Noise Measurements R&S FSL
1300.2519.12 2.20 E-11
Measurement example – Measuring the intrinsic noise of the R&S FSL at 1 GHz in a
1.23 MHz channel bandwidth with the channel power function
Test setup:
Leave the RF input of the R&S FSL open–circuited or terminate it with 50 .
Procedure:
1. Set the R&S FSL to its default state.
Press the PRESET key.
The R&S FSL is in its default state.
2. Set the center frequency to 1 GHz and the span to 1 MHz.
Press the FREQ key and enter 1 GHz.
Press the SPAN key and enter 2 MHz.
3. To obtain maximum sensitivity, set RF attenuation on the R&S FSL to 0 dB.
Press the AMPT key.
Press the RF Atten Manual softkey and enter 0 dB.
4. Switch on and configure the channel power measurement.
Press the MEAS key.
Press the CP, ACP, MC–ACP softkey.
The R&S FSL activates the channel or adjacent channel power measurement according to the
currently set configuration.
Press the CP/ACP Config softkey.
The submenu for configuring the channel is displayed.
Press the Channel Settings softkey.
The submenu for channel settings is displayed.
Press the Channel Bandwidth softkey and enter 1.23 MHz.
The R&S FSL displays the 1.23 MHz channel as two vertical lines which are symmetrical to the
center frequency.
Press the Adjust Settings softkey.
The settings for the frequency span, the bandwidth (RBW and VBW) and the detector are
automatically set to the optimum values required for the measurement.
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