RIDGID Metal Detector User Manual

Pipe, Cable and Sonde Locator

• Français – 33

• Castellano – pág. 67

WARNING!

Read this Operator’s Manual carefully before using this tool. Failure to understand and follow the contents of this manual may result in electrical shock, fire and/or serious personal injury.

NaviTrack

II Operator’s Manual

Patent Pending

Ridge Tool Company

Table of Contents

Recording Form for Machine Serial Number and Software Version .........................................................................................................1

General Safety Information

Work Area Safety........................................................................................................................................................................................2

Electrical Safety ..........................................................................................................................................................................................2

Battery Precautions.......................................................................................................................................................................................

Personal Safety...........................................................................................................................................................................................2

NaviTrack II Use and Care..........................................................................................................................................................................3

Service ........................................................................................................................................................................................................3

Specific Safety Information

Important.....................................................................................................................................................................................................3

Specifications and Standard Equipment

Specifications..............................................................................................................................................................................................3

Standard Equipment ...................................................................................................................................................................................4

Optional Equipment.....................................................................................................................................................................................4

Frequencies ................................................................................................................................................................................................4

Icon Legend ................................................................................................................................................................................................5

NaviTrack II Components ..............................................................................................................................................................................6

Introduction to the NaviTrack II

Installing/Changing Batteries ......................................................................................................................................................................7

Folding Mast................................................................................................................................................................................................7

NaviTrack II Modes .....................................................................................................................................................................................7

Display Elements ........................................................................................................................................................................................7

Set Up .......................................................................................................................................................................................................10

Sonde Locating

Location Methods......................................................................................................................................................................................13

Tilted Sondes ............................................................................................................................................................................................14

Measuring Depth (Sonde Mode)...............................................................................................................................................................14

Clipping (Sonde Mode) .............................................................................................................................................................................14

Line Tracing

Active Line Tracing....................................................................................................................................................................................16

Passive Line Tracing.................................................................................................................................................................................18

Operating Tips for Active Line and Passive Line Tracing .........................................................................................................................19

Measuring Depth (Tracing Modes)............................................................................................................................................................20

Clipping (Tracing Modes)..........................................................................................................................................................................20

Menus and Settings .....................................................................................................................................................................................20

Optional Features within the Display Elements Menu...............................................................................................................................22

Frequencies Selection Control .................................................................................................................................................................23

Information Screen and Restoring Defaults ..............................................................................................................................................24

Menu Tree.................................................................................................................................................................................................25

A Better Way of Locating ............................................................................................................................................................................25

Advantages of the Omnidirectional Antenna.............................................................................................................................................26

Proximity Signal ........................................................................................................................................................................................27

“Informational” Locating ............................................................................................................................................................................27

Getting the Most Out Of the NaviTrack II

More on Informational Locating.................................................................................................................................................................27

Notes on Accuracy....................................................................................................................................................................................28

NaviTrack II Maintenance Instructions

Transportation and Storage ......................................................................................................................................................................29

Installing/Using Accessories .....................................................................................................................................................................29

Maintenance and Cleaning .......................................................................................................................................................................29

Locating Faulty Components ....................................................................................................................................................................29

Service and Repair.......................................................................................................................................................................................30

Glossary – Definitions

.................................................................................................................................................................................30

Troubleshooting...........................................................................................................................................................................................32

Lifetime Warranty ..........................................................................................................................................................................Back Cover

NaviTrack®II

Pipe, Cable and Sonde Locator

NaviTrack

Patent Pending

NaviTrack®II

Record Serial Number below and retain product serial number for your records. See information screen for serial number and software version.

Serial No.

Software Version

• Gloves should always be worn for health and safety reasons. Sewer lines are unsanitary and may con-

tain harmful bacteria and viruses.

• Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations.

• Use safety equipment. Always wear eye protection. Dust mask, non-skid safety shoes, hard hat, or hearing protection must be used for appropriate conditions.

• Use proper accessories. Do not place this product on any unstable cart or surface. The product may fall causing serious injury to a child or adult or serious damage to the product.

• Prevent object and liquid entry. Never spill liquid of any kind on the product. Liquid increases the risk of electrical shock and damage to the product.

• Avoid Traffic. Pay close attention to moving vehi-

cles when using on or near roadways. Wear visible clothing or reflector vests. Such precautions may

prevent serious injury.

NaviTrack II Use and Care

• Use equipment only as directed. Do not operate the NaviTrack II unless the owner’s manual has been read and proper training has been completed.

• Do not immerse the antennas in water. Store in a dry place. Such measures reduce the risk of electric shock and instrument damage.

• Store idle equipment out of the reach of children and other untrained persons. Equipment is dangerous in the hands of untrained users.

• Maintain the instrument with care. Properly main- tained diagnostic instruments are less likely to cause injury.

• Check for breakage of parts, and any other con-

ditions that may affect the NaviTrack II’s operation.

If damaged, have the instrument serviced before using. Many accidents are caused by poorly maintained tools.

• Use only accessories that are recommended by the manufacturer for the NaviTrack II. Accessories that may be suitable for one instrument may become hazardous when used on another.

• Keep handles dry and clean; free from oil and grease. Allows for better control of the instrument.

• Protect against excessive heat. The product should be situated away from heat sources such as radiators,

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General Safety Information

WARNING! Read and understand all instructions. Failure

to follow all instructions listed below may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS!

Work Area Safety

• Keep your work area clean and well lit. Cluttered

benches and dark areas may cause accidents.

• Do not operate electrical devices or power tools in

explosive atmospheres, such as in the presence of flammable liquids, gases, or heavy dust. Electrical

devices or power tools create sparks which may ignite the dust or fumes.

• Keep bystanders, children, and visitors away while operating a tool. Distractions can cause you to lose control.

Electrical Safety

• Do not operate the system with electrical components removed. Exposure to internal parts increases

the risk of injury.

• Avoid exposure to rain or wet conditions. Keep bat- tery out of direct contact with water. Water entering electrical devices increases the risk of electric shock.

• Do not probe high voltage line.

