moving in the direction of motor rotation. If the motor speed is too slow, the spots will appear to move in the opposite direction. (3) Speed adjustment. To adjust the speed of a governed motor in a transmitter- distributor, stop the motor and rotate the speed adjusting wheel (fig. 73) slightly; check the speed after each adjustment until the correct speed is obtained. Note. Incorrect motor speed adjust- ment is possible with a tuning fork if the speed is set at any multiple of one fourth of the desired speed. Under this incorrect condition, the target spots also will appear stationary. The experienced technician can recognize the difference in sound made by a motor running at an incorrect multiple. Test transmission of a message to a printer operating at the correct speed is another method used to determine whether a motor is running at any multiple of the desired speed.
DesignationTM 11-2222
EditionMay 1951
StatusSuperseded
Pages220
FunctionComms Signal
CollectionHistoric
Public domain (U.S. Government work)