Comnet 2-Channel Audio Transceiver B End Bi-Directional Audio + Bi-Directional Contact - FXA2C1S1B

Comnet FXA2C1S1B 2-Channel Audio Transceiver

Overview

The FXA2C1S1B is a 2-channel audio transceiver that extends bi-directional audio and contact closure signals over single-mode fiber—eliminating ground loops and EMI that plague copper-based audio runs in industrial surveillance installations. This is the interface you need when deploying cameras or sensors at remote sites connected via fiber-optic backbone infrastructure.

Compatibility

The FXA2C1S1B integrates with surveillance systems using standard audio line-level inputs and outputs (RCA or XLR connectors on the copper side) and single-mode fiber (LC or SC connectors). It pairs with any camera, intercom, or audio encoder that supports bi-directional audio via standard audio ports. The contact closure channels handle dry relay contacts, making it suitable for door sensors, alarm inputs, and strobe/siren relay outputs in access control and emergency notification workflows.

Installation Notes

Fiber polarity and connector orientation matter—verify your installation matches the transceiver's TX/RX fiber designations. Audio level adjustment is typically required at commissioning; set input and output gains to prevent clipping and ensure intelligible audio across the fiber link. Keep fiber runs away from high-voltage AC cabling and electromagnetic sources to maintain signal integrity. Contact closure channels carry low-voltage logic signals; use appropriate wire gauge and isolation for longer runs in electrically noisy environments.