Setting (continued) – JVC VN-685U User Manual
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Setting Using Internet Explorer
Setting (continued)
AGC
For setting the AGC (automatic gain control) level.
Off
: Disables the AGC feature
Mid
: When the amount of light is insufficient
High
: When the amount of light is particularly insufficient
Super
: When the brightness level is insufficient even upon setting to
AHighB.
[Setting value:Off, Mid, High, Super]
Memo
:
● The screen appears grainy at dark locations when the AGC feature is in
use.
Sense Up
This feature is used to raise the sensitivity level by lengthening the
exposure time.
You can specify the number of times by which the sensitivity level is to be
increased automatically when the object becomes dark. When
Ax32B is
selected, the sensitivity is changed dynamically up to 32 times (as
compared to the
AOffB mode) to fit to current darkness. When sensitivity
increases, the shutter speed becomes slower and hence, movement
becomes unnatural. When set to
AOffB, Sense Up is disabled.
[Setting value:Off, x2, x4, x8, x16, x32, x64, x128]
Memo
:
● Upon raising the sensitivity level, the screen may appear grainy or
white, or white defects may occur. However, this is not a malfunction.
● When [Sense Up] is set to a value other than AOffB, flickers occur under
the light of fluorescent or mercury lamps. This is not a malfunction of
the camera, but is due to principles related to Sense Up.
● When the [Shutter Speed] item L is set to A1/100B to A1/10000B, set
[Sense Up] to
AOffB.
L
Shutter Speed
This item sets the speed of the electronic shutter.
When [Sense Up] item K is set to
Ax2B or above, available setting value is
A1/60B or A1/100B only.
[Setting value:1/60,1/100,1/250,1/500,1/1000,1/2000,1/4000,1/10000]
Memo
:
● Flickering of fluorescent lightings can be reduced when the shutter
speed is set to
A1/100B or A1/60B respectively in regions of commercial
power frequency 50 Hz and 60 Hz.
● The faster the shutter speed is, a smear phenomenon specific to CCD,
where white bands appear vertically along bright light source, is more
emphasized.
● The edges between high and low illumination area may appear rough.