Unholtz-Dickie Corporation
The company is comprised of engineers driven by a commitment to build the most advanced vibration test systems in the world. This has evolved into an organization that leads the Vibration Test Industry not only in terms of product innovation & development, but in product performance, reliability, and technical service and support.
- (310) 347-4120
(310) 316-0275 - (203) 265-2690
- info@udco.com
- 6 Brookside Drive
Wallingford, CT 06492
United States of America
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Product
Long Stroke Thrusters
LS-Series
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The LS Series Long Stroke Thruster Test Systems are highly regarded as the industry standard for long stroke transient testing. This equipment is used in the design and production test of automotive airbag sensors by leading suppliers of automotive airbags and associative control modules.
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Product
Command Link
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The APEX Series Controllers offer an optional RS232 Amplifier/Shaker interface and a software command/status panel to operate UD’s newly enhanced SA and SAI Series amplifier/shaker systems. The SA-Command Link provides identical functionality as the standard SA Amplifier front panel switch buttons, LED status indicators and current/voltage meters. In addition, it provides a Power Save selection to automatically power down the UD SAI Amplifier/Shaker system after a test has finished or aborted, and current / voltage limits can be set to abort the test for added system / specimen protection. Now the complete UD test system can be initiated, monitored, and controlled from one convenient location.
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Product
Acquire, Analyze, Import Vibration Data
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Reproducing actual field vibration data is a key feature of the APEX Series Vibration Controllers! It provides four distinct and important choices for analyzing and importing data for creation of random, transient shock, and time replication acceleration control (TRAC) tests. Collecting data and importing the information into the controller is accomplished by using the Signal Analyze/Transient Capture and Data Acquisition modes, or by importing stored ASCII file data. The Import Data Manger provides guidance and extensive editing options for optimizing the new test. The resulting test reference (time or frequency spectrum) can then be performed at the vibration test system.
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Product
Long Stroke Thrusters
6X Thruster Systems
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The SA15-6X-S is regarded as an industry standard Long Stroke Thruster Test System. It is widely regarded as the workhorse for production testing of automotive AIRBAG sensors by leading suppliers of automotive airbags and associative control modules. The SA15-6X-S was designed to produce highly accurate and repeatable acceleration pulses in the horizontal plane; pulses such as classical haversine and half sine waveforms, and for simulating actual crash waveforms imported as ASCII amplitude/time history or as a transient capture. The long stroke capability and powerful SA Series power amplifier can reproduce crash waveforms with velocity changes up to 17 MPH.
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Product
Induct-A-Ring Shaker Systems
T2000 Series
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The T2000 Series of vibration test systems is designed to meet the ever-changing challenges of today’s moderate to extreme level test requirements. The T2000 Series is used by many different industries with a proven track record of unmatched and as yet unchallenged performance and long term reliability.
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Product
Head Expanders
Standard
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These light-weight magnesium head expanders provide reliable and effective solutions for any large, broadband package testing needs.
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Product
Vibration Control & Analysis Systems
APEX Series
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The UD APEX Vibration Controller is now available with up to 32 input channels. Two hardware configurations are offered, the popular APEX SL with 4-16 channels, and the all new APEX PRO with 20-32 channels (both configurable in 4 channel increments). Each unit offers the latest technology in digital signal processing and shaker control algorithms providing real time vibration test control for Random, Sine, Shock, Resonance Dwell, SRS, Random on Random, Multi-tone Sine on Random, Multi-Sine Control, TRAC (time replication acceleration control) testing and Transducer Calibration, as well as extensive data acquisition and analysis. The vibration controller modular software may be initially customized for specific applications or easily expanded in the future without performance penalties. The vibration controller software provides an abundance of comprehensive features that ensure simple, safe, accurate and reliable vibration testing.
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Product
Apex Series Hardware
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APEX SL and APEX PRO advanced architecture incorporates multiple digital signal processors from ADI. The versatile and proven SHARC and Blackfin processors are the industry standard for high performance and power efficiency. This powerful control system hardware set is used exclusively for control loop processing and host communication, assuring accurate real-time control and simultaneous data acquisition, while all graphics related processing is reserved for the host computer’s multi-core processor.
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Product
Long Stroke Thrusters
Seismic Test Systems
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Unholtz-Dickie offers the world’s first all air-cooled, electrodynamic long-stroke testers for telecommunications, earthquake simulation, and transportation applications. Up to 2,300 lbs (1,040 kg) of payload can be supported on a 48x48 inch (1.2 x 1.2 m) footprint on either the slip plate of the horizontal LS12H thruster or the bearing-guided head expander of the vertical LS12V unit. Both are driven by the highly reliable SAI120 SiC amplifier with an integrated switching cabinet for either vertical or horizontal testing. And because it’s an electrodynamic shaker, relatively high frequencies of up to 1,000 Hz can be achieved.
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Product
Electrodynamic Shakers (Highest Force Air Cooled System)
K-Series
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K-Series high performance electrodynamic shaker systems offer 100% air cooling, 3 inch (76 mm) stroke, and feature an output force up to 18,000 pounds (80.1 kN). They are available with a 16 inch (445 mm) or 24 inch (654 mm) armature outer bolt circle, allowing a variety of package sizes and fixture configurations.
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Product
Slip Tables
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Unholtz-Dickie offers three configurations for fully integrated slip table assemblies for vibration testing; the ST Series, HST Series and the CSTA Series. Horizontal slip tables are used for three-axis sequential testing (x, y, z axes) or used when it is necessary to maintain product positioning with respect to gravity.
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Product
Apex Series Software
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An extensive library of APEX Series vibration control software modules is available with an unprecedented number of functions and features to satisfy basic testing needs, as well as advanced applications, data acquisition, and specialized custom testing.
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Product
Instrumentation
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Unholtz-Dickie designs and manufactures a variety of transducer signal conditioners, accelerometers, remote charge preamplifiers, vibration monitors & limiters, transducer testers, buffer amplifiers and other special purpose instrumentation accessories for vibration testing control and measurement.
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Product
Word Report Generator
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The Automatic Report Generating Utility is now included with each new APEX SL or APEX PRO Vibration Control System. This highly desirable feature provides an automatically generated test report in an MS Word document.
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Product
Electrodynamic Shakers
H-Series
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The H-Series provides an intermediate force range of vibration test systems consisting of the SC Series Class D power amplifier with integrated DC field supply, H560B electrodynamic shaker and a remote cooling blower. Systems are provided as complete packages including EMI shielded console with 3-phase line filtering, interface cabling, integrated safety interlocks, and full featured interface panel for the power amplifier. All systems are direct coupled for maximum rated performance and require no transformer reconnections or switching circuits.















