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VI 14208(N)
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 simde adjustment of the VP-1 PWB Ass'y.
2-2-1. TEST EQUIPMENT AND STANDARDS
REQUIRED
Color Bar Signal Generator
'-n
PAL Color barsignei with 100% white level (EBU color barsignel)
(Signal waveform is described below. Refer to Fig. 2.2.1)
Oscilloscope
Vertical sensitivity: 5 mV/DIV, external trigger
Band width: more than 10 MHz
Digital Voltmeter
DC range
Test Tape
VHJ-0008 or VHJ-0023: SP mode, color bar, lkHz
(Color bar signal waveform is described below. Refer to Fig. 2.2.3)
Blank Tape
VHS-type cassette tape
-"
—
I
I
I
Oscilloscope Probe
I Input capacity: less than 25 pF (10:1)
I
less than 40 pF (1:1)
Covering frequency: DC -40
MHz (10:1)
:X/l
.
DC-30
MHZ(I:I)
Frequency Counter
8 significant digits
Adjustment Relay Jig
VHJ-0065: 5-wire flat cable for VP-1 PWB Ass'y
.—
PAL TV TEST SIGNAL
WPVSCS
9
—
bite
Peak
Iv
Pedestal
Sync Tip
Level
Level
Level
1.S"C251
COLOR BAR SIGNAL WAVEFORM
Fig. 2.2.1
COLOR BAR PAITERN
MONITOR TV
Fig.
2.2.2
WPV.TCS
m
White
,
Iv
Vp-p
'H.Sync Signal
COLOR BAR SIGNAL WAVEFORM
(VHJ-0008)
Fig. 2.2.3
COLOR BAR PATFERN (VHJ-0008) ON MONITOR TV
Fig.
2.2.4
.
..
..."..
–8–
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