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Related Manuals for PPM ViaLiteHD HR-C-HB-3 Series
Summary of Contents for PPM ViaLiteHD HR-C-HB-3 Series
- Page 1 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 sales@vialite.com www.vialite.com...
- Page 2 -C-HB-3 V HD C-B ANDBOOK Instrument Care and Safety Information Please read the whole of this section before using your ViaLiteHD product. It contains important safety information and will enable you to get the most out of your Fibre Optic Link. Electrical Safety The ViaLiteHD chassis is a Safety Class 1 product (having metal case directly connected to earth via the power supply cable).
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Page 3: Table Of Contents
-C-HB-3 V HD C-B ANDBOOK TABLE OF CONTENTS INTRODUCTION ..........................5 The C-Band ............................5 Typical deployment ..........................5 Care of fibre optic connectors ........................ 5 SETTING UP AND UNDERSTANDING THE FIBRE OPTIC LINK ..........6 Module operation ........................... 6 2.1.1 5HP standard plug-in modules .................... - Page 4 -C-HB-3 V HD C-B ANDBOOK 2.6.12 Purple OEM module Connector ....................22 SYSTEM INTEGRATION ......................23 Link loss budget calculations ....................... 23 Optical loss versus gain ........................23 Optical loss versus noise figure ......................23 Gain ..............................24 3.4.1 Effect of temperature on gain ....................24 Noise Figure ............................
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Page 5: Introduction
RF analogue signals over long distances for the communications market. ViaLiteHD is a product brand manufactured by Pulse Power and Measurement Ltd (PPM). ViaLite Communications is a division of Pulse Power and Measurement Ltd (PPM). -
Page 6: Setting Up And Understanding The Fibre Optic Link
-C-HB-3 V HD C-B ANDBOOK Setting up and understanding the fibre optic link This section describes the connections between your RF fibre optic transmitter (electrical – optical converter) and receiver (optical - electrical converter) modules, and the operation of both modules in a system. -
Page 7: Rf Connectors
-C-HB-3 V HD C-B ANDBOOK 2.1.2 RF connectors ViaLiteHD C-Band link products are fitted with 50 Ohm female SMA connectors. The SMA connector is a semi-precision sub-miniature RF and microwave connector and to maintain performance up to 8GHz, ensure that when not in use, the supplied RF connector dust caps are fitted. If any dust or dirt is visible within the connector body, cleaning with compressed air before mating is advised. -
Page 8: Fibre Optic Cable & Connectors
-C-HB-3 V HD C-B ANDBOOK Fibre optic cable & connectors All ViaLiteHD RF modules use single-mode (9µm/125µm) cable terminated in a range of optical connectors detailed below. Cross-site fibre optic cables are available from ViaLite Communications as either standard patch leads or heavy-duty multicore cables. Angle polished (APC) and standard (PC) connector must not be confused. -
Page 9: Fc/Apc Connectors
-C-HB-3 V HD C-B ANDBOOK Module Female Receptacle Cleaning (only recommended if problems are being experienced) Either use an optical cleaning stick or twist a cleaning tissue to form a stiff probe, moisten either with IPA. Gently push the probe into the receptacle and twist around several times to dislodge any dirt. -
Page 10: Sc/Apc Connectors
-C-HB-3 V HD C-B ANDBOOK 2.2.5 SC/APC Connectors To connect SC/APC optical connectors follow these steps: Remove the plug protective cover. Align the connector keyway slot in the adaptor to the key of the plug. Gently push the plug-into the adapter until a click is heard and the connector locks. To disconnect follow these steps: ... -
Page 11: Using The Rf Link Module
-C-HB-3 V HD C-B ANDBOOK Using the RF link module 2.3.1 Connecting the module Connect the transmitter module to the power source, cross-site fibre optic cable and RF signal as described in section 2.1. The RF input signal applied to the signal connector should be within the maximum and minimum signal levels given in the datasheet. -
Page 12: Connecting To The Summary Alarm
-C-HB-3 V HD C-B ANDBOOK The summary alarm is indicated by use of open drain logic. The alarm logic is OPEN when in an ALARM state and SHORT when in a NORMAL (non-alarm) state. The module will remain in an ALARM state until the ALARM condition is cleared, there is no latching. -
Page 13: High Power And Dwdm Transmitter Modules, Thermal Load
-C-HB-3 V HD C-B ANDBOOK Function Single Transmitter Single Receiver Analogue monitor A Not Used Received light level Analogue monitor B Laser bias monitor Not Used The performance of the analogue monitors is as follows Monitor type Operation TX analogue, current = 25 x I monitor output = Voltage output of the current monitor, in volts... -
Page 14: Controlling Rf Modules
-C-HB-3 V HD C-B ANDBOOK Controlling RF modules ViaLiteHD RF links are factory set and ready to operate. However, they can be software controlled (where an SNMP module is used in the same chassis) or manually controlled via the DIP switches fitted on each module. -
Page 15: Dip Switches - Receiver Mgc
-C-HB-3 V HD C-B ANDBOOK SW1 Top DIP switch bank Single transmitter HRT Single receiver HRR Not fitted RXMGC RX – 0.5dB Not fitted RX – 1dB Not fitted RX – 2dB Not fitted RX – 4dB Not fitted RX – 8dB Not fitted SW2 Middle DIP switch bank Single transmitter HRT... -
Page 16: Manual Gain Control Example
