Raw Main Time (Custom IQ)

Menu Path: Trace > Data > Channel x > Raw Main Time

Raw Main Time is the raw data read from the input hardware or playback file. It is similar to Time data with the following exceptions:

• This data has not had time corrections applied, so it displays a "CAL?" trace LED.
• The data has not gone through the VSA's software resampling filters, so is generally not sampled at the specified sample rate.
• The data has a wider bandwidth than the measurement span would indicate.

Raw Main Time data is useful in the following situations:

• When Channel, IF Magnitude, or Magnitude trigger types are used, the input hardware detects the trigger, so Raw Main Time sometimes gives a better indication of what caused the trigger.
• When a recording is played back, the Raw Main Time measurement data helps to see exactly the samples that are saved in the recording, with no filtering applied or settling removed.