2. Hi8/standard 8mm AFM 1.5 MHz Deviation4. Digital8 Playback Level Check
Adjustment (VC-213 board)ModeVTR playback
Adjust to the optimum 1.5MHz audio FM signal deviation.
SignalDigital8 alignment tape:
If the adjustment is not correct, its playback level will differ from
For audio operation check
that of other units.
(WR5-3ND (NTSC))
ModePlayback
(WR5-3CD (PAL))
SignalHi8/standard 8mm alignment tape:
Measurement PointAudio output terminal left or right
For checking AFM stereo operation
Measuring Instrumentudio leA vel meter and frequency counter
Monoscope section
Specified Value32 kHz mode: 1 kHz, +3.0 ? 2.0dBs
(WR5-9NS(NTSC))
48 kHz mode: 1 kHz, +3.0 ? 2.0dBs
(WR5-9CS(PAL))
44.1 kHz mode:
Measurement PointAudio output terminal left or right
The 7.35kHz signal level during EMP
Measuring Instrument Audio level meterOFF is +2.0 ? 2.0dBs.
Adjustment PageFThe 7.35kHz signal level during EMP
ON is �6 ? 2 dB from the signal level
Adjustment Address62
during EMP OFF.
Specified Value�7.5 ? 2.0dBs
Checking Method:
Adjusting method:
1) Check that the playback signal level is the specified value.
1) Select page: 0, address: 01, and set data: 01.
2) Set the Hi-Fi sound switch (menu display) to O1�.
3) Select page: F, address: 62, change the data and set the 400Hz
5. Overall Level Characteristics Check
signal level to the specified value.
ModeCamera recording and playback
4) Press the PAUSE button.
5) Set the Hi-Fi sound switch (menu display) to OSTEREO�.Signal400Hz, �66 dBs signal: MIC jack left
6) Select page: 0, address: 01, and set data: 00.and right
Measurement PointAudio output terminal left or right
Measuring Instrument Audio level meter
3. Hi8/standard 8mm AFM 1.7 MHz Deviation
Specified Value�7.5 ? 3.0dBs
Adjustment (VC-213 board)
Adjust to the optimum 1.7MHz audio FM signal deviation.
Checking Method:
If improper, this causes deteriorated separation (with stereo signal).
1) Input the 400Hz, �66dBs signal in the MIC jack.
ModePlayback
2) Record in the camera mode.
SignalHi8/standard 8mm alignment tape:
3) Playback the recorded section.
For checking AFM stereo operation
4) Check that the 400Hz signal level is the specified value.
Monoscope section
(WR5-9NS(NTSC))
(WR5-9CS(PAL))
6. Overall Distortion Check
Measurement PointAudio output terminal left or right
ModeCamera recording and playback
Measuring Instrument OscilloscopeSignal400Hz, �66dBs signal: MIC jack left
Adjustment PageFand right
Adjustment Address63Measurement PointAudio left or right terminal of AUDIO
VIDEO jack
Specified Value�7.5 ? 2.0dBs
Measuring Instrument Audio distortion meter
Adjusting method:
Specified ValueBelow 0.4%
1) Select page: 0, address: 01, and set data: 01.
(200Hz to 6kHz BPF ON)
2) Set the Hi-Fi sound switch (menu display) to O2�.
3) Select page: F, address: 63, change the data and set the 1kHz
Checking Method:
signal level to the specified value.
1) Input the 400Hz, �66dBs signal in the MIC jack.
4) Press the PAUSE button.
2) Record in the camera mode.
5) Set the Hi-Fi sound switch (menu display) to OSTEREO�.
3) Playback the recorded section.
6) Select page: 0, address: 01, and set data: 00.
4) Check that the distortion is the specified value.
5-69 |
ACEC
