UNI-T UTS3000B/A Series User Manual page 29

Figure 3-8: Fail to Distinguish Small Signal from Big Signal
5. Reduce the resolution bandwidth to check the hidden small signal:
Press [BW]>3 kHz
Press [Peak]
Press [Marker]>Marker Mode>Delta △
Press [Marker]>Marker Frequency>10 kHz
Figure 3-9: Distinguish Small Signal from Big Signal
Note
UTS3000B/A's filter has 4:8:1 shape factor. With a resolution bandwidth of 3 kHz, its 60dB
bandwidth is 14.4 kHz. Half of this bandwidth (7.2 kHz) is narrow than the freq uency
difference of two signals (10 kHz), so the two input signals can be distinguished.
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