Specifications

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NETWORK ANALYZERS
7
Performance and functions
• Vector error-corrected noise figure measurements
The MS4622B and MS4623B Vector Network Measurement
Systems deliver the industry’s first ever capability for making vector
error-corrected noise figure measurements on active devices in to-
day’s hottest market – wireless communications. The Noise Figure
options, 4 and 4B, covering the frequency ranges of 50 MHz to 3 GHz
and 50 MHz to 6 GHz respectively, give you the functionality for making
noise figure measurements much more accurately than has ever before
been possible. This option allows for making S-parameter measure-
ments and noise figure measurements with a single test connection.
The measurement setup can be configured to make measurements
with the noise source set in either an internal or an external mode. In
the external mode, the noise source is connected directly to the DUT
similar to traditional scalar noise figure measurements. In the inter-
nal mode, the noise source is connected to the VNA rear panel and
internally routed to port 1. Therefore, when a 12-term calibration is
applied concurrently with the noise figure calibration, you can make
vector error-corrected noise figure measurements.
• Built-in third measurement port and second internal source
Some of today’s most demanding VNA measurements involve the
characterization and tuning of multiple port devices such as duplex-
ers, combiners, couplers, etc. In a traditional 2-port VNA, the full
characterization and tuning of such devices presents significant chal-
lenges in terms of measurement speed, calibration, and the switch-
ing of input signals and measurement ports. With the addition of the
third measurement port, the simplicity and speed with which these
devices can be tested is greatly enhanced. The MS4622B and
MS4623B network analyzers not only offer the option of adding a
third measurement port, they also offer the industry’s first ever sec-
ond internal source. This second source is completely independent
from the main source that switches between ports 1 and 2. By the
addition of this second source, the potential now exists for replacing
the signal generators and spectrum analyzers currently needed to
characterize the non-linear effects that occur when multiple tones
are simultaneously present in the pass-band of an active device.
• AutoCal
®
One source of potential errors and inaccuracies in any measurement
system is its calibration. A great deal of time can be wasted in a
busy manufacturing environment trying to verify calibration accuracy,
especially when multiple shifts run on several different test stations
for the same product line. For this situation, you need a calibration
system in place that offers the highest possible degree of assurance
that every station on every shift is calibrated for identical results.
With the Anritsu AutoCal
®
automatic calibrator, you get just that.
Simply connect a serial cable between the AutoCal
®
and the rear
panel of the VNA and you’re ready to go. If adapters become neces-
sary, AutoCal
®
can handle them with its revolutionary approach to
adapter removal. This approach avoids the necessity of multiple
calibrations commonly used in adapter removal calibrations. By us-
ing the AutoCal
®
adapter characterization process, you can
calibrate in a SMA, Type N, 3.5mm, TNC, or 7/16 environment with
confidence.
• Mixer measurements
Scorpion can also accurately characterize your mixers and other fre-
quency-translating devices (FTDs) for isolation, match, conversion
loss, noise figure and frequency translated group delay (FTGD).
Without changing cables or instruments, Scorpion can make all
these measurements quickly, easily and accurately. Add an external
synthesizer and Scorpion can easily orchestrate swept frequency
and swept power mixer IMD measurements. You no longer have to
buy and integrate five separate instruments to perform these every-
day measurements. With the integrated measurement flexibility of
Scorpion, you can design and manufacture all of your passive, ac-
tive, and frequency translating devices using a single instrument.