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Summary of Contents for Radiant Communications VA700
- Page 1 Video/Audio Transmission System Series VA700 (formerly Series DVL4A) November 2000...
- Page 2 INSTRUCTION MANUAL SERIES VA700 & VA700M General The Series VA700 is a transmission system that converts video and audio signals (RS170, NTSC, PAL, SECAM) to fiber at the transmitter inter- face, and reconverts the signal to copper at the receiver.
- Page 3 Pin 3 (ground - shield). Input/output audio at pin 2. For explanations on AUDIO BALANCED and UNBALANCED see page 10. Power Connection Pin 1 +12V Pin 2 Pin 3 -12V Problems In case of problems, call Radiant Communications Technical Support toll- free at 1-800-969-3427.
- Page 4 VA700-R GROUND 3 AUDIO OUT 2 RADIANT AUDIO OUT 1 COMMUNICATIONS SERIES VA700-R (800) 969-3427 VIDEO OUT CARRIER - 12VDC POWER +12VDC +12VDC VA700-T RADIANT VIDEO IN COMMUNICATIONS SERIES VA700-T GROUND (800) 969-3427 AUDIO IN AUDIO IN OPTICAL OUT - 12VDC...
- Page 5 System Specifications POWER Requirements ..............+/- 12VDC @500mA Input/Output Level ................ Video: 1V p-p ................Audio: 0dBm (+10dBm max) ................ 600 ohm balanced or unbalanced Input/Output Impedance ............Video: 75 ohms ....................Audio: 10K ohms Signal-to-Noise Ratio ...... Video or Audio:>60dB @ 10dB attenuation Audio Distortion ..................
- Page 6 VA700-R Rear Panel Fiber ST Connector Fiber SC Connector Audio Out +12 GRD -12 + GND Video Out Power Plug VA700-T Rear Panel Fiber SC Connector Fiber ST Connector Audio In +12 GRD -12 + GND Video In Power Plug...
- Page 7 IMPORTANT INFORMATION The power supplies enclosed have been pre-wired due to the unconventional colors of the transformer leads. For future reference, the leads and their corre- sponding colors are listed in the table below. If there are any further questions regarding the matter, please contact technical support at 1-800-969-3427.
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Page 8: Unbalanced Audio
Audio Balanced & Unbalanced Balanced vs. UnBalanced Audio Lines Balanced lines use three wires with the outside wire being a shield around the inside two. The inside two wires are thus shielded from external RF. The common connectors for balanced audio is the XLR connector. Unbalanced audio lines use just two wires, there is no shield. - Page 9 Since you can’t break the screen of the audio cable, you must ‘lift’ the ground of the TX and RX pin on VA700 set. If for instance you use pin number 1 & 3 for your audio transmit and receive, connect pin 2 to...
- Page 10 If you get noise --check: Broken leads are a very common cause of interference. · Open XLR and jack plugs, and check that all wires are firmly connected in place. · Wiggle and stretch the cable while feeding a signal through it, to check for breaks within the cable.
- Page 11 W a r r a n t y Radiant Communications Corporation warrants that at the time of shipment the products manufactured by Radiant Communications Corporation will be free from defects in material and workmanship and will conform to the specifications furnished by or approved by Radiant Communications Corporation.
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