User's Manual

APPLICANT: MOTOROLA SOLUTIONS EQUIPMENT TYPE: ABZ89FC5825B
109AB-5825B
User / Operational Manual
Functional Description / Operation of Modules (Draft)
EXHIBIT D1-6
Function of the Power Supply Module
The power supply, with front-to-rear air flow, operates from either an AC or DC input and provides the DC operating
voltage for the base radio. However, the power supply prioritizes an AC source (if present) over that of a DC source.
If the power supply module is used for the Power Efficiency Package, the power supply must be used in DC mode in
order to obtain the 35 W standby power consumption performance.
When operating from an AC source (90 to 264 VAC, 47-63 Hz), the supply generates two DC output voltages of 29 V
with respect to output ground. The power supply automatically adjusts to AC input ranges and supplies a steady output.
In AC mode, the power supply provides a separate battery charger which can be used to maintain the charge on a 48 VDC
nominal system, positive or negative ground, if installed. The supply generates two DC output voltages of 29 V with
reference to output ground, when operating from a DC source (43.2 VDC to 60VDC maximum, positive or negative
ground. This voltage limit includes consideration of the battery charging "float voltage" associated with the intended
supply system, regardless of the marked power rating of the equipment.
The battery charger is not usable when operating from a DC input power source. This DC source must be located in the
same building as the base radio / repeater, and it must meet the requirements of a SELV circuit.
The power supply contains several switching-type power supply circuits as follows:
• Power factor correction circuitry
• Battery charging circuitry
• Diagnostics and monitoring circuitry
The power supply controls its own continuously running fan, changing its speed to fast or slow as needed.
GTR 8000 Base Radio: If the power supply module is used for the Power Efficiency Package, the power supply fan does
not run below a 40 °C air inlet temperature in DC mode with the transmitter in a de-keyed state.
GPW 8000 Receiver: If the power supply module is used for the Power Efficiency Package, the power supply fan does
not run below a 40 °C air inlet temperature.
Power Supply Module