Kramer

Kramer 673R/T 3G HD-SDI Fiber Optic Transmitter Receiver

Transmit High-Quality Video Signals with Confidence The Kramer 673T/R Fiber Optic Transmitter and Receiver set provides a high-performance solution for transmitting video signals up to 3G HD-SDI and dual-link HD-SDI over long distances. Convert SDI signals to optical and back, ensuring minimal s...

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*Price sourced from Amazon.com. Last updated:Jul 13, 2026.Price and availability are subject to change.

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Overview

Transmit High-Quality Video Signals with Confidence

The Kramer 673T/R Fiber Optic Transmitter and Receiver set provides a high-performance solution for transmitting video signals up to 3G HD-SDI and dual-link HD-SDI over long distances. Convert SDI signals to optical and back, ensuring minimal signal loss and maximum reliability.

Specifications: * Max. Data Rate: Up to 3Gbps for each SDI input * HDTV Compatible * Multi-Standard Operation: SDI (SMPTE 259M), HD−SDI (SMPTE 292M) and 3G HD−SDI (SMPTE 424M) and dual−link HD−SDI (SMPTE 372M) * Laser Standards Compliance: IEC 60825−1, FDA 21CFR1040; Laser Class 1 Safety of laser products * System Range: 1000m (more than 3200ft)

Specifications

Model
673R/T
Signal Type
3G HD-SDI
Technology
Fiber Optic
Function
Transmitter Receiver

Pros & Cons

👍 Pros

  • Designed for transmitting and receiving 3G HD-SDI signals, ensuring compatibility with professional video equipment.
  • Utilizes fiber optic technology, which allows for extended signal transmission distances without loss of quality.
  • Supports both transmitter (T) and receiver (R) functions, providing a complete solution for signal extension.
  • Kramer is a known brand in professional AV, suggesting a level of reliability and industry standard compliance.
  • The use of fiber optics inherently offers immunity to electromagnetic interference, ensuring clean signal transmission.

👎 Cons

  • Specific technical details beyond 3G HD-SDI and fiber optic are not provided, such as signal range or fiber type.
  • The product title indicates it is both a transmitter and receiver, but it is unclear if it's a single unit with dual functions or a pair of devices.
  • Installation may require specialized fiber optic cabling and connectors, which could increase overall system complexity and cost.
  • Lacks information on advanced features such as embedded audio support or ancillary data pass-through.
  • Without detailed specifications, assessing compatibility with complex existing AV infrastructures may be challenging.

Frequently Asked Questions

The Kramer 673R/T supports 3G HD-SDI video signals, a professional standard for broadcasting and production.
Fiber optic technology allows for long-distance signal transmission with minimal degradation and offers immunity to electromagnetic interference, ensuring high-quality video over extended runs.
Yes, the "673R/T" in the model name indicates that it serves as both a transmitter ("T") and a receiver ("R") for 3G HD-SDI signals.
Yes, fiber optic cabling is required for operation. The specific type of fiber (e.g., single-mode or multi-mode) is not specified, but professional installation is often recommended.
While HD-SDI signals typically carry embedded audio, the product features do not explicitly state audio transmission capabilities for this specific unit.