5.
Disconnect the black cable from the negative (-) terminal.
The transmitter should emit a pulsed tone.
☞
If for any of these tests no output or a significantly different output
is displayed, return the trace rod for service.
9.5
Functional Check of the Sonde
Before you carry out any tests, it is vital to check the status of the unit, its bat-
teries and its basic functionality. To achieve this, carry out the following proce-
dure:
1.
Inspect the general condition of the sonde.
•
The casing should be free of significant damage.
•
The sealing ring and the screw thread should be intact.
2.
Once the general condition of the sonde is established, per-
form the LED test
.
Turn on the sonde. The LED indicator should light up.
3.
Perform a Battery check.
If the LED indicator lights up faintly or if the sonde does not transmit
a signal, the batteries are probably low. Replace the batteries if nec-
essary.
The purpose of the following procedure is to verify the performance of the
sonde.
☞
For this procedure, the following system components are required:
•
A locator to detect the signal of the sonde.
•
A work area free of utilities (as illustrated).
2 m/6.56 ft
5 m/16.4 ft
5 m/16.4 ft
0016948_001
1.
Set up the sonde for use at 33 kHz.
2.
Turn on the locator. Set the locator to 33 kHz.
3.
Aim the locator foot at the sonde.
☞
At a distance of 2 m/6.56 ft, the signal strength indicators
should display a peak reading.
4.
Set up the sonde for use at 8 kHz.
5.
Turn on the locator. Set the locator to 8 kHz.
6.
Aim the locator foot at the sonde.
☞
At a distance of 2 m/6.56 ft, the signal strength indicators
should display a peak reading.
Checking the function
Checking the
performance
56
Functional Checks