Battery Precautions

• Use only the size and type of battery specified. Do not mix cell types (e.g. do not use alkaline with rechargeable). Do not use partly discharged and fully

charged cells together (e.g. do not mix old and new).

• Recharge batteries with charging units specified by the battery manufacturer. Using an improper charger can overheat and rupture the battery.

• Properly dispose of the batteries. Exposure to high temperatures can cause the battery to explode, so do not dispose of in a fire. Some countries have regulations concerning battery disposal. Please follow all applicable regulations.

Personal Safety

• Stay alert, watch what you are doing and use common sense. Do not use diagnostic tool while tired or

under the influence of drugs, alcohol, or medications. A moment of inattention while operating tools may result in serious personal injury.

NaviTrack®II

Ridge Tool Company

heat registers, stoves or other products (including amplifiers) that produce heat.

Service

• Diagnostic instrument service must be performed only by qualified repair personnel. Service or main-

tenance performed by unqualified repair personnel could result in injury.

• When servicing a tool, use only identical replace- ment parts. Follow instructions in the Maintenance Section of this manual. Use of unauthorized parts or failure to follow maintenance instructions may create a risk of electrical shock or injury.

• Follow instructions for changing accessories. Accidents are caused by poorly maintained tools.

• Provide proper cleaning. Remove battery before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

• Conduct a safety check. Upon completion of any ser- vice or repair of this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.

• Damage to the product that requires service. Refer servicing to qualified service personnel under any of the following conditions:

• If liquid has been spilled or objects have fallen into

product;

• If product does not operate normally by following the

operating instructions;

• If the product has been dropped or damaged in

any way;

• When the product exhibits a distinct change in per-

formance.

CAUTION

Remove batteries entirely before shipping.

If you have any questions regarding the service or repair of this machine, call or write to:

Ridge Tool Company Technical Service Department 400 Clark Street Elyria, Ohio 44035-6001 Tel: (800) 519-3456 E-mail: TechServices@ridgid.com On the Web: www.ridgid.com or

www.navitrack.com

In any correspondence, please give all the information shown on the nameplate of your tool including model

number and serial number and software version

(See

Figure 1)

Specific Safety Information

WARNING

Read this operator’s manual carefully before using the NaviTrack II. Failure to understand and follow the contents of this manual may result in electrical shock, fire and/or severe personal injury.

Call the Ridge Tool Company, Technical Service Department at (800) 519-3456 if you have any questions.

Important Notice

The NaviTrack II is a diagnostic tool that senses electromagnetic fields emitted by objects underground. It is meant to aide the user in locating these objects by recognizing characteristics of the field lines and displaying them on the screen. As electromagnetic field lines can be distorted and interfered with, it is important to verify the location of underground objects before digging.

Several utilities may be underground in the same area. Be sure to follow local guidelines and one call service procedures.

Exposing the utility is the only way to verify it’s existence, location and depth.

Ridge Tool Co., its affiliates and suppliers, will not be liable for any injury or any direct, indirect, incidental or consequential damages sustained or incurred by reason of the use of the NaviTrack II.

Specifications and Standard Equipment

Specifications

Weight w/batteries.........5.2 lbs. (2.35 kg.)

Weight w/o batteries......4.5 lbs. (2.04 kg.)

Dimensions:

Length ...........................15.0″ (38.1 cm.)

Width .............................7.2″ (18.3 cm.)

Height (Extended) .........31.1″ (78.9 cm.)

Height (Closed) .............19.1″ (48.5 cm.)

Power Source................4 C-size batteries, 1.5V

Alkaline (ANSI/NEDA 14A, IEC LR14) or 1.2V NiMH or NiCad rechargeable batteries

Power Rating:................6V, 550mA

NaviTrack®II

Ridge Tool Company

Signal Strength..............Non-linear in function. (2000

is 10x higher than 1000, 3000 is 10x higher then 2000, etc.)

Operating Environment

Temperature................-4°F to 122°F (-20°C to 50°C)

Humidity ......................5% to 95% RH

Storage Temperature .....-4°F to 140°F (-20°C to 60°C)

Default Settings The default settings for the locator are:

• Measured Depth units = Feet & Inches,

• Volume = 2 (two settings above mute),

• Backlight = Auto

• 512 Hz (Sonde) Default Mode

Optional Settings The optional settings for the locator are:

• Measured Depth units = Meters,

• Volume = 0 (mute) to 5,

• Backlight = On, Off

• Mode: Active Line Trace, Passive Line Trace

Standard Equipment

Optional Equipment

NaviTrack®II

Nominal and Exact Frequency Values (NaviTrack II)

Sonde 16 Hz 16

512 Hz 512 640 Hz 640 850 Hz 850

8 kHz 8192 16 kHz 16384 33 kHz 32768

Active Line 128 Hz 128

Trace 1 kHz 1,024

8 kHz 8,192 33 kHz 32,768

200 kHz 200000 262 kHz 262,144

Passive Line 50 Hz

Trace (9th harmonic) 450

60 Hz

(9th harmonic) 540 Hz

(European) 93 kHz 93,696.0

93 kHz -B 93,622.9

(See note on 93 kHz Frequencies on page 17.)

Catalog

No. Description

14818 NaviTrack Line Transmitter – 10 Watt 20168 NaviTrack Brick Transmitter – 5 Watt 20503 Inductive Clamp (4.75″) 16728 Remote Transmitter (Sonde) 19793 Float Sonde (Package of 2) 12543 Surface Markers and Clip

Catalog

No. Description

96967 NaviTrack II Locator 12543 Surface Markers and Clip 22388 Molded Carrying Case

— Operator’s Manual (Downloadable @ www.navitrack.com) — Quick-Start Guide (Downloadable @ www.navitrack.com)

Frequencies

Default Frequencies

Sonde ........................512Hz

Active Line Trace.......128Hz 1kHz, 8kHz, 33kHz,

262kHz (European: 93kHz)

Passive Line Trace....60Hz (9th)

Optional Frequencies

Sonde ........................16Hz, 640Hz, 850Hz, 8kHz,

16kHz, 33kHz

Active Line Trace.......200kHz

Passive Line Trace....50Hz (9th)

