The MPX-2 can be configured for calibration and test of Low-G accelerometers using gravity as the input excitation. For these applications, the test fixture is fitted with one or more automated flip stages, allowing precise alignment of the device axis of sensitivity with the gravity field.

In addition, the MPX-2 can be configured to interface with industry-standard MEMS multi-site handlers. The ATE is configured to exactly match the capacity of the handling equipment, reducing the overall system cost while maximizing output.

Synchronized Accelerometer Test Systems Deliver Accurate Results

Accelerometer applications usually employ a shaker system to provide the input excitation with typical accelerations ranging from 5G to 250G. Shakers commonly use sinusoidal or pulse (shock) waveforms -- the size of the shaker and input excitation waveform is determined by acceleration amplitude and frequency range, as well as the mass of the test fixture.

The MPX-2 uses a precision arbitrary wavefrom generator to provide the control input signal to the shaker. Synchronized multi-channel digitizers monitor the reference accelerometer(s); system utilities automatically calibrate the shaker with the reference accelerometers, guaranteeing the accuracy and repeatability of test results.

Increased throughput,
minimum excitation time
FocusTest’s MPX-2 instrumentation is capable of capturing all MEMS accelerometers DUT output types, including analog, digital, or both.

The MPX-2 flexible digital sub-system easily accommodates standard digital output protocols, such as SPI, I2C, and Manchester, as well as custom protocols. Provisions for simultaneous capture of analog outputs are provided as well.

Built-in clock and triggering hardware guarantee synchronization between the shaker input and sampling of the reference accelerometer and DUT signals. Sophisticated digital signal processing routines insure that stable and accurate measurements are made with minimum excitation time, resulting in increased throughput and reduced wear on the shaker and other mechanical components.

Synchronized Accelerometer Test Systems Deliver Accurate Results

For more information on custom ATE testing systems, call 781-944-3891 or send email to info@focustestinc.com