Cove Communications SILVERLINE VTx User Manual Download Page 6

 

SILVERLINE  VTX  03/09/08 User Guide  Issue1                                                                 

                                                       Page 6

  

The  AGC  therefore  offers  to  the  installer  many  benefits  provided  that  the  video  signal 
presented to the transmitter has the correct sync to peak white video relationship.   
The  AGC  fully  compensates  for  the  loss  in  the  fibre  optic  cable  and  no  amplification  or 
frequency response equalisation is required.  
 

 
6. INSTALLATION

 

 

THIS  EQUIPMENT  IS  NOT  WATER  PROOF  AND  MUST  NOT  BE  USED  OUTDOORS 
UNLESS PROTECTED BY A CLIMATIC HOUSING

THE  FOUR  SCREWS  AROUND  THE  BNC  CONNECTOR  MUST  NOT  BE  REMOVED 
UNDER  ANY  CIRCUMSTANCES.  THESE  SCREWS  DO  NOT  GIVE  ACCESS  TO  THE 
INSIDE OF THE UNIT. 
 

6.1 Installation Records 

 

NOTES

 

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6.2 External use 
 

If this fibre optic video transmitter is to be used with a video camera mounted in the open, 
it should be fitted into the climatic enclosure along with the camera. If the video camera 
has a pan tilt and zoom pedestal, it is recommended that the Video SILVERLINE is 
mounted to a fixed position and a special flexible video coaxial cable used for the camera 
connection. This is because fibre optic cable, although quite flexible, is not ideal for this 
application as the specialised coaxial types.  
 

 
        6.3 Power Requirements 

 

The video 

SILVERLINE

 may either be powered by the host equipment or from an external 

12V D.C. supply. 
 
The D.C. supply must be between 12 - 18V at 100mA. The connection is wired directly to 
the power connector that is supplied as part of the unit or is available separately to order. 

 

 

Summary of Contents for SILVERLINE VTx

Page 1: ...Tx Miniature Fibre Optic Video Transmitter Serial Number Date Commissioned Commissioned By Cove Communications Contacts Cove Communications Ltd 8 Copthorne Business Park Dowlands Lane Copthorne Crawley West Sussex England RH10 3HX Tel 44 0 845 838 8850 Fax 44 0 1342 715384 ...

Page 2: ... suitable for transmission over fibre with this product This product enables high quality video distribution over fibre without the need for equalisation for distances up to 4km Because of the wide bandwidth of the Cove Communications SILVERLINE Fibre Optic Video Transmitter and its video encoding systems independence users can be confident when using this product that they are relatively future p...

Page 3: ...ameras video tape recorders etc Power is connected to the unit via a miniature circular connector requiring a nominal 12v D C supply To help during installation LED s are provided to indicate that the D C power is connected that video is present This equipment has been designed to meet the European EMC requirements 2 FEATURES Compact miniature metal case construction Conforms fully to all world co...

Page 4: ...3V syncs to 0 7V video Video input Impedance 75 Ohms Bandwidth Greater than 15MHz Operating Distance fibre d c to 15 MHz 4km with Cove Communications optical video receiver LED Indications Power and video present Light Source LED Light Source Wave Length 850nm Optical output power Greater than 30µW 62 5 125 fibre Optical Connectors ST Construction Metal Case Overall Size 71 x 63 x 30mm DC Power Re...

Page 5: ...o transmitter is small enough to be connected directly to the video source and may either draw its power from the host equipment or from an external D C supply The video signal is processed in the analogue domain and converts the analogue video input signal into a linearly modulated infra red light source for transmission down the fibre optic cable 5 2 AGC Automatic Gain Control The AGC Automatic ...

Page 6: ...ation Records NOTES 6 2 External use If this fibre optic video transmitter is to be used with a video camera mounted in the open it should be fitted into the climatic enclosure along with the camera If the video camera has a pan tilt and zoom pedestal it is recommended that the Video SILVERLINE is mounted to a fixed position and a special flexible video coaxial cable used for the camera connection...

Page 7: ...e video transmitters are supplied with either ST or other fibre optic connectors according to the order If no preference is stated the default connector will be the ST version 6 6 Fibre Optic Cable The transmitter will work with all multimode fibre optic cable 50 125 and 62 5 125 fibre optic cable is recommended 7 MAINTENANCE The unit has been designed for continuous running and fault free operati...

Page 8: ... in level Green and Yellow LED s Fibre optic cable loss is too high are ON but there is no Dirt in fibre optic connectors or the level is low due to video output at the receiver a faulty optic transmitter diode return to Cove Communications for service Green and Yellow LED s Mixed sync level at the transmitter is too high in are ON but the video output amplitude compared to the peak white level le...

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