R&S ZNA26 - Page 539

GUI reference
R&S
®
ZNA
539User Manual 1178.6462.02 ─ 20
Example: Use of an amplifier in the signal path
Assume that a DUT requires a constant input power of +25 dBm, and that the mea-
surement path contains an amplifier with a 30 dB gain. After a reset of the analyzer, the
channel power P
b
is -10 dBm. Select a "Port Power Offset" of +5 dB at the calibrated
source port and a "Cal Power Offset" of +30 dB. Then the source power calibration
ensures that the constant input power of +25 dBm is maintained across the entire
sweep range. The actual output power of the analyzer is -5 dBm.
Notice that a power calibration with an appropriate "Cal Power Offset" can prevent
excess input levels at the DUT.
Remote command:
SOURce<Ch>:POWer<PhyPt>:CORRection:LEVel:OFFSet
SOURce<Ch>:POWer<PhyPt>:CORRection:GENerator<Gen>:LEVel:OFFSet
Cal Power
Port power used during calibration, if activated.
Remote command:
[SENSe<Ch>:]CORRection:ADVanced:POWer<PhyPt>
[SENSe<Ch>:]CORRection:ADVanced:POWer<PhyPt>:STATe
Preamp Gain
Preamplifier gain used during calibration, if activated.
Only available if the R&S ZNA is equipped with optional preamplifiers.
●
Port 1: see Chapter 4.7.36, "Internal low power spur reduction amplifier",
on page 283
●
Port 2: Chapter 4.7.35, "Internal low noise preamplifier", on page 282
Remote command:
[SENSe<Ch>:]CORRection:ADVanced:SENSe<PhyPt>:PREamp
[SENSe<Ch>:]CORRection:ADVanced:SENSe<PhyPt>:PREamp:STATe
Receiver Step Att
Receiver step attenuation used during calibration, if activated.
Only available for ports that are equipped with receiver step attenuators (see Chap-
ter 4.7.30, "Receiver step attenuators", on page 279).
Remote command:
[SENSe<Ch>:]CORRection:ADVanced:SENSe<PhyPt>:PREamp
[SENSe<Ch>:]CORRection:ADVanced:SENSe<PhyPt>:PREamp:STATe
Parameter Source Flatness
Specifies the parameters of a source flatness calibration. See Chapter 5.11.3, "Pwr Cal
Settings tab", on page 572.
Reference Receiver Cal Power
See "Reference Receiver Cal Power" on page 576.
Cal softtool