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NaviTrack®II

Icon Legend

Display Icons

Keypad Icons

Sonde Frequency

Active Trace Frequency

Proximity Signal

Signal Strength

Battery Level

Measured Depth/Distance

Signal Angle Indicator (Sonde Mode)

Signal Angle Indicator (Trace Mode)

Pole Icon

Sonde Equator Line

Up Key – Menu Navigation

Select Key – Menu Select Sonde Mode: Force Depth/Re-center Audio Line Trace Mode: Force Map Display on if Signal Strength is centered, Re-center Audio

Power ON/OFF Key

Menu Key

Frequency Key

Sound Key

Audio Level

Down Key – Menu Navigation

Menu Icons

Low Battery Warning (Flashing)

Level Pointer (Signal Strength)

Tracing Line (Lower Antenna Signal)

No Trace Signal Present

No Sonde Signal Present

Water Mark (Signal Strength)

Distortion Line (Upper Antenna Signal)

Factory Default Reset

Menu Check Box

Signal Clipping

Tools Menu

Backlight Settings

Screen Contrast Adjust

Screen Setup

Menu Setup

Information Screen

Auto Exit Menu Timeout Counter

Exit/Go Up One Level (Press Menu Key)

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NaviTrack®II

Figure 3

NaviTrack II Components

Battery Compartment

Serial Number Label

USB Connector

Serial Port Connector

NOTE: USB/Serial Ports are

for loading new software

Antenna Mast

Surface Markers

Upper Omnidirectional Antenna Node

Folding Joint

Lower Omnidirectional Antenna Node

Figure 2

Figure 1

Display Screen

Keypad

Handle

Speaker

Headphone Jack

Folding Mast Snap

Figure 5 – Folding Antenna Mast and Release Button

NaviTrack II Modes

The NaviTrack II operates in three distinct modes. They are:

1. Sonde Mode, used for locating Sondes in pipes, conduits, or tunnels that are non-conductive or cannot otherwise be traced.

2. Active Line Trace Mode, used when a chosen frequency can be put onto a long conductor using a line transmitter, for locating conductive pipes, lines or cables.

3. Passive Trace Mode, used for tracing electrical lines that are already carrying 60 Hz current (U.S.) or 50 Hz current (Europe).

Note that the two Tracing modes, Active and Passive, are identical except for the frequencies used. No transmitter is used in Passive Trace mode.

Display Elements

Beginning operators or experienced operators can use the NaviTrack II with equal ease. While the NaviTrack II offers advanced features that make the most complex locate easier, many of its features can be turned off or hidden to make the display simpler when doing basic locating in uncomplicated situations.

The “basic features” of the NaviTrack II are on by default. They can be customized easily to suit the user’s requirements. The use of the various elements displayed is covered in separate later sections of the manual.

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NaviTrack®II

Introduction to the NaviTrack II

Installing/Changing Batteries

To install batteries into the NaviTrack II turn the unit over to access the battery compartment. Turn the knob on the battery cover counter-clockwise. Pull straight up on the knob to remove the door. Insert the batteries as shown on the inside decal and make sure they drop to full contact.

Fit the door into the case and turn the knob clockwise while lightly pressing down to close. The battery cover can be installed in either orientation.

Figure 4 – Battery Case

When the NaviTrack II is powered on, it takes a few seconds to check the batteries. Until then the battery level will show as “empty”.

Do not allow debris or moisture into battery compartment. Debris or moisture may short the battery contacts, leading to rapid discharge of the batteries, which could result in electrolyte leakage or risk of fire.

Folding Mast

To begin operation, unfold the antenna mast and lock the folding joint into place. When locating is complete, press the red release lever to fold the antenna mast for storage.

NOTE! Avoid dragging the lower antenna node on the

ground while locating with the NaviTrack II. It may cause signal noise which will interfere with results, and may eventually damage the antenna.

CAUTION

Release Button

IMPORTANT! Do not snap or whip the NaviTrack II

mast to open or close it. Open it and close it by hand only.

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NaviTrack®II

Common Display Elements

Figure 6 – Common Display Elements

The display screen in Sonde, Active Line Trace or Passive Line Trace mode will show the following features:

Signal Angle Indicator – Angle toward the

field’s center graphically displayed; numeric value displayed below the graphic.

Battery Level – Indicates level of battery power.

Measured Depth/Distance – Displays the mea-

sured depth when receiver is touching the ground directly over signal source. Displays computed distance when the antenna mast is pointed at signal source in some other manner. Displays feet/inches (U.S.A. default) or meters (European default).

NOTE! Measured Depth is a

computed

number which may vary from the physical depth or distance depending on field strength and distortion.

Frequency – Shows current frequency setting in hertz or kilohertz.

Mode – Icon for Sonde , Line Trace , or Passive Line Trace mode.

+ Crosshair (Map Center) – shows your position relative to the target center.

Active View Area – The area within the circle in the center of the operating screen, in which Sonde and Pole icons, Tracing and Distortion lines appear.

Display Elements: Sonde Mode

Figure 7 – Display Elements: Sonde Mode

Signal Strength – Strength of signal as sensed by

the lower Omnidirectional antenna. | | Pipe Direction – Represents the approximate di-

rection of the pipe in which the sonde is lying.

Sonde Icon – Appears when approaching the loca-

tion of a Sonde.

Equator – Represents the mid-line of the

Sonde’s field perpendicular to the axis of the Poles.

(See on page 14.)

Pole Icon – Represents the location of either of the

two Poles of the Sonde’s dipole field.

(See on page 12.)

Display Elements: Active Line Trace Mode

Figure 8 – Display Elements (Line Trace Mode)

In Active Line Trace Mode the following features will also be displayed:

Proximity Signal – A numerical indication showing

how close the signal source is to the locator. Displays from 1 to 999 (Line Trace modes only).

Signal Strength – Strength of signal as sensed by

the lower Omnidirectional antenna.

Distortion Line (Upper Antenna Signal) – shows

the apparent direction of the field as detected at the upper antenna. If out of alignment with the Tracing line, indicates a distorted field.

