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The LOOP test can measure a maxi- mum Q of 15. If Q is greater than 15 the tester displays Q>15. To measure the actual value, press the Q button on the keypad to run a separate Q test.
The default frequency at which the LOOP and Q tests run is 50 KHz. It can be changed to any value within the range from 20 KHz to 80 KHz with 1 KHz increment.
R=12.3Ω Q=12.1 L=89.2µH 50KHz
Figure 3
Quality (Q)
ATTENTION
•Disconnect the detector from the loop before running this test.
•DO NOT switch to a different test while the measure- ments are being generated for the current test. Only after the results of the current test are displayed can a different test be performed.
Connect the test leads to the loop. This test requires several seconds to run during which the tester will measure Q at some arbitrary frequency and calculate Q for a
frequency. If a | |||
pressing Q, the default 50KHz setting |
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will be used. Refer to the Set |
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Frequency section on page 7 for | Q=12.1 | @40.5KHz | |
full instructions to enter a different | |||
*Q=14.9 | @50.0KHz | ||
frequency. |
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Both Q results will be presented on the |
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display as shown in Figure 4. The | Figure 4 | |
calculated value is shown on the | ||
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second line and indicated with an *. |
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