User Manual

Confidential, Proprietary Information
Title: PCS FlexBeamer
®
RF Repeater
System A &O Manual
Doc. No.:
913002500
Rev.: 00
Page: 42 of
80NUMPAGES
3.2.1. Donor Antenna Setting
1. Install the Repeater Donor Antenna and direct it optimally towards the Donor Sector.
2. Connect a Pilot Scanner to the Donor Antenna port for verifying that the requested sector is
relayed.
3. Record the maximum pilot signal level at the Donor Antenna terminal:
• Pilot PN Sequence Offset: _________
• Pilot power Pp _________[dBm]
• Pilot quality Ec/Io: ____________[db]
3.2.2. Repeater Down Link (DL) Gain Setting
The overall DL gain is settable in the rang of : 35dB to 95 dB by using the Remotely controlled
Attenuators of the BAU, FLEXBEAMER® and RAC. The following procedure will define the
optimum DL gain setting.
1. FLEXBEAMER® Gain Setting
Calculate the required Pilot Power according to the normal Site Planning Procedure to be
transmitted by the Repeater Array, according to the required coverage area, using the Network
planning tools. Since the maximum FLEXBEAMER® total power is 8 (2x4) watts, the maximum
allocated Pilot Power is 0.8 Watts (+29dBm) (20% of total power).
The FLEXBEAMER® Gain is settable over a 15.5 dB range , in 0.5 dB steps.
Denoting the required Pilot Power P
P
( 2x0.8Watt) , the FLEXBEAMER® amplifier attenuator
should be set to:
FLEXBEAMER® Attenuation setting = 10 log
10
(P
T max
/10) =10 log
10
(P
P
/
.
10)[dB]
……(1)
When P
T max
 Watt
Example: Assume your Network Planning tool requires the Max. Pilot Power from
the Distribution Array to be 1W. The FLEXBEAMER® attenuation should be set
according to (1) to the following Value:
FLEXBEAMER® Att. Value= 10 log
10
(1/2.0)= -3.01 db ( rounded to 3db)