SeekTech SR-60
Note: If following a moving Sonde, it may be easiest to
"chase" a pole, and then to pinpoint the actual position of
the Sonde only after the Sonde has stopped moving.
Measuring Depth (Sonde Mode)
The SR-60 calculates Measured Depth by comparing the
strength of the signal at the lower antenna to the upper antenna.
Measured Depth is approximate; it will usually reflect the physi-
cal depth when the mast is held vertical and the bottom antenna
is touching the ground directly above the signal source, assum-
ing no distortion is present.
1.
To measure depth, place the locator on the ground, directly
above the Sonde or the line.
2.
Measured Depth will be shown in the lower left hand corner
of the SR-60's display screen.
3.
Measured Depth will be accurate only if the signal is undis-
torted. Measured Depth Display is disabled under clipping
conditions.
Note: Holding the Select Key will display a short count-
down followed by a calculated depth report. This
"Pushbutton Depth", calculated on more signal samples,
will be more precise than the running Depth indication.
(See Depth Warnings on page 17.)
Clipping (Sonde Mode)
Occasionally the Signal Strength will be strong enough that the
receiver will be unable to process the entire signal, a condition
known as "clipping". When this occurs, a warning symbol
appear on the screen. It means that the signal is particularly
strong.
SimulTrace
The SR-60 has a new capability for use in specialized locating
situations which enables you to trace a pushcable and a Sonde
simultaneously. This capability is called SimulTrace. When it is ac-
tivated, the SR-60 will display a tracing line tuned to 33 kHz at
the same time as it seeks on the 512 Hz frequency for a Sonde.
By following the 33 kHz signal, the locator can follow the push-
cable along a pipe, for example, and can simultaneously detect
the Sonde emitting a 512 Hz signal when it is within detection
range.
26
Some modern pushcable and camera systems are equipped to
inject the 33 kHz signal onto the pushcable automatically. If you
are using an earlier pushcable and camera system, you can in-
ject the 33 kHz signal onto the pushcable by using an Inductive
Clamp with several turns of the pushcable looped around the
jaws. Plug the Inductive Clamp into a transmitter set to 33 kHz
and turn it on.
To activate the SimulTrace mode, select it from the Main Menu
frequency list and toggle it into Active Status (it is off by default).
Then, select SimulTrace
Once you have activated the SimulTrace mode, follow the gen-
eral rules of active line tracing to find and follow the pushcable.
When you are within detection distance of the Sonde, the screen
will automatically shift to Sonde mode and will display the equa-
tor and the poles as described above. When SimulTrace is active,
the screen will continue to display a faint tracing line represent-
ing the pushcable on 33 kHz even when it is in Sonde mode. This
will
is especially useful if you are following a pipeline whose location
and bearing is questionable. Note: If no signal from either a line
at 33 kHz or a 512 Hz Sonde can be detected, the magnifying
glass will appear to indicate the unit is seeking for a signal.
Ridge Tool Company
from the menu of frequencies.
Figure 37: Selecting SimulTrace Mode
Figure 38:
SimulTrace Mode:
No-Signal Icon
