Volamp User Manual
Contents
1. Volamp CAIVILINX User Manual Ce CAMLINX Page 1 of 25 VoLAmp YR MN Disclaimer All information contained in this manual is believed to be accurate and reliable However Volamp Ltd assumes no responsibility for its use Since conditions of product use are outside our control we make no warranties express or implied in relation thereto We therefore cannot accept any liability in connection with any use of this information This product is not intended for use in life support appliances devices or systems where a malfunction of the product can reasonably be expected to result in personal injury Use of any Volamp product in such applications is expressly prohibited Whilst every effort has been made to ensure that this document is correct errors can occur If you find any errors or omissions please let us know so that we can put them right Laser Safety CLASS 1 LASER PRODUCT Invisible laser radiation Class 1 lasers are used in this product for fibre optic communications The wavelength used is in the infra red band so the light emitted cannot be seen Although the levels are low and are classified as safe under all conditions of normal use we recommend that users avoid looking directly into the beam Trademarks Camlinx is a trade mark of Volamp Limited Opticalcon is a registered mark of Neutrik AG CAMLINX Page 2 of 25 VoLAMp YR Volamp Camlinx User2. Manual Contents PIS e aL erorrek EnEn E E E aN EEEO EGNE S 2 Volar Camlinx User Manvel iiccccenstnedssocsaguatevccdvasconsesdavenseanaonendeumeasconsedesdbesrcanse 3 COVER VIEW css dalcbecuiesoidvad Eon NEE E EE E N a EEE A EEEE 4 1 1 Pack Contents a a a dace 4 Let SY lt T nne w iin E E EE DE AE ONE EER 5 1 3 Base Station COnnectiOnS ce ce x x x x K x eK KKK 6 1 4 Head CONNECTIONS isssasnaiaaneuadudaciesbeeanaadyacanaseacsinadansnieewedeaesnbbunerdanathamnsadueeen 7 1 5 ae Nv Ll 8 1 6 On Screen DiISplIay css grca YARN RNA 9 RUR UR RR RN STER RENER ARR RAR aaa 10 Sele ANG eh ese c nn E E EE aU EREE ENE E Eaa 12 K Se eT 12 2 2 H L nae Black and He c 13 2 73 Talk DECK ienne aneen E E EEE E EE a CEEE 14 2 4 S rial Datak T 15 2 4 1 OVerNYIeWw sss s e x x e x e x eee 15 A R TX a d RX TTT 15 K e Base 15T e l 15 24 Camera s e HT 16 Zo TT 17 2 5 1 OVOIVIEW icccicsecuicnnzecesveiueuldsnsscactensiandccdeciudciacesaqndseceiasedatstieceinecasduazeiened 17 2 5 2 Base SlLAUON cscccnctseuedcxenaseaaaeansesannndensedaanisateracsaseseuanaensumaaaersunaanesauns 18 2 573 Head Wirin l lt T 18 2 5 4 Built In Tally Lightiissccwssoesisinds su aaa E AAR EE 18 25 5 Tally T St siririn A AEEA 18 3 POWE SYSTEM TTT 19 3 1 Introducti M iessc2ccceceraennaceniwnmesensessesasaraqiiavenereanuraanseopensnansasaasasanaanieaeeenes 19 3 2 Using 48V elei cT 19 3 3 Using local POWER T 20 4 Fault nding sss sss ecce eee 21 A Fibre 2 ss nciccaces
3. three usual causes Link Test Link Test Link Test Link Test Stage 2 Stage 3 Stage 4 Stage 5 Local loopback 1 Broken fibre 2 Dirt 3 Badly seated connectors 6 Available from your distributor or as part of the Camlinx service kit CAMLINX Page 22 of 25 VoLAmP LTD A The first can only be fixed by replacing the fibre The second can be remedied cleaning tools available in our service kit The last is more likely with LC type connectors used for installed fibre than with Opticalcon and can often be fixed by removing and re mating the connectors The last link in the chain is the connector on the head unit itself and this can be checked in the same way as the connector on the base station was checked in step 1 As we are now using a another light source that in the head rather than the base station the fibre rx level may be different It should be checked against the test sheet for the head CAMLINX Page 23 of 25 VoLAMP LD TMN 4 2 Power system The Camlinx 48 volt power system is designed to solve the problems encountered when using long cables to provide 12V power to Cameras We recommend therefore that the 48V system is used wherever possible 4 2 1 48 Volts system The 48 volt system is designed to deliver 60 Watts 5 amps at 12 vo Its Attempting to draw more power than this will cause the unit to cut out If you have problems first check that the 48V supply is on Next c