Signal Angle Indicator

Active View Area

Crosshair (Map Center)

Measured Depth/Distance

Battery Level

Numeric Horizontal Angle Indicator

Mode Frequency

Pole Icon

Pipe Direction

Sonde Icon

Equator

Signal Angle Indicator

Proximity Signal

Signal Strength

Distortion Line (Dashed)

Tracing Line (Solid)

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NaviTrack®II

Tracing line (Lower Antenna Signal) – shows the

apparent direction of the field as detected at the lower antenna.

Display Elements: Passive Trace Mode

The screen elements in Passive Trace Mode are the same as those seen in Active Line Trace mode.

NOTE! Mode is determined by the type of target source

(Sonde or Line). For example, selecting the 512 Hz frequency from the Sonde mode section of the frequency menu puts the SR-20 into Sonde mode. (A frequency must be selected from the correct category if it appears in more than one category, such as 33 kHz).

Default Frequencies

The Master Frequency Menu contains a large set of frequencies, but only some of these are made currently available. They are made “Currently Available” by checking them in the Master Frequency Menu,

as described on

page 23

. The frequencies which are currently available ap-

pear on the Main Menu when the Menu Key is pressed. “Currently Available” frequencies can be checked in the

Main Menu, in which case they will appear when using the Frequency Key. If they are unchecked in the Main Menu, they will not appear when using the Frequency Key to cycle through frequencies. Frequencies which appear in the Main Menu and are checked for activation are called “Checked-Active”.

Frequencies that are “Checked-Active” can be cycled through simply by pressing the Frequency Key

(See Fi-

gure 9)

. A frequency chosen by pressing the Frequency

Key becomes the “In Use” frequency. Currently available frequencies in default setting include:

Sonde Mode

• 512 Hz

Active Line Trace Mode

• 128 Hz

• 33 kHz

• 1 kHz

• 8 kHz

• 262 kHz

Passive Line Trace Mode

• 60 Hz (Power)

The use of these features is described in the Sonde Locating, Active Line Tracing, and Passive Line Tracing sections.

Keypad

Figure 9 – Keypad

Power ON/OFF – Powers NaviTrack II ON. Powers

the NaviTrack II down after a 3-second countdown. The countdown can be interrupted before shutdown by pressing any key.

Up and Down Arrows – Used for locating choices

during menu selection; used for setting the Volume Control when the Sound Key has been pressed.

Select Key – Used to make a choice during Menu

selection; in normal operation, used to force a Measured Depth reading and re-center audio tone. Can be used to force a depth display. Sets volume level in Sound menu.

Menu Key – Used to display a “tree” of choices in-

cluding frequency selections, display element choices, brightness and contrast, and restoring default settings. Within a menu, press to move up one level.

Volume Key – Used to raise or lower the volume

setting; will cycle the volume from current setting by steps, increasing to maximum and then off. Pressing the volume key opens the volume control panel if it is closed, and closes it if it is open. Volume can also be raised and lowered using the Up and Down Keys when in the Volume control panel.

Frequency Key – Used to set the “In-Use” frequency

of the NaviTrack II from the set of checked-active frequencies. The list of frequencies that have been set to Checked-Active status can be modified via the Menu Key. Frequencies are grouped into three sets: Sonde Frequencies ( ), Line Trace Frequencies ( ) and Power Frequencies ( ). Each press of the Frequency Key cycles to the next Checked-Active frequency.

Light Sensor – Detects light levels and controls the LCD backlight, which is set to come on under fairly dark conditions. The backlight can be forced on by covering the sensor with your thumb.

Volume Control Key

Down Key

Menu Navigation

Menu Key

Select Key

Menu Item Select

Up Key Menu Navigation

Frequency Key

Light Sensor

Power ON/OFF Key

Operation Time

Using alkaline cells, typical operation time is from about 12 to 24 hours depending on sound volume and how often the backlight is on. Other factors that affect the operation time will include chemistry of the battery (many of the new high performance batteries, such as the “Duracell®ULTRA” last 10% - 20% longer than conventional alkaline cells under high demand applications). Operation at lower temperatures will also reduce battery life.

The NaviTrack II display can also show random symbols when the battery power is too low to drive the internal logic circuits correctly. This is remedied by simply putting fresh batteries into the unit.

To preserve battery life the NaviTrack II will automatically shut down after one hour of no key presses. Simply turn the unit on to resume use.

Low Battery Warning

When the battery gets low, a battery icon will appear in the map area on the screen. This indicates that the batteries need to be changed and that the unit will soon shut down.

Figure 10 – Display Low-Battery Warning

Just before complete shut down, there will be a non-interruptible power down sequence.

NOTE! Voltage on rechargeable batteries may some-

times drop so quickly that the unit will just shut down. The unit will turn off and restart. Just replace the batteries and turn the unit back ON.

Starting Up

After pressing the Power Key on the keypad, the RIDGID®logo displays, and the software version number will appear on the left of the screen.

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Figure 11 – Start-up Screen

In the European version, the screen will include a “CE” logo:

Figure 12 – European Start-up Screen

Make a note of the software version in the box on

page 1

. If technical support from Ridge is needed it will be helpful to have it available.

Set Up

Once the NaviTrack II is up and running, the next step is to set up the frequencies that match the Sonde, transmitter, or line to be located.

Each frequency is selected for use by choosing it from a list in the Main Menu. If the box on the Main Menu for that frequency is checked, the frequency is in Checked-Active status.

Checked-Active frequencies are already selected for use and appear in sequence by pressing the Frequency Key . (For example, the Sonde frequency of 512 kHz is available by pressing the Frequency Key.)

Figure 13 – Sonde Frequency Selected With Frequency

Key

NaviTrack®II

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Activating Frequencies

Frequencies can be chosen for the set of Checked-Active frequencies so they will be available using the Frequency Key . Frequencies can also be deactivated to keep the frequency set smaller.

Each frequency is activated by choosing it from a list in the Main Menu

(See Figure 15)

. Frequencies are grouped by

category:

Sonde Active Line Trace Passive Line Trace (Power)

1. Push the Menu Key:

Figure 14 – Menu Key

The Main Menu is then activated:

Figure 15 – Main Menu

2. Using the up and down arrows, highlight the frequency desired. In

Figure 16

, below, the operator is

activating a 128 Hz frequency.

