Extron Electronics IN3012 - Manual (Page 5)

DESCRIPTION
The IN2085 is a line driver/equalizer designed to extend cable runs of high resolution Red, Green, Blue
and Sync video signals by providing individual gain and peaking controls for each output. The IN3012 is
a 1-input 2-output RGBS distribution amplifier. This manual covers both products. The main difference
between the two models is the number of outputs and operation of the two models is virtually identical.
INSTALLATION
1. Connect the red, green, blue and sync signals from the source to the input of the IN2085/IN3012
(see Operation section for details on sync on green or sync on all signals.)
2. Connect the IN2085/3012 red, green, blue and sync output signals to the display device(s) or other
equipment. When distributing higher scan rate signals over long cable lengths, cable choice is very
critical to overall system performance. The IN7200 Series and IN7300 Series High Resolution
RGBS cables are available in a variety of lengths and are well suited for this purpose.
3. Connect power by plugging in the power supply.
4. Adjust gain and peaking controls as needed (see Operation section for details.)
OPERATION
The IN2085/IN3012 have individual gain and peaking controls for the red, green, and blue video
channels. The sync channel has Automatic Gain Control (AGC), and outputs 4V p-p when unterminated
and 2V p-p terminated to 75 ohms.
Gain Control The gain control is used to increase the contrast of an image by compensating for
amplitude loss due to coaxial cables. The gain control has a range of 0.9 to 1.5.
Peaking Control The peaking control is used to sharpen an image by compensating for high
frequency loss due to coaxial cables. High frequencies can be boosted by as
much as 3 dB by adjusting the peaking control.