Sony DNW-A100 Maintenance Manual page 95

3. METAL C Adjustment
1. Short-circuit TP6/DM-89(D-1) and E702/DM-89(D-1)
with a shorting clip.
2. Connect the network analyzer's output to TP303/DM-
89(B-5). GND: E301/DM-89(B-7)
n
The alignment tape (CR5-1B or CR5-1B PS) is still in the
VTR. (STANDBY OFF mode)
Group delay adjustment / METAL C
3. Connect the oscilloscope's CH-2 input to TP304/DM-
89(B-5). GND: E302/DM-89(B-5)
4. Adjust the group delay time in 3 MHz through 9 MHz.
1RV301/DM-89(A-5) and
Adj. points:
1RV302/DM-89(A-5)
Specification: 0 ± 20 ns
NTSC model
[ns]
+20
0
_20
3
PAL model
[ns]
+20
0
_20
3
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
http://getMANUAL.com
9 [MHz]
9 [MHz]
3-8. Analog Betacam PB System Alignment
Main adjustment / METAL C
5. Enter A33 : DM VR 2.
6. Connect the oscilloscope's CH-2 input to TP7/DM-89
(C-1). GND: E702/DM-89(D-1)
7. Adjust the level at 8 MHz using 2 MHz as the refer-
ence.
Adj. point: A33 : DM VR 2 : MAIN METAL-C-A
Specification: B = +0.5 ± 0.5 dB
NTSC model
[dB]
A
0
2 8
PAL model
[dB]
A
0
2 8
8. Set the data of "MAIN METAL-C-B" in A33 : DM
VR 2 to the identical data value as "MAIN METAL-
C-A".
9. To exit A33 : DM VR 2, press the MENU button once.
3-8-5. Cosine Equalizer Adjustment
A(*)MAG: 1 dB
[MHz]
A(*)MAG: 1 dB
[MHz]
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