Figure 1-42A.Synchro Testers.
Figure 1-42B.Synchro Testers.
These testers are used primarily for locating defective synchros. Although they do provide a method
for zeroing synchros, they should not be relied on without question. It is possible for the calibrated dial to
slip from its proper position, and since the dial is graduated only every 10º, it is difficult to read small
angles with accuracy. Therefore, the synchro tester method of zeroing synchros is potentially less accurate
than those previously described. To zero a TX, CX or TR using a synchro tester, use the following
1. Connect the synchro tester as shown in figure 1-43.