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Chapter 6 203
Analog Measurements - Screens and Control Fields
Control Fields for Analog Measurements
Lvl (marker)
This measurement field displays the signal level of the signal at the
current marker position on the oscilloscope.
Operating Considerations
The unit-of-measure for this field is dependent on the source of the
signal being measured. For instance, when measuring a signal from the
AUDIO IN connector, the amplitude is measured in Volts. When looking
at a signal from the FM demodulator, the amplitude is given in units of
kHz.
When the Vert Offset field is ≠ 0.00, the displayed marker level is
referenced to the center line generated by the vertical offset feature, not
the center line of the screen.
The
Ref Set
function can be used with this measurement to display
levels relative to a specific value. (See “Setting A Measurement
Reference” on page 67.)
Screens on which this field is displayed
SCOPE: all control menus
Lvl (normal marker)
Marker frequency (Marker Lvl) displays the frequency at the marker’s
present position on the spectrum analyzer when the Norm/Delta field
on the Marker controls menu is set to Norm. See Figure 6-2 on page 198.
See “Using the Spectrum Analyzer’s Delta Markers” on page 113 for
more information about using the spectrum analyzer’s markers.
Operating Considerations
When switching from delta mode to normal mode, the delta marker
becomes the normal marker.
Screens on which this field is displayed
SPEC ANL: all menus except mask controls