1-13
1.10 FUNCTIONS OF INTERNAL SWITCHES
1.10.1 DIP Switch S901 on ROM Board
Symbol ShipmentFunctionNameNo.
1 Adjustment mode Adjustment mode ON/OFF OFF
2 Check mode Check mode ON/OFF OFF
3 Not used OFF
4 Character mixing TEST OUT character display ON/OFF OFF
5 Not used OFF
6 Color matrix adjustment Color matrix adjustment mode ON/OFF OFF
7 Setup (NTSC model only) ON (0% setup)/ OFF (7.5% setup) OFF
8 Function setting Initial setting of camera functions OFF
S901
Table 1-10-1
(1) Adjustment mode (S901-1)
Set S901-1 to ON to initiate the camera electrical adjust-
ment mode.
For details, see section 3.3.
(2) Check mode (S901-2)
Set S901-2 to ON to display the camera’s check mode screen
on the viewfinder.
In this mode, the auto white balance and auto iris control
data in the microcomputer controlling the camera can be
viewed and checked. (This mode is not used for adjustments
but is intended to simply allow the checking of control val-
ues and their functions.)
R GAIN LEVEL/B GAIN LEVEL
Show the levels of the R and B channel white balance con-
trol signals.
These values are variable between 0 and 255.
The R value tends to decrease and the B value tends to
increase under low color temperatures (reddish lighting), and
the R value tends to increase and the B value tends to de-
crease under high color temperatures (bluish lighting).
PEAK
Shows the peak hold value of the video signal in a vertical
scanning period.
APL
Shows the average picture signal level.
NAM ERROR
Shows the NAM value used in the auto iris control.
The value is variable between -127 and 128.
The value approaches 0 when the auto iris control approaches
the optimum level.
GAIN
Shows the electrical gain value set with the GAIN switch on
the right-hand side of the unit.
Shows “ALC” in the full auto-shooting mode.
Fig. 1-10-1(1)
R-G/B-G
Shows the data on the R/G/B signals input to the CPU for
use in white balance control in terms of R-G and B-G. The
values are variable between -127 and 128.
These values approach 0 if the white balance circuit is acti-
vated by capturing a non-color image such as a gray scale.
–
CHECK MODE
–
R-G
B-G
R GAIN LEVEL
B GAIN LEVEL
PEAK
APL
NAM ERROR
GAIN ∗dB
: ∗
: ∗
: ∗
: ∗
: ∗
: ∗
: ∗
: ∗
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