Heathkit IT-5283 - Operation

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OPERATION
‘The Signal Tracer is one of the simplest, most effec-
tive instruments for rapid troubleshooting in radio
and TV circuits. Itisthe “untuned” type which makes
it simple to operate and also means that you will have
to change control settings less often.
This instrument has a number of useful applications
tohalpyou quickly locate and diagnose the trouble in
the circuit under test. You should become familiar
with the different phases of the instrument's opera-
tion so that you will get themaximum benefit from it.
‘The procedures outlined in this section of the Manual
are of a general nature, anddo not roprosent the limite
of its applications. As you use the instrument, you
will develop your own procedures and applications.
NOTE: If you use batteries to power your Signal
‘Tracer, do not turn the level control any higher than
necessary since the higherthe volumeis set, the faster
the batteries will discharge.
RF SIGNAL TRACING
‘When you use the Signal Tracer for RF signal tracing,
turn the probe switch to the (++) position, and the
FUNCTION switch to the SIGNAL TRACER position.
Adjust the LEVEL control no higher than necessary.
NOTE: At near maximum settings of the LEVEL con-
trol, a certain amount of hum is present. This is due to
the high sensitivity of the Signa) Tracer which per-
mits it to pick up stray AC fields.
To illustrate the use of the instrument, a typical radio
schematic ie presented in Pictorial 8-1 so the test
points may be clearly pointed out. Assume that the
Teceiver under test has a specific problem of low vol-
ume. Since the radio is not completely dead, it can be
turned on and tuned to astation. The volume control
should be turned down so the radio's output does not
interfere with the Signal Tracer’s output. The black
test lead of the probe should be clipped to the chassis
or ground circuit of the radio. If theradio istuned toa
PICTORIAL 8-1