HR
X
-C-HB-3
V
IA
L
ITE
HD
C-B
AND
L
INK
H
ANDBOOK
3
TABLE OF CONTENTS
1
INTRODUCTION ............................................................................................................................. 5
1.1
The C-Band ............................................................................................................................................ 5
1.2
Typical deployment ................................................................................................................................ 5
1.3
Care of fibre optic connectors ................................................................................................................ 5
2
SETTING UP AND UNDERSTANDING THE FIBRE OPTIC LINK ................................................. 6
2.1
Module operation ................................................................................................................................... 6
2.1.1
5HP standard plug-in modules .................................................................................................... 6
2.1.2
RF connectors .............................................................................................................................. 7
2.1.3
Purple link modules ...................................................................................................................... 7
2.2
Fibre optic cable & connectors ............................................................................................................... 8
2.2.1
Connecting and disconnecting ..................................................................................................... 8
2.2.2
Cleaning optical connectors, cleaning before every use ............................................................. 8
2.2.3
Cleaning optical connectors, high levels of contamination .......................................................... 8
2.2.4
FC/APC Connectors .................................................................................................................... 9
2.2.5
SC/APC Connectors .................................................................................................................. 10
2.2.6
E2000/APC Connectors ............................................................................................................. 10
2.2.7
Minimum bend radius................................................................................................................. 10
2.3
Using the RF link module ..................................................................................................................... 11
2.3.1
Connecting the module .............................................................................................................. 11
2.3.2
Front panel indicators, plug-in modules ..................................................................................... 11
2.3.3
LED indicator, purple modules ................................................................................................... 11
2.3.4
Module summary alarm ............................................................................................................. 11
2.3.5
Connecting to the summary alarm ............................................................................................. 12
2.3.6
Received light level (RLL) alarm ................................................................................................ 12
2.3.7
Module analogue monitor .......................................................................................................... 12
2.3.8
High power and DWDM transmitter modules, thermal load ...................................................... 13
2.3.9
Operating in gain control modes ................................................................................................ 13
2.4
Controlling RF modules ........................................................................................................................ 14
2.4.1
Manual control, MGC ................................................................................................................. 14
2.4.2
Manual control, DIP switch functions ......................................................................................... 14
2.4.2.1
DIP switches - receiver MGC ...................................................................................... 15
2.4.2.2
DIP switches - transmitter MGC ................................................................................. 15
2.4.2.3
Manual gain control example ...................................................................................... 16
2.4.2.4
DIP switches - control ................................................................................................. 16
2.4.3
Changing module RF gain ......................................................................................................... 17
2.4.4
Software control - via SNMP controller ...................................................................................... 17
2.5
LNA/LNB and BUC DC feeds............................................................................................................... 17
2.5.1
LNA/LNB feed - transmitter modules ......................................................................................... 17
2.5.2
LNA/LNB feed efficiency - plug-in modules ............................................................................... 17
2.5.3
LNA/LNB voltage boost - plug-in modules ................................................................................. 18
2.5.4
LNA feed - Purple link modules ................................................................................................. 18
2.5.5
LNA feed
– Voltage versus current characteristic ..................................................................... 18
2.5.6
BUC feed - receiver modules ..................................................................................................... 18
2.5.7
Manual configuration of LNA/LNB and BUC feeds, plug-in modules ........................................ 19
2.6
Module Interface ratings ....................................................................................................................... 19
2.6.1
Susceptibility to DC pulses from
ViaLiteHD
receivers ............................................................... 19
2.6.2
Protection of
ViaLiteHD
equipment from DC pulses .................................................................. 19
2.6.3
Logic interface, TTL 5V .............................................................................................................. 19
2.6.4
Logic interface, I2C .................................................................................................................... 20
2.6.5
Logic interface, Open Drain, output ........................................................................................... 20
2.6.6
Power interface, +12V, input...................................................................................................... 20
2.6.7
Analogue interface, laser diode bias, output ............................................................................. 20
2.6.8
Analogue interface, photodiode received light level, output ...................................................... 21
2.6.9
Internally generated LNB power supply and tone ...................................................................... 21
2.6.10
RF connectors ............................................................................................................................ 21
2.6.11
Optical connections .................................................................................................................... 21
