6-68
4-6.
OVERALL SIGNAL LEVEL, DISTORTION
AND SEPARATION CHECK
Mode
CAM-REC and playback
Signal
1
CN501 pin
4
:400Hz, –38dBs
CN501 pin
2
: No signal
*
2
CN501 pin
4
:No signal
CN501 pin
2
:400Hz, –38dBs
Measurement Point
AUDIO output terminal (Left)
*AUDIO output terminal (Right)
Measurement Instrument Audio level meter and distortion
meter
Specification Value
Signal level
(Note)
1
Left output : –7.5 ± 2dBs
Right output : –27.5dBs or less
*
2
Left output : –27.5dBs or less
Right output : –7.5 ± 2dBs
Distortion
Left/Right output : 0.8% or less
Note 1 :
The value when band-pass filter of 200Hz to 6kHz is used.
Note 2 :
Asterisk marks (*) are used in STEREO model.
4-7.
OVERALL NOISE LEVEL CHECK
Purpose :
Checks noise level.
Mode
CAM-REC and playback
Signal
No signal : VC-188 board CN501
(Note)
Measurement Point
AUDIO output terminal (Left/Right)
Measuring Instrument
Audio level meter
(using IHF-A curve weighting filter)
Specification Value
–65dBs or less
Note :
Before making short circuit between CN501 pin
3
and pin
4
, pin
3
and pin
2
(STEREO model only), remove the
flexible board from CN501
Check procedure:
Order
Procedure
1
Insert a shorting to pin
3
and pin
4
, pin
3
and pin
2
(STEREO model only) as CN501.
2
Make recording.
3
Remove the shorting plug.
*4
Playback the recorded segment.
*5
Confirm that the noise level at audio output terminal
(Left/Right) is –65dBs or less.
Order
Procedure
1
Input 400Hz, –38dBs signal to CN501 pin
4
. Short pin
2
and
3
of CN501.
2
Check that the right and left channels of AUDIO output terminal satisfy the specification
1
.
Check that distortion satisfies the specification.
*3
Input 400Hz, –38dBs signal to CN501 pin
2
. Short pin
3
and
4
of CN501.
*4
Check that the right and left channels of AUDIO output terminal satisfy the specification
2
.
Check that distortion satisfies the specification.
Summary of Contents for Handycam CCD-TR501E
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