Sony DVCAM DSR-45P, Руководство по обслуживанию

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5-94
DSR-45/45P
6. HEAD PHONE Check
Mode STOP
Signal Audio: 1 kHz, –10 dBs signal
AUDIO IN terminal (CH-1, 2)
Measurement Point HEAD PHONE terminal (L, R)
Measuring instrument Audio level meter
Specified Value –21 to –15 dBV
Note 1:
0 dBs = 0.775 Vrms
Note 2:
0 dBV = 1 Vrms
Switch setting
INPUT LEVEL select switch .......................... –10
AUDIO REC LEVEL control knob (CH-1 to 4)
.......... The position at –10 dB Check of E-E Level Check
Menu setting (AUDIO SET menu)
AUDIO MODE ................................................ FS32K
Checking method:
1) Enter 1 kHz, –10 dBs signal to the AUDIO IN terminal (CH-1).
2) Set the HEADPHONE LEVEL control knob to the maximum.
3) Measure the output of HEADPHONE terminal (L) at this time
to check that it satisfies the specified value.
4) Connect a headphone to the HEADPHONE terminal, and ro-
tate the HEADPHONE LEVEL control knob from maximum
to minimum.
5) Check at this time that the sound on L channel varies smoothly.
6) For the R channel, make a checking in the same manner.
7. E-E Maximum Input Check
(1) –10dB Check
Mode STOP
Signal Audio: 1 kHz, +18 dBs signal
AUDIO IN terminal (CH-1 to 4)
Measurement Point Pin
2
and
3
of AUDIO OUT
terminal (CH-1 to 4)
Measuring instrument Oscilloscope
Specified Value No clip is found in the output
waveform.
Note:
0 dBs = 0.775 Vrms
Switch setting
INPUT LEVEL select switch .......................... –10
Menu setting (AUDIO SET menu)
AUDIO MODE ................................................ FS32K
Checking method:
1) Enter 1 kHz, +18 dBs signal to the AUDIO IN terminal (CH-1).
2) Measure the output waveform at
2
pin and
3
pin of the AU-
DIO OUT terminal (CH-1), when the AUDIO REC LEVEL
control knob on the front panel is rotated toward rather throttle
side.
3) Check at this time that no clip is found in the output wave-
form.
4) For the CH-2 to 4, make a checking in the same manner.
(2) +4dB Check
Mode STOP
Signal Audio: 1 kHz, +30 dBs signal
AUDIO IN terminal (CH-1 to 4)
Measurement Point Pin
2
and
3
of AUDIO OUT
terminal (CH-1 to 4)
Measuring instrument Oscilloscope
Specified Value No clip is found in the output
waveform.
Note:
0 dBs = 0.775 Vrms
Switch setting
INPUT LEVEL select switch .......................... +4
Menu setting (AUDIO SET menu)
AUDIO MODE ................................................ FS32K
Checking method:
1) Enter 1 kHz, +30 dBs signal to the AUDIO IN terminal (CH-1).
2) Measure the output waveform at
2
pin and
3
pin of the AU-
DIO OUT terminal (CH-1), when the AUDIO REC LEVEL
control knob on the front panel is rotated toward rather throttle
side.
3) Check at this time that no clip is found in the output wave-
form.
4) For the CH-2 to 4, make a checking in the same manner.