RIGOL
© Copyright RIGOL Technologies, Inc. 2007. 2-17
User Manual for DM3000 Series
3. dB Measurement
The dB function applies to AC voltage and DC voltage measurements only.
Each dB measurement is different between the input signal and a stored relative
value, with both values converted to dBm.
Press Æ dB , enter the menu shown below:
Figure 2-16
Table 2-13 dB Measurement Function Menu Function Explanation
dB =10xLog
10
[ (Reading
2
/ R
REF
) / 0.001W ] – (dB setting value)
The relative value can take any value between 0 dBm and ±200.0 dBm.
The default relative value is 10 dBm. You can either let the instrument automatically
measure this value, or you can enter a specified value.
Function Menu Explanation
Default Use the default value.
Save all changes, back to a higher level menu.
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