®
DIGITAL CONTROL INCORPORATED
Troubleshooting
| Problem/Concern | Causes/Solutions | Section to Consult | |
| 1999 in bottom window of | Transmitter is asleep (wake it up by | “Electrical Interference/ | |
| receiver, indicating no signal | rotating the drill string). | Background Noise Check” | |
| is being received from the | Dead batteries in the transmitter. | in Signal Interference | |
| transmitter. | Section | ||
| Broken transmitter. | |||
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| Transmitter Section | ||
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| Overheated transmitter. | ||
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| Transmitter is out of range of receiver. |
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| A number ranging from 200 to | Receiver is receiving background noise. | “Electrical Interference/ | |
| 700 in bottom window of |
| Background Noise Check” | |
| receiver and transmitter is not |
| in Signal Interference | |
| active. |
| Section | |
| Depth suddenly decreases | Ultrasonics have not been zeroed and | “Ultrasonic Function” in | |
| receiver is being set on the ground for | Receiver Section | ||
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| depth reading. Due to the likelihood of |
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| interference, do not measure with the |
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| receiver on the ground. |
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| Depth after calibration | Depth measurement mode in receiver has | “Changing the Depth | |
| displays as | been inadvertently changed from inches | Measurement Units” in | |
| of | (English) to centimeters (metric). | Receiver Section | |
| Incorrect depth. | Interference. | “Electrical Interference/ | |
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| Ultrasonics improperly set. | Background Noise Check” | |
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| in Signal Interference | ||
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| Bad calibration. | ||
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| Section | ||
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| Weak signal from the transmitter. | ||
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| “Ultrasonic Function” in | ||
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| Receiver is not directly over transmitter | Receiver Section | |
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| when taking a depth reading (trigger must |
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| be released). |
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| Receiver malfunction. |
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| Erratic information on | Interference. | “Electrical Interference/ | |
| receiver. | Low battery in receiver. | Background Noise Check” | |
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| in Signal Interference | ||
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| Moisture inside the equipment. Call DCI | ||
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| Section | ||
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| for information about field methods for | ||
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| Remote Display Section | ||
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| “drying” out the equipment. Moisture can | ||
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| be caused by condensation which occurs |
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| when the equipment is repetitively moved |
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| to and from a warm environment and a |
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| cold one. |
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| Remote display has dashes | Receiver is set on channel 0 (the telemetry | “Changing the Receiver’s | |
| across windows. | is off). | Channel Setting” in | |
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| Receiver is set to a different channel than | Receiver Section | |
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| remote display. |
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| DigiTrak® Mark III Operator’s Manual | 63 |
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