HDBaseT to HDMI & Audio ProScale Receiver/Scaler


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The Kramer VP-427A is a receiver/scaler for HDBaseT twisted pair, HDMI, bidirectional RS-232 and IR signals. The unit receives an HDBaseT signal that it converts to HDMI, IR and RS-232 signals. It up- or down-scales the picture to match the resolution of the HDMI monitor. It includes a simultaneous analog audio output of the embedded HDMI audio.

Features & Benefits

  • Max. Data Rate - 6.75Gbps (2.25Gbps per graphic channel).
  • Bidirectional RS-232 Port - For embedding/de-embedding control commands in the HDBaseT data stream.
  • Infrared Input and Output Ports - For controlling devices over the HDBaseT data stream.
  • System Range - Up to 70m (230ft).
  • Embedded Audio - Support for LPCM 2CH.
  • Constant Output Sync - Even when the input video signal is lost or interrupted.
  • ProcAmp Control - Contrast, brightness, fine tune & R, G, B level/gain.
  • Analog Audio Output - Includes a simultaneous unbalanced stereo audio output of the embedded HDMI audio.
  • On-Screen Display (OSD) - For easy setup and adjustment, accessible via the front-panel buttons.
  • Non-Volatile Memory - Saves final settings.
  • Freeze Button.
  • USB Port - For upgrading firmware.
Product Use Diagram

Product Specifications

Input1 HDBaseT twisted pair on an RJ-45 connector; 1 IR on a 3.5mm mini jack
Output1 HDMI connector; 1 IR on a 3.5mm mini jack; 1 unbalanced stereo audio on a 3.5mm mini jack
Ports1 bidirectional RS-232 port on a 9-pin D-sub connector
Output Refresh Rate60Hz for computer graphics resolutions; 50/60Hz for HDTV resolutions
Latency30ms approx
Video Color DepthInput: 8/10/12-bit; Output: 8-bit
Embedded AudioSupports LPCM 2CH
RS-232 Baudrate115200bps max
ControlsFront panel buttons; 1 USB for Programming
Power Consumption5.2V DC 1.5A
Operating Temperature32° to 104°F (0° to +40°C)
Storage Temperature-40° to 158°F (-40° to +70°C)
Humidity10 - 90% Non-condensing
Product Dimensions W, D, H7.38" x 4.53" x 1.00" (18.75cm x 11.50cm x 2.54cm)
Product Weight1.0 lbs. (0.5 kg)