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Active Line Tracing
Active View Area
Bleed over
Checked-Active
Frequencies
Clear Signal
Clipping
Common Bonding
Compound Field
Coupling
Crosshairs
Current Strength
Currently Available
Frequencies
Default
Depth
Glossary - Definitions
A mode of locating using a Line Transmitter to inject a chosen frequency onto a hidden conductor; the
frequency is then detected by the SR-60 to trace the conductor.
The area within the circle in the center of the operating screen, where the Tracing Line or Sonde Pole
and Equator symbols appear.
Coupling of the signal from the target line onto adjacent conductors by any means (resistive, capaci-
tive, or inductive). Bleed-over makes the signal appear to be coming from a different conductor than
the one being traced by setting up a field of the same frequency in a nearby conductor.
A frequency is said to be "Checked-Active" when it has been checked on the main menu; this enables it
to be accessed by the use of the Frequency Key during operation of the SR-60. The "In Use" frequency
is always one of the Checked-Active set.
A clear signal is a field caused by current through a conductor which is strong enough to be detect-
ed unambiguously by a receiver such as the SR-60. Clear signals depend on good conductivity, good
grounding, and adequate current through the target conductor.
The condition of receiving a signal too strong to be processed all at once by the signal processor; in the
SR-60 this condition will cause a warning signal to flash. The signal peaks are too high and are "clipped"
off.
The use of a connector to ground more than one line through the same ground connection. Phone
lines, for example, are often bonded to ground via the electrical service ground line. Common bonding
can be a cause of ambiguous signals in locating.
An electromagnetic field caused by the combination or two or more fields in proximity to each other.
A compound field has multiple lobes and a complex energy pattern which can require analysis to in-
terpret correctly when locating.
The transfer of energy (without direct electrical contact) between two or more cables or components
of a circuit. This can occur through induction, through common bonding, or other means.
A symbol in the center of the Active View Area representing the location of the SR-60, relative to the
detected field.
The calculated level of current based on field strength detected by the Omnidirectional antennas
of the SR-60; expressed approximately in milliamps (mA). An accurate depth measure is required for
accuracy.
Frequencies which have been checked in the Master Frequency Menu are said to be "Currently
Available"; they appear on the Main Menu when the Menu Key is pressed, and can be set to "Checked-
Active" status.
Default values are those settings which the SR-60 uses if the operator does not choose alternative set-
tings; they can be restored from the Information Menu.
See Measured Depth.
Ridge Tool Company
SeekTech SR-60
43
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