Vivax Metrotech vLoc-5000, Руководство пользователя

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8 Glossary
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Glossary
Active Locate A locate where a transmitter is used to apply a signal to a buried pipe or cable,
the position of which is then located by a receiver tuned to the same frequency.
Active Signal A signal 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.
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.
Display The information visually available on the dot matrix display.
Line A generic term for any buried pipe or cable.
Null A minimum response to a buried line.
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 a variety of 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 that radiate from buried pipes or cables. These signals
come from a variety of sources in the environment and couple to the buried (&
overhead) lines. Typical examples 50/60Hz and LF/VLF radio.
Peak A 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 which is caused by the signals it is
receiving. This can be visual, audio or both. Typically it is displayed on the
locators 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.
Sonde A small transmitting coil which 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 position of the Sonde and
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