User Manual

Axell Wireless Limited
Technical Literature
Lincoln/Holland Upgrade Equipment
Document Number
60
-
214701HBKM
Issue No.
1
Date
29/08/2008
Page
43
of
43
Appendix B
B.1 Initial Equipment Set-Up Calculations
General Information
Site Name: Client Name:
Date: AWL Equip. Model No.
Antenna Systems
Model Gain Azimuth Comments
A
-
Service Antenna
B – Donor Antenna
Type Loss Length Comments
C – Service Feeder
D – Donor Feeder
Initial Parameters
E – CE Output Power dBm
F – Antenna Isolation dB
G – Input signal level from donor BTS dBm
Operating Voltage V
Downlink Calculations
Parameter
Comments
Value
Input signal level (G) dBm
CE max. o/p power (E)
dBm
Gain setting E - G dB
Isolation required
(Gain + 10dB)
dB
Service antenna gain (A) dB
Service antenna feeder loss (C) dB
Effective radiated power (ERP) E+A-C dBm
Attenuator setting CE gain-gain setting dB
If the input signal level in the uplink path is known and steady, use the following calculation table to
determine the gain setting. If the CE features Automatic Gain Control the attenuator should be set to
zero and if not, then the attenuation setting for both uplink and downlink should be similar.
Uplink Calculations
Parameter Comments Value
Input signal level dBm
CE max. o/p power (E) dBm
Gain setting
dB
Required isolation dB
Donor antenna gain (B)
dB
Donor antenna feeder loss (D) dB
Effective radiated power (ERP) E+B-D dBm
Attenuator setting (CE gain-gain setting) dB