Spectrum Measurements
R&S
®
ESR
445User Manual 1175.7068.02 ─ 12
discrete spurious signals in the channel, the channel power measurement method
must be used to obtain correct measurement results.
Measurement Example – Measuring the Intrinsic Noise of the R&S ESR 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 ESR open-circuited or terminate it with 50 Ω.
Procedure:
1. Set the R&S ESR to its default state by pressing the [PRESET] key.
The R&S ESR is in its default state.
2. Set the center frequency to 1 GHz and the span to 1 MHz.
3. To obtain maximum sensitivity, set RF attenuation on the R&S ESR to 0 dB.
4. Set the "Sweep Type" to "Sweep".
5. Switch on and configure the channel power measurement.
a) Press the [MEAS] key.
b) Press the "Ch Power/ACLR" softkey.
The R&S ESR activates the channel or adjacent channel power measurement
according to the currently set configuration.
c) Press the "CP/ACLR Settings" softkey.
d) Press the "Channel Settings" softkey.
e) Press the "Channel Bandwidth" softkey and enter 1.23 MHz.
The R&S ESR displays the 1.23 MHz channel as two vertical lines which are
symmetrical to the center frequency.
Advanced Measurement Examples
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