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A.4
Sonde Functional Check
Checking the function
The purpose of the following procedure is to enable a user to verify the performance of the
Sonde.
To carry out this test the following are required:
• A Locator to detect the signal.
• A work area free of services as illustrated.
1. Inspection
Once the general condition of the Sonde is established the self test can then be used to
indicate the basic unit function and state of the batteries.
2. LED test
Turn on the sonde, the led display will illuminate.
3. Battery check
A dull LED, and lack of detection range will indicate poor battery condition. Use alkaline
batteries.
1. Switch sonde on and activate 33kHz mode.
2. Set Locator to 33 kHz mode and aim at Sonde (see diagram).
3. At 2 m/6.56 ft the Locator must be at maximum.
4. Repeat this with Sonde and Locator in 8 kHz.
DIGICAT 500i/550i, Functional Checks
• Casing
The casing should be free of significant damage, with the
sealing ring and the screw thread intact
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