Panasonic DVC PRO Studio AJ-D950P Service Manual page 681

4-4-6. CMRR Adjustment
Board A_ADDA (F8)
Specification
Test Point TP201 (CH1), TP202 (CH2),
TP251 (CH3), TP252 (CH4)
Adjustment VR1 (CH1), VR41 (CH2),
Point VR101 (CH3), VR141 (CH4)
Input Signal AUDIO
CH4)
Sinewave (CMTST)
Mode EE
Tape
M. EQ. Oscilloscope,
Audio Analyzer / Audio Precision
1. Connect the scope to TP201
2. Input same phase signal to HOT & COLD terminal
of CH1.
3. Adjust VR1 so that the CH1 output level is
minimum.
4. Repeat an adjustment in the same way about the
other Audio channels.
CMMR = Common Mode Reduction Ratio.
CMTST = Common Mode Test
IN(CH1, CH2, CH3,
4-4-7. Input level Adjustment
Board A_ADDA(F8)
Specification 0dBu+/-0.2dB
Test Point AUDIO OUT
(CH1, CH2, CH3, CH4)
Adjustment VR2 (CH1), VR42 (CH2),
Point VR102 (CH3), VR142 (CH4)
Input Signal AUDIO
CH4)
Sinewave (BAL)
Mode EE
Tape
M. EQ. Oscilloscope,
Audio Analyzer / Audio Precision
1. Adjust VR2 so that the CH1 level is 0dBu+/-
0.2dB.
2. Repeat an adjustment in the same way about the
other Audio channels.
IN(CH1, CH2, CH3,