Making a Basic Measurement
NOTE
NOTE
NOTE
Making a Basic Measurement
Viewing a Signal
Improving Frequency Accuracy
10.While not all of the zeros following the decimal in the active function block are significant, the numbers after the decimal in the marker annotation
a.Press Mkr Fctn.
•The Marker Fctn softkeys appear.
b.Press Marker Count.
•The Marker Count softkeys appear.
Note softkey Marker Count On Off. If Off is underlined, press the softkey to toggle marker count on.
As shown in Figure
•The marker annotation changes from Mkr1 to Cntr1.
•The displayed resolution in the marker annotation improves.
When you use the frequency count function, if the ratio of the resolution bandwidth to the span is less than 0.002, the following message appears on the display: Freq Count: Reduce Span/RBW ratio
This indicates that the resolution bandwidth is too narrow.
11.Press Marker ➞, Mkr ➞ CF to move the 10 MHz peak to the center of the display.
Valid Marker Count Range
12.Move the marker down the skirt of the 10 MHz peak. Note that although the readout in the active function changes, as long as the marker is at least 26 dB above the noise, the counted value
Marker count functions properly only on CW signals or discrete peaks. For a valid reading, the marker must be ≥26 dB above the noise.
13.Press BW/Avg, Res BW, then enter a new value. This action makes the resolution bandwidth the active function and allows you to experiment with different resolution bandwidth (RBW) values.
14.Press Marker, Off to turn the marker off.
After properly setting the analyzer to display your signal, you can save the settings as either a user preset (press System, Power On/Preset, Save
44 | Chapter 3 |
