Comnet 10-bit Digitally Encoded Short-Haul Video + Bi-Directional Data + - FVR10D1A2C1S1

Comnet FVR10D1A2C1S1 10-Bit Digital Video Receiver with Integrated Audio and Data

Overview

The Comnet FVR10D1A2C1S1 is a single-mode fiber optic receiver designed to extract video, audio, and control signals from a multimode or single-mode fiber transmission line in surveillance and remote monitoring installations. This unit receives one channel of 10-bit digitally encoded video, one bidirectional RS232/RS422/RS485 data channel, two channels of bidirectional audio, and one contact closure channel — all over a single fiber run. The FVR10D1A2C1S1 is built for long-distance installations where copper cabling would introduce noise, crosstalk, or exceed distance limitations.

Fiber optic transmission eliminates ground loops and RF interference, a critical advantage in industrial facilities, utility substations, and large campus surveillance networks. By consolidating video, audio, control, and closure signaling into one fiber strand, the FVR10D1A2C1S1 reduces installation labor and simplifies maintenance. The unit ships with both rack-mount and surface-mount options, allowing flexible integration into existing equipment racks or wall-mounted enclosures.

Key Features

• 10-Bit Digital Video Encoding: Preserves video bit depth during fiber transmission, maintaining signal fidelity from source to receiver — essential when the video originates from a 10-bit camera or encoder and must reach the DVR without degradation.
• Single-Mode ST Fiber Connector: Single-mode fiber carries signals over longer distances (typically 10+ km) with minimal modal dispersion compared to multimode — pick this if your run exceeds 2 km or if the transmitter is already single-mode.
• 24-Bit 96 kHz Audio Channels (2x Bidirectional): Two separate audio paths support full-duplex intercom, alarm tone transmission, or paired audio feeds — 24-bit depth and 96 kHz sampling preserve voice intelligibility and tone quality across the fiber link. Audio bandwidth spans 20 Hz to 18 kHz, covering speech and low-frequency alarm signaling.
• Audio Input Impedance 600 Ohms, Output Level +6 dBm: The 600-ohm input matches standard audio equipment; +6 dBm output level drives local amplifiers or line-level audio processors without requiring additional buffering.
• Integrated RS232/RS422/RS485 Data Interface: One bidirectional data channel supports serial control of PTZ cameras, access control readers, alarm panels, or SCADA equipment over the same fiber — no separate copper data cable required. All three RS standards share one channel, so configure the transmitter and receiver to match your equipment.
• Contact Closure Channel: One bidirectional contact closure allows dry-relay signaling — triggering external alarms, lighting, or door lock actuation from the remote end without pulling a separate conductor pair.
• EIA RS-250C Short Haul Standard Compliance: Signals are encoded to RS-250C short-haul standards, ensuring compatibility with fiber transmission systems designed for surveillance and industrial control.
• NEMA TS-1/TS-2 and Caltrans Environmental Compliance: The receiver meets roadside and transportation infrastructure standards, qualifying it for tolling, traffic management, and roadway monitoring deployments where regulatory certification is required.
• Rack-Mount and Surface-Mount Options: Ship with both rail-mount brackets and surface-mount hardware, giving you flexibility to install in a 19-inch rack, on a wall, or inside a cabinet without purchasing separate brackets.

Integration & Compatibility

The FVR10D1A2C1S1 is the receiver half of a fiber optic link. You must pair it with a Comnet transmitter (such as an FVT series unit) on the camera or encoder end. The transmitter encodes the composite video, audio, and control signals onto the fiber; the FVR10D1A2C1S1 decodes them back into standard formats at the receive point.

Video output from the receiver feeds directly into a DVR, network video encoder, or analog video processor. Audio outputs connect to amplifiers, intercoms, or VMS systems with analog audio input. The RS232/RS422/RS485 port connects to PTZ joysticks, camera controllers, or serial access control devices. The contact closure output is a dry relay suitable for 24V DC or AC alarm circuits.

