User's Manual

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Table Of Contents

Foreword
- General Safety Precautions
- Computer Software Copyrights
- Document Copyrights
- Disclaimer
- Trademarks
General Safety and Installation  Standards and Guidelines
MOTOTRBO SLR 5000 Series Repeater  Supplemental Safety and Installation Requirements
Environmental Information
- Material Content
- Disposal of your Electronic and Electric Equipment
- Disposal Guideline
Document History
Contents
List of Figures
List of Tables
List of Procedures
Related Publications
Summary of Bands Available
Commercial Warranty
- Limited Warranty
SLR 5000 Series Repeater
- 1.1 Notations Used in This Manual
- 1.2 Description
- 1.3 Operating Features
- 1.4 Frequency Ranges and Power Levels
- 1.5 Specifications
- 1.6 Theory of Operation
- 1.7 Basic Repeater Level Troubleshooting – RDAC and LEDs
- 1.8 Repeater Model Numbering Scheme
- 1.9 Model Chart
SLR 5000 Series Satellite Receiver
- 2.1 Description
- 2.2 Operating Features
- 2.3 Frequency Ranges
- 2.4 Specifications
- 2.5 Configuration
- 2.6 Basic Station Level Troubleshooting – RDAC and LEDs
- 2.7 Model Chart
SLR 5000 Series Modem
- 3.1 Description
- 3.2 Receiver Subsystem
  - 3.2.1 Specifications
- 3.3 Transmitter Exciter Subsystem
  - 3.3.1 Specifications
- 3.4 Station Control Subsystem
  - 3.4.1 High Stability Reference Block
  - 3.4.2 Audio
- 3.5 Station Control Interface
SLR 5000 Series Power Amplifier
- 4.1 Description
  - 4.1.1 General Description
- 4.2 Input and Output Connections
- 4.3 Frequency Ranges
- 4.4 Specifications
- 4.5 Modem Interface
SLR 5000 Series Power Supply
- 5.1 Description
  - 5.1.1 General Description
- 5.2 Specifications
- 5.3 Power Supply Interface
SLR 5000 Series Front Panel
- 6.1 Description
  - 6.1.1 General Description
- 6.2 Input and Output Connections
- 6.3 Interfaces
  - 6.3.1 Modem Interface
  - 6.3.2 User/Service Interface
    - 6.3.2.1 USB
    - 6.3.2.2 LED Indicators
SLR 5000 Series Back Panel
- 7.1 Description
  - 7.1.1 General Description
- 7.2 Back panel Interfaces
SLR 5000 Series Test Equipment And Service Aids
- 8.1 Recommended Test Equipment
- 8.2 Service Aids
SLR 5000 Series Performance Check or Testing
- 9.1 General
- 9.2 Transmitter Testing
- 9.3 Receiver Testing
- 9.4 Auto Test and Tune Support
SLR 5000 Series Programming and Tuning
- 10.1 Introduction
- 10.2 Customer Programming Software Setup
- 10.3 Reference Oscillator Alignment
  - 10.3.1 Tuning the Reference Oscillator Alignment
- 10.4 Repeater Tuning Setup
- 10.5 Rx Audio Level Set
  - 10.5.1 Tuning the Rx Audio Level Set
- 10.6 Tx Audio Level Set
  - 10.6.1 Tuning the Tx Audio Level Set
- 10.7 Modulation Limit Alignment
- 10.8 Changing to Battery Charger Only Mode
SLR 5000 Series Maintenance and Disassembly/Reassembly
- 11.1 Introduction
- 11.2 Routine Maintenance
- 11.3 Preventive Maintenance
  - 11.3.1 Inspection
  - 11.3.2 Cleaning Procedures
- 11.4 Safe Handling of CMOS and LDMOS Devices
- 11.5 Disassembly
  - 11.5.1 Disassembly – General
  - 11.5.2 Disassembly – Detailed
- 11.6 Assembly and Reassembly
  - 11.6.1 Assembly – Detailed
    - 11.6.1.1 Back Panel Installation

3.4

Station Control Subsystem

The Station Control Subsystem is described in this section. A general description, identification of

controls, indicators, and inputs/outputs, a functional block diagram, and functional theory of operation

are provided.

The Controller circuitry performs the digital signal processing, data formatting and audio routing for the

station and provides the external interfaces to the rest of the site.

The Controller section consists of 7 main ICs. These are:

• Texas Instrument DM8148 Host/DSP Processor

• EMMC Flash memory

• DDR3 memory

• Texas Instruments Power Management IC

• NOR Flash

• 2-TI AIC3204 Codecs

General controller functionality includes:

• Data and Control interface to the transceiver ICs

• Audio interface with CODEC ICs

• UART interface to expansion board

• Intermodule communication (SPI, I2C)

• Two Ethernet ports

• USB Device port

• USB Host port

• External physical interfaces (connectors, LEDs, external references etc.)

• Station Reference Control

3.4.1

High Stability Reference Block

The high-stability reference block can be used to enhance the 0.5 ppm Voltage Controlled

Temperature Compensated Crystal Oscillator. The block diagram shown in Figure 9: High Stability

Reference Circuit on page 55. An external reference can be applied to lock the on board VCTCXO.

This function can be enabled via the customer programming software. The connection is made through

a cable connecting a BNC connector on the rear panel to a connector on the modem module. The

location of the connector on the modem module can be found in Figure 8: Modem Module Connector

Locations on page 52.

Figure 9: High Stability Reference Circuit

19.2MHz

VCTCXO

DAC Output

from

Transceiver IC

PLL

Ref_Lck_Det

Lock

Detect

Tune

STD_EN

VCTCXO

LOOP

FILTER

Phase

Detector

Loop Divider

SPI

External

Reference

3.4.2

Audio

The analog audio stages are used exclusively for external accessories connected through the rear

DB25 accessory connector.

MN001436A01-AD

Chapter 3: SLR 5000 Series Modem

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