Fujifilm S-VHS 4001594 Merkblatt
Produktcode
4001594
A
nalogue tape cassettes are, despite what
some would have you think, reliable
archiving devices. The vast majority of
some would have you think, reliable
archiving devices. The vast majority of
modern CCTV solutions still use VHS video
cassettes, and this fact alone underlines that
such media offers both reliability and acceptable
image quality in a cost-effective package! Using
good quality tapes which have been designed
with security applications in mind is the first step
when seeking reliability and efficiency from
tapes, but it is not the only consideration.
cassettes, and this fact alone underlines that
such media offers both reliability and acceptable
image quality in a cost-effective package! Using
good quality tapes which have been designed
with security applications in mind is the first step
when seeking reliability and efficiency from
tapes, but it is not the only consideration.
If unsuitable tapes are used in a security
application, it is inevitable that archived
images might not give the level of quality
which users expect. However, even when high
quality tapes are used, the results could be
disappointing performance-wise if they are not
treated correctly.
images might not give the level of quality
which users expect. However, even when high
quality tapes are used, the results could be
disappointing performance-wise if they are not
treated correctly.
Due to the familiarity most people have with
VHS cassette tapes, many of the guidelines for
correct tape care have been forgotten. Indeed,
the importance of careful tape care is often
ignored because tape is a resilient and durable
medium. However, as even a slight aberration
could make evidential video unusable, it is worth
briefly considering some of the main issues
which can lead to poor tape performance.
correct tape care have been forgotten. Indeed,
the importance of careful tape care is often
ignored because tape is a resilient and durable
medium. However, as even a slight aberration
could make evidential video unusable, it is worth
briefly considering some of the main issues
which can lead to poor tape performance.
• Regularly replace tapes as a part of service
agreements. Observe the 12 pass rule, and
ensure that all cassettes are replaced after 12
uses. Although the images may seem fine,
additional uses could accelerate degradation.
agreements. Observe the 12 pass rule, and
ensure that all cassettes are replaced after 12
uses. Although the images may seem fine,
additional uses could accelerate degradation.
• Don’t touch the actual tape as your fingers
naturally have a layer of oil which can
contaminate both the tape and the heads of
the VCR.
naturally have a layer of oil which can
contaminate both the tape and the heads of
the VCR.
• Check the tape for slack prior to use. If it is
loose inside the cassette, it is more likely to
crease, twist, jam or snap during recording or
playback. Tapes have an integral reel brake to
stop slackness from occurring, but vibration or
loose inside the cassette, it is more likely to
crease, twist, jam or snap during recording or
playback. Tapes have an integral reel brake to
stop slackness from occurring, but vibration or
rough handling can cause slackness to occur.
Before use, check the tension of the tape by
gently winding the cassette hub with your
finger. Do not use an object to turn the cassette
hub, as this may overtighten the tape.
Before use, check the tension of the tape by
gently winding the cassette hub with your
finger. Do not use an object to turn the cassette
hub, as this may overtighten the tape.
• Avoid condensation which can be caused
when tapes are moved from a cold storage
environment to a warmer one, such as a control
room. By allowing a cassette to reach room
temperature prior to use, you avoid
condensation which can cause the tape to stick
to internal components of the recording device.
Control rooms are notoriously warm due to the
equipment they contain, so cassettes should be
allowed to stabilise for a few hours if they are
stored in a colder area. Optimum conditions are
0-35°C for storage; 5-35°C for operation.
Humidity should be 40-60 per cent.
when tapes are moved from a cold storage
environment to a warmer one, such as a control
room. By allowing a cassette to reach room
temperature prior to use, you avoid
condensation which can cause the tape to stick
to internal components of the recording device.
Control rooms are notoriously warm due to the
equipment they contain, so cassettes should be
allowed to stabilise for a few hours if they are
stored in a colder area. Optimum conditions are
0-35°C for storage; 5-35°C for operation.
Humidity should be 40-60 per cent.
• Degauss tapes prior to reuse to erase any
data. Also, degauss tapes prior to disposal to
ensure that the Data Protection Act is
complied with.
data. Also, degauss tapes prior to disposal to
ensure that the Data Protection Act is
complied with.
• Do not store tapes in sunlight or near to heat
sources such as radiators or ducts. Ensure that
the storage area is dry and that the tapes can be
protected from dust and other contaminants.
