Sony Handycam DCR-DVD100, Руководство по обслуживанию, Страница: 132 / 174

6-42
DCR-DVD100/DVD100E
COVER
COVER
2-3. AUDIO SYSTEM ADJUSTMENTS
Switch setting:
REC MODE (DISC SET of Menu setting) ........................ LP
Note: Reset to SP, after completing adjustments.
Type of disc to use:
DVD-R
[Connection of Audio System Measuring Devices]
Connect the audio system measuring devices as shown in Fig. 6-2-6.
Note: In recording mode, input a color bar signal to the video input.
1. Overall Level Characteristics Check
Mode PLAY ( ) mode
Recording and playback
Signal 400Hz, -7.5dBs signal:
AUDIO L and AUDIO R terminal of
AUDIO/VIDEO jack
Measurement Point AUDIO L and AUDIO R terminal of
AUDIO/VIDEO jack
Measuring Instrument Audio level meter
Specified Value -7.5
±
1.0dBs
Checking Method
1)
Input the 400Hz, -7.5dBs signal in the AUDIO L and AUDIO
R terminal.
2) Record the signal.
3) Playback the recorded section.
4) Check that the 400Hz signal level is the specified value.
2. Overall Distortion Check
Mode PLAY ( ) mode
Recording and playback
Signal 400Hz, -7.5dBs signal:
AUDIO L and AUDIO R terminal of
AUDIO/VIDEO jack
Measurement Point AUDIO L and AUDIO R terminal of
AUDIO/VIDEO jack
Measuring Instrument Audio distortion meter
Specified Value Below 0.4% (200Hz to 6kHz BPF ON)
Checking Method
1)
Input the 400Hz, -7.5dBs signal in the AUDIO L and AUDIO
R terminal.
2) Record the signal.
3) Playback the recorded section.
4) Check that the distortion is the specified value.
3. Overall Noise Level Check
Mode PLAY ( ) mode
Recording and playback
Signal No signal:
AUDIO L and AUDIO R terminal of
AUDIO/VIDEO jack
Measurement Point AUDIO L and AUDIO R terminal of
AUDIO/VIDEO jack
Measuring Instrument Audio level meter
Specified Value Below -45dBs
(IHF-A filter ON, 20kHz LPF ON)
Checking Method
1)
Insert shorting plugs in each of AUDIO L and AUDIO R
terminal.
2) Record the signal.
3) Remove the shorting plugs.
4) Playback the recorded section.
5) Check that the noise level is the specified value.
Fig. 6-2-6.
[How to record the line input signal]
1)
Set the mode dial to PLAY/EDIT ( ).
2) Press the VISUAL INDEX button so that the line input video
signal is displayed on the LCD screen
3) Press the REC button.
Recording
Audio oscillator
Attenuator
600
Ω
Main unit
600
Ω
: 270
Ω
(1-249-410-11) + 330
Ω
(1-249-411-11)
Main unit
Left (White)
Right
47k
Ω
47k
Ω
Video (Yellow)
TV monitor
Audio level meter
or Distortion meter
47k
Ω
(1-249-437-11)
Playback
AUDIO/VIDEO
(Red)
Video
(Yellow)
Left
(White)
Right
(Red)
Pattern generator
Video output
(75
Ω
)
AUDIO/VIDEO