Glentek Inc. 208 Standard Street, El Segundo, California 90245, U.S.A. (310) 322-3026
SMA5005 & SMA5015 MANUAL
7. Pulse the input and compare the waveform with figure B.
8. Adjust the Compensation pot (RV3) CCW until the waveform is critically damped or one hook
overshoot. Then proceed to step 10.
9. If the desired waveform cannot be obtained by adjusting the Compensation pot, back off the
Tach Gain pot (CCW) a few turns and repeat step 8.
10. Do not adjust the Tach Gain or Compensation for the rest of the calibration procedure.
11. With battery box still connected at J1-1 and J1-4 for single-ended input (or if your system uses
the Differential input, move battery box to J1-1 and J1-2, and remove micro-shunt at J3 con-
nector), set battery box for a known DC voltage. Adjust the Signal Gain pot (RV1) to obtain
the desired motor velocity.
12. If the motor is rotating in the wrong direction for a given input polarity, remove the power and
reverse both the motor leads and the tach leads.
13. Remove the battery box, and repeat step 3.
14. Calibration complete. Reconnect signal wires.
9
Figure B - Critically damped, One Hook Overshoot, Under and Over damped
