User's Manual

Table Of Contents

044-05251 Rev A A-1

Appendix A

Block Diagrams

Introduction

This appendix describes the main signals paths for the WRH.

Non-Diversity

Figure A-2 shows the non-diversity block diagram configuration of the WRH-V. The WRH-V is always fed by a

BTS via either a BMU or an OCM. The TX signal from the BTS is converted to an optical signal in a BMU or

OCM and fed to the WRH-V via a fiber optic cable. The optical signal is then received by the FON and

converted to an RF signal. The FON supervises the signaling and reports errors via the RCU connected to the

CU.

The RF signal enters the WBA, is amplified, and further amplified in amplifier stages followed by controllable

attenuators. The signal exits the WBA and enters the MCPA where it is amplified and fed to the DPX. The

amplified output signal passes the DPX before it is fed to the service antenna.

The uplink signal path is located on the same WBA but goes through an LNA before entering the WBA.

Figure A-1 WRH-V Block Diagram - Non-Diversity

WDM

FOU

DPX

WBA

LNA

MCPA

To/From

OCM or

BMU

RCU

RCI

PSU

FON

ALI

External

alarms

850 MHz

TX0/RX0

1900 MHz

TX0/RX0