Signal Tracing Procedures

TM 11-6625-486-14&P

Each procedure outlines the points of

signal

6-9. Signal Tracing Procedures

measurements and the relative value of the ac

signal

Tracing the internally generated signals throughout the

obtained with the vtvm. If the signal is absent, or

differs

frequency meter will help in localizing trouble to a major

appreciable from the ac value indicated, refer

to the

circuit or stage. This method of troubleshooting is the

troubleshooting table.

process of checking for the presence or absence of a

NOTE

signal at both the input and output of circuits or stages.

Since all ac signals in the meter are

Proper use of the troubleshooting table, in conjuction

complex waveforms, a vtvm will not

with the signal tracing procedures, may isolate the

indicate the true rms values.

trouble. To make full use of this information, a separate

signal tracing procedure is given for each major circuit.

6-13