Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 371 / 813

R&S
®
ZVA/ZVB/ZVT Channel Menu
1145.1084.12 4.209 E-6
Power Calibration
The Power Calibration submenu configures and starts a source or receiver power calibration.
•
Source Power Cal... opens the configuration dialog for a source power calibration.
•
Receiver Power Cal... opens the configuration dialog for a receiver power calibration.
Power correction data can be stored to a cal group and applied to several channels; see
description of the Calibration Manager.
In remote control it is possible to read, modify and reload power calibration data. Refer to the
description of the commands
SOURce<Ch>:POWer<Pt>:CORRection:DATA
and
[SENSe<Ch>:]CORRection:POWer<port_no>:DATA
.
Remote control: SOURce<Ch>:POWer:CORRection...
[SENSe<Ch>:]CORRection:POWer...
Source Power Cal...
Opens the configuration dialog for a source power calibration.
Purpose of a source power calibration
A source power calibration ensures accurate power levels of the generated wave at an arbitrary
reference plane in the measurement path. The calibrated reference plane is typically the input of the
DUT.
In a frequency sweep, the power at the reference plane is maintained at a constant Cal Power value.
The source power calibration eliminates frequency response errors in the signal path between the
source and the reference plane. It is possible to introduce an arbitrary attenuation or gain into the signal
path so that the
Cal Power is not restricted to the power range of the source. A typical application for a
power calibration in a frequency sweep is the measurement of the gain of an amplifier across a
frequency range but at a fixed input power.
In a power sweep, the power calibration ensures that the power at the reference plane is either constant
or a linear function of the stimulus power. A typical application for a power calibration in a power sweep
is the measurement of the gain of an amplifier across a power range but at a fixed frequency.