User manual WAVECOM W-CODE 6.8.1

[. . . ] WAVECOM Decoder W-CODE Manual V6. 8. 1 by WAVECOM ELEKTRONIK AG PUBLISHED BY WAVECOM ELEKTRONIK AG Hammerstrasse 8 CH-8180 Buelach Switzerland Phone Fax Email: Internet: +41-44-872 70 60 +41-44-872 70 66 info@wavecom. ch http://www. wavecom. ch © by WAVECOM ELEKTRONIK AG. Reproduction in whole or in part in any form is prohibited without written consent of the copyright owner. The publication of information in this document does not imply freedom from patent or other protective rights of WAVECOM ELEKTRONIK AG or others. All brand names in this document are trademarks or registered trademarks of their owners. [. . . ] DUP-ARQ-2 allows transmission of ITA-2 (Baudot) or ITA-5 (ASCII) characters depending on the application. DUP-ARQ-2 operates at a speed of 250 Baud on the radio link. A complete transmission cycle is 176 bits (704 ms). Both stations alternate in transmitting data blocks of 64 bits each. The data format is 2 data blocks of 32 bits each. The blocks correspond to the DUP-ARQ (ARTRAC) system. Each of the two blocks contains a 5 bit checksum (inverted Hamming) for error detection and a single bit for the global parity (odd parity). Three 8 bit characters are transmitted in the data block. Two bits remain unused and are set to zero. Special blocks defining IDLE, INTERRUPT and other special functions are transmitted. For these blocks the two normally unused bits specify the particular special functions with the combinations "10" or "11". DUP-ARQ-2 has automatic channel selection facilities. Before transmission starts, the best available shortwave transmission channel is selected and its quality is continuously checked for the duration of the transmission. Within a given frequency range the system may select one of 5 possible channels which are spaced at 400 Hz intervals. Because of this channel selection mechanism the linked stations may transmit at different frequencies. DUP-FEC-2 Parameter Frequency range System Speed Modulation Receiver settings Input-Type(s) Additional Info Value HF FSK, Broadcast/Duplex FEC 125. 0 and 250. 0 Baud, variable 30-650 Baud FSK DATA, CW, LSB or USB AF, IF ITA-5 with block coding DUP-FEC-2 is a further development of the DUP-ARQ-2 system and the system characteristics are very similar. DUP-FEC-2 allows transmission of ITA-2 (Baudot) or ITA-5 (ASCII) characters. DUP-FEC-2 has a radio channel rate of 125 or 250 Baud. For error protection a five bit CRC-sum (inverted Hamming) and a single bit for global parity (odd parity) is used. DUP-FEC-2 is often used as a full duplex system. As is the case with other full duplex systems transmission simultaneously takes place on two different frequencies. If an error occurs special sequences are transmitted to signal this condition and a block repetition is requested (RQ). If errors are received the two last 32 bit blocks are retransmitted when the radio channel rate is 125 Baud and three blocks when working at 250 Baud. [. . . ] 29 B BACKGROUND 258 BandWidth - BW__ chunk 260 Bandwidth. . . 46 Bandwidth-efficient Modulation 94 Baud Rate and Spectrum Window 63 Baud Rates, Speeds and Modulation Types 95 WAVECOM Decoder W-CODE Manual V6. 8. 1 Index 291 D D16PSK 24 D8PSK 24 Data Encryption 222 Data Structures 262 dB Full Scale - dBFS chunk 260 DBPSK 23 DCS SELCAL 129 Decoder Status Bar 44 Decoding 242 Default Data and Program Folders 15 DEFINITION OF CHUNKS 259 Delete a Custom Input 41 Delivery time 279 Demodulator Menu 22 Demodulator Modes 22 Demodulator Status Bar 45 DGPS 130 DIRECT Modes 20 Disable the Firewall 245 Dispatch 279 Display of Single FSK Analysis 64 DMR (Digital Mobile Radio) 131 Double-Clicking on Status Bar Fields 45 DPSK 23 DQPSK 23 DSP 23 DTMF 23, 131 DUP-ARQ 132 DUP-ARQ-2 133 DUP-FEC-2 133 DXPSK 24 DZVEI 133 FFT and SONAGRAM 59 File Header 261 File Headers and Data Structures for Individual File Types 262 File Menu 16 First Start 12 FLEX 140 Flowchart Media Player Playback 50 Flowchart Media Player Recording 50 FM-HELL 141 FMS-BOS 141 FMS-BOS Settings 143 Font. . . 35 Formatting and Source coding 87 FSK (Frequency Shift Keying) 93 FSK ANALYSIS 62 FSK Analysis Options 64 FSK CODE CHECK 66 FSK Modes in the HF Menu 17 Fundamentals of Radio Data Transmission 86 G Gain. . . 27 General 278, 279 General Information 12 General Information about WAVECOM Products 1 Getting Started 226 Glossary of Terms 282 GMDSS/DSC-HF 143 GMDSS/DSC-VHF 144 GOLAY/GSC 144 Graphic Modes and CW in the HF Menu 19 Graphical User Interface (GUI) 15 Graphics data 264 Grounding 278 G-TOR 145 GW-FSK 146 GW-PSK 147 E Edit a Custom Input 40 EEA 134 EEE - EAS Event Codes 169 EFR 135 EIA 135 Encryption 90 Equalization 92 ERMES 136 Error Indication 30 EURO 138 H Handshake 240 HC-ARQ 147 Help Menu 43 HF Analysis 47 HF cabling 278 HF Classifier Code Check (Option) 77 HF FFT and SONAGRAM 59 HF FSK ANALYSIS 64 HF FSK CODE CHECK 66 HF MFSK CODE CHECK 75 HF PSK CODE CHECK 73 HF REAL-TIME FFT 55 HF REAL-TIME SONAGRAM 61 HF REAL-TIME WATERFALL 60 HF-ACARS 147 HF-Modes 17, 47 HNG-FEC 149 How to Configure a Firewall 245 F Fast Scan / Full Scan 67 Favorites Menu 33 FAX 94 Fax and data transmission 239 FAX Transmission Sequence 95 FAX-G3-V. 17 162 FAX-G3-V. 27ter 162 FAX-G3-V. 29 163 FAX-G3-V34hdx 163 FEC-A 139 FELDHELL 139 FELDHELL data 265 FFSK and GFSK 24 FFT / Sonagram Context Menu 45 I IAS 29 292 Index WAVECOM Decoder W-CODE Manual V6. 8. 1 IAS Bitstream Output 149 ICAO SELCAL 150 INDIRECT AM 94 INDIRECT FM 94 INDIRECT Modes in the VHF/UHF Menu 19 Inmarsat Modes in the Satellite Menu 21 Inmarsat Utilities 197 Input and interfacing 244 Input. . . 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