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1. INTRODUCTION
Monitor screen
Smear
(Vertical pale streaking
appearing at high
luminous object)
High luminous object
(Electric light, sunlight, etc.)
Blooming
(Blurring in highlight)
●
If the unit has been cooled down in a cold place and is then
carried to a warm place, the moisture contained in the warm
air may adhere to the head drum or tape guides and be cooled
into water droplets. This phenomenon is referred to as
condensation (dewing). When this occurs, the head drum and
tape guides are covered with droplets allowing the tape to be
stuck to them, leading to tape damage.
●
Condensation occurs in the following cases:
• When the unit is suddenly moved
from a cold place to a warm place.
• When a room heater has just started
or when the unit is exposed directly
to cold air from an air conditioner.
• When the unit is placed in a very
humid place.
1-6 Condensation
Smear and Blooming
Due to the physical structure of a CCD it is possible to induce
vertical streaking (called “smear“) when shooting an extremely
bright light source. Another effect is the expansion of light around
a bright light or object (called “blooming“).
The CCD employed in this unit is characterized by inducing
very little smear or blooming. Nevertheless, please take note
that smear or blooming may be indured when shooting a bright
light source.
Moire or Aliasing
Shooting stripes or fine patterns may cause a jagged effect or
a banding in fine mesh patterns.
White dots
High temperatures can cause CCD sensor pixels to produce
the effect of white dots in the image. This condition is
conspicuous especially when gain is applied.
This is a characteristic of the charged-coupled device (CCD).
As far as possible, use the unit under conditions where the
temperature of the unit does not increase.
1-7 Characteristic CCD Phenomena
Do not leave the videocassette inserted when moving the
camera under conditions where the temperature
environment changes.
After moving the unit, do not use until the internal parts
have stabilized.
●
“CONDENSATION ON DRUM” is displayed on the LCD
monitor and in the viewfinder when condensation occurs in
this unit.
Head drum
Video tape
WARNING 0201
CONDENSATION ON DRUM
Keep the power on until the warning message disappears.
●
Pay attention to condensation even before the condensation
indication appears.
• As condensation forms gradually, the condensation
indication may not appear for the first 10-15 minutes after
condensation has formed inside.
• In an extremely cold place, the condensation could freeze
and turn into frost. In such a case, it takes an additional 2-
3 hours for the frost to first melt into condensation and
then to be dissolved.
●
To prevent condensation when moving the unit from one place
to another where the temperatures are greatly defferent, first
remove the videocassette, place the unit in a tightly sealed
vinyl bag, and then move it to a new environment.
To ensure no condensation occurs, allow the temperature of
the unit in the bag to reach that of the new environment before
using it.
e02_3_dv5100u(09_11)e.p65
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