D.A.S. M-14:2, Руководство по эксплуатации

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15
M-14:2
PROFESSIONAL STEREO MIXER
Points to Remember
Points to Remember
- In all cases, use good quality twin screened audio cable. Check for instability at the output.
- Always connect both conductors at both ends, and ensure that the screen is only connected at one end.
- Do not disconnect the mains earth from each piece of equipment. This is needed to provided both safety and
screen returns to the system star point.
- Equipment which has balanced inputs and outputs may need to be electrically isolated from the equipment
rack and/or other equipment, to avoid earth loops.
It is important to remember that all equipment which is connected to the mains it a potential source of hum and
interference and may radiate both electrostatic or electromagnetic radiation. In addition, the mains will also act
as a carrier for many forms of RF interference generated by electric motors, air-conditioning units, thyristor light
dimmers etc. Unless the earth system is clean, all attempts to improve hum noise levels will be futile. In extreme
cases there will be no alternative but to provide a completely separate and independent ‘technical earth’ to
replace the incoming ‘noisy earth’.
However, always consult your local electricity supply authority to ensure that safety regulations are not being
infringed.