VIALITEHD-BLUE2-LINK-HANDBOOK-HRX-XX-8X-35-XXXXX
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TABLE OF CONTENTS
1INTRODUCTION.............................................................................................................................5
1.1.1 HRX-L1-8P-33-S1310.................................................................................................................. 5
1.1.2 HRU-G1-8P-10-S1310................................................................................................................. 5
1.1.3 HRU-L3-8P-35-W1310-1550....................................................................................................... 5
1.1.4 HRV-L3-8P-03 ............................................................................................................................. 5
1.2 Blue2 Link............................................................................................................................................... 5
1.3 Typical deployment ................................................................................................................................ 5
1.4 Care of fibre optic connectors................................................................................................................ 6
2SETTING UP AND UNDERSTANDING THE FIBRE OPTIC LINK.................................................7
2.1.1 RF connectors.............................................................................................................................. 7
2.1.2 Blue2 Link Module ....................................................................................................................... 7
2.2 Fibre optic cable & connectors............................................................................................................... 9
2.2.1 Connecting and disconnecting..................................................................................................... 9
2.2.2 Cleaning optical connectors, cleaning before every use ............................................................. 9
2.2.3 Cleaning optical connectors, high levels of contamination.......................................................... 9
2.2.4 FC/APC Connectors .................................................................................................................. 10
2.2.5 SC/APC Connectors.................................................................................................................. 11
2.2.6 E2000/APC Connectors............................................................................................................. 11
2.2.7 Minimum bend radius................................................................................................................. 11
2.3 Using the RF link module..................................................................................................................... 12
2.3.1 Connecting the module.............................................................................................................. 12
2.3.2 LED indicator, purple modules................................................................................................... 12
2.4 Module Interface ratings....................................................................................................................... 12
2.4.1 Susceptibility to DC pulses from ViaLiteHD receivers............................................................... 12
2.4.2 Protection of ViaLiteHD equipment from DC pulses.................................................................. 12
2.4.3 Logic interface, TTL 5V.............................................................................................................. 12
2.4.4 Logic interface, I2C.................................................................................................................... 13
2.4.5 Logic interface, Open Drain, output........................................................................................... 13
2.4.6 Power interface, +12V, input...................................................................................................... 13
2.4.7 Analogue interface, laser diode bias, output ............................................................................. 13
2.4.8 Analogue interface, photodiode received light level, output...................................................... 13
2.4.9 RF connectors............................................................................................................................ 14
2.4.10Optical connections.................................................................................................................... 14
2.4.11Blue2 Link OEM module Connector .......................................................................................... 15
3SYSTEM INTEGRATION..............................................................................................................18
3.1 Link loss budget calculations ............................................................................................................... 18
3.2 Optical loss versus gain ....................................................................................................................... 18
3.3 Optical loss versus noise figure ........................................................................................................... 18
3.4 Gain versus frequency response ......................................................................................................... 19
3.5 P1dB versus transmitter gain............................................................................................................... 20
3.6 P1dB versus receiver gain ................................................................................................................... 22
3.7 P1dB, key observations ....................................................................................................................... 24
3.8 Noise figure versus transmitter gain .................................................................................................... 24
3.9 Noise figure versus receiver gain......................................................................................................... 25
3.10 Noise figure, key observations............................................................................................................. 25
3.11 Link IP3 ................................................................................................................................................ 25
3.12 Spurious free dynamic range............................................................................................................... 26
3.13 Phase noise ......................................................................................................................................... 26
3.14 Link delay............................................................................................................................................. 29
3.15 Group delay.......................................................................................................................................... 29
3.16 Effects of temperature.......................................................................................................................... 30
3.16.1Effect of temperature on gain .................................................................................................... 30
3.16.2Effect of temperature on noise figure......................................................................................... 32
3.16.3Effect of temperature on P1dB .................................................................................................. 32
