Wavecom W40PC, Manual

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WAVECOM Decoders v6.15 W40PC, W41PC, W51PC Advanced Topics
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If a mode is uniquely identified, the software will switch to the identified mode and decoding
is initiated with the measured values of mode, baud rate, shift and center frequency.
If two or more different systems are identified or if more than five proven transmission errors
occur an automatic switch to a mode will not take place. In the current versions, no text is
displayed in the Data field in the mode table.
After starting the " FSK Code Check " the shift frequency, center frequency and the baud rate
are determined. These values are displayed in the appropriate fields after the measurement has
taken place.
The software then proceeds with code and system analysis. The incoming bit stream is tested
against known modes. For some modes using a high interleaving depth (e.g. RUM-FEC) large
quantities of input data are required. These modes therefore require longer to test and are tested
last.
The name of each identified system is displayed in the output window. The decoded text is
simultaneously displayed in upper and lower case in two lines. An identified system may be
started immediately by double-clicking
the system in the output window. (e.g. double-
clicking ARQ-E in the above figure will interrupt FSK Code Check and start the system
immediately).
The Hits-Checks will show you how often during checking a mode was successful. If you
see multiple modes on the screen, then this will give you an indication which mode you have
to try.
Some modes are very difficult to distinguish, especially when the system is in IDLE mode. The
decoded text including text representations of the special characters IDLE ALFA, IDLE BETA