1+1 Master-Slave 3G-SDI 2x1 Auto Changeover Switcher

 1+1 Master-Slave Broadcast Redundancy Switch with Video Freeze, Black Screen & Audio Silence Detection | 3G/HD/SD-SDI Failover Switch with Dual SDI Loopouts for PIS & Live Transmission

Key Features / Bullet Points (5 Features)

• 1+1 MASTER-SLAVE REDUNDANCY & FAILOVER: Features intelligent automatic switching between Master (SDI 1) and Slave (SDI 2) inputs. Designed for mission-critical broadcast environments, train Passenger Information Systems (PIS), and live video production, it instantly switches to the secondary input when the primary signal is lost, ensuring continuous, uninterrupted transmission.
• ADVANCED SIGNAL LOSS DETECTION: Equipped with broadcast-grade signal monitoring that detects video freeze, black screens, and audio silence. If both Master and Slave inputs fail simultaneously, the switcher displays a custom user-configurable frozen hold frame to maintain system stability downstream.
• DUAL INDEPENDENT SDI LOOPOUTS: Built with 2-channel SDI inputs and 2-channel dedicated SDI loopouts. SDI Loop 1 directly mirrors SDI Input 1 (Master) and SDI Loop 2 directly mirrors SDI Input 2 (Slave), enabling seamless local monitoring of both primary and secondary feeds.
• BROADCAST QUALITY & WIDE FORMAT SUPPORT: Delivers 1:1 signal passthrough keeping the exact input quality with zero latency or distortion. Fully supports 3G-SDI, HD-SDI, SD-SDI, and DVB-ASI signals at resolutions including 1080p @ 60/50Hz, 1080i @ 60/50/30Hz, 720p @ 60/50Hz, and SD 576i.
• COMPACT INDUSTRIAL DESIGN: Housed in an ultra-compact metallic enclosure measuring 120 x 104 x 28 mm. Operates on low-voltage DC 5V power and supports both standalone desktop positioning and mountable installation for control racks, OB vans, or transit equipment cabinets.

Product Overview / Description

The 3G-SDI 2x1 Master-Slave Redundancy Switcher is a high-performance, broadcast-grade auto-changeover solution designed to eliminate downtime in critical video workflows. Ideal for broadcasting systems, live events, outdoor production trucks, and rail transit Passenger Information Systems (PIS), this switcher guarantees active signal continuity by monitoring feed health in real time.

How It Works

Under normal operation, SDI 1 serves as the primary Master input. The internal monitoring unit constantly evaluates video and audio integrity. Should SDI 1 suffer signal loss, video freezing, black frames, or silent audio, the device instantly triggers auto-switchover to SDI 2 (Slave). In the event that both inputs lose signal, the unit locks to a custom user-defined frozen picture to maintain system sync without outputting static or blank signals.

I/O Configuration

• Inputs: 2× BNC SDI Inputs (SDI 1 Master / SDI 2 Slave)
• Loop Outputs: 2× BNC SDI Loopouts (SDI Loop 1 from Input 1 / SDI Loop 2 from Input 2)

Technical Specifications

Package:   1 x Switcher  + 1 x Power Supply Adapter with US/EU/UK/AU

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BY-SDIMS-100

BY-SDIMS-100