Meter Description; Operation - Extech Instruments CB20 User Manual

Meter Description
Transmitter
1. GFCI Test button
2. Receptacle Test Code Chart
3. Test Indicating LED's
Receiver
4. Battery Compartment
5. ON/OFF/RESET button
6. Low Battery LED
7. Indicating LED
8. Sensing Tip
9. Battery Cover Latch
Operation
Functional Test
Turn the receiver on and check that:
1. The Indicating LED is ON and Red.
2. The Low Battery LED is OFF.
If either of these conditions does not exist, replace the battery
Plug the transmitter into a live socket and move the receiver scanning head over the face of the
transmitter. The frequency of the beeping should become very rapid or change to a continuous
tone. The Indicating LED should turn Green when the scanning head is detecting a signal
"hotspot" (this is good practice for scanning since the indication is similar to finding the correct
circuit breaker at the panel.)
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