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VI-14212(I) 1/4
2-2. VIDEO CIRCUIT ADJUSTMENT
.
Before making the following adjustments, Section 2-1. SERVO CIRCUIT ADJUSTMENT
should be completed.
.
Use the relay jig to provide simple adjustment of the VP-1 PWB Ass'y.
2-2-1. TEST EQUIPMENT
AND STANDARDS
REQUIRED
Color Bar Signal Generator
PAL Color bar signel with 100% white level (EBU color barsignel)
(Signal waveform
is described below. Refer to Fig. 2.2.1)
I
Oscilloscope
Vertical sensitivity: 5 mV/DIV, external trigger
Band width: more than 10 MHz
Digital Voltmeter
DC range
I
Test Tape
I
VHJ-OO08 or VHJ-0023: SP mode, color bar, 1 kHz
(Color
bar signal waveform is described below. Refer to Fig. 2.2.3)
Blank Tape
VHS-type cassette tape
I
Oscilloscope Probe
Input capacity: less than 25 PF (10:1)
less than 40 pF (1:1)
Covering frequency: DC -40
MHz (10:1)
DC-30
MHZ(I:I)
Frequency Counter
8 significant digits
,
Adjustment Relay Jig
VHJ-0067: 12-wire flat cable for VP-1 PWB Ass'y
PAL TV TEST SIGNAL
WPV-SCS
a
bite Peak Level
Iv
Padestal Lavel
Sync 11PLevel
l-=l$nLl
COLOR BAR SIGNAL WAVEFORM
Fig. 2.2.1
WPV-SCP
(75%) –
m
COLOR BAR PAITERN
MONITOR TV
Fig. 2.2.2
WPV-TCS
~
,1
:,
.,
100% White
Iv
7
i
o.3vpp
A
~"~
\ Burst Signai
u
'H.Sync Signai
COLOR BAR SIGNAL WAVEFORM
(VHJ-0008)
Fig. 2.2.3
WW-TCP
w
~
g3
(75%)
gj~jg'~:
vu
100%
White
Black
COLOR BAR PATTERN (VHJ-0008) ON MONITOR TV
Fig. 2.2.4
–8–
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