Pacific’s “DAS Brick” brings a brand new look to strain gage and transducer data acquisition. A network appliance, it conditions, amplifies and digitizes the outputs of up to sixteen strain gage, bridge or voltage transducers. The rugged enclosure is designed for installation in wind tunnels, engine test stands and other facilities where it is desired to locate the DAS close to the test article reducing installation and cable cost and improving signal quality and reliability.

The Model 7216, aka DAS Brick, does not sacrifice performance. In fact it features higher accuracy than most systems designed for a laboratory environment. That’s because it is self calibrating taking into account temperature and excitation changes. Accuracy is better than 0.025% over the temperature range 0°C to 50°C. It can be used at higher temperatures by supplying it with compressed air. Up to 256 of the DAS modules may be assembled in a single system of 4096 channels on a LAN.

• Programmable sample rates from 10 Hz to 24 kHz time aligned to within 1 microsecond


• IRIG time stamping


• Programmable strain gage bridge configuration


• Gains 1 to 1,000 calibrated using an internal, NIST traceable reference


• Programmable, -80 dB/octave low-pass filter


• 16 channels in a 5¼” by 7¾” by 12” rugged enclosure


• 28 Volt DC operation

Did you know that PI660, the data acquisition, display and distribution software for Pacific’s Series 6000 products, also supports programming, calibration and acquisition of data for pressure scanner systems? Now a single application program can control, calibrate and acquire data from all sources for wind tunnel and propulsion system tests. Data from the pressure scanners is time correlated to data acquired by the Series 6000 and displayed along with data from other sources. PI660 currently supports the Pressure Systems Series 8400, NetScanner™ and the new DTC Initium™.

About PI660 Data Acquisition & Display Software

Low pass filters in the Series 6000 and 6100 signal conditioning modules determine the time required to perform autozero and autobalance. These functions use successive approximation to arrive at a null setting and can require several iterations, each requiring multiple filter time constants. At very low filter bandwidths this can result in minutes of delay.

The latest version of Pacific’s USB 2.0 Service has been improved to automatically detect each channels filter frequency as programming data is loaded to the 6000 or 6100 systems. Subsequently for any channel with filter frequency less than 4 Hz it switches the filter for that channel to wideband during the Autobalance and Autozero functions. This prevents the long delays previously associated with the low frequency filters and is completely invisible to the operator. To learn more or receive an upgraded USB service please contact a Pacific application specialist or authorized sales representative.

Accessories for Series 6000 and 6100

Contact Pacific Instruments
Phone: 925-827-9010
Email: sales@pacificinstruments.com

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The Pacific Signal Conditioning System at the NASA Ames 40’ by 80' full-scale wind tunnel now known as the National Full Scale Aerodynamics Complex (NFAC) and run by the Air Force’s Arnold Engineering Development Center has had a busy last year acquiring data from test articles on the Mission Adaptive Rotor (MAR) program. The program objective is to determine how active flaps, slats and controls can be used to increase blade loading, and reduce noise and vibration. Rotors that can change shape on the fly offer a dramatic leap in helicopter technology. Early in 2009 Sikorsky and the Army completed wind tunnel testing of an H-60 rotor modified with individual blade control. Prior to that Boeing’s Smart active rotor with piezoelectric-actuated blade flaps was tested and achieved more than 80% reduction in vibration.

About the 6100 Series Transducer Signal Conditioning