Rigol DM3062 Guía de usuario Pagina 67

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RIGOL
©Copyright RIGOL Technologies, Inc. 2007.
User’s Guide for DM3000 Series
2-17
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
Function
Menu
Explanation
Default Use the default value.
Save all changes, back to a higher level menu.
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.
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