4. There are two lights on the front panel to show that the 48 volt supplies are on Both will light up on units with a redundant supply fitted and only one will illuminate otherwise A load meter is provided Light Power Illuminates at gt 88 Watts Overload Illuminates at gt 60 Watts Illuminates at gt 30 Watts Illuminates at gt 1 Watt The head uses 8 Watts and can provide 60 Watts to the camera This gives a total of 68 Watts Some power will also be lost in the cabling so the base station can deliver up to 88 Watts of power CAMLINX Page 19 of 25 VoLAMP LD TMN 3 3 Using local power Local power can be provided by a battery through the PAG clip on the back of the Camlinx Head or it can be provided through the XLR connector The external power connector is a 4 pin male XLR Pin Function Ground AWIN Fe 12 to 18 Volts DC The Camlinx head will operate on any supply voltage from 9 7 Volts to 18 Volts DC We recommend 12 Volts as a minimum because some cameras have problems operating at lower voltages Pin 1 is connected internally to the chassis Don t get caught out by Voltage Drop on 12V Cabling Users should be mindful of potential problems when attempting to carry power to camera over coper wires at 12 Volts even over relatively short distances For example a camera and viewfinder combination can con
5. amera 60 Watts max Base Station A Camlinx system is composed of a base station and a head A single cable connects the two ends It contains two fibres and optionally two copper cores Each of the fibres carries information One from the base station to the head the other from the head to the base station The copper cores carry power from the base station for the head If they are not present then a local power supply must be used at the head see section 3 TDM technology in the Camlinx is used to mix all of the different inputs into a single fibre optic signal to be carried down the link The signal is separated at the far end of the link and fed to the various outputs The link carries the following signals in both directions e SDI Video HD or SD e 2 Channels of serial data e Talk back In addition the following signals are carried from the base to the head e Tally on air light e Tri level sync Black and burst CAMLINX Page 5 of 25 VoLAMP LTD 1 3 Base Station Connections T VoLAmP trp CAMLINX SDI Video output SDI Video input Serial 1 connector Serial 2 connector Button A change page Button B adjust setting LCD display Tally input 110 230V AC input 10 Opticalcon combined connector for power and fibre connections to the head Talk back socket OLD NID A E LIM E Ha Ha e N 48 volts output
6. be altered CAMLINX Page 12 of 25 VoLAMP LD TMN 2 2 Trisync Black and Burst This link is to allow gen locking of cameras A sync signal is connected to the sync input on the base station it will come out of the sync output at the camera head The following types of signal can be carried e Tri level HD Sync e Black and burst The OSD shows whether a signal has been detected at the sync input The blue screen given out when no video is available will sync to a black and burst input on this socket Note that this link will not carry an analogue video picture 3 The colour burst will be removed from the signal The colour burst is not used on modern TV Cameras CAMLINX Page 13 of 25 VoLAMP LD TMN 2 3 Talk back The talk back system allows communication between a 3 party intercom system at the base station end Clearcomm RTS etc and the camera man s headset at the head System Camlinx Talk Back 3 Party Intercom System Line level Mic level Headphone level signals signal signal Camlinx gt Base Station Camlinx Head Head end pin connections end 5 pin XLR connectors are used at both ends Connection to an intercom system is via a 4 wire interface with a signal level of 1V peak to peak OdBu Connection of a headset at the head end is via a 5 pin XLR connector At the head end a knob is provided to adjus
