Filter
Top Products
22 78-8130-6150-0 Rev G
2. Turn the transmitter on by pressing Ohms [T-2]. The continuity of the circuit will be
measured. The results are displayed [T-4] in ohms and as a tone.
− If the continuity of the circuit is very good (the reading on the display is less
than 3K Ω. and a solid tone from the transmitter is heard) all frequencies can
be used to locate. Always use the lowest frequency available (for example, 577
Hz). Lower frequencies are less likely to ‘bleed over’ to other cables in the same
area, and are very good for tracing over long distances.
− If the circuit reads more than 3K Ω., but less than lOK Ω (indicated by a
beeping tone from the transmitter) it will be necessary to use a higher frequency
than 577 Hz in order to locate the cable/pipe.
− If the circuit reads more than lOK Ω., it will be necessary to use an RF signal
such as 33 kHz or 200 kHz.
− If there is no tone and the transmitter indicates that there is an open circuit (OL
in the display) this could be an indication of a poor ground, or an open-ended
cable or pipe. Use one of the higher frequencies available, at high or maximum
output power level. If it is an open-ended cable or pipe, the receiver's response
will decrease suddenly at the site of the clear or severed end.
Note: In the ohms mode, the transmitter can detect voltage as well as ohms. If a low
voltage is detected, the display will alternate between displaying ohms and volts. When
displaying ohms, the flag over the Ω symbol will be visible. When displaying volts, the
flag over the ‘V' will be visible. When the voltage magnitude is sufficient to impair the
accuracy of the ohms measurement, only voltage will be displayed. If the voltage is
AC, a sine wave will be visible on the display [T-4]. If a high AC voltage is detected, a
rapid beeping tone will be heard.
3. Press Trace [T-3] repeatedly until the desired frequency appears on the display.
4. Press Output Level [T-5] to select high or maximum output power level for longer
tracing distances or deep pipe/cable.