Vivax Metrotech 4.04.000170, User Handbook Manual

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7 Glossary
7. Glossary
Active Locate A locate where a transmitter is used to apply a signal to a buried pipe or cable, which is then located by a
receiver tuned to the same frequency.
Active Signal A signal is applied by the locator transmitter to a buried line. Typical, this is a very precise frequency.
Attenuation The reduction of an electromagnetic signal from a pipe or cable.
Clamp (or
Coupler) An accessory used to apply the transmitter signal to an insulated line, removing the need to connect the
transmitter signal directly to a conductor or cable sheath.
Compass Line direction indicator. (Although visually like a compass, this is the only relation to a compass.)
Coupling
The act of signals transferring to lines to which they were not originally applied. The coupling can be “direct”
where the target line has an electrical connection to another line or “induced,” where the signal radiates from
the target line to another line or lines.
Datalog Refers to data stored in the memory of the vLoc3 Locator.
Display The information visually available on the dot matrix display.
Firmware Permanent software programmed into the vLoc3 read-only memory.
.klm File Keynote Markup Language (KML) is a file format used to display geographic data in an Earth browser such as
Google Earth, Google Maps, and Google Maps.
Line A generic term for any buried pipe or cable.
Null
A minimum response to a buried line.
MyLocator3 App created to manage software updates and datalog transfers associated with the vLoc3 range of cable
locators.
Passive Locate A locate where the receiver searches for a wide range of signals that radiate from buried pipes or cables.
These signals come from various sources in the environment and couple to the buried (& overhead) lines.
Typical examples 50/60Hz and LF/VLF radio.
Passive Signals A wide range of signals radiates from buried pipes or cables. These signals come from various sources in the
environment and couple to the buried (& overhead) lines. Typical examples 50/60Hz and LF/VLF radio.
Peak
Maximum response to a buried line.
Pinpoint Using a receiver to identify the exact position of a buried line.
Response The indication that the receiver gives is caused by the signals it is receiving. This can be visual, audio, or
both. Typically, it is displayed on the locator's dot matrix display and audibly from a loudspeaker in the receiver
housing.
Search (sweep) This describes the act of looking for a buried line within a given area.
shapefile The shapefile is a grouping of several files formatted to represent different aspects of geodata:
• .shp — shape format; the feature geometry itself.
• .shx — shape index format; a positional index of the feature geometry to quickly seek forward and backward.
• .dbf — attribute format; columnar attributes for each shape, in dBase IV format.
Sonde A small transmitting coil may be built into a product such as a sewer camera or packaged as a small self-
contained battery-powered transmitter. A receiver tuned to the same frequency can locate the Sonde's position
and hence whatever it is attached to or in. Frequently used for locating sewer cameras and non-metallic pipes.
Target Line The buried pipe or cable to be located.
.txt Text File A .txt file is a standard text document that contains the unformatted text.
Trace Using a locator to follow the path of a buried line.