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1:2 Multi-Format Video & Stereo Audio Distribution Amplifier


The VM-312 is a distribution amplifier for multi-format video: composite, s-Video (Y/C), and component (HDTV) signals, each with unbalanced stereo audio. The unit takes one video/audio input of each format and distributes it to two identical outputs.

Features & Benefits

  • High Bandwidth - Composite: 490MHz (-3dB), s-Video (Y): 420MHz (-3dB) & Component: 450MHz (-3dB).
  • HDTV Compatible - Component input.
  • Desktop Size - Compact size. 2 units can be rack mounted side-by-side in a 1U rack space with the optional RK-1 adapter.

Product Use Diagram

Product Specifications

Inputs1 composite video, 1Vpp/75Ω on an RCA connector; 1 component video (Y, B-Y, and R-Y), 1Vpp/0.7Vpp/75Ω on RCA connectors; 1 s-Video, 1Vpp/0.3Vpp/75Ω on a 4-pin connector; 1 unbalanced stereo audio, 4dBu/50kΩ on a 3.5mm mini jack
Outputs2 composite video, 1Vpp/75Ω on RCA connectors; 2 component video (Y, B-Y, and R-Y), 1Vpp/0.7Vpp/75Ω on RCA connectors; 2 s-Video, 1Vpp/0.3Vpp/75Ω on 4-pin connectors; 2 unbalanced stereo audio, 4dBu/150Ω on 3.5mm mini jacks
Max Output LevelVideo: 1.8Vpp; Audio: 21Vpp
BandwidthCV: 490MHz; YUV: 450MHz; Y/C: 420MHz; Audio: >100kHz
Diff. Gain0.05%
Diff. Phase0.03Deg
S/N RatioVideo: 75dB; Audio: 82dB
CrosstalkVideo: -52dB @5MHz; Audio: -45dB video into audio @15kHz
CouplingVideo: DC; Audio: input: AC; Output: DC
Audio THD + Noise0.047% @1kHz
Audio 2nd Harmonic0.001% @1kHz
Power Consumption12V DC 130mA
Operating Temperature0° to 40°C (32° to 104°F)
Storage Temperature-40° to +70°C (-40° to 158°F)
Product Dimensions W, D, H8.45" x 6.42" x 1.72" (21.46cm x 16.30cm x 4.36cm)
Product Weight1.3 lbs (0.6kg)