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V-Correction Adjustment (D02)
Preparation:
1. Apply a Crosshatch pattern.
2. Adjust (D01) so that V-Size is regular size.
3. If b-a<-1.5mm (in top and bottom), increase (D02)
by one step and adjust (D01) so that V-Size is
regular; repeat steps until b-a
4. If b-a>-1.5mm (in top and bottom), decrease (D02)
by one step and adjust (D01) so that V-Size is
regular; repeat steps until b-a
Figure 34. V-Adjustment
MTS Circuit Adjustments
The MTS Circuit Adjustments require two steps:
1. Input Level Adjustment.
2. Stereo Separation Adjustment.
Input Level Adjustment (M00)
Preparation:
1. Connect an RMS meter with filter jig as shown in
Fig. 35.
RMS
METER
4700p
Figure 35. Filter Jig
2. Connect an RF signal generator to the RF
antenna input.
Procedure:
1. Apply the following signal from the RF signal
generator:
Video: 100 IRE flat field, 30% modulation.
Audio:
300Hz,
100%
(70 ±5dB, 75Ω OPEN, P/S 10dB).
2. Adjust the MTS Input Level Adjustment (M0) until
the voltage measured is 106 ± 6.0mV rms.
≤
1.5mm
≤
1.5mm.
TPE11
10k
modulation,
monaural
Stereo Separation Adjustment
(M01 & M02)
Preparation:
1. Connect an RF signal generator to the RF antenna
input.
2. Connect oscilloscope to TPE10.
Procedure:
1. Select Stereo Mode in Audio menu
2. Apply the following signal from the RF signal
generator:
Video: 100 IRE flat field, 30% modulation.
Audio: 300Hz, 100% modulation, stereo (left only)
(70 ±5dB, 75Ω OPEN, P/S 10dB).
3. Adjust the MTS Low-Level Separation Adjustment
(M01) until the amplitude displayed on the scope
is minimum.
4. Apply
the
following
signal generator:
Video: 100 IRE flat field, 30% modulation.
Audio: 3KHz, 100% modulation, stereo (left only)
(70 ±5dB, 75Ω OPEN, P/S 10dB).
5. Adjust the MTS High-Level Separation Adjustment
(M02) until the amplitude displayed on the scope is
minimum.
6. Repeat above steps 2 through 5 until the amplitude
is minimum for both signals.
- 33 -
signal
from
the
RF
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