4-6. OVERALL SIGNAL LEVEL, DISTORTION
AND SEPARATION CHECK
ModeCAM-REC and playback
Signal1 CN501 pin 4 :400Hz, �38dBs
CN501 pin 2 : No signal
*2 CN501 pin 4 :No signal200Hz6kHz
CN501 pin 2 :400Hz, �38dBs
Measurement PointAUDIO output terminal (Left)
*AUDIO output terminal (Right)18dB/OCT18dB/OCT
Measurement InstrumentAudio level meter and distortion
meter
Specification ValueSignal 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.
Check procedure:
OrderProcedure
1Input 400Hz, �38dBs signal to CN501 pin 4. Short pin 2 and 3 of CN501.
2Check that the right and left channels of AUDIO output terminal satisfy the specification 1.
Check that distortion satisfies the specification.
*3Input 400Hz, �38dBs signal to CN501 pin 2. Short pin 3 and 4 of CN501.
*4Check that the right and left channels of AUDIO output terminal satisfy the specification 2.
Check that distortion satisfies the specification.
4-7. OVERALL NOISE LEVEL CHECK
Purpose : Checks noise level.
ModeCAM-REC and playback
SignalNo signal : VC-188 board CN501
(Note)
Measurement PointAUDIO 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:
OrderProcedure
1Insert a shorting to pin 3 and pin 4, pin 3 and pin
2 (STEREO model only) as CN501.
2Make recording.
3Remove the shorting plug.
4Playback the recorded segment.
5Confirm that the noise level at audio output terminal
(Left/Right) is �65dBs or less.
6-80 |
ACEC
SONY
