™
Page 18 of 65
3 vLoc3-DM Receiver Functions and Operations
Peak with Arrows Response Mode
The “Peak with Arrows” mode operates in the same way as the peak mode. It gives the largest
meter deflection when directly over the line. However, the left/right indication arrows are also
displayed. The arrows indicate the direction to move the receiver to locate the position of the buried
line.
Note:
If the arrows indicated a different position for the cable than the peak bar graph position, this
indicates the possibility of a distorted field. Check by taking a depth reading on the ground and then
lift the cable locator to a known distance such as 1m (3ft). If the depth does not increase by this
amount, it confirms a distorted field, and the data should be treated with caution.
Omni Peak Response Mode
The two double-ended arrows around an icon mean that the line is detectable regardless of locator
blade orientation.
It is very useful for quickly checking an area for buried lines using a grid search as one sweep will
catch all locatable lines. In the classic screen, the Omni feature is available in the “Peak” and “Broad
peak” modes.
Information Pushbutton
(Depth & Current) (Info screen shown with the low frequency sensor
removed)
Log
0
0.78m
233mA
50°42′59.90570′′N
3°26′35.54358′′W
27.50m
0
SD
233mA
A quick press of the “
i
” (information) pushbutton will display the depth and signal current information in a locate screen.
The top left of the display shows longitude/latitude positional information. To the top right is the height above sea level. This
information will only appear when the receiver is paired with a GPS module that is receiving a signal.
It is also possible to save the data to the internal memory; see the "Datalogging” section of this manual.
IMPORTANT
When locating a utility the depth and current measurements should only be taken with the bottom of
the receiver standing on the ground and directly in line with the buried utility.
When in the Omni direction mode
, the orientation is not important.
The accuracy of depth and current readings depends on the quality of the radiated signal being located. If the signal is
symmetrical (undistorted), the depth reading will be accurate within -/+ 5% of the actual depth. If the signal is distorted, depth
readings will be less accurate. When taking depth measurements always hold the receiver at 90° to the ground.
