file:///C:/AA/Nowy%20folder/NA/CT-32HL44J/SVC/s1510000000.html
15.10 MTS circuit adjustmens
The MTS circuit adjustments require two steps:
1. Input level adjustment.
2. Stereo separation adjustment.
Input level adjustment
Service DAC adjustment (MTSIN)
PREPARATION
1. Connect an RMS meter with filter jig as shown in figure to TPA19 (L_OUT)
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% modulation, monaural (70 ±5dB, 75Ω OPEN, P/S 10dB). Make
sure that the 75μs pre-emphasis is OFF.
2. Adjust the MTS input level adjustment MTSIN data until the RMS voltage measured is
106 ± 6.0mVrms.
Stereo separation adjustment (SEPAH)
PREPARATION
1. Connect an R.F. signal generator to the RF antenna input.
2. Connect a scope to TPA20.
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Содержание CT30WC14J - 30" COLOR TV
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