Sharp IV-S20, User Manual

Page: 292 / 399

11
11-22
Setting the Input/Output Conditions
1
CAM1 OFFSET ADJ. +(
↑
)
−
(
↓
) (026)
2
CAMERA1 GAIN +(
↑
)
−
(
↓
) (245)
3
CAM2 OFFSET ADJ. +(
↑
)
−
(
↓
) (026)
4
CAMERA2 GAIN +(
↑
)
−
(
↓
) (245)
5
ADJ. MON CONTRAST +( ↑ )
−
( ↓ ) (050)
6
UPPER MENU
[ADJUST GAIN&OFFSET]
On the [MAIN OPS MENU], move the cursor to SET-SCRN and press the SET key.
-
On the [SYSTEM SETUP] menu, move the cursor to item
3
I/O CONDITIONS
and press the SET key.
-
On the [I/O SETTINGS] menu, move the cursor to item
0
GAIN OFFSET
and press the SET key.
The average values are
displayed. Different models
use different values.
Gain and offset adjustment
2
CAMERA1 GAIN
4
CAMERA2 GAIN
5
ADJ. MON CONTRAST
6
UPPER MENU
1
CAM1 OFFSET ADJ.
3
CAM2 OFFSET ADJ.
The screen will return to the [I/O SETTINGS] menu.
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
① .
The gain for camera 2 is adjusted with the up and down keys.
· The adjustment procedure is the same as that in Item
② .
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.
11-7 Gain/offset adjustment
The gain and offset of the IV-S20 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-S20 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.