Metrotech MetroMark i5000 Series, Руководство по эксплуатации

Страница: 14 / 62

4 | i5000™ MetroMark™ Manual
Doc. No.: R12015 Metrotech Copyright © 2008
2) Select the Frequency
Press the Freq soft key to select the desired locating frequency. If the receiver detects a transmitter signal, the
numerical field strength, peak bar graph, and the null needle respond to movements of the receiver.
3) Determine the Center Line Position
Use the bar graph and signal strength readings to first determine the maximum or peak field strength. Then use
the left/right directional arrows to center the line and confirm the position of the target conductor.
NOTE
In a distorted field, typically in a congested area, it is common for the peak signal and
null needle to not agree in the centerline.
4) Observe the Guidance Compass
The guidance compass indicator provides additional information about the locate:
The direction of the signal is indicated by the orientation of the orange arrow inside the guidance
compass indicator. A FORWARD pointing arrow indicates that the receiver detects a signal flowing
away from the transmitter. A DOWNWARD pointing arrow means that the signal is a return signal
flowing back towards the transmitter.
Changes in the direction of the line relative to the orientation of the receiver are indicated by the sig -
nal direction arrow moving away from the North or South position.
The presence of bleedover signals is indicated by the RED color filling the inside of the guidance
compass indicator.
61.3
dB
491Hz
Auto
Freq Gain Menu Vol
GUIDANCE
COMPASS
SIGNAL SELECT
Figure 2-3 Operational Interface
5) Perform Depth and Current Measurements
Press the lower section of the navigation button to compute a depth and current measurement.
Depth and current estimates are displayed. Thereafter, the receiver returns to the locating mode.
•
•
•