Low-noise volt/ohm meter

July 1, 1995
A high-sensitivity nanovolt/micro-ohm meter, the H�A, drastically cuts electronic noise levels with a highly tuned input protection scheme for readings down to 1.3 nV rms. The device provides 7-1/2 digits of resolution, 24-hour dc-volt accuracy, and selectable analog and digital filtering for measurement certainty and repeatability. An integral two-channel programmable scanner provides automatic ratio and difference measurements.

Low-noise volt/ohm meter

A high-sensitivity nanovolt/micro-ohm meter, the H�A, drastically cuts electronic noise levels with a highly tuned input protection scheme for readings down to 1.3 nV rms. The device provides 7-1/2 digits of resolution, 24-hour dc-volt accuracy, and selectable analog and digital filtering for measurement certainty and repeatability. An integral two-channel programmable scanner provides automatic ratio and difference measurements.

Hewlett Packard Co., Palo Alto, CA

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