The P-1000 integrates two independently operating tachometers via an on-board microprocessor. The microprocessor continuously computes RPM from timing signals from the magneto's "P-lead" or primary coil grounding leads. No external probes or sensors are required, thus eliminating critical components from the hostile engine environment and providing additional reliability.

Eliminated are the traditional aircraft tachometer problems using mechanical cables or tach-generators, which can exhibit undesirable features: excess weight, oil seal failures, excessive maintenance and repair costs, and inaccuracy.

The use of the two "P-lead" signals provides greater security of continued tachometer operation. If either magneto fails or operates erratically, the P-1000 will continue to deliver RPM using timing information supplied from the remaining magneto.

Continuous comparison of the left magneto's RPM and the right magneto's RPM will yield an error indication if a difference is found. This feature provides early indication of worn or malfunctioning magneto points, floating points or low power output from the magneto coils.

The P-1000 detects the total loss of either magneto signal and turns on an error indicator to inform the pilot. This feature also provides indication of possible "Hot-Mag" or grounded magneto conditions.

Large 1/2 inch Liquid Crystal Display (LCD) characters make the instrument easy to read from all angles. No interpolation of analog dial markings is needed. The P-1000 provides smooth display operation uncommon in digital tachometers. The display is back-lit with a soft, long-life electroluminescent lamp for easy reading at night.

The P-1000 also contains easy to see indicators for Restricted (Red Line), Warning and Normal Operation RPM ranges. Also incorporated into the P-1000 is a highly accurate engine hours clock, and an RPM Trap memory that recalls the highest RPM achieved by the engine, during that flight. Both features are enabled with a touch of a button.

Supplemental Type Certificates (STCs) are available for installation of the P-1000 as a primary tachometer on most single engine aircraft.