Comnet FVT40A4M Specsheet

4-Channel 10-Bit Digitally Encoded Video

+ 4-Channel 24-Bit Digitally Encoded Audio Multiplexer

FVT/FVR40A4(M,S)1

The ComNet™ FVT/FVR40A4 series video/audio multiplexer utilizes 10-bit video
encoding for true EIA/TIA RS-250C Short-Haul broadcast quality transmission, and
24-bit encoding at a 96 Khz sampling rate for the highest possible audio fidelity.
Digitally encoded transmission ensures that the video and audio performance remain
completely unaffected up to the maximum usable optical transmission distance or
optical path loss. These environmentally hardened units provide the transmission
of four independent simplex video and four independent simplex line-level audio
channels over one multimode or single mode optical fiber. The FVT/FVR40A4 series
is completely transparent to and universally compatible with any NTSC, PAL, or
SECAM camera system. Plug-and-play design ensures ease of installation, and no
electrical or optical adjustments are ever required.

FEATURES

› 4 channels of real-time 10-bit digitally encoded EIA/TIA
RS-250C Short-Haul quality video on one optical fiber

› 4 channels of 24-bit/96 Khz sampling rate digitally encoded

audio for the highest possible audio quality

› Digitally Encoded Transmission: No video or audio

performance degradation up to the maximum usable optical
transmission distance or optical path loss

› 20Hz to 18Khz audio frequency response

› Line-Level 600 ohm balanced audio input and audio output

at a maximum level of +6dBm

› Directly compatible with all NTSC, PAL, and SECAM CCTV

camera systems

› Wide optical dynamic range: optical attenuators are never

required

› Optical transmission distances of up to 48 km (30 miles)

› Designed for installation in harsh out-of-plant/unconditioned

industrial or roadside operating environments (-40º to +75ºC
ambient). Fully compliant with the environmental requirements
of NEMA TS-2 for Traffic Signal Control Equipment

› Voltage transient protection on all power and signal input/

output line provide protection from voltage surges and other
transient events

HARDENEDINCLUDED 4

› Bi-color LED status indicators confirm operating status

› Hot-swappable rack modules

› Interchangeable between stand-alone or rack mount use –

ComFit

› Lifetime warranty

› Made in the USA

4

APPLICATIONS

› Highest Performance/True Broadcast Quality
Multi-Channel Video & Audio Transmission Systems

› Television Broadcast Plants, Audio/Video Production & Post-

Production Facilities

› Hi-Resolution Video/Audio Security & Surveillance Installations

› Factory Floor Monitoring of Critical Manufacturing Processes

& Operations

› Complete Elimination of EMI/RFI in Electrically Noisy

Environments

› Optical Transmission Eliminates Troublesome & Frequently

Encountered Ground Loop Issues in Broadcast Facilities

LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427

FVT/FVR40A4(M,S)1

SPECIFICATIONS

4-Channel 10-Bit Digitally Encoded Video

+ 4-Channel 24-Bit Digitally Encoded Audio Multiplexer

Video

Video Input 1 volt pk-pk (75 ohms)
Overload >1.5 V pk-pk
# Input/Output Channels 4
Bandwidth (minimum) 10 Hz - 6.5 MHz per channel
Differential Gain <2%
Differ ential Phase <0.7˚
Tilt <1%
Signal-to-Noise Ratio (SNR) 67 dB Typical
Max. RG-59 COAX Distance 100 m (300 ft) Camera to Fiber Optic Module to

maintain 6 Mhz Bandwidth

Audio

# Input/Output Channels 4 (balanced)
Audio Input/Output Signal 4.4 volt pk-pk (+6dBm)
Bandwidth 20Hz - 18kHz
Total Harmonic Distortion <0.02%
Signal-to-Noise Ratio (SNR) 85 dB (minimum)

Wavelength 1310 nm/1550 nm, Multimode & Single Mode

Number of Fibers 1

LED Indicators › Video CH 1-4 › Audio CH 1-4 › Link › Power

Optical Emitter Laser Diode

Connectors

Optical ST
Power Terminal Block
Video BNC (Gold Plated Center-Pin)
Audio Terminal Block

Power

Operating Voltage Range 8 to 15 VDC
Power Consumption 4 W
Rack Mount Supplied From Rack

Electrical & Mechanical

Number of Rack Slots 2
Current Protection Automatic Resettable Solid-State Current Limiters
Circuit Board Meets IPC Standard
Size (in./cm) (L×W×H) 6.1 × 5.3 × 2.2 in (15.5 × 13.5 × 5.6 cm)
Shipping Weight <2 lb./0.9 kg

Environmental

MTBF >100,000 hours
Operating Temp -40˚ C to +75˚ C
Storage Temp -40˚ C to +85˚ C
Relative Humidity 0% to 95% (non-condensing)¹

ORDERING INFORMATION

Fibers

Part Number Description

FV T40A4M 4 Channel Video/Audio Transmitter (1310/1550 nm)

FVR40A4M 4 Channel Video/Audio Receiver (1310/1550 nm)

FV T40A4S 4 Channel Video/Audio Transmitter (1310/1550 nm)

FVR40A4S 4 Channel Video/Audio Receiver (1310/1550 nm)

Accessories 9 Volt DC Plug-in Power Supply, 90-264 VAC, 50/60 Hz (Included)

Options [1] Add suffix ‘/C’ for Conformally Coated Circuit Boards to extend to condensation conditions (Extra charge, consult factory)

DIN-Rail Mounting Adaptor Plate Kit – With mounting hardware (Optional, order model DINBKT1 or DINBK T4)

NOTE: This product requires a fiber installation with a minimum 30 dB connector return loss. The use of Super Polish Connectors is
recommended.
[2] Distance may be limited by optical dispersion.
Complies with FDA Performance Standard for Laser Products, Title 21, Code of Federal Regulations, Subchapter J In a continuing effort to
improve and advance technology, product specifications are subject to change without notice.

Required Fiber

1

1

Multimode

62. 5/125µm

Single Mode
9/125µm

Optical PWR
Budget

16 dB 2 km (1.2 mi) 2

16 dB 48 km (30 miles) 2

Maximum
Distance²

# Rack
Slots

TYPICAL APPLICATION

V

A

4

4

1 Fiber

FVT40A4S1

FVR40A4S1

4

4

V

A

OPTICAL FIBER
COPPER CABLE

3 CORPORATE DRIVE

8 TURNBERRY PARK ROAD

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DANBURY, CONNECTICUT 06810

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GILDERSOME

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MORLEY

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USA

T: 203.796.5300

|

LEEDS, UK LS27 7LE

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F: 203.796.5303

|

T: [phone]

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TECH SUPPORT: 1.888.678.9427

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F: [phone]

|

[e-mail]

|

[e-mail]

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