Instruction manual

83
8.5.5 Fault in other
electrical equipment
Problem:
Fault in other electrical equipment, particularly radio and television
receivers
Possible cause:
a) Wiring problems
Remedy
Lamp cables should be short, far enough away ( > 5 cm) from
earthed metallic parts and, if possible, not laid parallel to mains
cables (particularly in the luminaire). If cross-overs are needed they
must be at right angles. The mains cables must also be as short as
possible.
Possible cause:
b) Electrical equipment, radios and televisions are inadequately
immunity to interference
Remedy:
Increase the distance between the luminaire and the equipment, if
necessary, contact the manufacturer.
Possible cause:
c) The IR remote control signals for TV operate at a similar frequency
to the ECG
Remedy:
Move the IR receiver ont the TV out of the readiation field of the
lamp or disable it.
8.5.6 Problems at master-
slave operation
Problem:
Problems on master-slave arrangements for 2lamp ECGs
Possible cause:
Wiring problems
Remedy:
Lamp cables should be short, far enough away ( > 5 cm) from
earthed metallic parts and, if possible, not laid parallel to mains
cables (particularly in the luminaire). If cross-overs are needed they
must be at right angles. The mains cables must also be as short as
possible. In master-slave arrangements the maximum length of the
cable to the daughter luminaire must not be exceeded.
8.5.7 Humingh or
“chirping” from the
ECG
Problem:
Huming or “chirping” from the ECG
Possible cause:
Non-sinusoidal AC voltage
Remedy:
Eliminate sources of interference if necessari in consultation with
the electricity supplire.