Instructions for Using a
Servo/Motor Tester
Servo
testers are very useful for exercising your servos and Electronic Speed Control
(ESC) without the need to turn on your transmitter, and you do not even need
your receiver. The servo tester will put out a signal just like the signals
normally sent by your receiver to the servos or ESC. The knob on the servo
tester will change the signal just like moving your transmitter stick would
change the signal going to a servo or ESC.
To use the
tester to operate an ESC and motor,
the only plug connected to the tester is the plug from the ESC that normally
goes to the receiver. That plug can be inserted on the pins labeled S1 or
S2. (It makes no difference which one you use.) The plug should be installed
with the signal wire (normally white or orange) on the top pin, labeled Servo.
That will put the negative wire (normally colored black or brown) on the bottom
pin (closest the circuit board), and the positive (red) wire will be on the
center pin. Set the tester knob on 0, and connect the ESC to motor leads.
When you connect the battery to the ESC it will power up. It should react the
same way does when powered up using the radio gear with the throttle stick in
the minimum power position. You can now spin up the motor by turning the servo
tester knob. No receiver or transmitter is needed. This is a great way to test
motors on the bench.
To use the
tester to evaluate a servo or adjust a control linkage,
connect a battery to the set of pins labeled BATT. The red or plus wire
should connect to the center pin, and the black lead should connect to the lower
(with the tester knob up) pin. That pin is closest to the circuit board when
looking at the pin end of the tester. Plug a servo into the pins labeled S1
or S2. The plug should be installed with the signal wire (normally white or
orange) on the top pin, labeled Servo. That will put the negative wire
(normally colored black or brown) on the bottom pin (closest the circuit board),
and the positive (red) wire will be on the center pin. Set the tester knob on 5
(mid position) and when the servo tester is powered up the servo will go to
center position.