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4.14. Measurement results output via USB interface
4.14.1. General information
The function of measurement results output via the USB interface can be used for
receiving and processing the measurement results in the real time with third party
Software.
For activation the function, it is necessary to perform the following actions:
1) activate the option «output measurement results via USB» in the operatiтп
mode settings of the terrestrial or the satellite TV (section 4.3.2 and 4.4.2);
2) connect the device to the PC with USB cable;
3) set the virtual COM-port driver (available on request).
For transfering the data by the Analyzer, it is necessary to enter to the one of the
measurement modes that support this function (see below) and setup the measurement
parameters (set an averaging factor, select the channel, etc.).
4.14.2. Message format
The messages sent by the device are the set of the ASCII encoded text lines. Each
line begins with the 10-digits timestamp in ms, since the Analyzer is started up. The line is
ended with the sequence of symbols with 0x0D code (carriage return) and 0x0A code (line
feed).
When numerical values are displayed, the separator of the integer and fractional
parts specified in the regional settings of the device is used (section 4.10.2). After the
numerical values, the measurement unit is specified that is separated from the number by
the space symbol.
The appearance of messages not regulated by the Operating Manual is acceptable.
The example of the text messages sequence is shown below:
0006755820 LEVEL = 64.7 dBuV
0006756310 LEVEL = 64.6 dBuV
0006756820 LEVEL = 64.6 dBuV
0006757060 LOCKED (DVB-T2/32k/QAM64/PLP=0)
0006757330 LEVEL = 64.3 dBuV
0006758860 LEVEL = 64.3 dBuV
0006759130 MER = 33.9 dB
0006759240 BER0 < 1.8E-07
0006759390 LEVEL = 64.4 dBuV
0006759910 LEVEL = 64.3 dBuV
4.14.3. Messages of channel measurement results
The messages with channel measurement results are available from the following
operating modes:
1) Terrestrial or Cable TV channel measurement mode (section 4.3.3);
2) Satellite transponder parameters measurement in the Channel mode (section
4.4.3);
3) Satellite transponder parameters measurement in the MER/BER mode (section
4.4.4).
The following message types are available
8
Here and elsewhere, the symbol «_» corresponds to the space symbol, and the symbol «|» separates the possible
variants of the substrings.
8
:
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