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Interference Analyzer (Option 25) 3-16 Marker Menu
Spectrum Analyzer MG PN: 10580-00349 Rev. M 3-73
Marker 2/2 Menu
Key Sequence:
Marker > More
Marker Noise On/Off: Turns the markers into noise markers with units
of dBm/Hz. When this option is selected, the detection method is
automatically changed to RMS and the displayed value is compensated for
the noise bandwidth of resolution bandwidth filter.
Marker Table On/Large/Off: Causes a table to be displayed below the
sweep window. The table is automatically sized to display all markers that are
turned on. In addition to the marker frequency and amplitude, the table also
shows delta frequencies and amplitude deltas for all markers that have deltas
entered for them. If Large is selected, a large screen display opens
underneath the graph that displays both frequency and amplitude for the
active marker in large type.
All Markers Off: Turns off all markers.
Counter Marker On/Off: Sets the frequency counter mode for the active
marker. Marker frequency values are normally limited in resolution to
individual display pixels. Each pixel may represent multiple frequencies. In
the frequency counter mode, in the region of the counter marker, higher
resolution digital signal processing is used to determine the frequency. Using
Counter Marker in association with Marker to Peak will result in the frequency
of the signal peak to a much higher displayed resolution. Note that frequency
accuracy is affected by the RBW setting and sweep times may be longer
when using counter marker because of the additional signal processing.
Set Marker To Channel: If a signal standard has been selected, pressing
this key brings up a dialog box to select a channel. Select a channel number
for the current signal standard, and the active marker will be set to the center
frequency of the channel.
If no signal standard has been selected, a message “No standard selected.
Press Enter or Escape to Continue.” is displayed. Press either button to leave
the settings as they were before the key was pressed.
Marker Style: This key changes the behavior of the reference markers.
If Fixed is selected, reference markers stay at the amplitude they were at
when the associated delta marker was turned on. If Tracking is selected, the
amplitude of the reference marker changes as the signal amplitude is
changed. Note that the reference marker tracks the amplitude, not the
frequency of a signal.
Marker 1 Reference: Selects whether Marker 1 is the reference for all six
delta markers, or whether each of the six reference markers has an
associated delta marker.
Back: Returns to the “Marker Menu” on page 3-71 .
Figure 3-67. IA Marker 2/2 Menu
Back
Marker (2/2)
Marker Noise
On Off
Counter Marker
On Off
Marker Style
Fixed Tracking
Marker 1 Reference
On Off
All Markers
Off
Set Marker
to
Channel
Market Table
On Large Off