6-14
7. HALL adjustment
Purpose :
Variation of the HALL element outputs is
removed by adjusting amplifier gain and offset.
The HALL elements detect the lens iris
position.
Adjustment error :
Oscillation of lens iris, or incorrect white
balance indoor and outdoor.
Subject
Not required
Measurement Point
DDS display on the EVF or monitor
Measuring Instrument
TV
Adjustment Page
F
Adjustment Address
40
41
Specification
13h to 17h when iris is opened.
79h to 7Dh when iris is closed.
Adjustment procedure:
Note :
Lower two digits of the data which is displayed at the right
bottom of he EVF or TV monitor
Order
Page
Address
Data
Procedure
1
6
00
01
After setting the data, press the PAUSE button. (Preparation)
2
F
02
21
After setting the data, press the PAUSE button.
3
Turn off the UNREG power supply once, then turn it on.
4
6
00
01
After setting the data, press the PAUSE button.
5
6
02
03
After setting the data, press the PAUSE button.
6
6
01
03
After setting the data, press the PAUSE button.
7
F
40
40
After setting the data, press the PAUSE button. Read the data appearing on the DDS
display note. The read-out data is W
2
.
8
F
40
30
After setting the data, press the PAUSE button. Read the data appearing on the DDS
display note. The read-out data is W
1
.
9
6
01
01
After setting the data, press the PAUSE button.
10
F
40
30
After setting the data, press the PAUSE button. Read the data appearing on the DDS
display note. The read-out data is K
1
.
11
F
40
40
After setting the data, press the PAUSE button. Read the data appearing on the DDS
display note. The read-out data is K
2
.
12
Convert the data W
1
, W
2
, K
1
and K
2
into the decimal numbers. The result decimal numbers
are W
1
', W
2
', K
1
' and K
2
'. (Use page 6-13
〈
How to convert the hexadecimal number to
decimal number
〉
or “Hexadecimal-Decimal Conversion Table”.) Calculate the following
equation (decimal number calculation) to obtain X
1
'.
13
A' = W
2
' + K
1
' – W
1
' –K
2
' ............................ equation 1
B' = W
1
' –K
1
'
....................................... equation 2
X
1
' =
1600 + (48
×
A')–(16
×
B') .................... equation 3
A'
14
Convert the decimal number X
1
' to the hexadecimal number to obtain X
1
. (Round the
number X
1
to count fractions of 0.5 and over as a unit and cut away the rest.)
15
F
40
Set the data X
1
(obtained at step 14).
16
Press the PAUSE button.
17
F
41
Change the data using the PLAY and STOP until 15h appears on the DDS display.
18
Press the PAUSE button.
19
6
01
03
After setting the data, press the PAUSE button.
20
If the DDS display shows the data in the range from 79h to 7Dh, it indicates the end of
adjustment, and proceed to the item “Processing after Adjustments”. If it is not, use the
DDS display data as W
0
and proceed to step 21 and followings.
Summary of Contents for Handycam CCD-TR501E
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