RIGOL DM3058 - Manual (Page 157)

RIGOL
Programming Guide for DM3058/DM3058E 5-8
1. DB
Command Format:
DB
Function:
The command enables dB operation.
Explanations:
The unit of the readings shown on the main display is dB.
2. DBCLR
Command Format:
DBCLR
Function:
The command disables dB operation.
3. DBREF
Command Format:
DBREF
DBREF?
Function:
The commands query and set the reference impedance of dB.
Explanations:
The value should be within the in table 5-1, or else, errors may occur.