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
−− While in Dir Pk mode, find the highest Signal Strength [9] ([8] for 2550 locator).
−− Lower the tip of the receiver to the ground. Twist the receiver left and right while watching the Signal Strength [9] ([8] for 2550 locator).
−− 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 (value that is under the relative current value and in mA units) 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 [9] ([8] for 2550) 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 [3] up or down when the Bar Graph [11] ([10] for 2550 locator) is no longer visible (too little signal) or when the Bar Graph [11] ([10] for 2550 locator) 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 [1] on the receiver.
Step 2. Press Menu/OK [5] (you may have to press Menu/OK [5] 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 [5].
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