ServoTest 2000 Photo (small)

This unit has been developed to enable you to run and check servo operation without the need for the radio system. Microprocessor control gives a means to accurately check centring together with driving the servo either automatically or manually. A bar graph load indicator is provided to check for normal or excessive current drain from the battery. If the servo is mounted in the model, the tester provides a means for checking for the effect of stiff or jammed linkages. End movement indicators (high & low throttle position) enable the tester to be used with the speed controllers used for electric flight.


Four modes settings are provided by a simple push button. These are selected in stages by holding the button down for 3 seconds to change mode. At switch-on (Mode 1), the unit provides an accurate centre setting. After the first 3 second hold (Mode 2), smooth servo movement from end to end is provided. This corresponds to slightly more than standard stick movement with trims. Mode 3 follows a further hold of the button when the unit provides a slow automatic movement from end to end. Mode 4 (manual setting), the button now double up to allow you to position the servo. Each short press moves the servo in discrete steps. Two indicator LEDs are provided to show when end position is reached. This allows you to set a low throttle state when checking electronic speed controllers and drive motors. A further 3 second press returns the unit to mode 1 (centre position).

There are no flying leads from the unit but connecting sockets are provided similar to those on most standard receivers, (standard Futaba, Blue Sanwa & JR). The Rx battery and the servo itself are simply plugged into the connector points in the conventional manner. During operation in any mode, the bar graph display indicates the current being drawn from the battery as the servo moves. It not only highlights stiff or jammed linkages but also is able to indicate possible servo faults where excessive current is being drawn. An awareness of current drain is important in the interests of safety and the endurance of the airborne system.

Used wisely the SERVO~TEST can pinpoint impending problems by showing existing or developing servo faults.

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