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GX-NSE
aera |
Measuring
No] nor
| instrument
Test point and Adjustment part
|
Description
14.| SHADING
z
COMP.
Adjustment
(B-CH)
Oscillocope
H-rate
V-rate
10:1
R36 1/4
Vectorscope
TP-(Y-B)
TP-(Y-B)
R36(1/4)
V SAW
R36(2/4) V PB
R36(3/4)
H SAW
R36(4/4) H PB
Adjustment procedure with oscilloscope
|
©
Set the iris to obtain
300
~
400mvV
at
TP-1.
1. Measure TP-(Y-B)
at H-rate and adjust R36
(3/4)
H SAW
and
R36 (4/4) H PB so that
the waveform becomes flat.
ape flat ap
Fig. 3-14 (a)
2. Measure TP-(Y-B) at V-rate and adjust R36
(1/4) V SAW and R36 (2/4) V PB so that the
waveform becomes flat.
|
|
!
TF to tat
Fig. 3-14 (b)
Adjustment procedure with vectorscope
©
Set the iris to obtain 300
~
400mV
at
TP-1.
2. Alternately adjust R36 (1/4)
V SAW,
R36
(2/4) V PB, R36
(3/4) H SAW,
and R36
(4/4) so that the carrier displayed on the
vectorscope
is positioned
at
center
and
minimized.
Fig. 3-14 {c)
(Note) The
adjustment
can
be facilitated
by
raising the gain of the vecotorscope.
26E (No. 5391B})
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