Wavecom PXGF streaming format (GEW) V1.24 - Manual (Page 12)

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GSY-0D8-SE RESTRICTED Interface Requirement Specification for PXGF Streaming and File Format
3.4.3 Sample Rate – SR__ chunk
Element Type Description
lSampleRate_uHz int64 The number of samples per second that are being
recorded by this channel
Table 3.4: The SR__ chunk
3.4.4 BandWidth – BW__ chunk
The bandwidth centred about the centre frequency. If the bandwidth is not centred about the centre
frequency use the BWOF chunk instead.
Element Type Description
lBandwidth_uHz int64 The bandwidth of the signal in micro Hertz
Table 3.5: The BW__ chunk
3.4.5 BandWidth Offset Frequency – BWOF chunk
In some cases the signal bandwidth will not be centred about the centre frequency. Such cases may
occur when demodulating SSB signals.
Element Type Description
lBandwidth_uHz int64 The bandwidth of the signal in micro Hertz
lOffsetFrequency _uHz int64 The offset frequency of the signal band from the centre
frequency in micro Hertz
Table 3.6: The BWOF chunk
3.4.6 Centre Frequency – CF__ chunk
Element Type Description
lCentreFrequency_uHz int64 The centre frequency of the signal in micro Hertz
Table 3.7: The CF__ chunk
3.4.7 dB Full Scale – dBFS chunk
Element Type Description
fFullScaleLevel_dBm float32 The analogue input level to the ADC in dBm, which will
produce maximum full scale digital samples for the
current IQ time data chunk integer type. eg. If we are
using SSIQ chunks, then a dBFS chunk will indicate
the analogue input level that will yield a maximum
digital sample swing of +-(2
15 -1). Note that this value
may be different from the full scale value of the ADC.
Table 3.8: The dBFS chunk
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2009-01-13 RESTRICTED Page 11
Issue 1.24