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 10 of 24
0dB 0dB 0dB 0dB
2dB 4dB 8dB 16dB
0dB 0dB 0dB 0dB
2dB 4dB 8dB 16dB
UPLINK
ATTENUATOR
DOWNLINK
ATTENUATOR
CB A
12V DC I/P
+ -
FUSE
T6.3A
RS232 ALARM
OUTPUTS
ALARM
PINS 1 - 2
UPLINK
DOWNLINK
SINGLE CHANNEL
CONTROL MODULE
SINGLE CHANNEL
CONTROL MODULE
60-174202
D E ABC
FG L
H
I
J
K
3.5. 60-174202 Rear Panel
A Downlink RF Output to 60-174204 Splitter/Combiner Alarm Interface Shelf
B Uplink RF Input from 60-174204 Splitter/Combiner Alarm Interface Shelf
C Combined input from and output to antenna (see ** below)
D Downlink Variable Switched Attenuator 10-000701
E Uplink Variable Switched Attenuator 10-000701
F Channel control switches for Downlink
G Channel control switches for Uplink
H 12V DC Input from Dual PSU Shelf 13-005301
I 6.3A Fuse for DC input
J Alarm Output to 60-174204 Splitter/Combiner Alarm Interface Shelf
K Auxiliary alarm output
L Earth Connection
Antenna connections **
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.