Instrumentation & Measurement Magazine 25-7 - 59

Full support for the S11, S12, S21, S22 measurements of 2
port devices. Phase and magnitude data can be visualized in
rectangular, Smith chart, or polar pilots formats, or exported
as a Touchstone s2p data file.
You can extend your measurement capabilities to include
TDR (time domain reflectometry), a process for determining
distance or time to impedance changes in a transmission
line. These changes could include shorts, opens, connectors or
other areas where impedance can change. An excellent method
for fault finding in PCB assemblies.
Automated power sweep sequence at a fixed frequency can
be configured, ideal for measurement of linearity or compression
of amplifiers and other 2 port devices. Power accuracy
can be calibrated with support for external USB power meters.
The eVNA View software suite incorporates an API
which allows custom automation programs to be created for
the eVNA. Most common programming environments are
supported, including Python, LabVIEW, C# and MatLab. Supports
SCPI & Host or Remote Computer Control
Find more information at http://www.minicircuits.com.
PXI/PXIe High Density Precision Resistor
Module,
The 40-297A-010 (PXI)
and the 42-297A-010 (PXIe)
are 18-channel programmable
resistors with a
range of 1 Ω to 31 Ω. They
are part of the Pickering's
40/42-297A series of high
density precision resistor
modules and provide a
simple solution for applications
requiring accurate
simulation of resistive sensors.
They are available
in a variety of resistance
ranges and resolutions to meet the needs of functional test
systems and are suitable for engine controller testing where resistive
sensors provide information such as temperature. The
40/42-297A's channels can be set as short or open circuit to
simulate a wiring or sensor fault.
Key Features:
◗ Available as a PXI or PXIe Module
◗ High Density Resistor Simulation
◗ Up To 18 Channels in a 1-Slot Module
◗ Resistance Resolution to 0.125 Ω
◗ Values From 1 Ω to 85.3M Ω
◗ Accuracy of up to ±0.1% ±Resolution
◗ Short and Open Simulation
◗ Simple Software Control Through Resistance Calls
◗ VISA, IVI and Kernel Drivers Supplied for Windows
◗ PXI Versions Supported by PXI or LXI Chassis
Find more information at http://www.pickeringtest.com.
Motorized Optical Mounts for Laser
Applications
PI offers a compact motorized
mirror mount
family, for applications
where large angles, high
stability, and lower dynamics
are required.
Motorized kinematic mirror
mounts provide a means to control the pitch and yaw axes
of a mirror, usually to direct or deflect a laser beam. To achieve
large angles up to 16 degrees while keeping the dimensions as
small as possible, the N-480 series kinematic motorized optical
mirror mounts are equipped with long travel, high resolution
piezo motors. The miniature motors are capable of 20 nm
steps which translates into angular resolution as small as 0.3
μrad. Another advantage of PI's compact piezo motor actuator
concept is the versatility of control-manual or conveniently
through software.
Piezo motors are self-locking and provide very high stability,
a prerequisite for many kinematic mirror mount
applications, such as optical path alignment, where excellent
long-term angular stability is required. Piezo motors are
available for open-loop and closed-loop control. Closed-loop
control provides higher accuracy and better repeatability. For
most applications, open-loop actuators are sufficient, especially
when an independent signal, such as optical power, can
be used to close the loop externally.
Find more information at https://www.pi-usa.us/en.
Robert Goldberg (r.goldberg@ieee.org) has over 35 years' experience
with over 25 years in management of the design and
development of hardware and software for a broad range of
military electronic products involving digital, RF/Microwave,
electro-optical and electromechanical systems. He is retired
from ITT Aerospace Communications Division in Clifton, NJ,
where he was responsible for Sensor Communication programs
utilizing the application of sensor radios developed by
ITT as a result of work with DARPA on the Small Unit Operations
Situation Awareness System (SUOSAS). Prior to joining
ITT, he held positions in systems test and systems engineering
with Northrop Grumman in programs related to RF and
IR electronic warfare systems. He is a Fellow of the IEEE and
is currently chairman of the Fellows Evaluation Committee of
the IEEE Instrumentation and Measurement Society.
October 2022
IEEE Instrumentation & Measurement Magazine
59
http://www.pickeringtest.com http://www.minicircuits.com https://www.pi-usa.us/en
Instrumentation & Measurement Magazine 25-7

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