Operation Manual 19
5.3.3 Applying a transmitter signal
The transmitter signal can be connected, clamped or
induced to the target line in the same way as the signal
for line tracing is applied.
5.3.4 Signal current measurements
Pinpoint the line and confirm the accuracy of the peak
pinpoint with a null pinpoint. Check the locator is directly
over the line, with the antennae at right angles to it and
vertical.
The locator will automatically estimation and display the
depth reading on the LCD.
A signal coupled to a nearby line may distort the accuracy
of the measurement. If the accuracy of the reading is
suspect, sweep the area to check if other nearby lines
are radiating the signal. If other signals are causing
interference, it may be necessary to make the current
measurement at another point along the line.
Both antennae are needed to make a current
measurement and locator accessory antennae such as a
normal clamp or stethoscope cannot be used. Because
current measurement is a function of depth, it is only
available in the locating modes.
Figure 5.7: Current readings using transmitter signals
mA
mA
mA
Summary of Contents for Radiodetection RD7000+
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