Filter
Top Products
106 Chapter 4
Making Measurements
Making the Spectrum (Frequency Domain) Measurement
Changing the I or Q Waveform Window
If the
I or Q Waveform window is active in the I and Q Waveform view, the
SPAN X Scale and AMPLITUDE Y Scale keys access the menu to modify the
following parameters:
• With the
SPAN X Scale key:
—
Scale/Div - Allows you to set the horizontal scale by changing a
time value per division. The range is 1.00 ns to 1.00 s per division.
The default setting is 18.8 ms per division. However, since the
Scale Coupling default is On, this value is automatically
determined by the measurement results. To manually set this
value
Scale Coupling must be Off.
—
Ref Value - Allows you to set the reference value ranging from
−1.00 to 10.0 s. The default setting is 0.00 s. However, since the
Scale Coupling default is On, this value is automatically
determined by the measurement results. To manually set this
value
Scale Coupling must be Off.
—
Ref Position - Allows you to set the reference position to either Left,
Ctr (center) or Right. The default setting is Left.
—
Scale Coupling - Allows you to toggle the scale coupling function
between
On and Off. The default setting is On. Upon pressing the
Restart front-panel key or Restart softkey under the Meas Control
menu, this function automatically determines the scale per
division and reference values based on the measurement
results.To manually set either
Scale/Div or Ref Value values, Scale
Coupling
must be Off.
• With the
AMPLITUDE Y Scale key:
—
Scale/Div - Allows you to set the vertical scale by changing the
amplitude value per division. The range is 1.00 nV to 20.00 V per
division. The default setting is 100.0 mV. However, since the
Scale
Coupling
default is On, this value is automatically determined by
the measurement results. To manually set this value
Scale
Coupling
must be Off.
—
Ref Value - Allows you to set the reference value ranging from
−250.00 to 250.00 V. The default setting is 0.00 V. However, since
the
Scale Coupling default is On, this value is automatically
determined by the measurement results. To manually set this
value
Scale Coupling must be Off.
—
Ref Position - Allows you to set the reference position to either Top,
Ctr (center) or Bot (bottom). The default setting is Ctr.