I’m using the IQmeasure API. The LP_GetScalarMeasurement function is returning a value of -99999.99. Any ideas what might be causing this?

The most common reason for this would be one of the following:

• The VSA has not captured a signal (no trigger or no signal to measure).
• The capture length is too short to run a valid analysis (increase the capture length).
• The signal is not a valid signal (perhaps it was 801.11b signal and you were trying to run 802.11ac analysis).

We suggest you perform the measurement manually with the GUI and see why the measurement is not correct.