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
