Led lights green for continuity and red for shorts.
Coax cable tester schematic.
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The current flows through r6 and r7.
F adapter enables testing of loose cables and installed cable runs.
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Operation of the circuit when we press the test button to s1.
How coaxial cable tester works.
Remote beeps loudly to confirm continuity.
Identify and test for continuity and short faults via audible beep and led indicators.
Then d1 is a conductor outside of the lines r4 and led3.
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If conducted outside of the coaxial cable to the led3 will light up.