PPM ViaLiteHD HR-C-HB-3 Series Скачать руководство пользователя

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ViaLiteHD

C-Band RF Fibre Optic Link

User Guide

HRx-C-HB-3

CR4651

04/01/2021

Pulse Power & Measurement Ltd

, 65 Shrivenham Hundred Business Park, Watchfield, Swindon, Wiltshire SN68TY, UK

Tel +44 (0)1793 784389 Fax +44 (0)1793 784391 Email

[email protected]

Web

www.vialite.com

Содержание ViaLiteHD HR-C-HB-3 Series

Страница 1: ...ink User Guide HRx C HB 3 CR4651 04 01 2021 Pulse Power Measurement Ltd 65 Shrivenham Hundred Business Park Watchfield Swindon Wiltshire SN68TY UK Tel 44 0 1793 784389 Fax 44 0 1793 784391 Email sales...

Страница 2: ...e mains isolation switch which supplies the equipment ESD Precautions The ViaLiteHD RF Fibre Optic Link is equipped with high frequency active electronics without the correct handing they will be susc...

Страница 3: ...es 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...

Страница 4: ...f temperature on gain 24 3 5 Noise Figure 25 3 6 Linearity P1dB compression 25 3 7 Linearity IP3 intermodulation 25 3 8 Spurious Free Dynamic Range SFDR 26 3 9 Link delay 27 3 10 RF isolation 27 3 10...

Страница 5: ...h the RF signal which then travels through an optical fibre to the receiver module The distance between transmitter and receiver can range from 1m to 100km distances in excess of 100km can be achieved...

Страница 6: ...ers on the connectors may be left in place Push the release button of the module handle down and simultaneously pull the top of the handle towards you Align the module upright and perpendicular to the...

Страница 7: ...If any dust or dirt is visible within the connector body cleaning with compressed air before mating is advised When attaching cables to these RF connectors a torque wrench should be used to guarantee...

Страница 8: ...be cleaned before use even where they have been protected with dust caps A large percentage of performance issues can be attributed to dirty fibres For more details please read the cleaning instructio...

Страница 9: ...aked eye or an instrument unless you are convinced that there is no optical radiation being emitted by the fibre Remove all power sources to all modules and completely disconnect the optical fibres 2...

Страница 10: ...ill automatically disengage Push until a click is heard and the connector locks To disconnect To disconnect depress the lever at the rear of the connector and withdraw the connector The protective cov...

Страница 11: ...RMAL Flashing GREEN Programming Programming RED Not used Not used No light TX PSU fail RX PSU fail LED2 GREEN NORMAL Flashing RED fast TX Alarm Not used Flashing RED slow Not used RX Alarm RED Not use...

Страница 12: ...endent on the module that provides it The typical capability of the Open Collector Drain is 50mA maximum current sink and 15V maximum voltage Vext Note Modules fitted in a chassis may have their alarm...

Страница 13: ...e installed environment temperature is uncontrolled there exists the possibility that at high temperature operating efficiency will be reduced Furthermore if the active thermal control is unable to ma...

Страница 14: ...ely one third of its length Two sets of switches will be installed depending on the type of module Details of the function of each switch are given in the section below 2 4 2 Manual control DIP switch...

Страница 15: ...gain can be changed in nominal steps of 0 5dB For special manual gain control modules record the factory setting of each gain step this is the preset gain of the receiver RXMGC ON Manual gain control...

Страница 16: ...ol If you wish to use manual control we advise that you record the initial setting of each switch this is the preset configuration of the module SW3 control functions are common to the whole module Th...

Страница 17: ...power any connected equipment capable of receiving its power this way Warning Precautions must be taken to ensure that any connected equipment is tolerant of the DC voltages supplied 2 5 1 LNA LNB fe...

Страница 18: ...n external feed from the module connector LNA feed pin When using LNA LNB feeds care must be taken to allow for voltage drops through the input feed network as well as voltage drops in the output feed...

Страница 19: ...eiver modules will create a 1 2Vpeak DC transient from the RF output at start up into a 50 load approximately 5V into a 1M load This may cause failure in some very sensitive spectrum analysers or simi...

Страница 20: ...ted in a chassis with a controller card i e SNMP and web controller or summary alarm card the alarm lines maybe loaded and pulled up see chassis handbook Note When fitted in a chassis or enclosure adj...

Страница 21: ...Current rating 700mA per channel for single transmit channel Short circuit protection Yes Voltage BOOST active Nominal output Voltage increased 1V Output boost ENABLE Voltage when set to AUX Nominal...

Страница 22: ...rm output from TX and RX modules 3 LD_MON Receive Light Level monitor 4 SDA I2C Data connection 5 SCL I2C Clock input from master device 6 LNA_FEED Option for external LNA feed input on Optical TX mod...

Страница 23: ...rease if the fibre is under excessive tension compression or is bent into a small radius For clean undamaged single mode connectors optical insertion loss is typically 0 2dB per interface Note The los...

Страница 24: ...link pair TX 0dB RX 15dB 3 4 1 Effect of temperature on gain The gain of a ViaLiteHD C Band Link generally reduces as temperature increases The graph below shows change in RF gain versus the room temp...

Страница 25: ...or lowered as a trade off with noise figure when commissioning a system to best align with the signal levels present Below is the data for a High Gain link pair TX 0dB RX 15dB 3 7 Linearity IP3 inter...

Страница 26: ...en altering the gain of the transmitter in order balance the link Noise Figure and linearity the SFDR is largely unaffected Below is the data for a High Gain link pair TX 0dB RX 15dB 0 0 1 0 2 0 3 0 4...

Страница 27: ...ectric RG 59 4 1 ns per meter dependent on dielectric RG 213 5 1 ns per meter RG 316 4 2 ns per meter Delays quoted are typical for these cable types construction of cables of the same type will vary...

Страница 28: ...the C band The signal must be conveyed over 1500m of fibre through a bulkhead at each station to the modem An alarm must trigger if the optical path is damaged 1 Install the link connecting all optic...

Страница 29: ...utput from the receiver is correct to within measurement accuracy If the loss is much higher 3dB than calculated the most likely explanation is dirt on the optical connectors If this is the case clean...

Страница 30: ...HRX C HB 3 VIALITEHD C BAND LINK HANDBOOK 30 4 Part numbering For part numbering please refer to the relevant datasheet which can be found on our website or contact us...

Страница 31: ...nks Check all optical connectors are clean Low signal level Gain adjustment set too low RF feed not connected Optical loss too high Incorrect optical connectors Incorrect manual or software gain setti...

Страница 32: ...C Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate...

Страница 33: ...ns are available at the time of purchase Prior to returning any goods for warranty or non warranty repairs please contact PPM ViaLite Communications for a returns reference PULSE POWER MEASUREMENT LTD...

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