LAUNCH AMPLIFIER
There are two variable controls, namely LIFT and GAIN, situated close to the BNC connector J1.
these are pre-adjusted for a cable distance of 500m and are adjustable to compensate for video
detail or signal losses if and when longer or shorter cable lengths are used to connect the monitor
to the receiver.
Default Position: For shorter cable lengths, turn the relevant control anti-clockwise until the
required picture quality is obtained.
For longer cable lengths, turn the relevant control clockwise until the required picture clarity is
obtained.
The purpose of each control is:-
LIFT: Boosts the high frequency signal
GAIN: Adjusts the gain of the video signal
drx 400d.c. Installation Manual
Page. 9