Editing Dbm Measurement - Keysight 34450A Guia Del Usuario

Editing dBm measurement

The logarithmic dBm (decibels relative to one milliwatt) scale is often used in RF
signal measurements. The multimeter's dBm operation takes a measurement and
calculates the power delivered to a reference resistance (typically 50, 75, or
600 ). The formula used for conversion from the voltage reading is:
dBm = 10 × Log
You can choose from several reference resistance values:
R
250 , 300 , 500 , 600 , 800 , 900 , 1000 , 1200 , or 8000 .
Select dBm option
dBm measurement
You can view and select the reference value as described in
functions reference values"
Keysight 34450A User's Guide
[(Reading
10
= 2 , 4 , 8 , 16 , 50 , 75 , 93 , 110 , 124 , 125 , 135 , 150 ,
REF
2
) / 0.001  ]
/ R
REF
1
Press to exit
on page 60.
Functions and Features
Press to start
Ongoing measurement
Reference value
"Editing math
2
2
3
4
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