AV-27GFH
Measuring
ItemTest pointAdjustment partDescription
instrument
MTS FILTERSignalNo.7 PILOT CAN1. Receive a RF signal (MTS pilot sound signal) from the antenna
checkgeneratorterminal.
No.8 FILTER2. Select the No.7 PILOT CAN of the SOUND MODE, and reset
Oscilloscopethe 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.
MTSTV audioL OUTNo.9 LOW SEP.1. Input a stereo L signal (300Hz) from the TV audio multiplex
SEPARATIONmultiplexR OUTsignal generator to the antenna terminal.
adjustmentsignal[AUDIO OUT]No.10 HI SEP.2. Connect an oscilloscope to L OUT RCA pin of the AUDIO
generatorOUT, and display one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to R OUT RCA pin
Oscilloscopeof 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-ChannelR-Channel
signal waveformcrosstalk portion
Minimum
1 cycle
28No. 51806 |
ACEC
