[31-111-104] 1X4 Equalizing Video DA, Variable Gain and EQ, 8281 Cable


This brick utilizes a BNC interface for inputs and outputs. It also carries an LED to indicate power.

It provides simple, easy distribution of a single signal to up to four outputs.

This unit allows for variable global control of both the equalization and gain of the input signal. This brick is for use with 8281 cable.

This unit ships with a 12V AC power transformer included.

Single Unit Pricing $376.00


  • 1X4 Equalizing Video Distribution Amplifier
  • Power 12V AC
  • Differential Input
  • Variable Global Gain
  • Variable Global Equalization
  • 8281 Cable
  • Operating temperature range: -40C to +50C
  • Fully encapsulated in epoxy
  • Unit has two 6-32 threaded inserts for mounting
  • Configuration: one input, four outputs
  • Input termination: 75 Ohms


# Channels1
Input 1 Signal TypeComposite Video
Input 1 CouplingDC
Input Configuration 1Standard 75 Ohms
Gain ConfigurationGlobal
Input 1 ConnectorBNC
Output 1 Signal FormatComposite Video
Output 1 CouplingDC
Output 1 ConnectorsBNC
Power ConnectorP5
Input Voltage 111-13 VAC
Low Operating Temp (C)-40
High Operating Temp (C)50
Power BypassNO
MountingTwo 6-32 Inserts



Power Supply

This unit has a very basic linear power supply with a 12 VAC input voltage requirement. A 12 VAC wall transformer (120 VAC input) is supplied with each unit. By using the wall transformer the power system provides ground isolation between the input power and the video circuits. The power supply uses a half wave rectifier design to develop the internal positive and negative voltage rails for the active operational amplifiers.


The package for this unit consists of a solid epoxy block. The internal electronics are assembled and tested before the encapsulation process. During the encapsulation the printed circuit board(s) are placed in a five sided box made of RTV mold parts. The cavity is filled with epoxy and the lid (top) of the mold is inserted. The curing process takes 24 hours. This type of package seals the electronics so water and contamination cannot affect the internal electronics. This type of package also provides superior resistance to shock and vibration compared to a metal or plastic box enclosure.