Marker Operation - HP 8360 B Series User Manual

Marker Operation

Caution
The swept signal generator has five frequency markers that can
be used as fixed frequency "landmarks," or as variable frequency
pointers on a CRT display. To view the marker features of the swept
signal generator on a CRT, connect the swept signal generator as
shown in Figure l-8.
Refer to menu map 3, MARKER.
Press (PRESET).
Press (START) @ [GHz).
Press (STOP) @ (GHz).
Press (MARKER).
Select Marker Ml and enter
The swept signal generator is sweeping from 3 to 7 GHz, with a
100 ms sweep speed. A frequency marker is set at 4 GHz, which
causes an intensified dot to appear on the CRT. To obtain an
amplitude spike at that frequency, select amp1 Markers . Notice
that you can set the amplitude of the spike with the rotary knob or
entry keys. To return to the intensified dot representation, select
Amplitude markers increase the output power at the marker
frequency. Provide protection to devices that could be damaged.
For a second marker, select Marker M2 and enter @ 0 @ LGHz).
This process can be continued for all five markers. Note that the
marker displayed in the active entry area is "active" and can be
controlled by the rotary knob, arrow keys, and numeric entry keys.
Once the Ml and M2 markers are established, the marker sweep
function, softkey MI--M2 Sweep, temporarily changes the original
start/stop frequencies to those of markers Ml and M2. Select
Ml--M2
Sweep. Notice that the swept signal generator now is
sweeping from 4 to 5.5 GHz. Use this function to focus in on a
selected portion of the frequency sweep. Select Ml--M2 Sweep again.
This turns the function off and returns the swept signal generator to
its original sweep parameters. To change the start/stop frequencies
for the swept signal generator, not just temporarily, use the softkey
Start=Ml Stop=H2.
As an example of the delta marker function:
Select Marker M3 and enter @ 0 0 IGHz).
Select Delta Marker.
The frequency difference between marker 3 and marker 1 is displayed,
and the CRT trace is intensified between the two markers. The active
entry area displays:
2700.000000 MHz