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6.
28 MHz Original Oscillation Adjustment
(VC-170 board)
Adjust the 28 MHz oscillation of the synchronization clock.
If the oscillation is not 28 MHz, the period will be inaccurate or the
image will not be in color.
Subject
Not required
Measurement Point
CL40l(IC402@pin)
Measuring Instrument
Frequency counter
Adjusting Element
CT401
Specified Value
14318181 ±71Hz(NTSC)
14187500 ± 70Hz(PAL)
Adjusting method:
1)
Use CT401 to adjust the oscillation frequency to
14318181±71 Hz (14187500 ± 70Hz).
7.
V SUB Adjustment
Set the CCD imager V SUB voltage to the voltage specified for the
imager.
Subject·
Not required
Adjustment Page
F
Adjustment Address
04
Adjusting Method:
1)
Read the V SUB voltage code of the CCD imager.
Obtain the corresponding V SUB data from the following
table.
2)
Set data: 01 to page: 6, address: 00.
3)
Set the V SUB data to page: F, address: 04.
4)
Press the PAUSE button of the adjusting remote commander.
VSUB
VSUB
I
I
I
I
Voltage
1
Data
1
Voltage
Voltage
1
Data
1
Voltage
Code
I
I
(Vdc)
*1
Code
I
I
(Vdc)
* 1
70
9.0
I
AC
I
14.0
e
I
q
I
I
f
I
77
9.5
r
I
B2
I
14.5
I
I
I
g
I
7C
10.0
s
B8
15.0
I
I
h
I
82
10.5
I
t
I
BE
I
15.5
j
I
88
11.0
u
I
C4
I
16.0
I
I
I
k
8E
11.5
V
CA
16.5
I
I
I
I
I
94
12.0
w
I
DO
I
17.0
I
9A
12.5
I
D6
I
17.5
m
X
I
I
I
n
I
AO
13.0
y
I
DD
I
18.0
I
A6
13.5
I
E2
I
18.5
p
I
I
z
I
I
7-13
8.
VRG Adjustment
Set the CCD imager V RG voltage to the voltage specified for the
imager.
Subject
Not required
Adjustment Page
F
Adjustment Address
05
Adjusting Method:
1)
Read the VRG voltage code of the CCD imager.
Obtain the corresponding VRG data from the following table.
2)
Set data: 01 to page: 6, address: 00.
3)
Set the VRG data to page: F, address: 05.
4)
Press the PAUSE button of the adjusting remote commander.
VRG
Voltage Code
I
Data
I
Voltage(Vdc)
*2
1
I
34
I
1.0
I
I
2
I
4E
I
1.5
3
I
69
I
2.0
I
I
4
I
83
I
2.5
5
I
9E
I
3.0
I
I
6
I
B8
I
3.5
7
I
D3
I
4.0
I
I
(Example) When "6m" is displayed:
The V SUB voltage code is "m" and therefore the V
SUB data will be"9B".
The VRG voltage code is "6" and therefore the VRG
data will be "B8".
Fig. 7-6.
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