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conditions. Additional ventilation is not required and the installation is not
critical as far as the airflow is concerned.
Connectors
All connectors are mounted on the rear panel of the device. The mains
connector is a standard Euro outlet with build in mains fuses and
interference trap. The output is a 26 pins ‘Siemens’ type female multipin
connector. The device has two inputs for the two power supply units
UPS1000, UPS10 or UPS25 respectively. The input connectors are 26
pin ‘Siemens’ type male multipin connectors. Two cables to connect the
power supplies 1 and 2 to the cross over unit belong to the console’s
accessories kit. The standard length of these cables is 2 m. Longer cables
are available.
Mains Voltage
Since the diode matrix is passive, mains supply is only required for the
alert system. The power consumption of all versions is only 30 VA. The
mains transformer can be used with 230 V and 115 V. Solder bridges
inside the unit determine the mains voltage.
Alert System
The failure alert system controls if all output voltages of both attached
power supply units have a sufficient output voltage. LED’s on the face
plate of the cross over unit indicate the output voltages. A minimum
voltage can be adjusted for each voltage independently, using internal trim
pots. If at least one output voltage drops below the minimum voltage, an
alert LED displays failure condition. In addition, a beeper is activated. The
beeper can be switched off on the face plate of the remot control device
and with a switch on the face plate of the crossover unit.
Alert Remote
Panel
A Remote Panel that contains the 2 failure alert lamps, an alert beeper and
a switch to disable the beeper but not the lamps is available. This panel
can be installed in the meter bridge of the console to ensure permanent
control of the power supply section if the power supply units are installed
in a separate room. An additional control cable is needed for this remote
section.
1.4 The Mains Power Supply of Audio Systems
ONLY QUALIFIED PERSONNEL SHOULD BE ALLOWED TO INSTALL
AND/OR MODIFY HAZARDOUS VOLTAGE, ELECTRICAL SYSTEMS.
THE ExAMPLES WE GIVE ARE VERY GENERAL AND ARE TO BE
TAKEN AS SUCH; IN ADDITION, SOME DETAILS MAY NOT APPLY IN
YOUR LOCAL AREA BECAUSE OF SPECIFIC LOCAL LAWS AND/OR
REGULATIONS.
WE ADVISES THAT YOU CONSULT A QUALIFIED ELECTRICIAN
REGARDING THE INSTALLATION OF ANY NEW ELECTRICAL
SUPPLY, OR THE MODIFICATION OF AN ExISTING SUPPLY. BY NO
MEANS, WILL WE BE LIABLE FOR ANYTHING THAT YOU DO.
As far as the mains power supply of a professional audio system
is concerned, it is possible to avoid many problems from the very
beginning by correctly installing the studio system. Besides click
noise by other electrical devices and other problems due to mutual
interacting of two devices that share the same power supply, the
grounding of the audio system is unavoidable connected to the
power supply. A correct grounding of the entire system can only be
accomplished if the safety grounding that is used at the location is
properly integrated to cover all considerations. If this is neglected,
the final installation will never be problem free
.
Power supply wiring
The best base for an appropriate installation of the studio is a separate
three phase current line that is used only for the studio. This line should
come directly from the main ground node of the building and it should
have an appropriate cross-section of 4 x 10mm2
or higher. The line should
be available in a distribution box in the studio. This principle avoids any
kind of interference from other electric devices that share the same
power and ground which might cause interference in the system. Typical
examples for such devices are refrigerators, electric heater systems or
coffee machines with poor suppression filters that can infiltrate click noise
or Xerox machines that use switched mode heat regulators that scatter
