Sony DVCAM DSR-25, Руководство по обслуживанию, Страница: 193 / 238

5-68
DSR-25
(3) +4dB Check
Mode STOP
Signal Audio: 1 kHz, +8 dBs signal
AUDIO INPUT terminal
(CH-1, 2)
Measurement Point AUDIO OUTPUT terminal
(CH-1, 2)
Measuring instrument Audio level meter
Specified Value AUDIO OUTPUT terminal
CH1: –12 to –8 dBV
CH2: –12 to –8 dBV
LCD monitor display
“–22” or “–20” or “–18”
Note 1: 0 dBV = 1 Vrms
Note 2: 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, +8 dBs signal to the AUDIO INPUT terminal
(CH-1, 2).
2) Check that the output of AUDIO OUTPUT terminal (CH-1, 2)
satisfies the specified value.
3) Check that the audio level indication on the LCD monitor shows
“–22”, “–20” or “–18”.
3. E-E Maximum Input Check
(1) –10dB Check
Mode STOP
Signal Audio: 1 kHz, +18 dBs signal
AUDIO INPUT terminal
(CH-1, 2)
Measurement Point AUDIO OUTPUT terminal
(CH-1, 2)
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
AUDIO INPUT mode select switch ................ VAR
Menu setting (AUDIO SET menu)
AUDIO MODE ................................................ FS32K
Checking method:
1) Enter 1 kHz, +18 dBs signal to the AUDIO INPUT terminal
(CH-1).
2) Measure the output waveform at the AUDIO OUTPUT termi-
nal (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, make a checking in the same manner.
(2) +4dB Check
Mode STOP
Signal Audio: 1 kHz, +30 dBs signal
AUDIO INPUT terminal
(CH-1, 2)
Measurement Point AUDIO OUTPUT terminal
(CH-1, 2)
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
AUDIO INPUT mode select switch ................ VAR
Menu setting (AUDIO SET menu)
AUDIO MODE ................................................ FS32K
Checking method:
1)
Enter 1 kHz, +30 dBs signal to the AUDIO INPUT terminal
(CH-1).
2) Measure the output waveform at the AUDIO OUTPUT 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 waveform.
4) For the CH-2, make a checking in the same manner.