8-25
IM 703155-01E
Checking the Output Waveform
8
Explanation
Displaying the Waveform Data
The description is the same as section 8.1. See page 8-5.
Displayable Waveform Data Formats
The description is the same as section 8.1. See page 8-5.
Constellation Display
The waveform data stored on the VB8300 internal hard disk, CF card, or USB memory
can be displayed as a diagram with the vertical (Y) axis as the amplitude of Q and the
horizontal (X) axis as the amplitude of I.
Note
•
The waveform data that can be displayed is up to the first 2,000,000 points.
•
For the setup procedures on the Configure menu, see section 8.6.
Vertical (Y) and Horizontal (X) Axes
• Vertical Scale (Y Axis Mag.)
You can set the vertical scale.
Selectable range: 0.1 to 100.0 (in 0.1 steps)
Initial value: 1.5
• Vertical Axis Auto Scale (Y Axis Auto Scale)
The vertical scale is set so that the amplitude of Q of the waveform data in the vertical
direction fits on the waveform display frame.
• Horizontal Scale (X Axis Mag.)
You can set the horizontal scale.
Range: 0.1 to 100.0 (in 0.1 steps)
Initial value: 1.5
• Horizontal Axis Auto Scale (X Axis Auto Scale)
The horizontal scale is set so that the amplitude of I of the waveform data in the
horizontal direction fits on the waveform display frame.
Y Axis Mag.
–(Y Axis Mag.)
X Axis Mag.
–(X Axis Mag.)
0
0
Amplitude of I
Amplitude of Q
• Display Begin and End Points (Begin Point and End Point)
You can set the points in the following range.
Selectable range: 0 to 1999999 points (in 1 point steps)
Be sure that (display end point – display begin point) is greater than 0.
Default values: Begin Point: 0 point, End Point: 256 point
8.4 Constellation Display
