
RIGOL
©Copyright RIGOL Technologies, Inc. 2007.
User’s Guide for DM3000 Series
2-18
4. dBm Measurement
This function applies to AC voltage and DC voltage measurements only.
The dBm function is logarithmic, and is based on a calculation of power delivered to
a reference resistance, relative to 1 milliwatt.
Press Æ dBm, enter the menu shown below:
Figure 2-17
Table 2-14 dB Measurement Function Menu Function Explanation
Function
Menu
Explanation
Default Use the default value.
Save all changes, back to a higher level menu.
The computation method of the dBm:
dBm = 10 x Log
10
[ (Reading
2
/ R
REF
) / 0.001W ]
R
REF
expressed measuring the resistance value in the actual electric circuit.
Comentarios a estos manuales