No. 51806
AV-27GFH
28
Item
Measuring
instrument
Test point
Adjustment part
Description
MTS FILTER
check
Signal
generator
Oscilloscope
No.7 PILOT CAN
No.8 FILTER
1. Receive a RF signal (MTS pilot sound signal) from the antenna
terminal.
2. Select the No.7 PILOT CAN of the SOUND MODE, and reset
the 1 selecting value from to 1.
3. Connect the oscilloscope to pin No.2 of MPX connector and
GND.
4. Adjust to mini. wave level by No.8 FILTER.
5. Select the No.7 PILOT CAN of sound mode, and reset the
setting value from 1 too.
MTS
SEPARATION
adjustment
TV audio
multiplex
signal
generator
Oscilloscope
L OUT
R OUT
[AUDIO OUT]
No.9 LOW SEP.
No.10 HI SEP.
1. Input a stereo L signal (300Hz) from the TV audio multiplex
signal generator to the antenna terminal.
2. Connect an oscilloscope to L OUT RCA pin of the AUDIO
OUT, and display one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to R OUT RCA pin
of the AUDIO OUT, and enlarge the voltage axis.
4. Select the “No.9 LOW SEP.” of the SOUND MODE.
5. Set the initial setting value of the “No.9 LOW SEP.” with the
LEFT/RIGHT key of the menu.
6. Adjust the “No.9 LOW SEP.” so that the stroke element of the
300Hz signal will become minimum.
7. Change the signal to 3kHz, and similarly adjust the “No.10 HI
SEP.”.
L-Channel
signal waveform
R-Channel
crosstalk portion
Minimum
1 cycle
