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a very small amount of signal will be transferred to the cable but there should be enough to trace the
cable for a short distance.
4.8
Self-Test/Calibration Check
4.8.1
The vScan Receiver
The vScan has been designed to be a robust and stable avoidance tool. However, as with all safety
equipment it is advisable to check the functionality of the equipment. As the receiver is the signal processing
part of the kit Vivax-Metrotech has designed into the equipment a calibration and functionality check.
Results are automatically recorded within the equipment and can be used in conjunction with MyvScan to
print out calibration certificate and to store a complete self-test and calibration history of the receiver.
Method:
1. Firstly identify an area that is free from cables and erroneous signals such as computer monitors,
extraction fans, fluorescent lighting etc. If in doubt, switch to each mode and with the sensitivity set to
maximum, check that the background noise is below 10% of full scale deflection. Also check that there
are no activated vScan transmitters in the vicinity.
2.
Switch on the receiver and press the “i” button until the “Menu” screen appears.
3. Use the paddle to navigate down to the
“Cal Check” option. Press the “i” button to initiate the test.
4. While the unit is performing the test the following screen may appear. (Some models do not have this
screen but the process is the same)
