78-9000-5020-0 Rev C
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Step 18. Measure the Depth and Current occasionally to verify target path.
Note: In order to measure the Depth and Relative Current accurately, the operator
must pinpoint the target pipe or cable, and the receiver handle should be in-line with
the target path.
− While in Dir Pk mode, find the highest
Signal Strength
[15].
−
Lower the tip of the receiver to the ground. Twist the receiver left and right
while watching the
Signal Strength
.
− When the highest reading is displayed, the handle of the unit is in line with
the target pipe or cable.
Occasionally a signal will appear on adjacent cables or pipes. Compare the
relative and actual current readings over each path to help determine the target
path. Current readings will be significantly less on the adjacent cable/pipe
compared to the target path.
Step 19.
As tracing proceeds, remember that the most powerful signal is near the
transmitter. As the receiver gets farther away from the transmitter the
Signal
Strength
[15] decreases. It may be necessary to readjust the gain as needed; to
be sure there is adequate signal for the receiver to operate. Press the
Gain
[4] up
or down when the bar graph is no longer visible (too little signal) or when the
bar graph is closed (too much signal).
Step 20.
Trace the path until you reach a logical termination point (i.e.: terminal, meter,
cabinet, etc).
11. Locating Active Duct Probes (Sondes)
Step 1. Press
On/Off
[2] on the receiver.
Step 2. Press
Menu/
OK [6] (you may have to press
Menu
twice to toggle to the
LOCATE MENU display).
Step 3. Press
Cable/Pipe
[SK].
Step 4.
Press
Mode
[SK Toggle] to select Special Peak (Spl Pk).
Step 5. Press
Freq
[SK].
Step 6. Press
Active
[SK Toggle] to select the 33kHz frequency (for a 33 kHz Sonde
or ADP (Active Duct Probe)).
Step 7. Press
Menu/
OK [6].
Step 8.
With the receiver handle perpendicular to the conduit path, locate the ADP
position by moving along the path until the strongest signal is found. Adjust
Gain
[4] up or down when the
Bar Graph
remains either fully open or fully
closed.
Step 9. Refer to the ADP operating instructions for further information.