Recording Level Adjustment; Meter Adjustment - Panasonic AJ-D400P Service Manual

9-3. Recording Level Adjustment

BOARD Audio LCD
SPEC. -20dBu ± 0.2dB
TEST Multi Connector (CH1, CH2)
ADJUST VR102, VR202
NTSC : 1kHz 4dBu Sine Wave
INPUT
PAL : 1kHz 0dBu Sine Wave
MODE STOP
<1> Audio Precision, VFK1210
M.EQ
<2> VTVM, SHAN-C12TCA, CR Oscillator
SW Setting
AUDIO IN CH1 : REAR, LINE
AUDIO IN CH2 : REAR, LINE
AUDIO SELECT : MANUAL
<1. Using Audio Precision>
1. Connect multi connector with Audio Precision using
VFK1210.
2. Set the AUDIO LEVEL VRs to center position.
3. Input the signal mentioned above to AUDIO IN CH1
connector.
4. Adjust the VR102 so that the level of CH 1 OUT
(multi connector) is within specification.
5. Input the signal mentioned above to AUDIO IN CH2
connector.
6. Adjust the VR202 so that the level of CH 2 OUT
(multi connector) is within specification.
<2. Using VTVM>
1. When using VTVM, connect multi connector with
VTVM with SHAN-C12TCA.
(Red : CH1, Black : CH2)
2. Follow the same procedure as <1. Using Audio
Precision>.
3. Use the cable shown below to input signal.

9-4. Meter Adjustment

BOARD Audio LCD
SPEC. NTSC : 0.63 ± 0.005V
PAL : 0.71 ± 0.005V
TEST TP102, TP202
ADJUST VR103, VR203
NTSC : 1kHz 4dBu Sine Wave
INPUT
PAL : 1kHz 0dBu Sine Wave
MODE STOP
<1> Digital Volt Meter, Audio Precision
M.EQ
<2> Digital Volt Meter, CR oscillator
SW Setting
AUDIO IN CH1 : REAR, LINE
AUDIO IN CH2 : REAR, LINE
AUDIO SELECT : MANUAL
<1. Using Audio Precision>
1. Input the signal mentioned above to AUDIO IN CH1
connector.
2. Adjust the VR103 so that the DC voltage at the
TP102 is within specification.
3. Input the signal mentioned above to AUDIO IN CH2
connector.
4. Adjust the VR203 so that the DC voltage at the
TP202 is within specification.
5. Confirm that the Audio Level Meter on LCD indi-
cates one scale higher than -20dB.
<2. Using CR Oscillator>
1. Follow the same procedure as <1. Using Audio
Precision>.