VIALITEHD-BLUE2-LINK-HANDBOOK-HRX-XX-8X-35-XXXXX
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TABLE OF CONTENTS
1 INTRODUCTION ............................................................................................................................. 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
2 SETTING 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
2.4.10 Optical connections .................................................................................................................... 14
2.4.11 Blue2 Link OEM module Connector .......................................................................................... 15
3 SYSTEM 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
3.16.1 Effect of temperature on gain .................................................................................................... 30
3.16.2 Effect of temperature on noise figure ......................................................................................... 32
3.16.3 Effect of temperature on P1dB .................................................................................................. 32
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