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Digital Video Fiber Optic Transmission System -- by Link Electronics
LINK
ELECTRONICS
FO SERIES USER MANUAL
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LINK FO Series, Fiber Optic Transmission System
Features:
3G/HD/SD-SDI and ASI signal auto recognition, no need to select manually.
Compliant with the standards of SMPTE424M, SMPTE292M, SMPTE259M,
SMPTE297M, SMPTE305M, SMPTE310M.
Compliant with the standard of DVB-ASI (EN50083-9).
Auto adaption to the speed of 3G-SDI/HD-SDI/SDI 143M, 177M, 270M, 360M,
540M, 1483.5M, 1485M, 2970Mbps, or DVB-ASI.
Including automatic cable equalization function, compensation for cable
transmission loss.
Convenient instructions of LED status, data rate, optical link, power supply etc.
PCB boards made with environment friendly Pb-free.
PCB boards made with multilayer design, to ensure stable and reliable signal
transmission.
All components, including connectors, are ordered from major manufacturers
they are highly stabile and insures reliability.
Enclosure box material is made of aluminum, elegant appearance, and light
weight.
Internal switching power supply, wide voltage range, and long-term running
reliability.
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Introduction
The Link FO series digital video fiber optic transmission system can transmit any
of the 4 following signals in any combination; 2970Mbps 3G-SDI 3 Gigabyte high
definition digital video, 1485Mbps HD-SDI high definition digital video, 270Mbps SD-SDI
standard definition digital video, or DVB-ASI streams through one single fiber optic
cable with the standards of SMPTE424M, SMPTE292M, SMPTE259M, SMPTE297M,
SMPTE305M, and SMPTE310M. Due to the advanced digital fiber optic transmission
technology, there is no need to make any adjustments with a simple set up and ease of
operation.
The Link FO series transmitter provides 4 3G-SDI inputs with loop-through for
local monitoring. The receiver has 8 outputs that are 4 pairs of the 3G-SDI inputs. The
Link FO series transmitter is equipped with auto-cable equalization circuitry, and cable
driver circuitry at receiver. The Link FO series has signal jitter elimination circuitry to
ensure high quality signal transmission over long distance fiber optic cable on both the
transmitter and receiver.
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Technical Specification
3G/HD/SD-SDI inputs
Number of inputs
4 plus 4 loop-through
Resolution
10 Bit
Signal
>380mVp-p
Auto-Cable
>100m@2970Mbps,Belden,1694A cable
•
>200m@1.485Gbps, Belden 1694A cable)
>350m@270Mbps, Belden 1694A Cable)
Input Return Loss
>10dB@2970Mbps
Impedance
75
Connector
BNC
3G-SDI Output
Channel Capacity
8
Signal
800mVp-p±10%
3G-SDI Rise/Fall
<135ps@2970Mbps
HD-SDI Rise/Fall
<270ps@1485Mbps
SD-SDI Rise/Fall
<0.6ns@270Mbps
3G-SDI Jitter
<0.3UI
HD-SDI Jitter
<0.2UI(134ps)@100kHz
<1.0UI(673ps)@10kHz
SD-SDI Jitter
<0.2UI(740ps)@10Hz
<0.2UI(740ps)@1kHz
Impedance
75
Connector
BNC
Physical
Dimension(mm)
H 1.7” X W 6.0” X D 12”
Power Supply
130 - 255VAC, 50-60Hz
Power Consumption
<5W@each unit
Temperature
0 to +50 Degrees Celsius
Humidity
0 to 95% RH Non-condensing
LED Status Indicator
Power, Optical Link, Video Activity
Optical
Fiber Type
Single mode
Number of fiber
1
Distance
Up to 30km
Connector
FC/PC
in
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Front Panel LED Indicators
The AC power switch is located on the front panel of the transmitter.
Transmitter connectors and LED indicators are located on the rear panel
The AC power switch is located on the front panel of the receiver.
Receiver connectors and LED indicators are located on the rear panel
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Rear Panel Connectors and LED Indicators
Transmitter connectors and LED indicators on the rear panel
The connectors are;
1. IN1, IN2, IN3, and IN4, 4 3G/HD/SD-SDI or ASI Inputs
2. L01, L02, L03, and L04, 4 3G/HD/SD-SDI or ASI Looping Outputs
3. TX, fiber connector is Type FC/PC
The LED indicators are;
1. DET, yellow means no 3G/HD/SD-SDI or ASI signal is detected, green means
3G/HD/SD-SDI or ASI signal is detected.
2. 3G/SD, off not used.
3. PWR, red when the system is powered on.
I
Receiver connections and LED indicators on the rear panel
The connectors are; arranged,
1. OUT11 and OUT12, 3G/HD/SD-SDI Outputs from IN1.
2. OUT21 and OUT22, 3G/HD/SD-SDI Outputs from IN2.
3. OUT31 and OUT32, 3G/HD/SD-SDI Outputs from IN3.
4. OUT41 and OUT42, 3G/HD/SD-SDI Outputs from IN4.
5. RX, fiber connector is Type FC/PC
The LED indicators are;
1. DET, yellow means no 3G/HD/SD-SDI or ASI signal is detected, green means
3G/HD/SD-SDI or ASI signal is detected.
2. 3G/SD, white when output is 3G/HD-SDI, green when output is SD-SDI.
3. PWR, red when the system is powered on.
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Connection Instruction
1. The optical fiber uses Type FC/PC connector, not FC/APC or the others.
2. Keep the optical fiber connector clean, prevent dust from getting in.
3. Fiber Optic embed/de-embed input/output interface are BNC connectors with 75
impedance.
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