Information

RSAxxx(N) EMI Mode – Getting Started
RIGOL Technologies CO., LTD. 09.09.2021
Figure 3: Menu [Scan Table] for basic adustment of measurement scan
In this menu, the main settings of test setup can be realized. The first setting will be focus to the
adjustment of frequency range according to the measured standard. This will be realized in [Scan Table]
(see figure 3).
Here you can select the required frequency range.
 Up to 10 ranges are displayed. Each range will use max. 10.000 test points. If more measurement
points are required (e.g. to reach a frequency resolution of RBW/2) then ranges can be combined
together with selecting several ranges. The default points are calculated to reach RBW/2
resolution.
 The RBW is adjusted by default according to CISPR norm (e.g. from 150 kHz to 30 MHz: RBW =
9 kHz),
 Scan time is the optimum for the test. But can be modified according to your need.
 For each range, the dynamic range can be modified. Eg. If you expect more small signals slightly
above the noise floor, then you should use pre-amplifier and set the attenuator to 0 dB. If you are
expecting high peaks, then pre-amp is “OFF” and the attenuator is set to a higher level according
to your needs (e.g. 50 dB).
 In case you would need different dynamic range settings for different frequency ranges, then you
can use several ranges according to your need and set for each single range the dynamic range
you need. For example: range 1: attenuator: 0 dB and pre-amp: “ON” (in case you expect smaller
signals here), range 2: attenuator: 30 dB and pre-amp: “OFF” (in case you expect higher signal
values here) etc.