Ingenieurbüro Mulka
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– Ingenieurbüro Mulka
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5.2.6 Option DABXP-OPR
– PRBS-Analyser
Measuring of the true bit error rates plays an important role in compliance tests of DAB
transmitters (ETSI EN 302 077) and of DAB receivers (EN 50248). The PRBS-Analyser in
conjunction with DAB-XPlorer hardware, DABRF and UEB400DXP was made for such
measuring and makes costly measuring devices obsolete.
The PRBS-Analyser detects sub-channels that contain one of several pre-defined pseudo-
random binary sequences (PRBS). Then the tool measures the true bit error rate within these
sub-channels and displays the measuring result with a delay of less than one second.
Additionally, the software displays the position of the bit errors within the frame and the
(pseudo) bit error rate provided by the DAB receiver.
You can save the results of the measuring into an XML file. This file contains the positions of
detected bit errors as bit mask and a summary of the resulting bit rates and error rates at the
end of the file. Developers can gain valuable hints about the signal processing and regulation
behaviour of their transmitter or receiver units from this XML file.
Figure 23
– PRBS-Analyser window
