niWLANA Get Current Iteration OFDM Demod Preamble Frequency Error Trace (VI)
- Updated2023-02-21
- 3 minute(s) read
Returns the preamble frequency error trace for signals containing an OFDM payload. Preamble frequency error computes the variations, across time, of the frequency error over the short training field (STF) and long training field (LTF) symbols.
To use this VI, you must set the OFDM Demod Enabled property to True and you must set either the OFDM All Traces Enabled property or the OFDM Preamble Frequency Error Trace Enabled property to True.
 |
niwlan analysis session specifies the niWLAN analysis session refnum. |
||||
 |
active channel specifies the active channel string. |
||||
 |
error in describes error conditions that occur before this node runs. This input provides standard error in functionality. |
||||
 |
niwlan analysis session out passes a reference from the niWLAN analysis session to the next VI.
|
||||
 |
preamble frequency error trace returns the preamble frequency error.
|
||||
 |
error out contains error information. This output provides standard error out functionality. |
Details
You must use the following active channel string formats to query this VI.
| Standard Property Value | Active Channel String Syntax |
|---|---|
| 80211A/G OFDM, 80211J OFDM, 80211P OFDM, 80211G DSSSOFDM | "" (empty string) |
| 80211N MIMOOFDM, 80211AH MIMOOFDM | "channelx" |
| 80211AC MIMOOFDM, 80211AF MIMOOFDM, 80211AX MIMOOFDM | "[segmentx/]channely" ("segment0/" is optional if the Number of Segments property is set to 1) |