Chapter 3 107
Making EDGE (with GSM) Measurements
Making the EDGE EVM Measurement
• I/Q Error (Quad-View) - Four display windows show EVM, Mag Error
and Phase Error graphs, and the EVM summary data text.
Figure 3-17 Error Vector Magnitude Measurement - Quad View
Changing the Display
The Display key accesses the menu to allow the following selections for
changing the graph displays:
• Symbol Dots - Allows you to toggle the symbol dots between On and
Off. The default setting is On.
When either EVM, Phase Error or Mag Error window is active in the
I/Q Error (Quad-View) display, the Span X Scale key accesses the menu
to allow the following selections:
•
Scale/Div - Allows you to define the horizontal scale by changing the
symbol value per division. The range is 1 to 100 symbols per
division. The default setting is 13.7 (for BS) or 13.4 (for MS) symbols
per division.
•
Ref Value - Allows you to set the symbol reference value ranging from
0 to 1000 symbols. The default setting is 0.
• Ref Position - Allows you to set the reference position to either Left,
Ctr (center) or Right. The default setting is Left.
To Next Page
Loading...
Need help?
General
