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X’tal OSC CHECK
Mode
PB
Signal
Alignment tape, Stair step
Measurement Point
MA10 board IC802
%ª
pin(PAL)
Measurement Equipment
Oscilloscope
Specified Value
500±200mVp-p
Check:
1)Confirm the frequency is 4.433619MHz±100Hz(PAL).
2)Confirm the waveform amplitude is 500±200mVp-p.
Fig.3-3
SYNC AGC CHECK
4.433619MHz
±
100Hz (PAL)
500
±
200mVp-p
Mode
E-E
Signal
Color bar
Measurement Point
MA10 board Q830 emitter
Measurement Equipment
Oscilloscope
Specified Value
1.0±0.1Vp-p
Check:
Confirm the waveform amplitude is 1.0±0.1Vp-p.
Fig.3-4
CARRIER DEVIATION CHECK
1.0
±
0.1Vp-p
Mode
E-E
Signal
Color bar
Measurement Point
MA10 board IC802
!•
pin
Measurement Equipment
Spectrum Analyzer
Specified Value
f
2
-f
1
=1.00±0.08MHz
Check:
Confirm f
2
-f
1
=1.00±0.08MHz
Confirm f
1
=3.80±0.13MHz(PAL)
Fig.3-5
WHITE/DARK CLIP CHECK
f
1
f
2
Mode
E-E
Signal
Color bar
Measurement Point
MA10 board IC802
#¶
pin
Measurement Equipment
Oscilloscope
Specified Value
190±20%(White), 55±20%(Dark)
Preparation: Add 3.3k r esistor between IC802
$™
pin and GND.
Check:
Taking the height from sync to white level as 100%, check
white clip and dark clip.
100%
White clip
Dark clip
Fig.3-6
Содержание KV-14FV1B
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