User manual WAVECOM W61PC-LAN 6.8.1

[. . . ] WAVECOM Decoder W61PC/LAN 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. [. . . ] 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. Like DUP-ARQ-2, DUP-FEC-2 has many special blocks for IDLE and RQ. DZVEI WAVECOM Decoder W61PC/LAN Manual V6. 8. 1 Transmission Modes 137 Parameter Frequency range System Modulation Receiver settings Input-Type(s) Value VHF/UHF Analog Selcal INDIRECT-FM FM, BW=12 kHz AF, (IF) The entire call number is transmitted by consecutive tones in decade sequence. When two identical digits are to be transmitted consecutively, then an eleventh frequency is used as a repetition identifier. If more than two identical digits are to be transmitted, the repetition tone is appended to the digit tone (e. g. 22222 is transmitted as f2 fw f2 fw f2, where f2 is the tone for "2" and fw is the repetition tone). [. . . ] 44 B BACKGROUND 261 BandWidth - BW__ chunk 263 Bandwidth. . . 54 Bandwidth-efficient Modulation 98 WAVECOM Decoder W61PC/LAN Manual V6. 8. 1 Index 297 CV-786 132 CW 30 CW-MORSE 132 Cycle. . . 36 D D16PSK 31 D8PSK 31 Data Encryption 225 Data Structures 265 dB Full Scale - dBFS chunk 263 DBPSK 30 DCS SELCAL 133 Declaration of Conformity 284 Decoder Status Bar 53 Decoding 245 Default Data and Program Folders 22 DEFINITION OF CHUNKS 262 Delete a Custom Input 49 Delivery time 282 Demodulator Menu 29 Demodulator Modes 29 Demodulator Status Bar 53 DGPS 134 DIRECT Modes 27 Disable the Firewall 248 Dispatch 282 Display of Single FSK Analysis 68 DMR (Digital Mobile Radio) 135 Double-Clicking on Status Bar Fields 53 DPSK 30 DQPSK 30 DSP 30 DTMF 30, 135 DUP-ARQ 136 DUP-ARQ-2 137 DUP-FEC-2 137 DXPSK 31 DZVEI 137 FAX Transmission Sequence 99 FAX-G3-V. 17 166 FAX-G3-V. 27ter 166 FAX-G3-V. 29 167 FAX-G3-V34hdx 167 FEC-A 143 FELDHELL 143 FELDHELL data 268 FFSK and GFSK 31 FFT / Sonagram Context Menu 53 FFT and SONAGRAM 63 File Header 264 File Headers and Data Structures for Individual File Types 265 File Menu 23 First Start 19 FLEX 144 FM-HELL 145 FMS-BOS 145 FMS-BOS Settings 147 Font. . . 41 Formatting and Source coding 91 FSK (Frequency Shift Keying) 97 FSK ANALYSIS 66 FSK Analysis Options 68 FSK CODE CHECK 70 FSK Modes in the HF Menu 24 Fundamentals of Radio Data Transmission 90 G Gain. . . [. . . ]