Changing the Resolution Bandwidth

Changing the Resolution Bandwidth
The default resolution bandwidth is 0.1% of the span in Auto mode. By selecting Manual, you can define a narrower bandwidth and thereby see spurious signals that you might miss in Auto mode. However, the measurement will be slower.

NOTE: The auto mode is appropriate for most measurements. When you set the Res BW to Manual, you must remember to change the Res BW whenever you change the span. Otherwise, the measurement may take longer then expected or will not have the expected accuracy and or resolution.

NOTE: Furthermore, if you set the span greater than 1 MHz, the maximum resolution bandwidth allowed is 1% of the span. For example, if you set the span to 20 MHz, the maximum resolution bandwidth will be 200 kHz.

Step
Notes

1
[Setup]

2
On [Res BW] select Manual.
Each time you press this softkey, the selected option changes. In Auto mode, the resolution bandwidth is coupled to the span setting, Manual mode decouples the resolution bandwidth from the span.

3
Enter the bandwidth using the numeric keypad.

4
[Hz] or [kHz]


	Step	Notes
1	[Setup]
2	On [Res BW] select Manual.	Each time you press this softkey, the selected option changes. In Auto mode, the resolution bandwidth is coupled to the span setting, Manual mode decouples the resolution bandwidth from the span.
3	Enter the bandwidth using the numeric keypad.
4	[Hz] or [kHz]