Sony HVR-V1U Service Manual page 306

Digital hd video camera recorder
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1. Microphone Power Supply Check
Mode
CAMERA mode
Signal
No signal
Measurement Point
XLR terminal (INPUT1, INPUT2)
+ probe: pin 2, 3
– probe: pin 1
Measuring Instrument
Digital voltmeter
A = 46.0 ± 3.0 V
Specified value
Checking method:
1) Connect the + probe of digital voltmeter to the pin 2 on the
INPUT1.
2) Set the +48V switch (INPUT1) to "ON".
3) Check that the DC voltage (A) satisfies the specified value.
4) Connect the + probe of digital voltmeter to the pin 3 on the
INPUT1.
5) Check that the DC voltage (A) satisfies the specified value.
6) Set the +48V switch (INPUT1) to "OFF".
7) For the INPUT2, perform checking in the same manner.
HVR-V1J/V1U/V1N/V1E/V1P/V1C
2. INPUT1 LINE Check
Mode
Signal
Measurement Point
Measuring Instrument
Specified value
Menu setting (AUDIO SET menu)
XLR SET
1) INPUT1 LEVEL ............................................................. LINE
Checking method:
1) Input 1 kHz, +3.47 Vp-p (+4 dBs) signal in the XLR terminal
(INPUT1).
2) Check that the 1 kHz signal level is the specified value.
3. INPUT2 LINE Check
Mode
Signal
Measurement Point
Measuring Instrument
Specified value
Menu setting (AUDIO SET menu)
XLR SET
1) INPUT2 LEVEL ............................................................. LINE
Checking method:
1) Input 1 kHz, +3.47 Vp-p (+4 dBs) signal in the XLR terminal
(INPUT2).
2) Check that the 1 kHz signal level is the specified value.
6-142
CAMERA mode
1 kHz, +3.47 Vp-p (+4 dBs) signal:
XLR terminal (INPUT1)
Audio L terminal of A/V OUT jack
Oscilloscope
1.037 Vp-p to 1.643 Vp-p
(–4.5 dBs ± 2 dB)
CAMERA mode
1 kHz, +3.47 Vp-p (+4 dBs) signal:
XLR terminal (INPUT2)
Audio R terminal of A/V OUT jack
Oscilloscope
1.037 Vp-p to 1.643 Vp-p
(–4.5 dBs ± 2 dB)

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