Panasonic CT32SC13G Service Manual - Page 78

MTS circuit adjustments

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http://tsn.pstc.panasonic.com/viewing/NA/CT-36SL13G/SVC/s1406000000.html 14.6 MTS circuit adjustments TOP PREVIOUS NEXT 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 TPE11. Filter Jig 2. Connect an RF signal generator to the RF antenna input. PROCEDURE 1. Apply the following signal from the RF signal generator: r Video: 100 IRE flat field, 30% modulation. r Audio: 300Hz, 100% modulation, monaural (70 ±5dB, 75Ω OPEN, P/S 10dB). Make sure that the 75s pre-emphasis is OFF. 2. Adjust the MTS input level adjustment "MTSIN" data until the RMS voltage measured is http://tsn.pstc.panasonic.com/viewing/NA/CT-36SL13G/SVC/s1406000000.html (1 of 3)05.12.2008 0:03:31

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14.6 MTS circuit adjustments
TOP
PREVIOUS
NEXT
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 TPE11.
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% modulation, monaural (70 ±5dB, 75
Ω
OPEN, P/S 10dB). Make sure
that the 75
μ
s pre-emphasis is OFF.
2.
Adjust the MTS input level adjustment “MTSIN” data until the RMS voltage measured is