E-9
1. INTRODUCTION
E-8
1. INTRODUCTION
Monitor screen
Smear
(Vertical pale streaking
appearing at high
luminous object)
High luminous object
(Electric light, sunlight, etc.)
Blooming
(Blurring in highlight)
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 be careful
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 malfunction
with 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.
1-8 Characteristic CCD Phenomena
Head drum
Video tape
REC
SAVE
Switch
The GY-DV700W can use any of the following battery packs.
●
Flat shape type
●
Anton-Bauer battery pack: Trimpack 13/14 Series
Magnum 13/14 Series
Compack 13/14 Series
Propack 13/14 Series
* An Anton-Bauer battery pack cannot be connected direct-
ly to the camera. It is necessary to mount the optional bat-
tery holder.
●
Battery holder: Anton-Bauer QRQ27
For details on how to mount the battery holder, see page
37.
●
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 condensation occurs in this unit, the DEW indicator
on the display lights up, and the WARNING LED blinks red.
(See page 86)
To remedy, leave the unit with the power ON and wait until
the WARNING LED stops blinking red and the DEW indicator
disappears from the counter display.
• 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.
1-6 Battery Pack to be Used
●
Use JVC’s videocassette tapes marked with MiniDV for
this unit.
Please use DVM60 or DVM30 type videocassettes.
●
Videocassettes cannot be used upside down.
●
Avoid storing a videocassette with unevenly wound tape,
as this may damage the tape. Rewind it to the beginning
before placing a cassette into storage.
●
Store videocassettes in a place with little humidity and good
ventilation where mould does not form.
●
After a videocassette tape has been used repeatedly, it
becomes unable to maintain full performance due to an
increase in noise caused by dropouts, etc. Do not continue
to use a dirty or damaged tape, as this will reduce the
rotary head life.
● Note that if an ME80 videocassette is used at low
temperatures, block noise tends to occur due to head
contamination.
To display the remaining battery power accurately, set the
VCR Setup Menu item No. 396 BATTERY TYPE according
to the type of the battery pack in use. (See page 69)
1-7 Condensation
1-5 Videocassette to be Used
● Videocassette tapes marked MiniDV are provided with
a switch on the back for use in preventing accidental
erasure.
●
Slide the switch to SAVE to protect the required recording
in the tape from being overwritten.
●
To record on the tape, slide the switch to REC.
DEW
indicator
Do not leave the videocassette inserted when moving the
camera under conditions where the temperature
environment changes.
1-4 Precautions for Use of Head Cleaning Tape
Adhere to the following precautions when using the head cleaning tape.
1. The tape runs for 10 seconds at a time in the PLAY mode. (The tape stops automatically and then
the unit enters the SAVE MODE. However, the display back light is not turned off.)
Press the PLAY button after the cleaning tape is fully loaded.
2. Do not use the tape more than four times at the most for each cleaning.
3. The cleaning tape can be used approximately 100 times.
■Use the following chart as a guide for periodical head cleaning.
Operating Low temperature Room temperature High temperature
environment 0˚C to 10˚C10˚C to 35˚C35˚C to 40˚C
Yardstick for use 1 to 2 times 1 to 2 times 1 to 2 times
of cleaning tape every 5 hours every 20 to 30 hours every 5 hours
Note 1) When used in a low humidity environment (10% RH to 30% RH), head cleaning should be
conducted at intervals half of those given in the above chart.
Note 2) When an ME80 tape is used immediately after head cleaning, the VTR warning (head) indica-
tor may remain on. In this case, let the tape run as the indicator will turn off after the tape has
run for a while.
Note 3) Use the cleaning tape in the room temperature (10˚C to 35˚C).
Note 4) The cleaning tape case contains instructions for use of the cleaning tape. However, some of
these instructions differ from the contents of this sheet. When using the cleaning tape, please
follow the instructions of this sheet.
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