7. decoded and thus the fibre level at the remote end cannot be read Unknown will be displayed See section 4 1 for more about fibre levels VID IH FORMAT The format of the SDI video input is shown This is auto detected and cannot be set VID OUT FORMAT The format of the SDI video output is shown This is auto detected and cannot be set STATUS SCREEM This controls the OSD see section 1 6 The OSD can be set to any of three modes Always on Tally Safe Off In the tally safe mode the OSD is on unless the tally is set This is to prevent the OSD from accidentally being shown in the live mix EA TEMDED MENUS Yes to make all menu pages available No for a limited set of menus TALLY TEST LLL Holding button B in this mode will cause the tally light to flash and the base station to click Both ends will respond to this function SERIAL 1 MODE SERIAL 2 MODE These pages switch the serial ports between RS232 and RS422 mode It should be noted that the setting affects the local end only For example if this setting is used on the base station to set serial port 1 mode to RS422 it will have no effect on the setting for serial port 1 at the camera head For more information on the serial link see section 2 4 SERIAL STATE This shows if any transitions have occurred on the serial links in the last 2 seconds TALEBACK IH LVL This shows a bar graph corresponding to the peak am
8. e information see section 2 4 Temp tells you the temperature of the laser unit in the fibre optic transmitter Very high ambient temperatures can affect the laser and thus fibre optic performance Tally and sync are special cases The signals only go from the base to the head They appear only in the local end column with slightly different meanings on the base and the head as follows e Onthe base Tally ON means that the tally has been triggered through the tally input port LINX Page 10 of 25 e Dn the head Tally ON means that the tally has been triggered at the base station and that the tally output at the head is switched on e On the base Sync Trisync Black amp Burst means that a sync input has been detected and is being transmitted to the head e On the head Sync Trisync Black amp Burst means that a sync signal is being received from the base and is being sent out to the sync out connector Remote end info tells you about the other end i e at a base station it tells you about the camera head and vice versa If there is no remote end connected or there is a problem with the fibre carrying information from the remote end then this information is not available and Unknown will be shown CAMLINX Page 11 of 25 VoLAMP LD TMN 2 Signals 2 1 Video The Camlinx carries one SDI video stream in each direction It does not support analogue video of any type composite compon
9. ent etc It does not support multiple channels of video in either direction A video signal connected to the base station s video in socket will appear at the head s video out socket and a video signal connected to the head s video in socket will appear at the base station s video out socket The total delay of the system is less than one video line No data rate reduction techniques are used this means that the video signal is not altered in any way by passing it through the Camlinx system Ancillary data in the video signal will be carried through unchanged by the Camlinx A blue SD SDI screen PAL 501 is given at the video output when no video is available No video is available when e No video is connected to the remote end s video input e There is no fibre connection Video Standard Supported SD SDI 270MBit PAL Yes SD SDI 270MBit NTSC Yes HD SDI 1485MBit 1080 50i 25p 60i 30p 24p Yes HD SDI 1483MBit 1080 59 9i 29 9p 23 9p Yes HD SDI 1485MBit 720 60p Yes Composite No Component No 3G SDI No The two video streams one each way are completely independent and do not need to be of the same standard or locked to a related timing source When the video is first connected or if the video standard or timing source changes the Camlinx may take a few seconds to correctly sync to it During this time the video signal may be disturbed 2 If OSD is on then the video picture will
10. er For example YID IH FORMAT HD 192p Sel In this case the top line tells you that you are looking at the input video format and the bottom line tells you what the format is HD 1080 5O0fields sec interlaced Button A is associated with the top line of the display so pressing it cycles through the display pages Button B is associated with the bottom line of the display so pressing it changes the value of the parameter when a setting is shown If the page shows something which cannot be set button B has no effect The menu system can be set to consist of the 6 most commonly used pages or an extended set of 15 pages The Extended menus option switches between the two Each of the menu pages is described below Page Details FIERE Ex This gives a bar graph of the signal strength on the fibre inputt See section 4 1 for more about fibre levels 1Each block corresponds to approximately 26uW CAMLINX Page 8 of 25 VoLAMp LTD REMOTE FIBRE Rx This gives bar graph of the fibre level being received at the remote end i e On the base station it shows the level being received at the head and on the head it shows the level being received at the base station A good link is needed from the remote end for this function to work for example for this function to work on the base station a good signal from the head is needed If a signal from the remote end cannot be
