Installing D4 - Dedicated Micros D4 Anleitung

Installing
Before You Start:
Check the contents of the box:
D4 unit
IR remote handset
PSU
Mains cable with three pin plug fitted (North America)
Mains cable without plug fitted (other regions)
485-bus cable (with ferrite clamp fitted)*
Choosing a Location for Installation
D4 is designed to be desk mounted. The following precautions must be taken
when installing D4:
• If the unit is to be installed in a closed assembly, the operating ambient
o
temperature must not exceed 40
• Openings in the unit's case are provided for ventilation and to prevent
overheating, these openings should not be blocked or covered.
• When stacking units, ensure there is at least a 1/2" (1.5 cm) gap between
each unit.
• Ensure there is a 1" (3cm) gap on either side of the unit.
• Ensure the unit is not located in an area where it is likely to be subjected to
mechanical shocks.
• The unit should be located in an area with low humidity and a minimum of
dust. Avoid places like damp basements or dusty hallways.
• If using external storage, refer to the manufacturer's instructions for
placement details.
• Ensure there is reliable earthing of the mains outlet when fitted to supply
connections other than direct connection to the branch circuit.
4
C.
• When connecting D4 to a branch circuit, this must be rated 15Amps.
• It is recommended that a UPS (Un-interruptible Power Supply) be
connected to the unit in case of power failure. This will ensure the continuos
operation of the D4.
* When adding 485-bus accessories, the 485-bus cable must be fitted with the ferrite clamp
nearest the D4.
A Quick Overview of Digital Recording
Digital multiplex recorders work in exactly the same way as analogue
multiplexers except that they use hard disks and digital tape to store video,
instead of VCR tapes. Analogue recording uses time-lapse recording to extend
the length of time recorded onto 2 or 3-hour tape – recording fewer pictures
every second.
Adjusting the number of pictures recorded every second also extends the
length of time recorded onto the hard disk of a D4. However, other factors also
determine the amount of time that can be stored on the disk of a digital
multiplex recorder:
• The image quality.
• The record rate.
• The hard disk capacity.
Image Quality
Digital multiplex recorders store images in a compressed format, allowing
images to be recorded more efficiently. The higher the compression, the
smaller the file size, but the image quality will suffer. D4 can compress images
between 6KB and 45KB.
Kilobytes and Gigabytes are units of storage:
1 GB = 1024 Megabytes (MB)
1 MB = 1024 Kilobytes (KB)