Next Generation Calculator Measurements Low Frequency Voltage, Current, Temperature and Time (non-digital) Richard J. Nelson HP Handheld Conference 2016

Why Make Measurements? To determine current drain (Max, Min, & Avg) To determine power required of battery (life) To troubleshoot component failures (bad IC’s) To confirm manufacturer’s specifications (if available) HP Handheld Conferenc 2016

What is Measured? DC Voltages DC currents Resistances Temperature All of the above over time HP Handheld Conferenc 2016

What Instruments are Used? DMMs with accessories Oscilloacopes Specialized devices (e.g. USB devices) HP Handheld Conferenc 2016

Meter Generations – VOMs, DMMs HP Handheld Conferenc 2016

Mooshimeter: No Controls No Display No (1) Indicators HP Handheld Conferenc 2016

Here is what you get. HP Handheld Conferenc 2016

From the PDF File in the References Section HP Handheld Conferenc 2016

Inside the Semi-hard Carrying Case. Three CAT III test probes. Three probe tip to alligator adapters. Mooshimeter. No operators manual. HP Handheld Conferenc 2016

Mooshimeter Advancements Higher accuracy - <1% Lower voltage burden – 20uv /mA = 0.02 ohms. Lower power. Higher resolution – 24 bits, 1 part in 16.7 million or 0.1 ppm. Data recorder on micro sim card. Lower cost (uses cell phone display, wireless). Built in plotting capability. Wireless (Bluetooth). HP Handheld Conferenc 2016

Here are the general specifications. HP Handheld Conferenc 2016

Range Specs HP Handheld Conferenc 2016

The Eight Parameters the Mooshimeter Measures HP Handheld Conferenc 2016

Mooshimeter Electronics Heart The input is a TI ADS1292 32 pin, 24 bit, low power analog front-end for a portable Electrocardiogram System on a Chip. (A) on circuit board. The communications function is a TI CC2540 40 pin Bluetooth transceiver. (B) on circuit board. HP Handheld Conferenc 2016

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Convenience Test Fixture HP Handheld Conferenc 2016

Temperature – Time Plot Example HP Handheld Conferenc 2016

HP Handheld Conferenc 2016

Conclusion The Mooshimeter is about the price of a quality DMM ($120) The Mooshimeter is especially suitable for calculator measurements. The Mooshimeter has about 2,000 users. The documentation is minimal. The software is like Prime, allways underdevelopment. The Mooshimeter is powerful, but it has a steep learning curve. The wireless data logging has lots of field applications (6 Mo. Data) Two AA cells provide the power. Circuit loading is very low. HP Handheld Conferenc 2016

THE END Thank You HP Handheld Conferenc 2016