User manual

SIGLENT
SDM3055 Digital Multimeter 83
Example 3: dBm Measurement
dBm is commonly used in audio signal measurement. The following will
introduce you how to measure dBm value.
Operating Steps：
1. Press on the front panel to select AC Voltage measurement
function and choose a proper voltage range.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-9.
3. Set the dBm parameters.
Press →【Statistics】to turn on the statistics function and set the
selective value of dBm as a reference value within supposed circuit by
using direction keys: 50Ω.
Diagram 3- 6 Select Reference Resistance as Measurement Value
4. Press【Done】to return to the higher level menu. At this time, the reading
shown on the screen is the Power value of reference resistance.
Diagram 3- 7 dBm Operation Result