3-57
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
1. Check the Initial Data
1.
To enter the maintenance mode, press S1101(G-1) on
the SS-63 board.
2.
Enter A35 : DM VR 4, then check that the data of the
following items in A35 : DM VR 4 are the specified
data value. (If not, set them to the specified data.)
(This is OMC DC offset setting data check.)
Item (A35 : DM VR 4)
Initial data
OMC DC METAL-Y
E4
OMC DC METAL-C
D0
OMC DC OXIDE-Y
D0
OMC DC OXIDE-C
D0
3.
To exit A35 : DM VR 4, press the MENU button once.
4.
Enter A34 : DM VR 3, then check that the data of the
all items in A34 : DM VR 3 are the specified data
value. (If not, set them to the specified data.)
Initial data
Initial data
Item (A34 : DM VR 3)
for NTSC
for PAL
SUB METAL-Y-A
AF
B2
SUB METAL-Y-B
AF
B2
SUB METAL-C-A
70
91
SUB METAL-C-B
70
91
SUB OXIDE-Y-A
B2
BB
SUB OXIDE-Y-B
B2
BB
SUB OXIDE-C-A
A7
A8
SUB OXIDE-C-B
A7
A8
5.
To exit A34 : DM VR 3, press the MENU button once.
6.
Enter A33 : DM VR 2, then check that the data of the
all items in A33 : DM VR 2 are the specified data
value. (If not, set them to the specified data.)
Initial data
Initial data
Item (A33 : DM VR 2)
for NTSC
for PAL
MAIN METAL-Y-A
CD
B7
MAIN METAL-Y-B
CD
B7
MAIN METAL-C-A
8E
8D
MAIN METAL-C-B
8E
8D
MAIN OXIDE-Y-A
A6
A8
MAIN OXIDE-Y-B
A6
A8
MAIN OXIDE-C-A
9E
9E
MAIN OXIDE-C-B
9E
9E
2. METAL Y Adjustment
1.
Short-circuit TP4/DM-89(E-1) and E702/DM-89(D-1)
with a shorting clip.
2.
Connect the network analyzer’s output to TP103/DM-
89(E-6). GND: E103/DM-89(F-6)
3.
Insert the following alignment tape in order to set
STANDBY OFF mode.
NTSC model: CR5-1B, PAL model: CR5-1B PS
Group delay adjustment / METAL Y
4.
Connect the oscilloscope’s CH-2 input to TP104/DM-
89 (F-5). GND: E104/DM-89(G-5)
5.
Adjust the group delay time in 2 MHz through 12
MHz.
Adj. points:
1
RV101/DM-89(E-5) and
1
RV102/DM-89(E-5)
Specification: 0
±
20 ns
6.
For NTSC model only:
Adjust the delay time at 6 MHz using 2 MHz as the
reference.
Adj. point:
1
RV101/DM-89(E-5)
Specification: A =
_
10
±
3 ns
[ns]
+
20
0
2
12
[MHz]
_
20
[ns]
0
2
6
[MHz]
A
3-8. Analog Betacam PB System Alignment
3-8-5. Cosine Equalizer Adjustment