11. heck the power power meter If no lights are on the head isn t connected There is continuity problem check your cable and connectors If only the bottom light is on only the head is powered check your equipment is switched on If all lights are on including the red light at the top the power supply is overloaded An overloaded power supply can be a result of 1 A short circuit check your cables and connectors 2 Too much equipment being plugged into the head 3 Inrush problems Inrush problems occur because some equipment uses vastly more power at the moment it is switched on than it does subsequently If a number items are being powered by the Camlinx head it may be possible to run them all if they are switched on in turn rather than all at the same time 4 2 2 12 Volts system Be mindful of potential problems when attempting to carry power to camera over coper wires at 12 Volts even over relatively short distances See section 3 3 for more details 4 2 3 Low Battery Warnings with 48V power When operating on the 48Volt power system the Camlinx head delivers about 12 9V through the PAG plate to the camera This is enough to power all modern camcorders A Camera cannot tell the difference between a Camlinx and a battery If the threshold for the low battery voltage warning on the Camera is set to above 12 9 Volts then the low battery warning will appear when the Camlinx is used To get rid of this warning the
12. hs the worst loss we d expect in any Camlinx installation would be one or two blocks 4 1 3 Measuring Loss In this example we will consider how to check a fibre link in a typical studio set up but the techniques used can be applied in any environment studio ENG OB etc In this 5 This is why we guarantee only a minimum level 10dBmW and not a typical output power CAMLINX Page 21 of 25 VoLAMP LD TMN set up the Camlinx base is connected to a patch panel A long installed fibre runs from said patch panel through to a patch panel in the studio A cable then connects the studio patch panel to the Camlinx head Traditionally fibre optic cables are tested with a Typical Studio Link Test light source and light meter A Camlinx unit Installation Stage 1 can act as both of these for you The first step of testing is to check that the Opticalcon connector on the rear of the base Control room station is clean patching A loop back connector is connected to the rear of the base station A Fibre Rx Level reading is Cables then read from the LCD on the front of the unit installed in building The fibre RX level here should match that shown on the unit s factory test sheet supplied with the unit If it does not then the connector should be cleaned The next steps 2 3 4 are to check the link one leg at at time isolating any problems that may occur If you find losses there are
13. m W Volume Knob m D Sync input e Ul 48V power on indicators KA G Power meter CAMLINX Page 6 of 25 VoLAMP LTD A 1 4 Head Connections SDI Video output SDI Video input PAG lock plate for connection to camera PAG lock plate for connection to battery Button A change page Button B adjust setting LCD display Built in tally LED OlLOIN ID Un 1 BRI UIN A External power input socket 10 Serial data socket Headphones socket m N Tally socket m W Volume Knob e gt Sync output CAMLINX Page 7 of 25 VoLAmP LTD WN 1 5 LCD Menus The Camlinx menu system is the same on the base station as the head It is composed of an LCD screen and two buttons The purpose of the system is to to enable the user change settings and to provide useful information LCD Menu Se about the state the Camlinx system An on screen display can be enabled on the video output from the system The purpose of the OSD is to provide useful information about the state of the Camlinx system The LCD display system is divided into pages Each page tells you about a particular setting or parameter The top j VoLAMP iA line of the LCD display line 1 tells you which page you are ene CAMLINX on The second line line 2 shows a value for that setting or paramet
