B742AV - Fiber Optic Video and Audio


Video and 2-Channel Audio B742AV and B7742AV

The B742AV and B7742AV series high performance broadcastgrade fiber transmission system supports one composite video channel and two channels of line-level audio. The all-digital processing platform features 24-bit audio processing. For added flexibility, dual range audio levels for the audio channel can be configured for -10 dB to +8 dB or 0 dB to +18 dB operation. Two multi-segment LED displays provide complete monitoring of input video, output video, audio input and audio output levels and the received optical signal. When switched to the test mode on the receiver, the front panel LEDs have the capability to display the received optical level. This built-in test feature aids in the installation process as it easily measures the actual optical loss in the fiber run from the transmitter.

Especificações técnicas

  NTSC and PAL
 Input/Output Signal
  1.0 V pp
  7.5 MHz
 Signal-to-Noise Ratio
  >67 dB
 Input/Output Impedance
  75 ohms
 Differential Phase
 Differential Gain
 Input Signal Level
  -10 dBm to +8 dBm or 0 dBm to +18 dBm
 Input Impedance
  600 ohms or 30 k ohms (balanced or unbalanced)
 Frequency Response
  20 Hz to 20 kHz
 Sampling rate
  48 kHz
 Output Signal Level
  8 dBu or 18 dBu maximum
 Output Impedance
  <30 ohms unbalanced, <60 ohms balanced
 Signal-to-Noise Ratio
  90 dB
 Total Harmonic Distortion
 Test Signal
  1 kHz @5 dBu
  Multimode or Single Mode
 Optical Budget*
  Multimode 13 dB; Single Mode 18 dB
  Multimode 1300 nm; Single Mode Laser 1310 /1550 nm (Depending on model)
 Operating Distance
  Multimode 3.7 mi (6 km); Single Mode Up to 37 mi (60 km) (Depending on model used))
 Modulation Type
 Gain Control
  Optical Automatic Gain Control (OAGC)
 Input Power
  13.5 VDC regulated
 Current Requirement
  600 mA
 Power Consumption
  6 W
 Power Factor
  Solid-state short circuit protection
 Operating Temperature
  -40 to 167 °F (-40 to 75 °C)
 Maximum Humidity
  95% relative, noncondensing
  FCC Part 15, ICES-003, AS/NZS 3548, EN55022
  ENV50204, EN61000-4-2, -3, -4, -5, -6, -11
  UL 1950, CAN/CSA 22.2, NO. 950-95
 Laser Safety
  21CFR1040, EN60825-1, -2
 Dimensions, Rack Units
  1 slot (1.0'')
  0.6 lbs (0.27 kg)
  • One-way video and audio transmission over one single mode or multimode fiber
  • Exceeds EIA-250C Short Haul Standard
  • 10-bit video processing
  • 24-bit audio processing
  • 20 Hz to 20 kHz frequency response
  • Balanced or unbalanced audio
  • 13 dB optical budget
  • 90 dB audio SNR
  • Built-in 1.0 kHz test generator
  • Built-in optical power meter
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