Service manual

2-4 Installation: Pre-Installation Considerations
2.1.4 AC Input Power Requirements
The base station/repeater is equipped with a switching power supply, this assembly operates from
85 VAC to 264 VAC at 47 to 63 Hz AC input power. A standard 3-prong line cord is supplied to
connect the power supply to the AC source.
It is recommended that a standard 3-wire grounded electrical outlet be used as the AC source.
The outlet must be connected to an AC source capable of supplying a maximum of 1020 VAC. For a
nominal 110/120 VAC input, the AC source must supply 8.5 A and should be protected by a circuit
breaker rated at 15 A. For a nominal 220/240 VAC input, the AC source must supply 4.25 A and
should be protected by a circuit breaker rated at 10 A.
• Requirement for European Union (EU) Countries
Beginning January 1, 2001, input harmonic current specifications were changed for most
electronic telecommunication equipment installed in EU countries. Accordingly, power factor
correction is necessary for MTR3000 base stations/repeaters.
Power Supply model DLN6707 has internal power factor correction.
2.1.5 DC Input Power Requirements
The DC source operates from 21.6 VDC to 32 VDC. This DC source must be located in the same
building as the base station/repeater, and it must meet the requirements of a SELV circuit.
The Power Supply module in the base station/repeater provides DC power to the Receiver, Exciter,
SCM and Power Amplifier module via one or more of the three DC output taps; 28.6 VDC, 14.2 VDC
and 5.1 VDC by using a DC Input cable.
2.1.6 Equipment Mounting Methods
The base station/repeater equipment can be mounted in a rack or cabinet.
The base station/repeater can be mounted:
• in a floor-mount indoor cabinet. Each floor-mount cabinet has front and rear vented doors and
has the capacity to hold a minimum of a single base station/repeater (see thermal limitations
described under Equipment Ventilation), and required ancillary equipment. The larger cabinets
provide additional room for supplementary peripheral equipment.
• in a rack. Open frame racks accept multiple base stations/repeaters and ancillary equipment;
EIA 48.3 cm (19 in) rack configuration.
The AC socket-outlet must be installed near the equipment and must be easily
accessible.
C a u t i o n