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6 Care and maintenance
Look after your AR7000 and you should enjoy many years of monitoring. There are
no internal operator adjustments. In the unlikely event of servicing being required,
please contact your dealer for technical assistance.
6.1 Power supply
The AR7000 is designed for operation from its supplied a.c.-to-d.c. adapter.
Operation is possible from a d.c. supply of 12 to 14V, which should be able to supply
up to 2.0A
The d.c. input socket uses a mini coaxial power connector which is configured
CENTRE POSITIVE, the chassis of the receiver is at negative ground. The power
supply provided is pre-wired and provides a regulated nominal 12V d.c. output with
suitable connectors being fitted as standard for the a.c. power input and connection
to the AR7000 (for each world market area).
Although the AR7000 has no special rear panel socket for a connection of an RF
earth, a separate earth may be connected to the chassis ground connectors (RS232,
video, audio, BNC) then on to a water pipe, central heating system radiator or
external earth rod. If fitting a separate external earth rod, consider the implications
carefully if your a.c. building supply uses a Protective Multiple Earth (PME) system. If
in doubt consult an expert electrician. Never earth to a gas pipe!
SAFETY NOTICE - Always disconnect the power supply from the a.c. socket
when not in use.
6.2 Installation
Do not use or leave the receiver in direct sunlight (especially the LCD). Always
disconnect and earth any external aerial system if an electrical storm is expected.
Avoid a rapid disconnection then reconnection of the power supply. If disconnected,
leave at least five seconds before reconnecting again. Ensure that all power
connections are secure. Avoid strong RF fields from nearby transmitters. If in doubt,
disconnect the AR7000 from the aerial and switch the set off.
6.3 Colour LCD
Always take care of the LCD screen which is fragile. Avoid knocking, banging or
scratching the LCD, do not expose to direct sunlight or high temperatures.
6.4 Cleaning
Always keep the receiver free from dust and water. Use a soft, dry cloth to gently
wipe the AR7000 clean. Never use abrasive cleaners or organic solvents which may
damage certain parts.
7 Controls and Function
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