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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.

 

Click to enlarge Description SKU Price Click to Purchase
Servo Tester and ESC- motor Driver ST1 $12

 

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Last modified: 08/22/13