Ridgid SR-60 User Manual download pdf (Page 27)

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SeekTech SR-60

that the signal falls away on every side of the

maximum signal location.

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 physical depth when the mast is

held vertical and the bottom antenna is touching the

ground directly above the signal source, assuming 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 undistorted. 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

16).

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

will 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 activated,

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 pushcable along a pipe, for example,

and can simultaneously detect the Sonde emitting a

512 Hz signal when it is within detection range.

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 inject 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

from the menu of frequencies.

Figure 37: Selecting SimulTrace Mode

Once you have activated the SimulTrace mode, follow

the general 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 equator and the poles as described

above. When SimulTrace is active, the screen will

continue to display a faint tracing line representing the

pushcable on 33 kHz even when it is in Sonde mode.

This 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.

Figure 38:

SimulTrace Mode: No-Signal Icon

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Ridgid SR-60 User Manual Page 27

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