Sony DNW-A100 Maintenance Manual page 115

3. METAL C Adjustment
1. Watch the R-Y output signal on the analog component
waveform monitor.
n
As the R-Y(B-Y) output is overlapped the outputs of A
channel and B channel on the component waveform
monitor, adjust/check the level at each channel.
2. During play back the alignment tape in PLAY mode,
measure level at 7T BAR (NTSC) / 8T BAR (PAL).
PB portion: Multi-burst signal (8:00 to 11:00) of
CR5-1B (NTSC) / CR5-1B PS (PAL)
This measured level is reference level 100% (0 dB).
3. Restart the playback of alignment tape from the top of
PB portion in PLAY mode.
PB portion: The same as step 2
4. To operate the maintenance mode, press the MENU
button once.
5. Adjust the level at 1 MHz (NTSC) / 1.5 MHz (PAL).
PB portion: The same as step 2
Adj. points:
A channel: A32 : DM VR 1 : EQ1 METAL-C-A
B channel: A32 : DM VR 1 : EQ1 METAL-C-B
Specifications (A and B channels):
See the table below.
6. To perform the tape operation, press the SET button
once.
7. During play back the alignment tape in PLAY mode,
check each level at the other frequency parts.
PB portion: The same as step 2
Specifications (A and B channels):
See the table below.
8. Watch the B-Y output signal on the component
waveform monitor.
9. Check that the B-Y output signal levels at every
frequencies are within specifications shown below.
If the B-Y output signal is out of specifications,
perform fine adjustment for R-Y until the specifica-
tions for R-Y and B-Y output signals.
10. Eject the alignment tape.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
http://getMANUAL.com
Specifications for NTSC model
Frequency
1 MHz
0.2 MHz
0.5 MHz
1.5 MHz
100%
Specifications for PAL model
Frequency
1.5 MHz
0.2 MHz
0.5 MHz
1 MHz
2 MHz
100%
3-8. Analog Betacam PB System Alignment
3-8-12. PB Frequency Response Adjustment
Specification for NTSC model
(Level at 0.5 MHz is 100% {0 dB}.)
Adjust: 94% (100 to 89%)
Check: 100% (106 to 63%) {0
Check: 80% (106 to 71%) {_2.0
7T BAR 0.2 0.5 1
Specification for PAL model
(Level at 8T BAR is 100% {0 dB}.)
Adjust: 93% (102 to 85%)
Check: 100% (106 to 71%) {0
Check: 80% (106 to 71%) {_2.0
8T BAR 0.2 0.5 1 1.5 2
{_0.5 ± 0.5 dB}
+0.5
dB}
_3.0
+2.5
dB}
_1.0
1.5 2 [MHz]
{_0.6 ± 0.8 dB}
+0.5
dB}
_3.0
+2.5
dB}
_1.0
[MHz]
3-79