User Manual
DA-14C-Dual-2
COMM-TEC GMBH
SIEMENSSTRASSE 14
T49(0)7161/3000-0
WWW.COMM-TEC.DE
D-73066 UHINGEN
T49(0)7161/3000-333
5.0 Equalization
The DA-14C-Dual-2 has a Video equalization/boost feature for long cable runs.
A potentiometer allows the equalization of cable lengths up to 100 m.
Note
It is advisable to install the DA-14C-Dual-2 at the end of the cable run.
For the best results use RG59 B/U coax cable.
For calibration of the system proceed as follows:
a) Using a TV generator, generate a MULTIBURST signal and send it to the DA-14C-
Dual-2 by the cable which shall be equalized.
b) Connect a waveform monitor or oscilloscope with TV synchronism to one of the
outputs of the DA-14C-Dual-2 making sure that the input of the instrument is
terminated at 75
Ω
.
c) Adjust the potentiometer EQ1 or EQ2 until all the MULTIBURST packets on the
screen have the same amplitude.
Note
The potentiometers are factory set to minimum (counterclockwise)
