4.1 Passive Locating ................................................................................................................... 12
4.1.1 Detecting Radio Signals .................................................................................................... 12
4.1.2 Detecting Power Signals .................................................................................................... 14
4.2 Active Locating ...................................................................................................................... 14
4.2.1 Direct Connection .............................................................................................................. 14
4.2.2 Signal Clamp ..................................................................................................................... 16
4.2.3 Induction (33 kHz) .............................................................................................................. 17
4.2.4 Detecting Active Signals .................................................................................................... 18
4.3 Taking Depth and Current Measurements ............................................................................ 18
4.4 When to use 33 kHz or 131 kHz............................................................................................ 19
4.5 Metal Locate Mode (vScanM Cover Detector) ...................................................................... 19
4.5.1 Locating a Buried Cover .................................................................................................... 19
4.6 Locating Non-metallic Pipes or Ducts ................................................................................... 20
4.7 Advanced Locating Techniques ............................................................................................ 22
4.7.1 Two Person Sweep ............................................................................................................ 22
4.7.2 “Swamping” an area with Signal (Broad Induction) ............................................................ 22
4.7.3 Nulling Out a Signal (Induction Mode) ............................................................................... 24
4.7.4 Capacitive Coupling ........................................................................................................... 24
4.8 Self-Test/Calibration Check .................................................................................................. 25
4.8.1 The vScan Receiver .......................................................................................................... 25
4.8.2 vScan Transmitter Check................................................................................................... 26
4.9 GPS ...................................................................................................................................... 27
4.10 Creating “Points of Interest” (POI) ......................................................................................... 28
4.11 Bluetooth ............................................................................................................................... 28
4.12 MyvScan ............................................................................................................................... 29
4.12.1 Using MyvScan .................................................................................................................. 29
4.12.2 Navigating around MyvScan .............................................................................................. 30
Glossary .................................................................................................................................................. 32