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RBW Selections
You can use the step keys to change the RBW in a 1−3−10 sequence.
All the signal analyzer RBWs are digital and have a selectivity ratio of 4.1:1. Choosing the next lower
RBW (in a 1−3−10 sequence) for better sensitivity increases the sweep time by about 10:1 for swept
measurements, and about 3:1 for FFT measurements (within the limits of RBW). Using the knob or
keypad, you can select RBWs from 1 Hz to 3 MHz in approximately 10% increments, plus 4, 5, 6 and 8
MHz. This enables you to make the trade off between sweep time and sensitivity with finer resolution.
Chapter 4
51
Measuring a Low−Level Signal
Measuring a Low−Level Signal
Decreasing the Resolution Bandwidth