UNI-T UTS3000B/A Series User Manual page 72

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.
Carrier BW: Set the bandwidth of the carrier to be measured. The carrier bandwidth is linked with sweep
width, noise bandwidth and frequency offset. User can change the carrier bandwidth by using the
numeric key, rotary knob, direction key, or touch the panel menu.
Noise BW: Set the bandwidth of the noise to be measured. The noise bandwidth is linked with sweep
width, noise bandwidth and frequency offset. User can change the noise bandwidth by using the numeric
key, rotary knob, direction key, or touch the panel menu.
Offset Freq: Set the difference between the center frequency of carrier and the noise. The frequency
offset is linked with the sweep, carrier bandwidth and noise bandwidth. Users can change the frequency
offset 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.
Harmonics
5-8 Harmonic Measurement
Figure
Harmonic Measurement: The amplitude of each sub-harmonic and the total harmonic distortion of the
carrier signal, which can be measured up to 10 harmonics.
THD is the total harmonic distortion.
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