Instrumation Accuracy
The SMU4032 Switch is the only switching module
for USB specifically designed for making measurements with a precision
multimeter. No other mobile USB switch maintains the signal accuracy
necessary to make 6-1/2 or 7-1/2 digit measurements.
The SMU4032 uses an isolated structure, high accuracy
components and optical isolation, minimizing noise and keeping thermal
EMFs less than 1microVolt. These low thermal EMF errors make it
possible to make accurate measurements of voltages in the milliVolt
range and resistances in the milliOhm range. Other USB switching
modules don't specify their thermal EMF voltage errors because their
poor accuracy would become obvious.
Hardware Components
The SMU4032 is a 35-channel relay scanner that is designed for
use in applications requiring precision signal switching. Each of
the relays can be controlled individually, or automatically routed
using pre-defined configurations. All switching actions are performed
within a single actuation time of less than 5 milliseconds.
The SMU4032 switching module Weighs less then a pound, and has
dimensions of 5'' X 7'' X 1.3''. The USB switch provides cost effective
and concise automated measurement switching capabilities, without
compromising performance.
SMU4032 Schematic Diagram
Applications
The SMU4032 is designed for more demanding applications
requiring lower noise and higher precision. This includes automated
production testing, laboratory automation, and Portable/field testing.
Major users of Signametrics Switches and DMMs are in automotive
and aerospace industries, education, and research & development.
The SMU4032 is ideal for environments and applications where size,
weight, or mobility requirements rule out traditional bench top
equipment. The SMU4032 is powered off the USB bus, making it ideal
for use with a laptop in mobile environments.
Ease of Use
The onboard controller simplifies programming and minimizes the
overhead typical and book-keeping associated with other switching
modules. It also simplifies on the fly configuration of 2-Wire,
4-Wire, and 6-Wire switching applications. The switching module
is controlled with high-level commands to its on-board controller.
Software
The software included with the SMU4032 contains a simple, quick
and clean installation package. The installation is small, using
less then twenty-five megabytes of disk space, and it does not make
changes to any of your S/W tools, or your computer environment.
and does not put extensive hooks into your operating system or other
installed programs. Once this Plug-and-Play package is installed,
a graphical control panel (seen below) is available to try out your
SMU4032. All of the relays are depected on this virtual front panel,
with additional control functions in the top menu. You have the
option to control the SMU4032 without doing any programming or configuration
straight out of the box.
The SMU4032 supports automated control in a wide variety of programming
languages. Signametrics has no vested interest in which software
package you use. Our support include the following languages C,
C++, C#, .NET, Visual Basic, Mat Lab, Delphi, LabView, LabWindows/CVI,
ATEasy, HPVee, and Microsoft Excel with VBA. Operating systems include
Windows, 32bit and 64bit Linux and INtime®. If you
have questions about software support, or whether signametrics supports
another language or operating system, contact Signametrics support.
SMU4032 GUI Front Panel
SMU4030 General Purpose Switching
For customers who dont need the high accuracy of the SMU4032, the
SMU4030 offers all the features of the SMU4030 but at a lower accuracy,
lower voltage ratings, and a lower price. While less accurate then
the SMU4032, the SMU4030 does have much lower noise then its nearest
comparably priced competitors.
Accessories
For ease of use, three optional modules are available.
The standard Screw Terminal Block is the SMX40,
the Screw Terminal Block with Isothermal structure and block temperature
sensor for use with Thermocouples is the SMX40T,
and the loopback test module is the SMX40L.
For additional information about the SMU4032 or SMU4030, please
contact Signametrics with your questions
via phone or email. |
