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120 Chapter 4
Making Measurements
Making the Waveform (Time Domain) Measurement
If the I/Q Polar window is active in the I/Q Polar view, the SPAN X Scale
or
AMPLITUDE Y Scale key accesses the menu to modify the following
parameters:
•
I/Q Scale/Div - Allows you to set the vertical and horizontal scales by
changing a value per division. The range is 1.00 nV to 20.00 V per
division. The default setting is 100.0 mV.
•
I or Q Origin - Allows you to set the reference value ranging from
−250.00 to 250.00 V. The default setting is 0.00 V.
The
Display key is not available for this measurement.
Using the Markers
The Marker front-panel key accesses the menu to configure the markers.
•
Select 1 2 3 4 - Allows you to activate up to four markers with the
corresponding numbers, respectively. The selected number is
underlined and its function is defined by pressing the
Function key.
The default is 1.
•
Normal - Allows you to activate the selected marker to read the time
position and amplitude of the marker on the RF envelope trace.
Marker position is controlled by the
RPG knob.
•
Delta - Allows you to read the differences in time positions and
amplitudes between the selected marker and the next.
•
Function Off - Allows you to define the selected marker function to be
Band Power, Noise, or Off. The default is Off. If set to Band Power, you
need to select
Delta.
•
Trace Signal Envelope - Allows you to place the selected marker on
Signal Envelope, I/Q Waveform.
•
Off - Allows you to turn off the selected marker.
•
Shape Diamond - Allows you to access the menu to define the selected
marker shape to be
Diamond, Line, Square, or Cross. The default shape
is
Diamond.
•
Marker All Off - Allows you to turn off all of the markers.
The front panel
Search key performs a peak search when pressed. A
marker will automatically be activated at the highest peak.