UNI-T UTS3000B/A Series User Manual page 65

Avg Mode （Exponential/Repeat） : Switch between exponential and repetition average mode. When the
specified average time of sweep is reached, this average mode is used to determine the average
operation mode of the spectrum analyzer.
When the exponential average mode is selected, after a specified average time is reached, each
channel trace data is weighted exponentially, added to the previous average value and then take the
average. In the exponential average mode, the weight of the new data is larger than that of the old data,
which is conducive to track signals that change slowly. Measured average result will be displayed after
the sweeping.
When the repetition average mode is selected, after a specified average time is reached, all the previous
data will be delete and restart the sweeping.
Avg Type: Log-Pwr averaging is to average the logarithmic amplitude values (in dB) of the signal
envelope measured within a signal collection unit, the average detection type will change to video
detection. Power averaging is to average the power of the signal (the square of the amplitude),the
average detection type will change to RMS (power) detection.Voltage averaging is to average the
voltage values of the signal envelope measured in a signal collection unit, the average detection type will
changed to voltage detection, The voltage averaging is still a linear display.
Start Time: Set the left boundary of the time domain power measurement in units of time. The time
domain power measurement data are calculated from the start line to the end line. The default value is 0.
User can change the left boundary by using the numeric key, rotary knob, direction key, or touch the
panel menu.
Stop Time: Set the right boundary of the time domain power measurement in units of time. The time
domain power measurement data are calculated from the start line to the end line. The default value is 0.
User can change the left boundary by using the numeric key, rotary knob, direction key, or touch the
panel menu.
Meas Preset: Reset all parameters of the current measuring mode to factory setting.
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