GE VT1930WDM | FM Video and Data Transmitter

The GE VT1930WDM is a robust industrial-grade FM Video and Data Transmitter designed for high-quality, long-distance signal transmission over fiber optic cables. This Video/Data transmitter is part of the GE security and industrial monitoring series, commonly used to transmit real-time video surveillance feeds along with simultaneous bi-directional data (such as PTZ control signals) across extensive facility networks.

⚙️ Technical Specifications

• Model: VT1930WDM (Wavelength Division Multiplexing)

• Function: FM Video Transmitter + Bi-directional Data Transmitter

• Signal Type: Baseband Video and RS-232/RS-422/RS-485 Data

• Transmission Medium: Fiber Optic (Single-mode or Multi-mode variants)

• Modulation: Frequency Modulation (FM) for high signal-to-noise ratio

• Dimensions: Standard industrial compact module (approx. 6.00″ x 4.00″ x 1.50″)

• Weight: Approximately 1.0 – 1.5 lbs

• Country of Origin: USA

🌐 Application Areas

This transmitter is a cornerstone in legacy and industrial monitoring infrastructures:

• 📹 CCTV Surveillance: Sending high-resolution analog video from remote cameras to centralized control rooms.

• 🕹️ PTZ Control: Simultaneously sending pan, tilt, and zoom commands via the integrated data channel.

• 🏭 Remote Process Monitoring: Used in plants where electromagnetic interference (EMI) makes copper wiring impractical for video signals.

• 🛡️ Perimeter Security: Connecting remote gates and fences to a central security hub.

📖 Operating Instructions

For reliable signal transmission, follow these installation procedures:

1. Fiber Preparation: Ensure the fiber optic connectors (ST, FC, or SC) are clean and free of debris using an isopropyl alcohol wipe before insertion.

2. Mounting: Secure the module in a dedicated rack chassis or wall-mount housing. Ensure it is located in a dry environment with adequate ventilation.

3. Data Configuration: Set the DIP switches on the unit to match the required communication protocol (e.g., RS-485) and baud rate of your PTZ camera/controller.

4. Wiring: Connect the video input (BNC) and the data leads (terminal block) to the transmitter.

5. Validation: Check the front-panel status LEDs. A solid “Video Link” LED indicates a valid signal is being transmitted to the receiver unit at the far end of the fiber.

❓ Frequently Asked Questions

What does “WDM” signify in the model name? WDM stands for Wavelength Division Multiplexing. This technology allows both the video signal and the data signal to be sent over a single fiber optic strand by using different wavelengths of light, significantly reducing cabling infrastructure requirements.

Why use FM (Frequency Modulation) instead of AM? FM provides much higher immunity to signal degradation and amplitude fluctuations over long distances, resulting in a clearer, “ghost-free” video signal compared to simpler Amplitude Modulation systems.

Is this device compatible with IP cameras? No. The VT1930WDM is designed for analog video signals. It cannot natively process digital IP packets. You would need a separate video encoder if you are attempting to bridge IP cameras to a fiber network.

What is the maximum transmission distance? The distance depends on the fiber type used: Multi-mode fiber typically reaches up to 2 km, while Single-mode fiber can extend transmission distances up to 20 km or more without the need for repeaters.

📋 Recommended Similar Models

1. GE VT1930 (Standard Video-only transmitter)

2. GE VT1940 (Video and Data transmitter with higher bandwidth)

3. IFS VT1120 Series (Video/Data transmission module)

4. ComNet FVT/FVR Series (Fiber Video/Data system)

5. Optelecom-NKF Video/Data Transmitter

6. Meridian Technologies Fiber Video/Data links

7. Fiber Options 2000 Series

8. GE VTX/VRX Fiber transmission series