14. plitude of the audio input from the talk back socket TALEBACK OUT LWL This shows a bar graph corresponding to the peak amplitude of the audio output from the talk back socket i e it shows the level of audio being output This is the audio which comes into the system at the audio input at the remote end DZD SIZE Two sizes are available for the OSD big or small DIAGHOSTICS This shows technical information which can be useful to Volamp for diagnosing fibre optic problems or misbehaviour from equipment connected to the Camlinx CAMLINX VoLAmP LTD A Page 9 of 25 1 6 On Screen Display The on screen display gives information about the current state of the Camlinx system Settings cannot be changed through the OSD System status hint Local end info ia THIS END REMOTE END SD 625 501 The system status hint gives a summary of the current system status It will tell you if there is no video plugged in at the remote end or if there are fibre optic problems Local end info tells you about the end nearest to you Fibre Rx shows a bar graph of the fibre receive level Due to space limitations one block is shown here for every 2 on the LCD Vid In tells you what the format of the video connected to the video in socket is Talk tells you what the input talk level is Ser 1 and Ser 2 tell you whether transitions have been detected on the serial interfaces For mor
15. r building has 9 um single mode fibre installed and the cable runs are less than 2km then you can use them with Camlinx 4 4 Linking My Camera Remote Pan and Tilt Intercom Unfortunately we cannot provide free support to individual users for every type of equipment that they may ever wish to connect with a Camlinx However where we do have experience of interfacing to specific equipment we will publish relevant details on our web site in the form of application notes These are also available through your dealer who will be happy to help with any interfacing problems you have CAMLINX Page 25 of 25 VoLAMP LD TMN
16. scaecueccetetecen pnwenietatassetetassestetaueusueesaaebinaigaradsteineeececahedas 21 4 2 POWEr SYSLEMM osisencvscreniincendcansansananensmnvadeeseemeeaineenrasumeneencnenerereuauaatecesenax 21 4 3 Can I use the Camlinx with the existing Fibre at my Site ecce e e eee 21 4 4 Linking My Camera Remote Pan and Tilt INtercomM cccceceeeeeeeeeeeaees 21 CAMLINX Page 3 of 25 VoLAmMp LTD 1 Overview The Camlinx is a system for connecting HD and SD SDI Cameras to a production area using fibre optic cables This manual describes how to use the Camlinx 1 1 Pack Contents Every Camlinx system includes the parts listed below e Camlinx Base Station consisting of o Rack mount base station unit with mounting ears o Power cable suitable for your country e Camlinx head o Camlinx head unit o Rugged carrying case Your dealer may have supplied e Fibre optic cables e Interfacing cables to connect your Camlinx system to your other equipment e Other accessories These are not detailed in this manual so please contact your dealer if you require more information CAMLINX Page 4 of 25 VoLAmMp YR 1 2 System Overview Camlinx System SDI Video SDI Video Tally Tally Sync Sync Talk back in Talk back phones Serial tx Serial rx Serial tx Serial rx SDI Video SDI Video Talk back out Talk back mic Serial rx Serial rx Serial rx Serial rx 12V Supply for C
17. sing between A and B stops then the built in tally light will extinguish and the connection between C and D will be opened CAMLINX Page 17 of 25 VoLAMP LD TMN 2 5 2 Base Station The tally is activated via a 15 pin d type socket on the rear of the base station To trigger the tally apply a voltage of between 5 and 12V DC between pins 5 and 134 A 5V supply is provided between pins 8 and 15 for convenience but any supply can be used to trigger the tally Looking into socket 8 5V e2660 sH 5 Opto isolator pin A 5 4 3 2 O 10 9 13 Opto isolator pin B To trigger tally pass current between pins 5 and 13 2 5 3 Head Wiring The contact closure for the tally is accessed via a 6 pin HiRose connector on the camera head unit A 5 volt power supply is provided for convenience Looking into socket 1 Relay pin C Clip fitting is on outside of socket 2 Relay pin D housing above pin 5 away from Co 3 OV 4 5V 5 and 6 Not connected Towards sync Pins 1 and 2 are connected while tally is connector triggered otherwise they are open circuit 2 5 4 Built In Tally Light There is a built in tally light on the top of the camera head unit It can be muted by pressing it downwards 2 5 5 Tally Test To test the tally contact closures and built in tally light the Tally Test Call function should be activated It can be activated from either the base station or