Figure 16 – Highlighting a Desired Frequency (128 Hz)

3. Press the Select Key

(shown below)

to check the box

for each frequency intended for use.

Figure 17 – Select Key

Figure 18 – Desired Frequency Checked

4. Frequencies that have been selected for use will show a check in the box next to them. These are “Checked-Active” frequencies.

5. Press the Menu Key again to accept the choices and exit. The last selected Checked-Active frequency will now be the “In-Use” frequency.

Figure 19 – Menu Key

The Main Menu lists all frequencies currently available for activation. For information on adding additional frequencies to the Main Menu so they can be chosen for activation,

see “Frequencies Selection Control” on page 23.

(European versions of the NaviTrack II include a 93 kHz Line Tracing frequency.

See the note on page 17

using this frequency.)

NaviTrack®II

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Sounds of the NaviTrack II

The sound level is driven by the proximity to the target. The closer to the target, the higher the sound pitch will be. A rising tone indicates increasing signal.

In Sonde Mode, if the sound level reaches its highest point, it will “re-scale” to a medium level and continue signaling from the new starting point.

In Sonde Mode the pitch will “ratchet” upward. That is, it will rise and fall in pitch while approaching the Sonde. Moving away from the Sonde, it will drop to a lower pitch and remain there as long as one moves away from the Sonde. Moving back toward the Sonde again it will resume rising and falling starting from the level it had reached previously. This serves as a guide to when you are getting closer or further away from the Sonde.

In Line Trace or Passive Line Trace mode, sound is on one continuous curve and does not re-scale.

If desired, force the sound to re-center at a medium level (in any mode) by pressing the Select Key during operation.

Sonde Locating

The NaviTrack II can be used to locate the signal of a Sonde (transmitter) in a pipe, so that its location can be identified above ground. Sondes can be placed at a problem point in the pipe using a camera push rod or cable. They can also be flushed down the pipe. A Sonde is often used for locating non-conductive pipe and conduit.

The field of a Sonde is different in form than the circular field around a long conductor such as a pipe or cable. It is more like the field around the Earth, with a North Pole and a South Pole.

NaviTrack®II

Figure 20 – Earth's Dipole Field

In the Sonde’s field, the NaviTrack II will detect the points at either end where the field lines curve down toward the vertical, and it will mark these points on the map display with a “pole” icon ( ). The NaviTrack II will also show a line at 90 degrees to the Sonde, centered between the Poles, known as the “equator”, much like the Equator on a map of the Earth if the planet were viewed sideways.

Note that because of the NaviTrack’s Omnidirectional antennas, the signal stays stable regardless of orientation. This means the signal will increase smoothly approaching the Sonde, and decrease smoothly moving away.

Figure 21 – Earth's Dipole Field Sideways

When locating a Sonde set up the locate in the following manner:

Activate the Sonde before putting it in the line. Select the same frequency on the NaviTrack II and make sure it is receiving the signal.

After the Sonde has been sent into the pipe, go to the suspected Sonde location. If the direction of the pipe is unknown, push the Sonde a shorter distance into the line (~15 feet from the access is a good starting point).

Pole

Equator

Ground

IMPORTANT! Signal strength is the key factor in

determining the Sonde’s location. To ensure an accurate locate take care to maximize the Signal Strength prior to marking an area for excavation.

The following assumes that the Sonde is in a horizontal pipe, the ground is approximately level and the NaviTrack II is held with the antenna mast vertical.

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NaviTrack®II

Location Methods

There are three major parts to locating a Sonde. The first step is to localize the sonde. The second part is pinpointing. The third is verifying its location.

Step 1: Localize the sonde

• Hold the NaviTrack II so the antenna mast is pointing outward. Sweep the antenna mast in the suspected direction of the Sonde while observing the Signal Strength and listening to the sound. The signal will be highest when the antenna mast is pointing in the direction of the Sonde.

• Lower NaviTrack II to its normal operating position (antenna mast vertical) and walk in the direction of the Sonde. Approaching the Sonde, the Signal Strength will increase and the audio tone will rise in pitch. Use the Signal Strength and the sound to maximize the signal.

• Maximize the Signal Strength. When it appears to be at its highest point, place the NaviTrack II close to the ground over the high-signal point. Be careful to hold the receiver at a constant height above the ground, as distance affects Signal Strength.

• Note the Signal Strength and move away from the high point in all directions. Move the NaviTrack II far enough in all directions to verify that the Signal Strength drops significantly on all sides. Mark the point of highest Signal Strength with a yellow Sonde Marker (clipped to antenna mast for convenience). This is the suspected Sonde location.

Figure 22 – Poles and Equator of a Sonde

If while “getting closer” the Equator appears on the screen follow it in the direction of an increasing Signal Strength to localize the Sonde.

If a Pole appears before the Equator appears, localize the Sonde by centering the Pole in the cross-hairs.

Step 2: Pinpoint the Sonde

The Poles should appear on either side of the maximum signal point, an equal distance on either side if the Sonde is level. If they are not visible on the screen at the point of maximum Signal Strength, move from the maximum point perpendicular to the dotted line (Equator) until one appears. Center the locator over the Pole.

Where the Poles occur depends on the Sonde’s depth. The deeper the Sonde, the further away from it the Poles will be.

The dotted line represents the Equator of the Sonde. If the Sonde is not tilted, the Equator will intersect the Sonde at maximum Signal Strength and minimum Measured Depth.

NOTE! Being on the Equator does not mean that the

locator is over the Sonde. Always verify the locate by maximizing Signal Strength and marking both Poles.

• Mark the first Pole location found with a red triangular Pole marker. After centering on the Pole, a double-line indicator will appear. This line represents how the Sonde is lying underground, and in most cases also represents the pipe’s approximate direction.

• When the locator gets close to a Pole, a zoom ring will appear centered on the Pole, allowing precision centering.

