User's Manual

JUNI JF43-E1900/CFN03
CDMA FIBER FED REPEATER OPERATIONS MANUAL
Version 1.17 ⓒ J
uni America Inc. Page 37 of 88
4. Adjust the UL0 Main ATT from the LMT (RF power level with measuring spectrum
analyzer) to adjust the reverse output to be -35dBm. (This is to set the reverse gain of
the system to 0dB considering the 20dB coupler used to connect to the BTS input.)
[Figure 3.18] Connection to set up UL gain
3.5.14.2 Setup for DL Gain
1. Check whether the DL input to the DHU is within -3dBm to +7dBm/Total.
2. Set the RU FWD ATT to 25dB.
3. Turn ON the forward LPA.
4. While monitoring the forward output power measurement function of the LMT (Local
Maintenance Terminal), adjust the RU forward attenuation to obtain the desired RU
forward output level.
Note: The technician responsible for the repeater provisioning should have data for off peak
and peak hour traffic for the BTS. It is recommended to set the RU output around 7 to 8dB
less than the max output (43dBm) at off peak hours (No traffic) to prevent any over power
shutdown.
DL/UL_0
DL0/UL0
Donor
6dBo
Loss
Signal Generator
Spectrum Analyzer
Remote