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6-57
DCR-HC39E/HC41/HC42/HC42E/HC43/HC43E
3-6.
AUDIO SYSTEM ADJUSTMENTS
(Except DCR-HC39E)
(Except DCR-HC39E)
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments in addition to
the video system measuring instruments as shown in Fig. 6-3-10.
the video system measuring instruments as shown in Fig. 6-3-10.
Fig. 6-3-10
1.
Playback Level Check
Mode
Playback (PLAY/EDIT mode)
Signal
Alignment tape:
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
(XH5-3 (NTSC))
(XH5-3P (PAL))
Measurement Point
Audio left or right terminal of A/V
jack
jack
Measuring Instrument
Audio level meter and frequency
counter
counter
Specified Value
32 kHz mode: 1 kHz, + 3.0
±
2.0 dBs
48 kHz mode: 1 kHz, + 3.0
±
2.0 dBs
44.1 kHz mode:
The 7.35 kHz signal level during EMP
OFF is +2.0
The 7.35 kHz signal level during EMP
OFF is +2.0
±
2.0 dBs.
The 7.35 kHz signal level during EMP
ON is
ON is
−
6
±
2 dB from the signal level
during EMP OFF.
Note:
NTSC model: DCR-HC41/HC43
PAL model: DCR-HC42E/HC43E
PAL model: DCR-HC42E/HC43E
Checking Method:
1) Check that the playback signal level is the specified value.
1) Check that the playback signal level is the specified value.
2. Overall Level Characteristics Check
Mode
Recording and playback (PLAY/
EDIT mode)
EDIT mode)
Signal
400 Hz,
−
7.5 dBs signal:
Audio left and right terminal of A/V
jack
jack
Measurement Point
Audio left or right terminal of A/V
jack
jack
Measuring Instrument
Audio level meter
Specified Value
–7.5
±
3.0 dBs
Checking Method:
1) Input the 400 Hz, –7.5 dBs signal in the audio left and right
1) Input the 400 Hz, –7.5 dBs signal in the audio left and right
terminal of A/V jack.
2) Record the signal.
3) Remove the input signal.
4) Playback the recorded section.
5) Check that the 400 Hz signal level is the specified value.
3) Remove the input signal.
4) Playback the recorded section.
5) Check that the 400 Hz signal level is the specified value.
Audio
oscillator
Attenuator
600
Ω
600
Ω
(270
Ω
(1-249-410-11) +330
Ω
(1-249-411-11))
Main unit
Main unit
47 k
Ω
47 k
Ω
: 1-249-437-11
Audio level meter or
distortion meter
TV monitor
A/V jack
A/V jack
L
R
Video
Audio (L)
Audio (R)
In Recording (PLAY/EDIT mode)
In Playback (PLAY/EDIT mode)
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