18. sume over 50 Watts This leads to a current of 4 Amps Because the initial voltage is relatively low the effect of voltage drop along the cable becomes very significant Typically losses for a given length of cable at 12V as a proportion of the original voltage will be equivalent to those of 19 times the length of the same cable at 230V That is to say a 25M camera lead of a given core diameter will lose as much voltage proportionally as a 475M mains extension lead We therefore advise users to use the 48V link where possible Otherwise it is important to calculate out losses in any 12V system and not rely on intuition Users should remember that cable losses are proportional to load and therefore that a cable which delivers a perfect 12V before the load is applied may be providing a significantly lower voltage once things are switched on CAMLINX Page 20 of 25 VOLAMP LTD A 4 Fault finding 4 1 Ensuring good fibre connectivity 4 1 1 Introduction It is of paramount importance that a good fibre optic link is established between the head and the base station Fibre optic related problems can cause loss of connectivity in either or both directions Worst of all fibre optic problems can cause intermittent errors across all of the interfaces The aim of this section is to explain how you can tell a good link from a bad one and what you can do if you find link problems 4 1 2 Things you need to know Before
19. t Data In gt gt Data In a 1 Data Out 2 4 3 Base Station Looking into socket Aux supply OV TX RS232 RS422 RX RS232 RS422 Aux supply 12V Data Ground No connection TX RS422 only RX RS422 only No connection ROROA B I 6 O GQ G E M A The load on the 12V power supply must not exceed 100mA 1 2 Watts for each socket CAIMLINX Page 15 of 25 VoLAMP LTD TMN 2 4 4 Camera Head Looking into socket Towards tally socket Serial A 1 Rx RS232 RS422 2 Rx RS422 Only 3 Gnd 4 Tx RS232 RS422 5 Tx RS422 Only Serial B 7 Rx RS232 RS422 8 Rx RS422 Only 9 Gnd 10 Tx RS232 RS422 11 Tx RS422 Only CAMLINX Page 16 of 25 VOLAMP LTD A 2 5 Tally 2 5 1 Overview Camlinx Tally System Base Station The tally system is used to provide an on air indication at the camera head The signal is activated at the base station Such an activation is indicated at the head by means of 1 A built in tally light 2 A contact closure for triggering external equipment Activation at the base station is achieved by passing current between pins A and B This turns on a light inside the base station which is detected in order to activate the system The built in tally light will illuminate at the head and the connection between C and D to be closed When the current pas
20. t the volume of the headphones At the base station a knob is provided which adjusts the level of the signal from the base station to the intercom unit This effectively sets the gain of the camera operator s microphone Pin Head End Function Base Station Function 1 Microphone Audio in 2 Microphone Audio in 3 Ground screen Ground screen 4 Headphones R Audio out 5 Headphones L Audio out 5 Pin XLR socket pin numbers CN D CAMLINX Page 14 of 25 VoLAMP LID A 2 4 Serial Data 2 4 1 Overview The Camlinx provides two identical full duplex serial links They can carry data at any data rate up to 500KBit second and can be switched to operate according to the RS232 or RS422 standards Connection is via a single 12 pin HiRose connector on the camera head which contains pins for both links and a 9 pin D Type connector on the base station for each serial link The base station connectors feature auxiliary 12 volt power pins These are for powering equipment connected to the serial port e g camera remote control units 2 4 2 Tx and Rx Pins named Rx are inputs into the camera head or base station and Tx are outputs This means external equipment should drive into the Rx pins and be driven from the Tx pins Rx on the camera head drives Tx on the base station and vice versa Data In gt Data In Data Out lt Data Ou
