Sony HDV HVR-Z7E, Руководство по обслуживанию, Страница: 326 / 507

6-136
HVR-Z7J/Z7U/Z7N/Z7E/Z7P/Z7C
4. INPUT1 MIC Check
Mode CAMERA mode
Signal 1 kHz, –50 dBu signal:
XLR terminal (INPUT1)
Measurement Point Audio L terminal of A/V OUT jack
Measuring Instrument Audio level meter, Oscilloscope
Specified value –12 dBs
±
2 dB
Note 1: 0 dBu = 0.775 Vrms/balance
Note 2: 0 dBs = 0.775 Vrms
Switch setting
1) INPUT1 switch ................................................................ MIC
Checking method:
1) Input 1 kHz, –50 dBu signal in the XLR terminal (INPUT1).
2) Check that the 1 kHz signal level is the specified value.
5. INPUT2 MIC Check
Mode CAMERA mode
Signal 1 kHz, –50 dBu signal:
XLR terminal (INPUT2)
Measurement Point Audio R terminal of A/V OUT jack
Measuring Instrument Audio level meter, Oscilloscope
Specified value –12 dBs
±
2 dB
Note 1: 0 dBu = 0.775 Vrms/balance
Note 2: 0 dBs = 0.775 Vrms
Switch setting
1) INPUT2 switch ................................................................ MIC
Checking method:
1) Input 1 kHz, –50 dBu signal in the XLR terminal (INPUT2).
2) Check that the 1 kHz signal level is the specified value.
6. INPUT1 MIC ATT Check
Mode CAMERA mode
Signal 1 kHz, –50 dBu signal:
XLR terminal (INPUT1)
Measurement Point Audio L terminal of A/V OUT jack
Measuring Instrument Audio level meter
Specified value –18 dBs
±
2 dB
(INPUT1 TRIM: –6 dB)
Switch setting
1) INPUT1 switch ................................................................ MIC
Checking method:
1) Input 1 kHz, –50 dBu signal in the XLR terminal (INPUT1).
2) Set the INPUT1 TRIM (AUDIO SET menu: XLR SET) to
“–6dB”.
3) Check that the 1 kHz signal level is the specified value.
4) Set the INPUT1 TRIM (AUDIO SET menu: XLR SET) to
“0dB”.
7. INPUT2 MIC ATT Check
Mode CAMERA mode
Signal 1 kHz, –50 dBu signal:
XLR terminal (INPUT2)
Measurement Point Audio R terminal of A/V OUT jack
Measuring Instrument Audio level meter
Specified value –18 dBs
±
2 dB
(INPUT2 TRIM: –6 dB)
Note 1: 0 dBu = 0.775 Vrms/balance
Note 2: 0 dBs = 0.775 Vrms
Switch setting
1) INPUT2 switch ................................................................ MIC
Checking method:
1) Input 1 kHz, –50 dBu signal in the XLR terminal (INPUT2).
2) Set the INPUT2 TRIM (AUDIO SET menu: XLR SET) to
“–6dB”.
3) Check that the 1 kHz signal level is the specified value.
4) Set the INPUT2 TRIM (AUDIO SET menu: XLR SET) to
“0dB”.