RIDGID SeekTech ST-305 - Manual (Page 9)

Ridge Tool Company 
Tools For The Professional TM
SeekTech ® ST-305
Inductive Mode
1. Be sure that the transmitter is positioned correctly
over the line.
Figure 10: Orientation to the Line – Inductive Mode
NOTE: A slight tilt to the axis of the conductor can help
reduce the probability of air-coupling:
Transmitter
Conductor
2. Power the transmitter on. Push the Inductive Mode
switch to induce a signal onto the line without a direct
connection. (A long beep will sound when entering
Inductive Mode.) The Inductive Mode LED will light.
3. The transmitter will emit a series of regular beeps as
long as it is in Inductive Mode.
Figure 11: ST-305 in Inductive Mode at 33 kHz
4. Lower frequencies couple poorly. Therefore, the
ST-305 transmitter in Inductive Mode defaults to
33 kHz. Higher power is usually required for a clear
signal in Inductive Mode. Pressing the power key will
cycle through the three available power levels: 1 kHz,
8 kHz, and 33 kHz.
NOTE: If using the ST-305 in Inductive Mode, be certain to
switch Inductive Mode off if you are going to use the unit in
direct connect mode. Air coupling can create very confusing
signals if you inadvertently have the unit set to Inductive
Mode and are trying to use it in direct connect mode.
Coupling through Air
Figure 12: Near the transmitter, the receiver reads on the
local dipole field around the transmitter.
It is important to set up the transmitter, when using the
Inductive Mode, a good 20 or 30 feet away from the region
where tracing occurs.
Orientation
Guide