-C-HB-3 V HD C-B ANDBOOK TXMGC ON = Manual gain control, OFF = Software control or at default setting TX – 0.5dB ON = Gain increased by 0.5dB nominal, OFF= no gain increase TX – 1dB ON = Gain increased by 1dB nominal, OFF= no gain increase ... -
Page 17: Changing Module Rf Gain
-C-HB-3 V HD C-B ANDBOOK ** Card must be powered to perform the reset action, removing power will also reset a module 2.4.3 Changing module RF gain The link performance specifications apply when modules are operated in the factory preset configuration. -
Page 18: Lna/Lnb Voltage Boost - Plug-In Modules
-C-HB-3 V HD C-B ANDBOOK 2.5.3 LNA/LNB voltage boost - plug-in modules The output voltage of any module equipped with an internal 13/18/22 volt power supply (option “5” and “L”) can have its output voltage increased to allow for cable losses, the output voltage is increased by +1V nominally. -
Page 19: Manual Configuration Of Lna/Lnb And Buc Feeds, Plug-In Modules
-C-HB-3 V HD C-B ANDBOOK External Feed from chassis connector 0 to +28V at 350mA Internally generated +13.4 ± 1 or +18.5 ± 1 selectable 350mA (up to 7.1GHz) Internally generated +13.4 ± 1 or +18.5 ± 1 selectable 700mA (up to 6.0GHz) 2.5.7 Manual configuration of LNA/LNB and BUC feeds, plug-in modules Some modules can be configured either by jumper or by switch to provide an LNA/LNB or BUC feed... -
Page 20: Logic Interface, I2C
-C-HB-3 V HD C-B ANDBOOK Output, Logic High (min) >4.8V no load Drive capability 1k ohms Short circuit protection 2.6.4 Logic interface, I2C Absolute maximum voltage rating -0.3 to +5.3V No damage Input, Logic Low (max) <1.5V Input, Logic High (min) >3.5V Output, Logic Low (max) <0.6V no load... -
Page 21: Analogue Interface, Photodiode Received Light Level, Output
-C-HB-3 V HD C-B ANDBOOK 2.6.8 Analogue interface, photodiode received light level, output For details of operation see 2.6.8 Typical output voltage 4.0V at 10 dBm optical input power Typical output voltage range 1 to 4V Maximum output voltage range 0 to +5V Short circuit protection 2.6.9... -
Page 22: Purple Oem Module Connector
-C-HB-3 V HD C-B ANDBOOK 2.6.12 Purple OEM module Connector Pin Number Signal Name Description 1 12V_IN 12 Volt input, 11.5V to 13V nominal, 2A rated 2 TX/RX Alarm Alarm output from TX and RX modules 3 LD_MON Receive Light Level monitor 4 SDA I2C Data connection 5 SCL... -
Page 23: System Integration
-C-HB-3 V HD C-B ANDBOOK System integration Link loss budget calculations The link gain (transmitter RF input level to receiver RF output level) depends on the following factors: Optical loss (due to connector insertion loss and optical fibre loss). ... -
Page 24: Gain
-C-HB-3 V HD C-B ANDBOOK Gain The Gain of a ViaLiteHD C-Band Link is generally consistent with frequency in the designated downlink and uplink bands. Useable gain and performance can be found in a wide range from 500MHz to 8 GHz. Below is the data for a High Gain link pair (TX=0dB, RX=15dB) ViaLite Link: Frequency response 2.00 1.00... -
Page 25: Noise Figure
-C-HB-3 V HD C-B ANDBOOK Noise Figure The noise Figure of a ViaLiteHD C-Band Link generally increases with frequency resulting in a lower noise figure for the downlink than the uplink. The nominal Noise Figure can be raised or lowered as a trade off with linearity when commissioning a system to best align with the signal levels present. -
Page 26: Spurious Free Dynamic Range (Sfdr)
-C-HB-3 V HD C-B ANDBOOK ViaLite Link: IP3 1 0 0 0 2 0 0 0 3 0 0 0 4 0 0 0 5 0 0 0 6 0 0 0 7 0 0 0 8 0 0 0 Frequency (MHz) Spurious Free Dynamic Range (SFDR) The SFDR of a ViaLiteHD C-Band Link is generally lower at higher frequencies due to the impact of... -
Page 27: Link Delay
-C-HB-3 V HD C-B ANDBOOK Link delay The ViaLiteHD link introduces a small amount of delay to the system, similar to the contribution of an amplifier. The typical delay contribution is shown below. You should also account for delay through RF and fibre cables as these are likely to be much higher than the delay in the link fibre optic modules. -
Page 28: Typical System Configuration With Fixed Gain Modules
-C-HB-3 V HD C-B ANDBOOK 3.11 Typical system configuration with fixed gain modules The diagram below illustrates a typical communications system configuration. RF feeds for Antenna SSPA and LNA ViaLiteHD chassis Patch cables Cable Termination box Cross site cable Cross site cable Cable Termination box Patch cables ViaLiteHD chassis... - Page 29 -C-HB-3 V HD C-B ANDBOOK 5. Confirm that the RF output 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 each connection in turn until the required system gain is restored.
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Page 30: Part Numbering
-C-HB-3 V HD C-B ANDBOOK Part numbering For part numbering please refer to the relevant datasheet which can be found on our website or contact us. -
Page 31: Maintenance And Fault Finding Guide
-C-HB-3 V HD C-B ANDBOOK Maintenance and fault finding guide Refer to the following table that gives a list of commonly encountered problems and suggested solutions. Fault Possible Causes Solution Power LED does Power is not connected to the Connect mains power to the rear of the PSU. not illuminate. -
Page 32: Fcc Approval
-C-HB-3 V HD C-B ANDBOOK FCC Approval Information to the user of ViaLiteHD products: For a Class A digital device or peripheral, the following instructions are furnished to the user. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. -
Page 33: Product Warranty
F292 - PPM Manufactured Product – Warranty, which is available at: https://ppm.co.uk/warranty- periods/. Extended warranty options 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.
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