Installation guide

4
How Does It Work?
N5230C PNA-L Vector Network
Analyzer
• To perform the source-power
calibration.
• To provide output power in order to
measure gain compression, inter-
modulation distortion, and other
device parameters accurately.
With source power calibration, the power
at a certain point is calibrated, to be
within the range of the uncertainty of the
power meter and sensor. For details of the
Source Power Cal procedure, please refer
to the Agilent Web site’s PNA Source
Power Cal procedure online help fi le
(Power Calibration, under the Calibrating
a Measurement section). You can readily
obtain the procedure from Network
Analyzer’s Help menu.
Traditionally, the source power calibration
is performed through GPIB connectivity
and supported by the Agilent power meter
and sensor (see Figure 3). This solution
requires a big space for storing the power
meter and sensor in the production test,
along with considerable expense, to
acquire power meter and sensor just for
Source Power Cal purposes.
Today, the U2000 Series USB power
sensors offer a solution that is integrated
with the PNA. The U2000 Series USB
power sensors are used to replace both
power meter and sensor (see Figure 4)
in the source power calibration process.
It provides the direct connection into
PNA USB port via USB plug-and-play
connectivity. Throughout the Source
Power Cal process, PNA can be
confi gured to detect the power meter (via
GPIB) or USB power sensor (via USB)
from the power meter setting of the PNA
(see Figure 5).
Figure 5 PNA’s power meter setting for confi guring USB sensor via USB
connectivity
Figure 3 Source Power Cal using both power meter and power sensor
connected to PNA through GPIB connection
N5230C PNA-L
GPIB
Power Meter
Power Sensor
Coaxial cable
Figure 4 USB power sensor connecting directly to a PNA USB port through
USB mini-B connector
Coaxial cable
N5230C PNA-L
USB Port
USB mini-B connector
with locking mechanism
U2000 Series USB
power sensor