Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 290 / 813

Channel Menu R&S
®
ZVA/ZVB/ZVT
1145.1084.12 4.128 E-6
Output power at the test ports
Power sets the output power at the test port that supplies the stimulus for the active channel. The
channel power can be varied over a wide dynamic range. This leaves enough flexibility to include an
attenuation or gain in the test setup.
The channel power can be modified by the following settings:
•
Generator step attenuators decrease the output power by a definite factor a
step
. a
step
can be set
individually for all test ports but does not change during a sweep.
•
The Receiver section of the Port Configuration dialog provides a port-specific constant power
offset (for arbitrary sweeps) and a port and frequency-dependent power slope factor (for
frequency sweeps).
•
A generator (source) power calibration generally modifies the channel power so that Power is
equal to the power at the calibrated reference plane.
Remote control: SOURce<Ch>:POWer[:LEVel][:IMMediate][:AMPlitude]
Receiver Step Attenuators
Opens a dialog to set the attenuation for the received waves. The generator attenuation is set
automatically; see Automatic generator attenuation below .
The Step Attenuators dialog consists of a non-editable column listing the received waves b1 to bn (Port
#) and a column to enter the attenuation for each wave (Attenuation) . n is equal to the total number of
test ports of the analyzer. Attenuation factors can be entered for ports only where a receiver step
attenuator is installed.
Receiver and generator step attenuators
•
Receiver and generator step attenuators can be purchased as ZVA options. The following
attenuators are available:
Port 1 Port 2 Port 3 Port 4
ZVA8,
generator
ZVA8-B21 ZVA8-B22 ZVA8-B23 ZVA8-B24
ZVA8,
receiver
ZVA8-B31 ZVA8-B32 ZVA8-B33 ZVA8-B34
ZVA24,
generator
ZVA24-B21 ZVA24-B22 ZVA24-B23 ZVA24-B24