ALFA SPID ROTATOR AND CONTROLLER Stereo System User Manual


 
Page 15 of 21 www.alfaradio.ca AlfaSpid Rotator
Alfa Radio Ltd. 11211 - 154 St. Edmonton, Alberta, Canada T5M 1X8
Alfa Radio Ltd. Trouble shouting tips
Before contacting AlfaRadio Ltd. Please make the following tests:.
The following are some trouble shouting tips, if for some reason your
AlfaSpid will not operate correctly.
It is important to confirm correct operation before installing on the
tower. This will rule out any damage that may have been caused by
the shipping company.
Check the Limits - PH and PL settings and rule out overlap.
Simple resistance tests can reveal incorrect or shorted wiring.
Pins 1 and 2 are the motor winding and will have a low resistance.
Typical 2-3 ohms.
Pins 3 and 4 are the sense lines and typically will have either an open
circuit or have about 1200 ohms depending on the status of the reed
switch in the rotator and the length and gauge of used wire.
There should be no conductivity between 1 and 3 or 1 and 4, or
between 2 and 3 or 2 and 4
All lines should have no conductivity to ground.