Product Overview
The FQ-SGZ301-T/R(3G) 3G/HD-SDI Fiber Optic Extender is a professional long-distance video transmission solution that extends uncompressed 3G/HD-SDI video signals over fiber while providing 1-channel reverse RS485/Tally data transmission.
The system supports video resolutions up to 1920 × 1080p @ 60Hz and is backward compatible with lower-resolution SDI signals. Using single-mode fiber, it supports transmission distances of up to 20km through an LC/PC SFP optical interface.
The transmitter converts the 3G/HD-SDI video signal into an optical signal for long-distance transmission, while the receiver converts the optical signal back to the original SDI video signal without compression. The system also provides reverse RS485 and Tally data communication, making it suitable for professional camera systems, live production, broadcast, surveillance, and event applications.
The plug-and-play design requires no configuration, while the SFP optical module supports field replacement and hot-swapping for convenient maintenance.
Key Features
- Supports 3G-SDI and HD-SDIstandard signals
- Supports resolutions up to 1920 × 1080p @ 60Hz
- Up to 20km transmission over single-mode fiber
- Supports up to 300m over multimode fiber
- 1-channel reverse RS485/Tallydata transmission
- LC/PC SFP optical interfacewith field hot-swappable module
- Uncompressed, real-time video transmission
- Maintains high-fidelity original SDI video quality
- Plug-and-play operation
- Power, SDI, optical signal, and Tally status indicators
- Wide DC power input of 5–24V
- Compact and lightweight design
Applications
- Professional camera systems
- Live broadcasting and production
- Concerts and large-scale events
- Security and surveillance systems
- Military and field video transmission
- Studio and broadcast systems
- Camera control and Tally communication
- Long-distance 3G/HD-SDI video transmission
Video
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Item
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Specification
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Model
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FQ-SGZ301-T/R(3G)
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Video Standard
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3G-SDI / HD-SDI
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Maximum Resolution
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1920 × 1080p @ 60Hz
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Compatibility
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Backward compatible with lower SDI signals
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Transmission
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Uncompressed, real-time
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Transmission Bit Rate
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240MHz–2.97GHz
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Optical Interface
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Item
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Specification
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Optical Interface
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LC/PC
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Optical Module
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SFP
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Fiber Type
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Single-Mode / Multimode
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Single-Mode Distance
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1m–20km
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Multimode Distance
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1m–300m
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Optical Wavelength
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1310nm
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Optical Standard
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IEEE 802.3z 1000BASE-LX
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Transmit Power
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-9.5 to -3dBm @ 1310nm
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Receiver Sensitivity
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-21dBm @ 1310nm
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Return Loss
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≤10dB
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RS485 & Tally
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Item
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Specification
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Data Interface
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1-channel reverse RS485/Tally
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RS485 Signals
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Data+ / Data-
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Data Direction
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Reverse transmission
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Tally
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Tally input/output supported
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Tally Connections
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TA / TB / TC
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The reverse data channel enables RS485 and Tally signals to be transmitted between the transmitter and receiver sides together with the SDI video signal.
TALLY Wiring – Transmitter Output
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TA
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TB
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TC
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LED Long Pin
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LED Positive
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LED Positive
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LED Positive
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LED Short Pin
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LED Negative
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LED Negative
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LED Negative
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Floating
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No Connection
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No Connection
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No Connection
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LED Status
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Color Change
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Brightness Change
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LED On/Off
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TALLY Wiring – Receiver Input
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TA
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TB
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TC
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Tally Input
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Signal Input
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Signal Input
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Signal Input
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COM
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COM
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COM
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COM
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Drive Type
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OC Drive
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OC Drive
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OC Drive
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RS485 Wiring
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Data+
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Data-
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NC
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Connection
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Data+
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Data-
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Leave Unconnected
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Power
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Item
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Specification
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Power Input
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DC 5–24V
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Power Consumption
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2W max.
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Indicators
Transmitter
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Indicator
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Status
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Power/Tally
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Green: Power or Tally status
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SDI
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Green: SDI signal detected
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Receiver
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Indicator
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Status
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Power/Tally
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Red: Power or Tally status
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Optical/SDI
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Red: Optical or SDI signal status
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Environmental & Mechanical
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Item
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Specification
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Operating Temperature
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-20°C to +70°C
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Storage Temperature
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-40°C to +80°C
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Relative Humidity
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0–95%, non-condensing
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Dimensions
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110 × 40 × 20mm
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System Configuration
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Unit
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Function
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FQ-SGZ301-T(3G)
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3G/HD-SDI Fiber Transmitter
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FQ-SGZ301-R(3G)
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3G/HD-SDI Fiber Receiver
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The transmitter and receiver are used as a pair to provide long-distance 3G/HD-SDI video transmission with reverse RS485/Tally data communication.
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