Spectrum Analyzer Measurements 3-9 Setting Up Markers
Spectrum Analyzer MG PN: 10580-00447 Rev. H 3-45
Placing a Normal Marker
1. Select MARKER to display markers. If markers were off, Marker 1 will automatically be made active at
the current center frequency.
2. Select another marker using MARKER > SELECT, then select one of 12 available markers. If the
marker was off, the marker will be made active and placed at the center frequency. If the marker was on,
it will be made the active marker. You can enable all 12 markers and place them separately on traces,
cursors, or set them as a fixed marker at a static frequency and amplitude.
3. Place a marker by first selecting it as the active marker, then do one of the following:
a. Enter a new FREQUENCY value from the MARKER menu. The frequency can be entered
manually or adjusted by using the slider or the + and – buttons to move the marker to the left and
right.
b. Drag the marker on the trace (note that anywhere on the vertical dashed blue line can be touched
to drag a marker’s position).
c. Use the PEAK SEARCH menu and the desired peak search function to automatically find signal
peaks (refer to “MARKER PEAK SEARCH Menu” on page 3-47). Some peak search functions can
be accessed by double tapping the marker or the blue marker line.
Placing a Fixed Marker
Fixed markers are set up the same as normal markers above, but are set to Fixed using the MODE button. In
addition to setting a fixed frequency, you can set a fixed amplitude. Fixed markers are typically used as a
reference marker when measuring amplitude differences relative to an absolute value.
Placing a Delta Marker
When a delta marker is on, its position data is relative to its reference marker. For example, if Marker 2 is set
as a delta marker, the delta reference is set to Marker 1. To set a delta marker and its reference:
1. Activate either a normal or fixed marker and place it in a reference location as described previously.
2. Activate a delta marker using MARKER > SELECT > Marker #, then select MODE > Delta.
3. Place the active delta marker by doing one of the following:
a. Enter a new FREQUNCY value.
b. Drag the marker on the trace (note that anywhere on the vertical dashed blue line can be touched
to drag a marker’s position.
c. Use the PEAK SEARCH menu and the desired peak search function to automatically find signal
peaks (refer to “MARKER PEAK SEARCH Menu” on page 3-47).
A delta marker is labeled with a green delta symbol between each marker number. For example, delta
Marker 2 relative to Marker 1 is displayed as “2Δ1”. If another marker is desired to be the reference marker,
select the delta marker as the active marker and then use DELTA REFERENCE > Marker # to select the
desired reference marker number.
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