User Manual

ManualsBrandsMicrohard Systems ManualsElectronics900 MHz Spread Spectrum Module

iii CompactRF

Operating Manual

Contents

1. Introduction

1.0 Product Overview .............................................................................................................................................................................. 1

1.1 Features.............................................................................................................................................................................................. 1

1.2 About this Manual ............................................................................................................................................................................. 2

1.3 Unpacking and Inspection ................................................................................................................................................................. 3

2. Electrical/Physical

2.0 Functional Block Diagram................................................................................................................................................................. 5

2.1 Pinout................................................................................................................................................................................................. 6

2.2 DC Characteristics............................................................................................................................................................................. 8

2.3 AC Characteristics.............................................................................................................................................................................. 9

3. Mode of Operation

3.1 Data Mode ....................................................................................................................................................................................... 11

3.2 Command Mode .............................................................................................................................................................................. 12

3.2.1 Menu Interface......................................................................................................................................................................... 13

3.2.2 AT Command Interface........................................................................................................................................................... 13

3.3 Switching Between Command and Data Modes.............................................................................................................................. 14

3.3.1 Switching Between AT Command Interface and Data Mode................................................................................................... 14

3.3.2 Switching Menu Interface and Data Mode.............................................................................................................................. 15

3.4 Sleep Mode...................................................................................................................................................................................... 15

4. Configuration

4.1 Quick Start Approach ...................................................................................................................................................................... 17

4.2 AT Commands................................................................................................................................................................................. 18

4.3 AT Registers .................................................................................................................................................................................... 21

4.4 Configuration Settings..................................................................................................................................................................... 22

S Register 101 - Operating Mode..................................................................................................................................................... 23

S Register 102 - Serial Baud Rate.................................................................................................................................................... 25

S Register 104 - Network Address................................................................................................................................................... 26

S Register 105 - Unit Address.......................................................................................................................................................... 26

S Registers 106 and 206 - Primary and Secondary Hopping Patterns.............................................................................................. 26

S Register 107 - Encryption Key...................................................................................................................................................... 28

S Register 108 - Output Power Level............................................................................................................................................... 28

S Register 109 - Hopping Interval.................................................................................................................................................... 29

S Register 110 - Data Format............................................................................................................................................................ 29

S Registers 111 and 112 - Packet Minimum and Maximum Size..................................................................................................... 30

S Register 116 - Packet Character Timeout ...................................................................................................................................... 30

S Registers 113 and 213 - Packet Retransmission/Packet Retry Limit ............................................................................................. 31

S Register 115 - Packet Repeat Interval........................................................................................................................................... 31

S Register 122 - Link Handshaking.................................................................................................................................................. 32

S Register 117 - Modbus Mode ........................................................................................................................................................ 32

S Register 120 and 121- RTS/DCD Framing/Timeout ..................................................................................................................... 33

S Register 123 - RSSI Reading......................................................................................................................................................... 33

5. Installation

5.1 Estimating the Gain Margin............................................................................................................................................................. 35

5.2 Antennas and Cabling...................................................................................................................................................................... 37

5.2.1 Internal Cabling ....................................................................................................................................................................... 37

5.2.2 Installing External Cables, Antennas and Lightning Arrestors................................................................................................ 38

A. Modem Command Summary...................................................................................................................................................................... 41

B. Serial Interface............................................................................................................................................................................................ 43

C. Factory Default Settings.............................................................................................................................................................................. 45

D Performance Tables...................................................................................................................................................................................... 47

E. Hopping Tables............................................................................................................................................................................................ 49

F. Technical Specifications............................................................................................................................................................................. 51

G. Development Board Schematics ................................................................................................................................................................. 53

H. Mechanical Drawing................................................................................................................................................................................... 59

I. Glossary ...................................................................................................................................................................................................... 61