• The second Pole will be a similar distance from the Sonde location in the opposite direction. Locate it in the same manner and mark it with a red triangular marker.

• If the Sonde is level, the three markers should be aligned and the red Pole markers should be similar distances from the yellow Sonde marker. If they are not, a tilted Sonde may be indicated.

(See “Tilted Sonde”

on page 14)

. It is generally true that the Sonde will be on the line between the two Poles, unless there is extreme distortion present.

Step 3: Verify the locate

• It is important to verify the Sonde’s location by crosschecking the receiver’s information and maximizing Signal Strength. Move the NaviTrack II away from the maximum Signal Strength, to make sure that the signal drops off on all sides. Make sure to move the unit far enough to see a significant signal drop in each direction.

Figure 23 – Sonde Locate: Equator

• Double-check the two Pole locations.

• Notice that the Measured Depth reading at the maximum Signal Strength location is reasonable and consistent. If it seems far too deep or too shallow, recheck that there is an actual maximum Signal Strength at that location.

• Notice that the poles and the point of highest Signal Strength lie on a straight line.

It doesn’t matter whether you locate the Poles first, and then the Equator, or the Equator first, and then the Poles, or one Pole, then the Equator, and then the other Pole. You can even locate the Sonde using just the Signal Strength, and then verify your result with the Poles and Equator. What is important is that you verify all the data points, and mark the Sonde’s position where the signal is highest.

Tilted Sondes

If the Sonde is tilted, one Pole will move closer to the Sonde and the other farther away so that the Sonde location no longer lies midway between the two Poles. The Signal Strength of the nearer Pole becomes much higher than that of the more distant Pole if the Sonde is vertical (as it could be if it fell into a break in the line); however, it can still be located.

If the Sonde is

vertical

what is seen on the screen is a single Pole at the point of maximum Signal Strength. (The RIDGID Floating Sonde is designed to have a

Ridge Tool Company

NaviTrack®II

single Pole “visible” and is weighted to maintain the Sonde on a vertical axis.

See Note below

It is important to realize that a severely tilted Sonde can cause the Pole locations and the Equator to appear offset because of the angle of the Sonde; but maximizing the Signal Strength will still guide to the best location for the Sonde.

Floating Sondes

Some Sondes are designed to be flushed or to drift down a pipe pushed by water flow. Because these Sondes swing much more freely than a torpedo-shaped Sonde in a pipe, they can be oriented any which way. This means the Equator may be distorted by tilting, and the location of the Poles may vary. The only guarantee of having located a floating Sonde is maximizing the Signal Strength and double-checking that the signal falls away on every side of the maximum signal location.

NOTE! If a Sonde is moving, it may be easier to “chase”

a pole and then pinpoint the actual position of the Sonde after the Sonde has stopped moving.

Measuring Depth (Sonde Mode)

The NaviTrack II 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.

2. Measured Depth will be shown in the lower left hand corner of the NaviTrack II’s display screen.

3. A Measured Depth reading can be forced by pressing the Select Key during a locate.

4. Measured Depth will be accurate only if the signal is undistorted.

Clipping (Sonde Mode)

NOTE! Measured Depth Display is disabled under

clipping conditions.

IMPORTANT! Remember that being on the Equator

does not mean one is over the Sonde. Seeing two Poles aligned on the display is not a substitute for centering over each Pole separately and marking their locations as described

above. If the Poles are not visible, extend the search. For best accuracy use the bubble level. The mast

MUST be vertical when marking the Poles and Equator, or their locations will be less accurate!

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NaviTrack®II

Figure 24 – Screen Display in Different Locations (Sonde)

On the 1" Pole On the Equator Approaching the 2nd Pole

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Line Tracing

Active Line Tracing

In active line tracing, underground lines are energized with a line transmitter. This active signal is then traced using the NaviTrack II. A line transmitter is different from a Sonde in that it is used for tracing an energized line, rather than acting as a target for a locate the way a Sonde does. Line transmitters energize lines by direct connection with clips, by directly inducing a signal using a clamp, or by inducing the signal using inductive coils built in to the transmitter.

1. Energize the line according to the manufacturer’s instructions. Select the transmitter frequency.

DANGER

Connect both ends of the transmitter leads before turning the transmitter on, to avoid electric shock.

Set the frequency used on the NaviTrack II to the same frequency used on the transmitter. Be sure it has a line trace icon.

Push the Menu button to return to the operating screen.

Figure 26 – Line Trace Frequency Chosen with the

Frequency Key

(This screen will flash briefly when a new frequency is chosen)

2. Observe the Proximity Signal and Signal Strength to ensure the NaviTrack II is picking up the transmitted

NaviTrack®II

Normal

Tilted

Maximum Signal Strength

Figure 25 – Tilted Sonde, Poles and Equator Note the Pole on the right is closer to the Equator, due to tilt.

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signal.

(See Figure 27 below)

. The signal should peak over the line and drop off on either side. The Signal Angle indicator will be near zero when the NaviTrack II is directly above the line.

Figure 27 – High Probability Locate

3. When tracing, the direction the pipe or cable is running will be shown on the screen with 2 lines, one solid and one dashed. The solid line (the Tracing line) is the signal as seen by the lower antenna node and the dashed line (the Distortion Line) is the signal as seen by the upper one.

(See Figure 27.)

4. The Tracing line has three important functions. It represents the location, and the direction, of the signal being traced. It reflects changes in direction of the target utility — when the utility makes a turn, for example. And it helps recognize signal distortion, when compared to the dashed line — if something is interfering with the signal and distorting its shape, the dashed line could be significantly offset or skewed.

5. Use the Proximity Number, Signal Strength, and Tracing and Distortion lines to guide the line trace. These three pieces of information are generated from discrete signal characteristics to help the operator discern the quality of the locate. An undistorted signal emitted from a line is strongest directly over that line. By maximizing the Proximity Signal, and centering the Tracing and Distortion lines on the screen the confidence in a “good” locate is high. Confirm a locate by testing whether the Measured Depth reading is stable and reasonable.

