Rohde & Schwarz R&S ZNA Series - Page 593

GUI reference
R&S
®
ZNA
593User Manual 1178.6462.02 ─ 29
Source Power
See "Power" on page 526.
Source Step Att
Source step attenuator setting used during calibration, if activated.
Remote command:
[SENSe<Ch>:]CORRection:ADVanced:SOURce<PhyPt>:ATTenuator
[SENSe<Ch>:]CORRection:ADVanced:SOURce<PhyPt>:ATTenuator:STATe
ZNA Port Power
"Power Result", as displayed in the port settings dialog.
Cal Power Offset
For power calibrations only: Specifies a gain (positive values) or an attenuation (nega-
tive values) in the signal path between the source port and the calibrated reference
plane. With a "Cal Power Offset" of n dB, the target power at the reference plane (cal
power) is equal to the actual output power at the port plus n dB. The "Cal Power Off-
set" has no impact on the source power.
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 4.7.37, "Internal low power spur reduction amplifier",
on page 314
●
Port 2: Chapter 4.7.36, "Internal low noise preamplifier", on page 312
Cal softtool