Ensure tapes are not stored within magnetic
fields, such as those caused by speaker units,
electro-mechanical devices, etc.. Store tapes
upright to avoid warping, and always keep them
in their protective sleeves when not in use.
sources such as radiators or ducts. Ensure that
the storage area is dry and that the tapes can be
protected from dust and other contaminants.
Ensure tapes are not stored within magnetic
fields, such as those caused by speaker units,
electro-mechanical devices, etc.. Store tapes
upright to avoid warping, and always keep them
in their protective sleeves when not in use.
• Always remove cassettes from the VCR when
they are not in use. Tapes can be subject to
stretching or wrinkling if not removed, and
performance will deteriorate as a result. Also,
rewind tapes prior to removal as this reduces the
possibility of tape damage.
they are not in use. Tapes can be subject to
stretching or wrinkling if not removed, and
performance will deteriorate as a result. Also,
rewind tapes prior to removal as this reduces the
possibility of tape damage.
• Use a head cleaning tape as any build-up of
dust or other contaminants can scratch the
surface of the tape. If scratches are large, this
dust or other contaminants can scratch the
surface of the tape. If scratches are large, this
can cause white streaks
or ‘dropouts’ where particles
of the magnetic layer are removed
from the tape. When using a head-cleaning tape
- Fujifilm can supply these to installers - ensure
that runs are limited to about 10 seconds or
head-wear will be accelerated. If two or three 10
second passes do not clear the heads, consult a
service engineer. As well as loss of image
information, other problems may occur if the
magnetic layer comes away from tape. The
autostop mechanism on a VHS-format video
cassette recorder uses a photosensitive cell that
receives a light-beam transmission, thereby
indicating that the transparent leader tape is
present. As a result, the video cassette recorder
may stop automatically if it detects an area of
the tape where the magnetic layer has been
removed.
- Fujifilm can supply these to installers - ensure
that runs are limited to about 10 seconds or
head-wear will be accelerated. If two or three 10
second passes do not clear the heads, consult a
service engineer. As well as loss of image
information, other problems may occur if the
magnetic layer comes away from tape. The
autostop mechanism on a VHS-format video
cassette recorder uses a photosensitive cell that
receives a light-beam transmission, thereby
indicating that the transparent leader tape is
present. As a result, the video cassette recorder
may stop automatically if it detects an area of
the tape where the magnetic layer has been
removed.
Video cassette tapes will usually give a very
high level of performance. If cassettes are
handled correctly, stored in the right
environment and used with consideration, they
will offer an optimum performance. Remember
that tapes are an important part of the security
system, and as such deserve the same respect
that would be given to any other piece of
equipment which is key to the success of the
system. By ensuring tape care management is
practiced as a part of any maintenance
programme, and by educating your customers
about tape care, the CCTV systems you supply
will offer reliable and effective recordings which
will be admissible as evidence.
handled correctly, stored in the right
environment and used with consideration, they
will offer an optimum performance. Remember
that tapes are an important part of the security
system, and as such deserve the same respect
that would be given to any other piece of
equipment which is key to the success of the
system. By ensuring tape care management is
practiced as a part of any maintenance
programme, and by educating your customers
about tape care, the CCTV systems you supply
will offer reliable and effective recordings which
will be admissible as evidence.
Maintenance and the correct use of CCTV systems are important
issues if the layer of security offered by a surveillance solution is to be
ensured. Any problems could lead to footage being unusable, which
might have the effect of crimes going undetected, or of criminals
walking free because the video which has been captured is not of
the required quality. Whilst maintenance of systems is an
important issue, sometimes not enough attention is focussed
upon the care of tapes! Here Fujifilm considers how tape
cassettes should be handled and stored to ensure that
valuable evidence is always retained in the best possible condition.
issues if the layer of security offered by a surveillance solution is to be
ensured. Any problems could lead to footage being unusable, which
might have the effect of crimes going undetected, or of criminals
walking free because the video which has been captured is not of
the required quality. Whilst maintenance of systems is an
important issue, sometimes not enough attention is focussed
upon the care of tapes! Here Fujifilm considers how tape
cassettes should be handled and stored to ensure that
valuable evidence is always retained in the best possible condition.
ADVERTISING FEATURE
HANDLE WITH CARE
FOR MORE INFORMATION ABOUT
FUJIFILM’S CCTV STARTER KITS, CONTACT:
Fuji Photo Film (UK) Ltd, Fujifilm House,
125 Finchley Road, London NW3 6HY
Web: www.fujifilm.co.uk/cctv
Email: recmedia@fuji.co.uk
Tel: 020 7465 5925 Fax: 0800 783 3664