Testing for the consistency of the Measured Depth reading can be done by raising the NaviTrack II a known distance (say, 12" exactly) and observing whether the Measured Depth indicator increases by the same amount. Small variation is acceptable, but if the Measured Depth does not change, or changes drastically, it is an indication of a “distorted” field, or a very low level signal on the line. As always, the only way to be completely certain of the location of a utility is through visual inspection by exposing the utility.

NOTE! The accuracy of position and Measured Depth

measurements improves as the NaviTrack’s lower antenna node is placed closer and closer to the target utility. Rechecking the Measured Depth and position periodically during the excavation process can help avoid damage to a target utility and may identify additional utility signals that were not noticed prior to excavation.

WARNING

Care should be taken to watch for signal interference that may give inaccurate readings. The Tracing line is only representative of the position of the buried utility if the field is UNDISTORTED. Do NOT base your locate solely on the Tracing Line.

Always cross check your locate by ensuring that:

• The Tracing Line and the Distortion Line are substantially aligned.

• The Proximity Signal and the Signal Strength maximize when the Tracing Line crosses the map center.

• The Measured Depth increases appropriately as you raise the unit vertically and the Tracing Line and the Distortion Line remain aligned.

Measured Depth readings should be taken as estimates and actual depths should be independently verified by potholing or other means prior to digging.

Note on 93 kHz Frequency Use

NOTE! European versions of the NaviTrack II offer an

additional 93 kHz frequency for Line Tracing.

The default 93 kHz frequency has an actual cycle count of 93,696 cycles per second.

Some older transmitters use a different value for the nominal 93 kHz frequency, 93,622.9 cycles per second.

If you find that your transmitter signal at 93 kHz cannot be detected by the NaviTrack II, set the locator’s frequency to 93-B kHz, which is set to the older value. Both 93 and 93-B frequencies can be found under the Line Trace category of the Frequency Selection sub-menu.

NaviTrack®II

Distortion Line (Dashed)

Trace Line (Solid)

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Passive Line Tracing

In passive mode the NaviTrack II senses fields generated by wires carrying alternating current (AC), without a transmitter being attached. Buried power lines typically do not emit any traceable signal unless power is flowing in the wires. For example streetlights that are turned off can be hard to trace passively. Due to coupling (either through induction or through capacitance), all metallic lines in an area can be energized passively. Because of this, it is possible to locate lines passively but it can be difficult to identify which line the operator is tracing.

1. Select a Passive AC Trace Frequency with the passive line trace icon.

Figure 29 – 60 Hz Passive Trace Frequency

2. The NaviTrack II has two passive AC tracing frequency settings. They are 50 Hz, and 60Hz. The 50Hz and 60Hz frequencies are set to respond to the 9th harmonic of the commonly used AC frequencies. U.S. installations are typically 60 Hz, while European installations are typically 50 Hz.

NaviTrack®II

Figure 28 – Screen Display in Different Locations (Active Line Tracing)

Trace Line (Solid)

Distortion Line (Dashed)

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When line tracing, it is important to remember that Tees, curves, other conductors in the vicinity, and nearby masses of metal can add distortion to the field requiring closer scrutiny of the data to determine the path of the target. These distortions are likely to be worse when tracing passively.

For best accuracy, use directly connected Active Line Tracing whenever possible.

WARNING

In Passive Line tracing, or when signals are extremely weak, the Measured Depth will generally read too DEEP and the actual buried depth may be MUCH shallower.

Operating Tips for Active Line and Passive Line Tracing

• The NaviTrack II quickly identifies distorted fields. If the lines are not centered on the map, when the Proximity Signal or Signal Strength is maximized, distortion is creating a complex non-circular field. To improve the tracing circuit:

1. Try changing the frequency used to a lower one.

2. Move the ground stake position away from the line

being traced.

3. Make sure that the line is not commonly bonded to

another utility. Undo common bonds only if safe to do so.

4. Move the transmitter to a different point on the line,

if possible.

• If the tracing lines will not center or if they move across the screen erratically, then the NaviTrack II may not be receiving a clear signal. The Measured Depth and the Proximity Signal may also be unstable under these circumstances.

1. Check the transmitter to be sure that it is operating

and well grounded.

2. Test the circuit by pointing the lower antenna at ei-

ther transmitter lead.

3. Check that the NaviTrack II and transmitter are op-

erating on the same frequency.

4. Try different frequencies, starting with the lowest,

until the line can be picked up dependably.

5. Re-locate the ground connection for a better cir-

cuit. Ensure there is enough contact (ground stake is sufficiently deep) especially in dryer soils. When soil is dry, soak the earth around the ground stake to improve signal.

• Using the Signal Angle Indicator is another way to check for distorted signals. Move the NaviTrack II perpendicularly to both sides of the traced line until the Signal Angle Indicator reads 45 degrees. Be sure to keep the lower Omnidirectional antenna node at the same height and the locator level. If there is little or no distortion the traced line should be in the middle and the distance to each 45 degree point should be approximately the same on either side.

Another variation of this technique is to move the same distance to the right and left of the traced line, say 24 inches (60 cm) and check that the Signal Strength readings are similar.

Figure 30 – Checking for Distortion

• While tracing, the Proximity Signal and Signal Strength should maximize, and the Measured Depth should minimize at the same place where the lines center on the display. If this is not the case, the utility may be changing direction or other coupled signals may be present.

• Higher frequencies bleed over to adjacent utilities more readily, but may be needed to jump breaks in tracer wires or go over insulating couplers. If the line is ungrounded at the far end, higher frequencies may be the only means to make the line visible

(See on page 28).

• When using the transmitter inductively, be sure to begin the locate about 30 feet (10m) away to avoid “direct coupling”, also known as air coupling. This occurs when the NaviTrack II picks up the signal from the

NaviTrack®II

Same Distance

45° Point

Energized Pipe

Ridge Tool Company

transmitter directly through the air and not from the line to be traced. To test for air coupling, point the NaviTrack II directly at the transmitter; if Signal Strength increases, then the transmitter may be too close to the receiver to trace accurately.

NOTE! The weaker the inductively coupled signal pro-

duced on the conductor, the greater the aircoupling distance.

While tracing, the mapping display operates best under the following conditions:

• The line is level.

