Marshall VMV-402-3GSH Four-Input Multiviewer and Seamless Switcher

The Marshall VMV-402-3GSH combines four-source viewing with a switched program output. A dedicated quad-view connection keeps all inputs visible while the operator selects the outgoing feed. Input scaling and frame-rate conversion support a common output format for installed AV and production systems.

Marshall VMV-402-3GSH Features

• Four sources with HDMI alternatives. Four 3G-SDI inputs are provided, with HDMI available as an alternative for inputs 1 and 2. These alternatives change the connection type of two inputs; they do not create six independent sources.
• Persistent quad-view monitoring. A dedicated HDMI quad-view output shows all four source positions. The operator can continue watching the available inputs while a different selected program feed is sent to the audience or recorder.
• Separate program outputs. HDMI and SDI provide program connections for downstream equipment. Their format limits differ, so the chosen output mode must suit the specific interface feeding the display, recorder or switcher.
• Scaling and frame-rate conversion. Incoming resolution and frame rate can be converted to the selected output format. This helps bring supported sources into a common output configuration rather than requiring every source to arrive identically formatted.
• Seamless 4 × 1 switching. The unit switches among four sources for the program output. Combined with its conversion functions, it supports source changes while retaining the dedicated overview of the input signals.
• Analysis and remote operation. A selectable waveform overlay supports level checks, and front-panel, browser and RS-232 control provide operating options. The 1RU chassis includes rack ears for permanent installation with the supplied 12 V, 5 A power arrangement.