5-7
IM 703155-01E
Setting the Output Waveform
5
Voltage Offset (DC Voltage)
You can set an offset voltage to the voltage level of I and Q.
• The setting varies between the differential output and single-ended models.
• You can change the voltage offset even while the waveform is being output.
• Common-mode Offset
The specified offset voltage is added to the I, I
_
, Q, and Q
_
waveforms.
Selectable range: –500 to 1500 mV (in 1 mV steps)
Default value: 0 mV
• Differential Offset
The specified offset voltage is added to the I and Q waveforms. An offset voltage that
is negative to I and Q is added to I
_
and Q
_
.
Selectable range: –100.0 to 100.0 mV (in 0.2 mV steps)
Default value: 0.0 mV
Differential offset cannot be specified on models with single-ended outputs.
Q
I
Q
I
Q
I
Q
I
Offset voltage
Q
I
Gain
Phase
(when
θ
is positive)
Voltage offset
I/Q gain ratio
(when the setting is positive)
Quadrature offset
(when
θ
is positive)
θ
θ
: Specified value (deg)
θ
: Specified value (deg)
θ
2
θ
2
X
X
There are two types of offset voltages:
common offset voltage and differential
offset voltage. For a description of their
differences, see section 2.4.
5.4 Setting the Gain, Phase, IQ Gain Ratio, Quadrature Offset, Voltage Offset, Low-pass Filter, and Noise
