HISTORY

DIAMOND J, INC. was incorporated in 1988 as an aircraft engine instrument manufacturer. The three principals (the team) that started DJ have an extensive background in the aircraft business which includes systems engineering, service and support, marketing and operations. This background made them aware that existing analog engine monitoring instrumentation was inadequate in many ways:

Their solution was to process the monitoring signal digitally. Digital process signals retain their accuracy throughout the process. The team sets the basic instrument design criteria as follows:

• To provide an analog and digital presentation. Analog for rate of change digital for high resolution (readability). The analog must have digital accuracy, smooth presentation, ease of scale expansion, and be in concert with the digital display.

• To increase the MTBF over existing instrumentation by several magnitudes

• No re-calibration or adjustment for the life of the instrument.

• Modular design for commonality between instrument types and ease of maintenance.

• To have a positive means of detecting a failure

• To have high tolerance to aircraft voltage variations from low voltage at engine start to high voltage spikes.

• Sunlight readability and easy to convert to NVG

• Rugged design to meet environmental conditions of all types of helicopter and fixed wing aircraft.

• The most important criteria reduces the cost of ownership over existing engine instrument technology.

 

The DJ team had observed that stepper motors were being used in the computer industry as a reliable and cost-effective solution for the precise positioning of components in plotters, printers and disk drives. They reasoned that the reliability and accuracy of aircraft instrumentation could be greatly increased by a design, based on a microprocessor-controlled stepper motor positioning the pointer of the instrument. The simplicity of this design could reduce both the cost of operation and maintenance of an instrument.

In June of 1989, the first prototype instrument was successfully demonstrated aboard a Metroliner III at the AMR Eagle facilities in Nashville, TN. Since then, DIAMOND J, INC. has developed a full line of instruments that are being used by many satisfied customers on various fixed wing and rotor aircraft.

DIAMOND J’s philosophy - BUILD THE BEST PRODUCT - WITH TOTAL SERVICE AND SUPPORT