Model 227-1 Video distribution Amplifier

General
  Model 227-1 is a dual channel,  4-outputs per channel (2x4) video distribution amplifier (VDA). With RM200 series
mounting frame, the 227-1 may be used as 1x 8 looping-thru VDA or Hi-Z-in 2x4 VDA. Each input channel has a
jumper-selectable 75ohm termination on the card. Each channel has a built-in cable-equalizer, capable of equalizing
BELDEN 8251 cable up to 500 feet. The equalizer is continuously adjustable by a multi-turn potentiometer.
When the module is used as 1x 8, the output may be split as two groups and each group can have independent
equalizing and gain setting.

Features:
* Differential input eliminates common mode hum.
* AC-coupling input (DC-coupling is possible by Adding
  a jumper on the card).
* 1, 3 or 10 module frames are available.
* Front-panel input input/output test points provide easy
  metering measures.
* Independent power supply is on card.
* LED power indicator is provided on the card.