DA204
DUAL1X3 VIDEO DISTRIBUTION AMPLIFIER
c) Turn the EQUAL CV1 or EQUAL CV2 trimmer in a clockwise direction and observe the
waveform on the screen of the waveform monitor or oscilloscope until the following
conditions are matched:
d1) Correct amplitude of impulse 2T
(Ref. A)
d2) Correct amplitude of impulse 20T
(Ref. B)
d3) Trend of the color at the base of the 20T rectilinear
(Ref. C)
d4) Luminosity bar rising and training edges (Ref. D) without
signs of overshoot or undershoot
(Ref.
E,
F)
If the absence of the CCIR-17 signal, a
MULTIBURST signal can be used turning
the EQUAL CV1 or EQUAL CV2 trimmer
until the amplitude of the last BURST is
equal to that of the first.
When shipped, the DA204 is set as follows:
- EQUAL CV1 and EQUAL CV2 trimmer
: zero (fully counterclockwise)
- Dip-switches 75
Ω
1
and
2
:
ON
-
Dip-switches
1+2
1
and
2
:
OFF
ELPRO Video Labs s.r.l.
Via della Praia, 4/A 10090 Ferriere di Buttigliera Alta (TO) ITALY
Tel.+39 0119348778 – Fax +39 0119348779
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