5-51
DCR-TRV240/TRV340
2. Hi8/Standard8 AFM 1.5 MHz Deviation Adjustment
(VC-276 board)
Adjust to the optimum 1.5MHz audio FM signal deviation.
If the adjustment is not correct, its playback level will differ from
that of other units.
Mode
Playback
Signal
Hi8/Standard8 alignment tape:
For checking AFM stereo operation
Monoscope section (WR5-9NS)
Measurement Point
AUDIO/VIDEO jack left or right
Measuring Instrument
Audio level meter
Adjustment Page
C
Adjustment Address
4C
Specified Value
–7.5 ± 2.0dBs
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Set the Hi-Fi SOUND switch (menu display) to “1”.
3)
Select page: C, address: 4C, change the data and set the 400Hz
signal level to the specified value.
4)
Press the PAUSE button.
5)
Set the Hi-Fi SOUND switch (menu display) to “STEREO”.
6)
Select page: 0, address: 01, and set data: 00.
3. Hi8/Standard8 AFM 1.7 MHz Deviation Adjustment
(VC-276 board)
Adjust to the optimum 1.7MHz audio FM signal deviation.
If improper, this causes deteriorated separation (with stereo signal).
Mode
Playback
Signal
Hi8/Standard8 alignment tape:
For checking AFM stereo operation
Monoscope section (WR5-9NS)
Measurement Point
AUDIO/VIDEO jack left or right
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4D
Specified Value
–7.5 ± 2.0dBs
Note:
The data of page: 0, address: 10 must be “00”.
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: C, address: 4D, change the data and set the 1kHz
signal level to the specified value.
4)
Press the PAUSE button.
5)
Set the Hi-Fi SOUND switch (menu display) to “STEREO”.
6)
Select page: 0, address: 01, and set data: 00.
4. Digital8 Playback Level Check
Mode
Playback
Signal
Digital8 alignment tape:
For audio operation check
(WR5-3ND)
Measurement Point
AUDIO/VIDEO jack left or right
Measuring Instrument
Audio level meter and frequency
counter
Specified Value
32 kHz mode: 1 kHz, +3.0 ± 2.0dBs
48 kHz mode: 1 kHz, +3.0 ± 2.0dBs
44.1 kHz mode:
The 7.35kHz signal level during
EMP OFF is +2.0 ± 2.0dBs.
The 7.35kHz signal level during
EMP ON is –6 ± 2 dB from the
signal level during EMP OFF.
Checking Method:
1)
Check that the playback signal level is the specified value.
5. Overall Level Characteristics Check
Mode
Recording and playback
Signal
400Hz, –66dBs signal: MIC jack left
and right
Measurement Point
AUDIO/VIDEO jack left or right
Measuring Instrument
Audio level meter
Specified Value
–7.5 ± 3.0dBs
Checking Method:
1)
Input the 400Hz, –66dBs signal in the MIC jack left and right.
2)
Record the signal.
3)
Playback the recorded section.
4)
Check that the 400Hz signal level is the specified value.
6. Overall Distortion Check
Mode
Recording and playback
Signal
400Hz, –66dBs signal: MIC jack left
and right
Measurement Point
AUDIO/VIDEO jack left or right
Measuring Instrument
Audio distortion meter
Specified Value
Below 0.4%
(200Hz to 6kHz BPF ON)
Checking Method:
1)
Input the 400Hz, –66dBs signal in the MIC jack left and right.
2)
Record the signal.
3)
Playback the recorded section.
4)
Check that the distortion is the specified value.
Содержание DCR-TRV240
Страница 102: ...5 1 DCR TRV240 TRV340 SECTION 5 ADJUSTMENTS ...
Страница 177: ... Take a copy of OPTICAL AXIS FRAME with a clear sheet for use 206 OPTICAL AXIS FRAME DCR TRV240 TRV340 ...
Страница 179: ...DCR TRV240 TRV340 208 Sony EMCS Co 2002A1600 1 2002 1 Published by DI Customer Center 9 929 932 31 ...
Страница 180: ...Revision History Ver 1 0 Date 2002 01 History Official Release Contents S M Rev issued 992993231 pdf Reverse ...