Sony HDV HVR-Z7E, Service Manual, Page: 327 / 507

6-137
HVR-Z7J/Z7U/Z7N/Z7E/Z7P/Z7C
8. Audio Level Control Check
Mode CAMERA mode
Signal 1 kHz, –50 dBu signal:
XLR terminal (INPUT1, 2)
Measurement Point Audio L and R terminal of A/V OUT
jack
Measuring Instrument Oscilloscope
Note 1:
0 dBu = 0.775 Vrms/balance
Switch setting
1) INPUT1 switch .............................................................. MIC
2) INPUT2 switch .............................................................. MIC
3) AUTO/MAN switch (CH1) ........................................... MAN
4) AUTO/MAN switch (CH2) ........................................... MAN
Checking method:
1) Input 1 kHz, –50 dBu signal in the XLR terminal (INPUT1).
2) Input 2 kHz, –50 dBu signal in the XLR terminal (INPUT2).
3) Press the STATUS CHECK button to display the Audio Infor-
mation screen.
4) Rotating the CH1 AUDIO LEVEL control, check that Lch
waveform level of A/V OUT jack varies.
5) Rotating the CH2 AUDIO LEVEL control, check that Rch
waveform level of A/V OUT jack varies.
Note 2: Along with the waveform check with the oscilloscope,
check that the level meter on the STATUS CHECK screen
varies.
9. REC CH SELECT Check
Mode CAMERA mode
Signal 1 kHz, –50 dBu signal:
XLR terminal (INPUT1)
100 Hz, –50 dBu signal:
XLR terminal (INPUT2)
Measurement Point Audio L and R terminal of A/V OUT
jack
Measuring Instrument Oscilloscope
Specified value Audio L: 1 kHz signal
(REC CH SELECT: Audio R: 100 Hz signal
CH1)
Specified value Audio L: 1 kHz signal
(REC CH SELECT: Audio R: 1 kHz signal
CH1•CH2)
Note:
0 dBu = 0.775 Vrms/balance
Switch setting
1) INPUT1 switch ................................................................ MIC
2) INPUT2 switch ................................................................ MIC
Checking method:
1) Input 1 kHz, –50 dBu signal in the XLR terminal (INPUT1).
2) Input 100 Hz, –50 dBu signal in the XLR terminal (INPUT2).
3) Set the REC CH SELECT switch to “CH1”.
4) Check that the 1 kHz signal is output from the audio L termi-
nal.
5) Check that the 100 Hz signal is output from the audio R termi-
nal.
6) Set the REC CH SELECT switch to “CH1•CH2”.
7) Check that the 1 kHz signal is output from the audio L termi-
nal.
8) Check that the 1 kHz signal is output from the audio R termi-
nal.