Gain/Offset Adjustment - Sharp IV-C35M User Manual

[2] Gain/offset adjustment

The gain and offset of the IV-C35M 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.
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-C35M 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.
Setting method
On the MAIN MENU, select "SYS-CND" ->
"GAIN OFFSET" and the following message
will appear on the screen.
CHANGING A SETUP MAY LEAD TO A
MACHINE FAILURE. DO YOU CHANGE IT?
(YES=SET,NO=ESC)
Press the SET key the "GAIN OFFSET" screen at the right appears.
Gain and offset
adjustment
1
OFFSET (CAM1)
2
GAIN (CAM1)
3
OFFSET (CAM2)
4
GAIN (CAM2)
5
CONTRAST (MNTR)
Details of adjustment (selection)
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.
2-15
Setting the Operating and System Conditions
GAIN-OFFSET SCREEN COND SAVE
1OFFSET
(CAM1)
2GAIN
(CAM1)
3OFFSET
(CAM2)
4GAIN
(CAM2)
5CONTRAST (MNTR)
SET=VALUE INPUT ESC=BACK SEL=CHNG IMG TRG=FUNC
2
COLOR F C1 BRT
.
.