Detector

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If there is bad connection, the tester displays a message as shown in Figure

7.Make sure that the test leads are properly connected. If the leads are

connected to the loop and the message is still present, it means that Q of the loop is too low to generate the oscilla- tion or the inductance is out of range. This can be verified by performing the LOOP test.

dL/L:

No loop found

Figure 7

In this mode, the the tester will shut off automatically after 45 seconds if no buttons are pressed.

ATTENTION

•Verify the Loop is connected to detection system before running this test.

•Disconnect the detector from the loop before running a LOOP, Q, or ∆ L test.

The purpose of this test is to measure the operating parameters of the working loop while it is connected to the detector.

Connect the test leads to the loop and press the DETECTOR push-button. During this test the measurements are constantly updated displaying the type of the operating mode, peak-to-peak voltage, and the operating frequency as show in Figure 8. If the signal is not present or signal is weak, the tester displays “No Signal” message as show in Figure 9.

In this mode, the the tester will shut off automatically after 45 seconds if no buttons are pressed.

Scan. mode:

7.4V @F=34.1KHz

Figure 8

No signal -.-V @F=--.-KHz

Figure 9