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5-50
3. BPF f0 Adjustment (VC-195 board)
Sets the BPF passing frequency so that the AFM signal can separate
from the playback RF signal properly. If deviated. the mono/stereo
mode will be differentiated incorrectly, and noises and distortions
will increase during high volume playback.
from the playback RF signal properly. If deviated. the mono/stereo
mode will be differentiated incorrectly, and noises and distortions
will increase during high volume playback.
Mode
Playback
Signal
Alignment tape:
For BPF adjustment
(WR5-11NS)
(WR5-11NS)
Measurement Point
Audio output terminal left or right
Measuring Instrument
distortion meter
Adjustment Page
F
Adjustment Address
47
Specified Value
The Main and Sub channel distortion
rate should be almost the same
(within
rate should be almost the same
(within
±
1%) and minimum.
Adjusting method :
1) Select page: 0, address: 01, and set data: 01.
2) Set the Hi-Fi sound switch (menu display) to “2”.
3) Select page: F, address: 47, change the data and minimize the
1) Select page: 0, address: 01, and set data: 01.
2) Set the Hi-Fi sound switch (menu display) to “2”.
3) Select page: F, address: 47, change the data and minimize the
distortion rate.
4) Press the PAUSE button of the adjusting remote commander.
5) Set the Hi-Fi sound switch (menu display) to “1”.
6) Select page: F, address: 47, change the data and minimize the
5) Set the Hi-Fi sound switch (menu display) to “1”.
6) Select page: F, address: 47, change the data and minimize the
distortion rate.
7) Press the PAUSE button of the adjusting remote commander.
8) Repeat steps 2) to 7) and set the data of address: 47 so that the
8) Repeat steps 2) to 7) and set the data of address: 47 so that the
distortions rates when the Hi-Fi sound switch is set to “2” and
set to “1” respectively are almost the same and minimum.
set to “1” respectively are almost the same and minimum.
9) Press the PAUSE button of the adjusting remote commander.
11) Select page: 0, address: 01, and set data: 00.
12) Set the Hi-Fi sound switch to “STEREO”.
11) Select page: 0, address: 01, and set data: 00.
12) Set the Hi-Fi sound switch to “STEREO”.
3-7.
MONAURAL AUDIO SYSTEM ADJUSTMENT
MONAURAL
(CCD-TR57/TR67/TR87/TR413PK/ TR414PK)
MONAURAL
(CCD-TR57/TR67/TR87/TR413PK/ TR414PK)
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments besides the video
system measuring instruments as shown Fig. 5-3-25.
Connect the audio system measuring instruments besides the video
system measuring instruments as shown Fig. 5-3-25.
Fig. 5-3-25.
Audio
generator
generator
Attenuator
600
Ω
Parts cord 600
Ω
:
270 (1-249-410-11) + 330 (1-249-411-11)
AUDIO
terminal
terminal
Audio level meter
or distortion meter
or distortion meter
47 k
Ω
Parts cord 47 k
Ω
: 1-249-437-11
AUDIO
terminal
terminal
• Connection of Audio generator and attenuator.
• Connection of Audio level meter or distortion meter
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