SIGLENT TECHNOLOGIES SDM3055 Series User Manual

SDM3055 Series Digital Multimeter User Manual
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dBm
The dBm function is logarithmic and based on a calculation of power delivered to a reference
resistance, relative to 1 mill watt. Besides, this function only applies to AC voltage and DC voltage
measurements.
Press → [dB/dBm] → [On] and select [Function dBm] to enter the interface shown in the
following diagram.
Diagram 2-60 dBm Function Interface
Table 2-24 dB Measurement Function Menu Function Description
Function Menu
Settings
Description
dB/dBm
On/Off
Turn on or turn off dB or dBm function.
Function dBm
Open dBm function and the lower right corner of
the main display show “dBm”.
Ref R
Set the parameter via direction keys: 50Ω ~ 8000Ω.
Done
Save all changes and return to the higher-level menu.
The computation method of the dBm:
When dBm function is turned on, the measured value of voltage is transformed into dBm according
to the following formula.
dBm = 10 x Log10 [(Reading2 / RREF) / 0.001W]

SIGLENT TECHNOLOGIES SDM3055 Series Specifications

General

Brand	SIGLENT TECHNOLOGIES
Model	SDM3055 Series
Category	Multimeter
Language	English