Motorola Solutions Inc. 89FC4825 Manual De Usuario

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APPLICANT: MOTOROLA 
EQUIPMENT TYPE: ABZ89FC4825 
User / Operational Manual 
 
Functional Description / Operation of Modules (Draft) 
 
EXHIBIT D1-6 
Power Supply Module Overview 
The Power Supply is described in this section.  The information provided is sufficient to give service personnel a 
functional understanding of the module, allowing maintenance and troubleshooting to the module level.  (Refer to 
the service manual for Maintenance and Disassembly/Reassembly Procedures for detailed removal or installation 
procedures for all modules in the station.) 
The Power Supply has built in power factor correction and includes a connection for battery backup that also 
serves as the DC input when the supply is used in DC only input mode. 
The Power Supply accepts an AC or a DC input (AC input = 85 to 264 VAC, 50/60 Hz, DC input = 21.6 to 32 VDC) 
and generates three output DC voltages to power the station modules: +28.6 VDC, +14.2 VDC and +5.1 VDC. 
Note: When used in DC input mode, the 28.6 VDC output equals the DC input within 0 to -0.5 VDC. 
Note: An external 24V (nominal) battery system is required to support the battery backup feature so that when the 
AC power fails, the BR can be powered from a DC battery source if it is connected to the PS.  This results in 
uninterrupted radio service (for as long as battery power can be provided).  As the PS does not have a battery 
charging function, when the AC power is restored, an external charger is required to recharge the battery. 
The power supply is a high-frequency switched mode design, all contained in a metal heat-sink, and mounted on 
the left-hand side of the station.  The design provides for output over-voltage/overcurrent protection. 
The AC input connection is made at the rear of the station via an IEC-type connector keyed to accept only high 
temperature type mating connectors.  Also provided is a Battery Backup connection (see DC mode above).  Power 
supply cooling, when necessary, is provided by an external fan (located near the middle of the heatsink) which 
provides forced air across the power supply heatsink fins. 
The following shows the electrical performance specifications for the power supply. 
 
Power Supply Module AC Performance Specification: 
Parameter 
Value or Range
 
Input Voltage Range 
85 VAC to 264 VAC 
Input Frequency Range 
47–63 Hz 
Steady State Output Voltage 
28.6 V @ 13 A, 
14.2 V @ 8 A,  
5.1 V @ 2 A 
Output Power (Rated) 
500 W 
Output Ripple: 
+28.6 VDC 
+14.2 VDC 
+5.1 VDC 
 
50 mV p-p, @ 25°C (77°F) 
50 mV p-p, @ 25°C (77°F) 
100 mV p-p, @ 25°C (77°F) 
 
Power Supply Module DC Performance Specification: 
Parameter 
Value or Range
 
Input Voltage Range 
21.6 - 32 VDC 
Steady State Output Voltage 
28.6 V @ 13 A, Input Voltage Dependent 
14.2 V @ 8 A, Regulated 
5.1 V @ 2 A, Regulated 
Output Power (Rated) 
500 W 
Output Ripple: 
+28.6 VDC 
+14.2 VDC 
+5.1 VDC 
 
Input Voltage Dependent, 0-0.5V below input 
50 mV p-p, @ 25°C (77°F) 
100 mV p-p, @ 25°C (77°F)