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LEN Digital Signal Video Relays

LEN Digital Signal Video Relays

These miniature single-circuit change-over relays provide full broadcast quality switching for data rates up to 12Gb/s. They are suitable for applications such as power-failure switching and source selection. They can be used to choose between two inputs or to have a single input and choose between two outputs, controlled by a 5V DC applied to the coil.

Four models are available: The LEN-4KR01 is for use with full 12G/4K UHD SDI video and all lower standards including 6G, 3G, HD and SD SDI. The LEN-3GR01 may be used with 3G, HD or SD SDI signals while the LEN-HDR01 may be used with HD or SD SDI. Each is built in an ABS enclosure fitted with three female BNC connectors, with mounting screws, which are also used to connect to the coil, on the same face of the relay as the connectors.

All the L E N Video Relays can also be used with the AES / MADI /ASI format.

Optional accessories:

The LEN-MPR01 rack frame is a 1U 19-inch panel, finished in black, punched to take eight relays mounted from the rear by means of the mounting screws, the BNC connectors facing out of the rack. If it is desired to have the connectors facing into the rack, the relays may be reversed, revealing the relay modules which will protrude 15mm from the surface of the panel.

Technical Specifications
Impedance 75 Ohms
Insertion loss (3) 0.4dB
Amplitude roll-off (2) -0.3dB from 270 MHz to 12.0 GHz -0.3dB from 270 MHz to 3.0 GHz -0.3dB from 270 MHz to 1485 MHz -0.3dB from 0.1 MHz to 360 MHz
Return loss (1) 10dB 0.1 MHz to 12.0 GHz 15dB 0.1M Hz to 3.0 GHz >15dB 0.1 MHz to 1485 MHz >15dB 0.1 MHz to 360 MHz
Control voltage 5 volts DC 80mA (via mounting screws)
Enclosure ABS box, 45 x 30 x 15 mm (excluding connectors)
Weight 32 gm 35 gm
Connectors BNC female


All measurements are quoted with the relay energised.

  1. Worst case
  2. Maximum attenuation
  3. Maximum loss DC - 360MHz.
Description      Each:
Price Qty
LEN-4KR01LEN 4K/12G digital video signal relay£414.00
LEN-3GR01LEN 3G-SDI digital video signal relay£131.40
LEN-HDR01LEN HD-SDI digital video signal relay£107.51
LEN-AMR01LEN AES / MADI / ASI signal relay£107.50
LEN-MPR011U rack panel to mount up to 8 video relays£54.10
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