21. the camera head 4 Polarity is not important i e it doesn t matter which way round positive and negative are CAMLINX Page 18 of 25 VoLAMP LD TMN 3 Power system 3 1 Introduction This section is concerned with the options for powering the Camlinx Head and powering Cameras through the Camlinx Head Cable Types There are two basic types of cable which can be used to connect the head to the base station aK 1 Hybrid cable 2 Optical cable Hybrid Cable Optical fibres to carry data There is a power supply in the base station which when Copper cores for power hybrid cable is used can power the head and provide 60 watts of power to a camera connected to the head In standard optical cable there are no copper cores so the head must be powered by an alternative method The __ Optical Cable PAG lock on the head allows a battery to be used Optical fibres to carry data The 12V in socket allows an external power supply to be used 3 2 Using 48V power The Camlinx power link operates at 48 v T volts DC The power comes from 48 volt OLAMP LTD Supply in the base station and is converted down to 12 volts at the head CAVV 5 NX 2 Up to 60 watts 5 Amps can be supplied o a Camera over a distance of up to 200 meters Base stations are optionally supplied with a redundant 48V power supply fitted This is indicated by a label saying Dual supply fitted on the front panel
22. warning threshold should be changed For more information on how to do this contact your camera dealer or manufacturer It should be noted that camcorders work perfectly well while a low battery warning is being displayed and that most cameras don t cut out until well below 11 volts The Camlinx therefore has plenty of headroom CAMLINX Page 24 of 25 VoLAMP YR 4 3 Can use the Camlinx with the existing Fibre at my site Not all optical fibres are the same Camlinx uses 9 um single mode fibre To put this in context the diameter of human hair averages out at about 100 um This is the thinnest type of fibre commonly in use The benefit of such a small diameter is good bandwidth performance Many buildings have multi mode fibre installed which has a larger diameter 62 5um This is often used for Ethernet equipment Single and multi mode fibre are not compatible with one another Other types of fibre commonly used are 50um multi mode 85um multi mode 200um PCS plastic clad silica and plastic light pipe used for consumer AV equipment None of these are compatible with Camlinx The Camlinx requires a direct optical connection from base to head and the signal will not pass through fibre optic switching equipment such as ethernet hubs SMPTE video switches etc The maximum fibre length for the Camlinx is 2000m If a greater reach is required please contact Volamp Ltd to discuss 15km and 80km options If you
23. we can look at how to check a link it is important to understand what you are looking for Why do I get different Fibre Rx Levels on different links Lasers are used as the light sources in the Camlinx system Lasers are inconsistent and differences between lasers are the main reason for different levels observed on the received power bar graph The photo diodes used on the fibre optic input stage also have some inconsistency What Level should I look for The most important thing for a user to understand is that there is a little more to it than just levels and it is not possible to gauge the quality of the link from the received fibre optic level alone There are two things which you need to look for when you are checking a link e Continuity problems e Unexplained losses Continuity problems are those which result in a total loss of signal An unexplained loss is a reduction of signal strength not consistent with the length of the link and the number of interconnections So what kind of loss should I get Connector losses are low The maximum for a Neutrik opticalcon Connector is 0 5dB This means that in the worst case the signal level should half for every 6 connectors Cable losses are also low typically 0 2 0 4 dB per km A typical installation will have no more than 200M of cabling and 2 or 3 connectors per path The total loss will then be just over 1dB in the worst case usually less In terms of the Tx Rx bar grap
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