JVC TK-C1431 Instructions Manual page 15

MENU SETTING
ALC SETTINGS Screen (Continued)
Item Functions and set values
FAST LIMIT This sets the fastest value of a shutter speed when AUTO is set.
The MANUAL, M. ExDR, A. ExDR set value is displayed as "- - -" and
cannot be changed. The higher the shutter speed becomes, the more
smear phenomenon is emphasized, which is peculiar to the CCD.
[Set values: 1/1000, 1/2000, 1/4000, 1/10000, 1/20000, 1/40000, 1/100000]
ExDR This sets the signal level of the composing high-speed shutter during
LEVEL ExDR mode. This is set according to the brightness of a subject.
When using M.ExDR, be sure to set M.ExDR SPEED in advance.
When the SHUTTER/ExDR item is set to MANUAL or AUTO,
"- - -" appears, disabling setting.
To give priority to the low-brightness par ts of the subject...
increase the value
To give priority to the high-brightness par ts of the subject...
decrease the value
[Set values: –5 to NORMAL to 5]
MEMO
• In the case of a subject with a large difference in the luminous flux
density, sometimes images do not change even if ExDR LEVEL is
varied. However, this occurrence is a peculiarity of the unit and is
not a malfunction.
M.ExDR This sets the composing high shutter speed when ExDR is set to M.ExDR.
SPEED Set the shutter speed in order that a subject with a high luminous flux
density (outdoor, etc.) may come out most clearly. This is displayed as "-
- -" during MANUAL, AUTO or A. ExDR and cannot be set.
[Set values: 1/500, 1/1000, 1/2000, 1/4000, 1/10000, 1/20000]
AGC MODE
This sets a maximum gain of the AGC (Automatic Gain Control).
OFF: When the AGC function is not used.
10dB: When luminous energy is insufficient.
20dB: When luminous energy is extremely insufficient.
SUPER: When brightness is insufficient even when it is set to 20dB.
• If the gain is increased, the screen gets rough in a dark place.
• If it is set to SUPER, it can sometimes consume operation time to
cope with a drastic level change.
• When the item "B&W" is set to "AUTO", [SUPER] is displayed when
the item "AGC MODE" is set to "SUPER", and [20dB] is displayed for
other settings. Increase the gain up to the value displayed.
LOLUX MODE Used when brightness is low even when setting the AGC MODE.
(Functions regardless of the AGC MODE setting.)
OFF: LOLUX MODE is off
ON: LOLUX MODE is on (+ 6dB)
SENSE UP
This item makes up a sensitivity should be heightened automatical-
ly when a subject becomes dark.
In case of the X32 AUTO, the sensitivity is automatically heightened
up to 32 times continuously as compared with standard.
As the sensitivity becomes higher, the shutter speed becomes lower,
resulting in unnatural motion.
If SHUTTER/ExDR is set to MANUAL or the M.ExDR,
"- - -" will appear, disabling the SENSE UP function.
[Set values: OFF, X2 AUTO, X4 AUTO, X8 AUTO, X16 AUTO, X32
AUTO]
MEMO
• When the magnification of SENSE UP is enhanced, the screen
can become coarse or whitish, or whitish flaws can emerge
sometimes, but this is not abnormal.
• When the item SENSE UP is set other than to OFF, a flicker can
occur under a fluorescent lamp, mercury lamp, etc. However, this
occurs by principle of SENSE UP, and therefore this is not a
malfunction.
E-28
Initial value Item
1/100000
PRIORITY
NORMAL
BLC
1/4000
20dB
OFF
OFF
Functions and set values
This item sets the order in which the AGC and slow shutter
speed decrease function when the object brightness
becomes low.
If B&W item of the B&W/COLOUR mode is set to AUTO, and the
AGC MODE item or the SENSE UP item is set to OFF, "- - -" will
appear, disabling any setting.
MOTION: Priority is given to motion.
This is suitable to a subject with quick motion,
since the AGC (automatic gain control) functions
with priority when the subject becomes dark.
PICTURE: Priority is given to image.
When the subject becomes dark, SENSE UP
(sensitivity goes up) functions with priority,
offering suitability that gives priority to image.
Sets the backlight compensation function. Set when a
bright light source, etc. is placed in the same direction as
the subject.
If the item SHUTTER/ExDR is set to the M.ExDR or the
A.ExDR, "- - -" will appear, and the BLC does not function.
OFF: The backlight compensation function does not work.
AREA 1 to AREA 4: When the SET button is pressed, the
fixed light metering areas are displayed. Select one of
the four types. (Indicated positions on the screen are rough
guides. Execute required settings after checking and
confirming the functions on actual images.)
Light Light Light Light
metering metering metering metering
area area area area
OFF AREA 1 AREA 2 AREA 3
* The indicated position on the screen should be used as
a rough guide.
EDIT 1 to EDIT 2: When the SET button is pressed, the
user light metering areas are displayed. Select one of the
two types.
"BLC EDITTING Screen" on page 36.
Initial value
MOTION
OFF
Light
metering
area
AREA 4
E-29