User Manual

Axell Wireless Limited
Technical Literature
MWAA Primary F/O Head End Documentation
B010 IF BDA 60-174202
Document Number 60-174202HBK Issue No. 1 Date 23/07/2009 Page 6 of 24
3. MWAA Primary Headend B010 IF BDA 60-174202
There are two 60-174202 IF BDAs in Primary F/O Head End Cab. 1 - 60-174201, both BDAs are
housed in rack 2.
MWAA Primary Headend B010 IF BDA (1) (Loudoun County 1) 60-174202
MWAA Primary Headend B010 IF BDA (2) (Loudoun County 2) 60-174202
Each 60-174202 IF BDA is an 8U, 19” rack mount tray and houses RF filtering and amplification
modules.
RF signals are received from off-air antennas in the Downlink direction, filtered and amplified and sent
via 60-174204 MWAA Primary B010 Splitter/Alarm Interface Shelf to the Fibre Optic Interface in
MWAA Primary F/O Head End BDA CAB 2.
RF signals are received in the Uplink direction from the Fibre Optic Interface in MWAA Primary F/O
Head End BDA CAB 2, via 60-174204 MWAA Primary B010 Splitter/Alarm Interface Shelf, filtered and
amplified and then passed to an antenna.
60-174202 IF BDA (1) (Loudoun County 1) receives its downlink signal from and sends its Uplink
signal to the “Ramp Tower” antenna.
60-174202 IF BDA (2) (Loudoun County 2) receives its downlink signal from and sends its Uplink
signal to the “Bull Run Tower” antenna.
3.1. 60-174202 List of Major Sub-Components
Component
Part
Component Part Description Qty Per
Assembly
02-005801 Bandpass Filter 1
02-005805 Bandpass Filter 1
10-000701 Variable Switched Attenuator 0 to 30dB 2
11-005902 Low Noise Amplifier 2
11-006702 Low Noise Amplifier 2
12-018601 5W Power Amplifier 2
16-096601 Duplexer Module 1
17-001117 AGC Detector Module 2
17-001201 AGC Attenuator Module 2
17-003043 Channel Selectivity Module 2
17-011501 Channel Control Module 2
20-001601 12V Dual Relay Board 1
80-008901 12V Relay Assembly 1