Rigol DSA815, User Manual

Page: 68 / 241

RIGOL Chapter 2 Front Panel Operation
User’s Guide for DSA800/E Series
2-16
Units
Set the unit of the Y-axis to dBm, dBmV, dBuV, Volts or Watts. Wherein, dBm,
dBmV and dBuV are for Log scale; Volts and Watts are for Linear scale. The default
is dBm.
Key Points:
The conversion relationships between units are as follows.








× =
W R
Volts
B
001 . 0
1
log 10 m d
2
(2-4)






=
V
Volts
V B
µ
µ
1
log 20 d
(2-5)






=
V
Volts
V B
m 1
log 20 m d
(2-6)
R
Volts
Watts
2
= (2-7)
Wherein,
R
denotes the reference resistance.
Ref Offset
Assign an offset to the reference level to compensate for gains or losses generated
between the device under measurement and the analyzer.
Key Points:

The change of this value changes both the reference level readout and the
amplitude readout of the marker; but does not impact the position of the
curve on the screen.

You can modify this parameter using the numeric keys. For more details,
please refer to “Parameter Setting”.