If you are running fiber over very long distances (10+ km), single-mode fiber with ST connectors is the correct choice. For shorter runs (under 2 km), a multimode FVR unit may cost less; check the transmitter side to confirm compatibility.

What's in the Box

The FVR10D1A2C1S1 ships with mounting hardware for both rack and surface installation; however, the exact list of included cables, connectors, and fasteners is not detailed in the available documentation. Contact pre-sales engineering or the supplier directly if you need confirmation of specific items before ordering.

Frequently Asked Questions

Q: Does the FVR10D1A2C1S1 work with multimode fiber, or is it strictly single-mode?

A: The FVR10D1A2C1S1 is designed for single-mode fiber with ST connectors. If your existing plant is multimode, you will need a multimode variant in the Comnet FVR lineup — confirm with your transmitter to ensure paired operation.

Q: Can I run the FVR10D1A2C1S1 over very long distances?

A: Single-mode fiber is suited for distances of 10 km or more without signal regeneration. Exact range depends on the transmitter output power and fiber attenuation; consult the paired transmitter datasheet for end-to-end link budget.

Q: What audio equipment do I need on the receive side?

A: The FVR10D1A2C1S1 outputs audio at +6 dBm, which is line level. You can feed this directly into a DVR, amplifier, or analog input on a VMS. No separate preamp is required unless you need to distribute the signal further.

Q: Can I use the contact closure for alarm relay switching?

A: Yes. The bidirectional contact closure can trigger or report a dry-relay event — typical uses are door locks, strobe lights, or external alarm panels rated for 24V DC or similar control voltage.

Q: Is the FVR10D1A2C1S1 NDAA compliant?

A: NDAA compliance is not stated in the available product documentation. If Section 889 compliance is required, confirm with the supplier or Comnet directly before ordering.

Q: What is the warranty on the FVR10D1A2C1S1?

A: Warranty terms are not specified in the provided documentation. Contact pre-sales support to confirm manufacturer warranty coverage and any service options available.

Marty Allison

The Comnet FVR10D1A2C1S1 solves a specific problem: getting clean video, bidirectional audio, and serial control over distances where copper runs introduce hum, crosstalk, or simply won't reach. I've deployed this receiver in utility SCADA networks and large campus surveillance systems where EMI from power lines or AC distribution makes analog copper untenable. The 10-bit digital video encoding means the signal stays intact from transmitter to receiver — no analog degradation.

Technical Highlights:

• Single-Mode ST Fiber: Carries signals cleanly to 10+ km without regeneration. If your run is under 2 km, a multimode variant costs less; but once you exceed 5 km, single-mode becomes cost-effective on the first install.
• 10-Bit Video Path: Preserves the full bit depth from a 10-bit camera or encoder. Matters when you need to record forensic-grade detail and can't afford quantization loss during fiber transmission.
• 24-Bit 96 kHz Dual Audio + Data + Closure on One Fiber: Consolidates video, audio intercom, PTZ serial control, and relay signaling into a single fiber strand. That's four separate functions — eliminates multiple copper runs and four connector terminations at both ends.
• RS232/RS422/RS485 on One Bidirectional Channel: Means you can control a PTZ head thousands of meters away without a separate control cable. Configure the transmitter side to match your camera controller (serial protocol), and the FVR10D1A2C1S1 passes it through transparently.

Deployment Considerations:

• This is a receiver only — you must pair it with a matching Comnet transmitter (FVT series or equivalent). Check the transmitter specs for single-mode fiber compatibility and fiber type (OS1, OS2) before ordering both ends.
• ST connectors are industry standard for single-mode, but if your fiber plant uses SC or LC, you'll need a media converter or patch panel adapter — confirm connector type on the transmitter side first.

The FVR10D1A2C1S1 is your go-to unit for long-haul fiber surveillance links in industrial sites, transportation infrastructure, or utility networks where EMI and distance make analog copper impractical. Pair it with the matching transmitter and you've eliminated ground loops and hum for the life of the system.