GUI reference
R&S
®
ZNA
540User Manual 1178.6462.02 ─ 20
Noise Figure tab
In this tab, you can adjust noise figure calibration settings such as power levels and
detector times.
The Quickset functionality in the Noise figure setup dialog automatically chooses suita-
ble calibration settings. Manual configuration requires carefully chosen power levels,
depending on the active receiver step attenuator and internal preamplifier configura-
tion.
For a noise figure measurement, the power level at the test port input must not exceed
the values given in the table below .
Table 5-5: Max. power level
Receiving port coupler
standard reversed
Receiver Step Att. = 10 dB 10 dBm 0 dBm
"Receiver Step Att." = 0 dB 0 dBm -10 dBm
"Receiver Step Att." on page 477 = 20 dB -20 dBm -30 dBm
"Preamp. Gain" = 25 dB -25 dBm -35 dBm
"Preamp. Gain" = 30 dB -30 dBm -40 dBm
Cal softtool
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