ENVIRONMENTAL AND EMC
6.1.
Recommended Operating Conditions
Temperature
0oC to 40oC
Humidity (non condensing)
0% to 95%
6.2.
Storage
Temperature
-25oC to +85oC
Humidity
6.3.
CE and FCC Compliance
CE:
This product complies with the requirements of 2004/108/EC Electromagnetic Compatibility
Directive, and 2006/95/EC Low Voltage Directive. Compliance is to EN55022 Class A.
FCC:
WARNING:
This equipment has been tested and found to comply with the limits for a Class
A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to
provide
reasonable protection against harmful interference when the equipment is
operated in a
commercial environment. This equipment generates uses and can
radiate radio frequency
energy and, if not installed and used in accordance with the
instruction manual, may cause
interference to radio communications. Operation of
this equipment in a residential area is likely to cause interference in which case the user
will be required to correct the interference at their
own expense.
The user is cautioned that changes and modifications made to the equipment without
approval of
the manufacturer could void the user’s authority to operate this equipment.
It is suggested that the user use only shielded and grounded signal cables to ensure
compliance with FCC rules.
6.4.
PAT Testing
Earth continuity testing under PAT regulations shall be done to the VP-794 with 8A or 10A only. A test
with 25A may damage the unit.
In fact, VP-794 is IT equipment and the IEE Code of Practise to check earth continuity suggests an
alternative 20-200mA test. If the PAT tester does not provide this method and a high current test is to be
used instead a 8A or 10A test will be acceptable under the same IEE Code of Practise (a minimum of
1.5 times of the VP-794 internal 5A fuse).
You have to be careful where you connect the earth bond test lead when using 8A or 10A. It is to the
metal chassis that you must connect the test lead (mains earth). DO NOT CONNECT to the connectors
of the rear panel (signal earth). The VP-794 may never work again.
