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Table Of Contents
1 INTRODUCTION ..............................................4
2 CONNECTIONS & INDICATIONS .................................5
2.1 RS232 Connector .......................................5
2.2 Power Connector ........................................6
2.3 RF Connector ...........................................6
2.4 Front Panel Indications ...................................6
3 MODEM OPERATION ..........................................7
3.1 Introduction ............................................7
3.2 Handshaking Operation During Transmit and Receive .........7
3.3 Data Transfer Modes .....................................8
3.4 RS232 Data Handling ....................................8
3.5 Receive-to-Transmit Turnround ............................8
4 LIST OF COMMANDS: ........................................10
4.1 Command Mode ........................................10
4.1.1 Activation of the Command Mode: .....................10
4.1.2 Ending of Command Mode ..........................11
4.2 Command Syntax ......................................11
4.3 Baud Rate (AT B0) ......................................12
4.4 Parity (ATB1) ..........................................12
4.5 Format Mode (AT F) .....................................13
4.6 Engineering Test Modes (AT In) ...........................14
4.7 Software Version Information (AT I9) .......................15
4.8 Command Mode Guard Time (AT S154) .....................15
4.9 Centre Radio Frequency (AT S155) ........................15
4.10 Received Signal Strength Indication (RSSI) (AT S156) ........16
4.11 Radio Channel (AT S157) ................................17
4.12 Data Quality (AT S158) ..................................17
4.13 Squelch (AT S159) ......................................18
4.14 Transmission Power (AT S160) ...........................19
4.15 Channel Step Size (AT S161) .............................20
4.16 Test Message Period (AT S162) ...........................20
4.17 Over-Air Symbol Rate (AT S163) ..........................21
4.18 Preamble Period (AT S165) ...............................21
4.19 Frame Synch Tolerance (AT S166) .........................22
4.20 Invert Symbol (AT S167) .................................22
4.21 Squelch Delay (AT S168) .................................23
4.22 Enable/Disable Receive Output Data (AT &D) ...............23
4.23 Enable/Disable Input Echo Data (AT &E) ...................23
4.24 Radio Frequency (AT &F) ................................24
4.25 Save parameters (AT &W) ................................24
4.26 Restore defaults (AT &Y8) ...............................24
4.27 Display parameters (ATT?) ...............................25
4.28 Code Loader (AT S2000) .................................26