Bit inversion mask, Crc recognition, Crc table – Wavecom W74PC V8.7.0 User Manual

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First start

WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V8.7.0

Bit Inversion Mask

One or several data bits may be inverted by using the Bit Inversion Mask item in the Options menu.

The Bit Inversion Mask can be entered in three different ways:

 In the top input box a decimal number between 0 and 31 may be entered

 In the center input box the same number may be entered in binary format with the least signifi-

cant bit to the right

 In the bottom check boxes a logical "1" is entered with the mouse by clicking in the check box

Bit Inversion is only implemented for ITA-2 (Baudot) based bit streams.

CRC Recognition

An automatic detection of the CRC can be switched on/off with Options | CRC Recognition. The detect-
ed CRC is displayed in the decoder status bar.

CRC Table

Using Option | CRC Table a certain CRC mask can be defined.

A table of CRC's is stored in \Config\CRCTable.xml.

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