CCPM Multi Servo Tester Servo Consistency Master for RC Helicopter

CCPM Multi Servo Tester, Servo Consistency Master for RC Helicopters

The digital multi servo tester (ESC, RC consistency, CCPM master, speed control) offers three modes to check servos or ESCs. In manual mode you turn the knob to different speeds and check the reaction time. Neutral mode sends the servo back to the neutral point, and automatic 'window wiper' mode makes the servo swing at the largest angle possible.

The tester can connect to up to three servos at the same time. You can also connect up to three ESCs to test and compare their reaction time.

It is popular for RC helicopters with CCPM swashplates, because being able to drive several servos together helps you check that they respond consistently.

Key features

• Three modes: manual, neutral and automatic.

• Manual mode: a knob to change speed and check reaction time.

• Neutral mode: returns the servo to the neutral point.

• Automatic window-wiper mode: swings the servo at the largest angle.

• Multi-channel: up to three servos or ESCs at once.

• LED indicators: built in.

How a servo tester works

Servos and ESCs are controlled by a repeating pulse whose width tells the device what to do; about 1.5 milliseconds is the centre or neutral position, with roughly 1.0 and 2.0 milliseconds at the ends. A servo tester generates that pulse itself, so you can check a servo or ESC without a receiver, a transmitter or a flight controller.

That makes a tester useful for finding faults. If a servo moves smoothly on the tester but not on your model, the problem is in the receiver, the wiring or the flight controller. If it jitters or stalls on the tester as well, the servo is likely worn or damaged.

Always power the tester within its rated voltage range and keep servos free to move, because a servo pushed against a stop will draw a lot of current and heat up.