File Format
WCA230A & WCA280A User Manual
3- 257
A frame contains 1024 pairs of I and Q data in the time domain in order of data
acquisition.
Definition of Bin.
The bin is defined by the following structure:
struct iqBin_st {
short q;
short i;
};
Definition of Frame.
The frame is defined by the following structure:
struct iqFrame1024_st {
struct iqBin_st iq[1024];
};
All the data of amplitude, phase, I and Q are transformed to 2-byte signed
integers, and then written in the file.
Amplitude.
The amplitude is calculated using i and q in the IQT file using these
formulas:
i = i -- IOffset
q = q -- QOffset
Amplitude = 10 * ln(i * i + q * q) / ln(10)
+ Gain MaxInpu LevelOffset [dBm]
Phase.
The phase is calculated using i and q in the IQT file using these formulas:
i = i -- IOffset
q = q -- QOffset
Phase = atan2(q, i) * (180 / Pi) [degree]
I, Q.
I and Q are calculated using i and q in the IQT file using these formulas.
i = i -- IOffset
q = q -- QOffset
IQScale = Sqrt(Power(10, (Gain MaxInputLevel
+ LevelOffset) / 10) / 20 * 2)
I = i * IQScale [V]
Q = q * IQScale [V]
Frame Data
Calculation of Data
Summary of Contents for WCA200A
Page 6: ......
Page 8: ......
Page 29: ...Getting Started...
Page 30: ......
Page 57: ...Operating Basics...
Page 58: ......
Page 86: ...Functional Overview 2 28 WCA230A WCA280A User Manual...
Page 125: ...Reference...
Page 126: ......
Page 208: ...Modulation Analysis Demod Mode 3 82 WCA230A WCA280A User Manual...
Page 272: ...Setting Timing Parameters 3 146 WCA230A WCA280A User Manual...
Page 346: ...Display Line 3 220 WCA230A WCA280A User Manual...
Page 358: ...Marker Operation and Peak Search 3 232 WCA230A WCA280A User Manual...
Page 388: ...File Format 3 262 WCA230A WCA280A User Manual...
Page 392: ...Screen Copy 3 266 WCA230A WCA280A User Manual...
Page 393: ...Appendices...
Page 394: ......
Page 430: ...Appendix C Digital Demodulation Symbol Mapping C 4 WCA230A WCA280A User Manual...
Page 437: ...Glossary...
Page 438: ......
Page 446: ...Glossary Glossary 8 WCA230A WCA280A User Manual...
Page 447: ...Index...
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