Gain/Offset Adjustment - Sharp IV-S30 User Manual

Setting the Operating and System Conditions

[5] Gain/offset adjustment

The gain and offset of the IV-S30 can only be adjusted by our service engineers. Users
must not try to change them.
The data which can be adjusted is shown below for reference purpose only.
2
Generally, an image from the CCD camera can be optimized by adjusting the optical system, such as the
lens iris. To make fine adjustments, the IV-S30 is equipped with functions to adjust the offset and gain of
image signals from cameras 1 and 2 and the contrast on an external monitor screen.
- The gain and offset are adjusted by checking the display on the screen.
- The screen is kept in the through mode.
On the [MAIN OPS MENU], move the cursor to "SYS-CND" and press the SET key.
- On the [SYSTEM COND] menu, move the cursor to item "7GAIN-OFFSET"
and press the SET key.
Gain and offset adjustment
1
OFFSET (CAM1)
2
GAIN (CAM1)
3
OFFSET (CAM2)
4
GAIN (CAM2)
5
CONTRAST (MNTR)
[SYSTEM COND]
1I/O CONDITIONS (TO NEXT SUB-MENU)
6SELF DIAGNOSTICS EXEC
7GAIN-OFFSET
(TO NEXT SUB-MENU)
8TIME
2000Y 10M 05D 18H 56M
[GAIN-OFFSET]
1OFFSET(CAM1) + (
) - ( ) (035)
2GAIN(CAM1)
+ ( ) - ( ) (163
3OFFSET(CAM2) + (
) - ( ) (035)
4GAIN(CAM2)
+ ( ) - ( ) (163)
5CONTRAST(MNTR) + (
) - ( ) (055)
OPS-MENU RETURN LOCK
The offset for camera 1 is adjusted with the up and down keys.
- The complete signal level is shifted leaving the amplitude of
the image signals from the CCD camera unchanged. As the
offset value is increased, the whole screen will becomes
more white.
The gain for camera 1 is adjusted with the up and down keys.
- The amplitude of the image signals from the CCD camera is
changed. As the gain value is reduced, the screen will
become lighter, and as the gain value is increased, the
screen will become darker.
The offset for camera 2 is adjusted with the up and down keys.
- The adjustment procedure is the same as that in Item
The gain for camera 2 is adjusted with the up and down keys.
- The adjustment procedure is the same as that in Item
The monitor contrast is adjusted with the up and down keys.
- The intensity of image signals sent to the monitor is adjusted.
As the contrast value is increased, the contrast on the screen
will become stronger.
The average values are
displayed. Different models
use different values.
Details of adjustment (selection)
2-18
.
.