain = DL Output Power
For any given input signal power, its corresponding output is increased by the gain of the repeater. To
ensure the maximum output power, the following condition should be met.
DL Gain = Min [(DL Output Power – Input Power), Max. DL Gain]
If the input signal amplified by the gain set exceeds the rated set output limit, the ALC (Automatic Level
Control) will be triggered. The ALC ensures that the maximum output power of repeater is maintained
at a certain point and does not overdrive the repeaters amplification circuit.
3.2 Repeater Configuration
The MP2110Aseries repeaters are designed with plug and play ability. The configuration for these
repeaters is not necessary, simply just switch the Smart function on, and the repeater would auto adjust
its gains according to the environment condition.
3.2.1 Start-up the Repeater
Note: It is suggested that only when isolation is 15dB higher than repeater’s gain then the repeater can
be switched on.
Make sure power supply cable is connected to the repeater properly, and the voltage is within repeat-
er’s voltage working range: 110/220V ± 20%
Plug the power cord into the proper socket. Once the repeater is on, it requires several seconds for
initialization.
When Repeater is close to the BTS, hence there is a high input power at the donor antenna. Even with
the smart ability of the auto gain adjustment, it is still recommended to add an RF attenuator at repeat-
er’s BTS port to avoid interference to the BTS.
