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INSTALLATION AND OVERVIEW
GENERAL OPERATING REQUIREMENTS
ENVIRONMENTAL
Ambient temperature/Ventilation
The MRX Switching System is designed to operate as specified when the ambient temperature is kept
within the range of 0°C to 50°C. Ventilation slots are provided on the front and sides of the frames to assist
in the removal of the excess heat generated in the normal operation of the units. These ventilation slots
must not be blocked. Sigma Electronics will consider blocking of these slots, to be a custom, design
modification by the user. Custom design modifications void the Sigma Electronics warranty.
Humidity
Excessive humidity is harmful to electronic equipment. It is expected that the user will monitor and control
the relative humidity of the operating environment to maintain levels acceptable for the operation of this
equipment.
Rack-mounting
All frames and control panels are intended to be mounted in standard 19” EIA equipment racks. Prior to
installing an MRX Series frame into a rack, the front panel must be removed. To remove the front panel,
grasp the handles and pull firmly away from the frame. The front panel should completely detach from the
ballstuds.
Audio Frame placement
Due to the susceptibility of all audio circuitry to interference from power sources, the audio frame should be
located as far away from power sources as possible.
POWER
The MRX Switching System is designed to operate in all standard commercial power environments
providing input voltage between 100VAC and 240VAC ± 10%. Voltages outside of this range may or may
not be tolerated by the equipment for a period of time but will, in any case, be considered a violation of the
warranty.