Electronic iris function setting
Use a manual or fixed iris lens and set the lens aperture to the
shortest F stop. Set the
EI/BLC
switch (model VCB-3170P) to
EI
(electronic iris)
-ON
or the
EI
switch (model VCB-3100P)) to the
ON
position.
The dynamic range of the electronic iris will be as indicated in table
B
.
CAUTION:
•
The electronic iris is suitable for normal indoor use. When the
EI/BLC
or
EI
switch is set to the
EI-ON
or
EI
position, do not
use an auto-iris lens.
•
If used under fluorescent light, the image may flicker and
horizontal lines may appear in the picture. In such a case,
change to incandescent lighting or set the
EI/BLC
or
EI
switch to the
OFF
position and
use an auto-iris lens.
•
When shooting bright subjects, pay attention to the light angle in order to avoid or
minimize the smear phenomenon effect.
When using an auto-iris lens (for indoor/outdoor use)
Set the
EI/BLC
or
EI
switch to the
OFF
position.
CAUTION:
If conditions are outside the electronic iris operation range or more than the maximum
illumination, it will cause saturation of the CCD. In that case, use a manual iris lens.
Table B
Model
F stops
Minimum illumination
Maximum illumination
VCB-3170P
F 1.2
0.1 lux
26,000 lux
F 1.4
0.14 lux
34,000 lux
VCB-3100P
F 1.2
0.1 lux
57,000 lux
F 1.4
0.14 lux
78,000 lux
ON
OFF
ON
EI
BLC
(VCB-3170P)
ON
OFF
EI
(VCB-3100P)
L73M5, N5/XE GB 1996, 10, 31
10
English