User's Manual
Table Of Contents
- 1 REGULATORY AND SAFETY INFORMATION
- 2 PREFACE
- 3 SPECIFICATIONS
- 4 GENERAL INFORMATION
- 5 OPERATION
- 5.1 CONVENTIONAL STATION CONFIGURATIONS
- 5.2 ENCRYPTED STATION CONFIGURATIONS
- 5.3 MODES OF OPERATION
- 5.4 ENCRYPTION FORMATS
- 5.5 P25 CONVENTIONAL CONFIGURATIONS
- 5.6 PROGRAMMABLE FEATURES FOR CONVENTIONAL STATIONS
- 5.6.1 Conventional Stations (Setup)
- 5.6.2 Main Station Data
- 5.6.3 Push-to-Talk Options
- 5.6.4 Other Potentiometer Settings
- 5.6.5 Carrier Control Timer
- 5.6.6 Squelch Tail Elimination
- 5.6.7 Drop Out Delay Timer
- 5.6.8 Control Shelf Options
- 5.6.9 Station Remote Control
- 5.6.10 Auxiliary Control Relay
- 5.6.11 Squelch Operated Relay
- 5.6.12 Channel Guard Monitor
- 5.6.13 System Module - Digital Signal Processing
- 6 MASTR III ADC STATION DESCRIPTION
MM102558V1 R1A
6.2 STATION EQUIPMENT
6.2.1 Station Power Supply
The MASTR III ADC station is available with either of two models switching power supply. The
PS103010 (120 VAC input), shown in
Figure 6-12, and the PS24043-0001 (240 VAC input), shown in
Figure 6-13, are Multi-Output; AC to DC Switching Power Supplies housed in a metal chassis with built-
in dual cooling fans. The supplies replace the previous model 19A149979 series 120V and 240V power
supplies.
Both the PS103010 and PS24043-0001 switching power supplies are 600 Watt continuous duty power
supply with two independent voltage outputs for full station operation, and includes a built-in battery
back-up system. A 27.2 VDC output at 15 Amperes provides power to the RF Power Amplifier while a
13.6 VDC output at 6 Amperes provides power to the MASTR III ADC system (T/R) shelf. The battery
back-up circuit includes a built-in battery charging circuit to maintain maximum battery performance.
The supply incorporates features for over-voltage and over-current protection, 24V status signaling, and a
forced-air cooling system for optimal system performance.
Figure 6-12: 120 VAC Switching Power Supply
Figure 6-13: 240 VAC Switching Power Supply
6.2.2 DC Power Distribution Panel
A DC Power Distribution panel is available for the MASTR III ADC station. This DC panel provides a
high current 24 VDC input connection, and a low current 12 VDC input connection from external DC
power sources. The panel includes safety fuses for each power source and the necessary distribution
points to power station equipment.
6.2.3 RF Power Amplifier Assembly
The RF Power Amplifier (PA) Assembly EA101292, shown in Figure 6-14, amplifies the exciter output
to rated output power level. This module contains a power module, amplifier drivers and power control
circuitry required for power amplification.
The Power Amplifier Assembly is a continuous duty, solid state, wide-band RF power amplifier. Its main
function is to amplify the 10 mW FM signal from the Transmitter Synthesizer to the rated RF output at
the antenna port. The output of the Power Amplifier Assembly is typically 110 Watts for VHF
(adjustable from 10 to 110 Watts) and 100 Watts for UHF and 800 MHz (adjustable from 10 to 100
Watts) as measured at the PA output port.
48