Modulation Analysis (Demod Mode)
WCA230A & WCA280A User Manual
3- 63
Figure 3--51 illustrates the measurement items with a typical RFID waveform.
The analyses are performed on the carrier in the Carrier, Spurious, and ACPR
measurements, on the transmission power on/down in the Power On/Down
measurement, and on the Interrogator-to-Tag or Tag-to-Interrogator signaling in
the RF Envelope, Constellation, Eye Diagram, and Symbol Table measurements.
Use the following procedure to perform the RFID analysis.
NOTE
. If you use a signal input
(
INPUT
→
Signal Input Port...
)
other than RF,
the measurements are not guaranteed.
For Option 02 (256 MB memory), the acquisition length
(
TIMING
→
Acquisi-
tion Length
)
and the analysis length
(
TIMING
→
Analysis Length
)
are both
up to 1.28 s at the maximum real-time span (15 MHz). The length of a burst is up
to 40 ms. A burst more than 40 ms is analyzed every 40 ms as one burst each.
The time length varies according to span settings.
1.
Press the
DEMOD
key on the front panel.
2.
Select
Standard...
→
RFID
using the side keys.
3.
Select a measurement item by pressing the side key.
For example, press the
Carrier
side key to perform the carrier measurement.
4.
Adjust the amplitude and frequency to display the measurement waveform.
Refer to page 3--119 for setting frequency and span.
Refer to page 3--127 for setting amplitude.
5.
Set the analysis range in the overview.
(This is not necessary in the spurious and ACPR measurements.)
Refer to page 3--30 for details of the analysis range settings.
If you use the zoom function, do these steps:
H
Press the VIEW:
DEFINE
key.
H
Press the
Overview Content...
side key and select
Zoom
.
Refer to
Zoom Function
on page 3--24 for setting the analysis area on the
spectrogram with the zoom function.
6.
Press the
MEAS SETUP
key and set the measurement parameters.
Refer to
Meas Setup Menu
in each measurement description.
7.
Press the
Analyze
side key and carry out the analysis.
(It is not necessary in the spurious and ACPR measurements.)
Basic Procedure
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...
Page 448: ......