B746AV - Fiber Optic Video and Audio

Descriçao

Video and Two-Way Audio B746AV and B7746AV

The B746AV and B7746AV series high performance fiber transmission system supports one-way composite video and two-way High Quality Audio (HQA). The all-digital processing platform features 24-bit audio processing. Digital processing of the video component along with a signal-to-noise ratio >55 dB that assures clean, noise-free video at the receiver. Digital processing of the audio signal along with an audio signal-to-noise ratio >70 dB allows the audio output to drive balanced or unbalanced loads and maintain constant audio levels. Built-in system performance analysis includes LED displays that provide for complete monitoring of transmitter and receiver operation.

Especificações técnicas

Video
 
 Channels
  2
 Formats
  NTSC and PAL
 Input/Output Signal
  1.0 V pp
 Bandwidth
  7.5 MHz
 Signal-to-Noise Ratio
  >67 dB
 Video Resolution
  520 TV Lines
 Input/Output Impedance
  75 ohms
 Differential Phase
  <0.8°
 Differential Gain
  <3%
Audio
 
 Channels
  1 duplex
 Input Signal Level
  6 dBu balanced (max.), 0 dBu unbalanced
 Input Impedance
  30 k ohms (balanced or unbalanced)
 Frequency Response
  20 Hz to 15 kHz
 Sampling rate
  33 kHz
 Output Signal Level
  6 dBu balanced (max.), 0 dBu unbalanced
 Output Impedance
  <30 ohms unbalanced, <60 ohms balanced
 Signal-to-Noise Ratio
  >70 dB
 Total Harmonic Distortion
  <0.003%
Optical
 
 Mode
  Multimode or Single Mode
 Optical Budget*
  Multimode 13 dB; Single Mode 18 dB
 Emitter
  Laser
 Wavelength
  Multimode 850 and/or 1300 nm; Single Mode Laser 1310 and/or 1550 nm (Depending on model)
 Operating Distance
  Multimode 3.2 mi (5.2 km); Single Mode Up to 37 mi (60 km) (Depending on model)
 Modulation Type
  Digital
 Gain Control
  Optical Automatic Gain Control (OAGC)
Electrical
 
 Input Power
  13.5 VDC regulated
 Current Requirement
  450 mA
 Power Consumption
  6 W
 Power Factor
  4 (rack units only)
 Protection
  Solid-state short circuit protection
Environmental
 
 Operating Temperature
  -40 to 167 °F (-40 to 75 °C)
 Maximum Humidity
  95% relative, noncondensing
Standards
 
 Emmissions
  FCC Part 15, ICES-003, AS/NZS 3548, EN55022
 Immunity
  ENV50204, EN61000-4-2, -3, -4, -5, -6, -11
 Safety
  UL 1950, CAN/CSA 22.2, NO. 950-95
 Laser Safety
  21CFR1040, EN60825-1, -2
Mechanical
 
 Dimensions, Rack Units
  Standalone: 5.0'' x 4.8'' x 1.5'' (127 x 122 x 38 mm); Rack: 1 slot (1.0'')
 Weight
  Standalone 0.75 lbs (0.34 kg); Rack 0.6 lbs. (0.27 kg)
 Construction
  Steel (standalone); Aluminum (rack)
 
 
  • One-way video and audio transmission over one single mode or multimode fiber
  • Exceeds EIA-250C Short Haul Standard
  • 8-bit video processing
  • 24-bit audio processing
  • 20 Hz to 15 kHz frequency response
  • Balanced or unbalanced audio
  • 13 dB optical budget
  • Video SNR >55 dB
  • Audio SNR >70 dB
  • 32 kHz audio sampling rate
  • THD <0.01%
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