• The NaviTrack II Locator is above the target utility elevation.

• The NaviTrack II antenna mast is held approximately vertical.

If these conditions are not met, pay close attention to maximizing Proximity Signal and Signal Strength.

In general, if the NaviTrack II is used in a zone over the target line within a sweep area of about two “depths” of the line, the map will be useful and accurate. Be aware of this when using the map if the target or line is very shallow. The width of the useful search area for the map can be small if the line is extremely shallow.

Measuring Depth (Tracing Modes)

The NaviTrack II calculates Measured Depth by comparing the signal level at the lower antenna to that at the upper antenna.

Measured Depth is approximate; it will 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 NaviTrack II’s display screen.

3. A Measured Depth reading can be forced by pressing the Select Key during a locate.

4. Measured Depth will be accurate only if the signal is undistorted.

NOTE! In Active Line Trace or Passive Line Trace modes,

pressing the Select Key will force a Measured Depth reading. If sound is on, it will also re-center the audio tone.

Clipping (Tracing Modes)

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 and accurate Measured Depth measurements are not possible. If clipping persists, remedy it by increasing the distance between the antennas and the target line you are tracing OR by reducing the strength of the current from the transmitter. Note that Measured Depth Display is dis-

abled under clipping conditions.

Menus and Settings

Pressing the Menu Key brings up a series of choices which let the individual operator configure the NaviTrack II

(See Figure 31).

The menu is a context-sensitive list of options. The entry point into the menu list is set to the currently in-use frequency.

Figure 31 – Main Menu

In sequence from the top of the menu down, the Main Menu presents the following items:

1. Selected Sonde frequencies (activated or not)

2. Selected Active Line Trace frequencies (acti-

vated or not)

3. Selected Passive Line Trace frequencies (acti-

vated or not)

4. Measured Depth Measurement Units Setting

Control

5. Backlight Control

6. LCD Contrast Control

7. Display Elements Control (sub-menus will

display when selected for Sonde or Line Tracing modes)

8. Frequency Selection Control (sub-menus

will display for categories of frequencies that can be selected)

NaviTrack®II

Auto Menu Exit Countdown Timer

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9. Information Menu including software version and

unit serial number (sub-menu for restoring factory defaults will display on Information screen).

See page 25 for a complete Menu list.

Auto Menu Exit Count-down Timer

While traversing the menu tree you will see a counter at the bottom of the screen counting down. When it reaches zero it will automatically move back up one level of the menu tree until it reaches the operating screen again. It resets to nine each time you press a key and each time it goes up one menu level until it reaches the main operating screen.

Selected Sonde Frequencies

Sonde frequencies that have been selected from the currently available list appear with a check box next to them. If the checkbox is checked, the frequency will be activated (Checked-Active) and can then be accessed using the Frequency Key. Frequencies are checked or unchecked by highlighting them and pressing the Select Key. To return to the operating screen, press the Menu Key.

Possible inclusions are:

16 Hz 512 Hz* 640 Hz 850 Hz 8 kHz 16 kHz 33 kHz

(* = Factory-selected frequencies.)

(See “Frequencies Selection Control” on page 23, to add any frequencies to the Main Menu that do not appear on it because they have not been selected.)

Selected Active Line Trace

Frequencies

As with Sonde frequencies these items will be checked or unchecked and activate accordingly.

Possible included frequencies are:

128 Hz* 1 kHz* 8 kHz* 33 kHz* 65 kHz 200 kHz

262 kHz*

(* = Factory-selected frequencies.)

Selected Passive Line Trace

Frequencies

As with other frequencies these items will be checked or unchecked and activate accordingly.

Possible included frequencies are:

50 Hz 60 Hz*

(* = Factory-selected frequencies.)

Measured Depth Units

The NaviTrack II can display Measured Depth in either feet or meters. Feet are shown in feet-and-inches format; meters are in decimal format. To change these settings highlight the Units selection in the menu and press the Select Key to toggle between feet or meters

(Figure

32)

. Use the Menu Key to save the section and exit.

Figure 32 – Selecting Units (Feet/Meters)

Back Light Toggle Control

A light detector built into the upper left corner of the keypad senses low light levels

(See page 9)

. The backlight

can be forced on by blocking the light to this sensor. The automatic LCD backlight is factory set to only turn on

under fairly dark conditions. This is to conserve battery power.

To set the backlight to be always off, highlight the light bulb icon in the tools section of the menu and press the Select Key to toggle it between Auto, always ON and always OFF. Use the Menu Key to save the selection and exit.

Figure 33 – Setting Backlight Mode (On/Off/Auto)

NaviTrack®II

Ridge Tool Company

LCD Contrast

When this is selected by pressing the Select Key the contrast can be adjusted

(Figure 34).

Use the up and

down arrows to make the screen lighter or darker

(Figure

35)

. Extreme temperature changes may make the LCD appear dark (hot) or light (cold). Setting the contrast to extreme dark or light may make the LCD difficult to read.

Figure 34 – Contrast Setting Option

Figure 35 – Increasing/Decreasing Contrast

Use the Menu Key to save the setting and exit. In this menu you can also exit by pressing the Select Key to save the setting and exit.

Display Elements Menu

Selecting the icon representing two small display screens will bring up the Display Selection Menu for either Trace

or Sonde mode

(Figures 36 and 37)

. This control is used to toggle screen elements on and off. The NaviTrack II is shipped with some of the optional elements set to OFF to make getting started easier. To switch an element ON or OFF, press the Up or Down Key to highlight the selection. Then use the Select Key to check or uncheck the box. Checked display elements are set to ON for the selected mode. Personal preferences and the type of locating being done will dictate which optional elements the operator wants displayed.

Figure 36 – Screen Elements (Sonde Mode)

Figure 37 – Screen Elements (Line Trace Modes)

Optional Features within the Display Elements Menu

Optional features of the NaviTrack II can be turned on by using the Menu Key to show the menu tree. Select the Display Elements selection menu. Then select the mode to change (Trace or Sonde).

Figure 38 – Main Menu

Optional Features for the Sonde Mode include:

Race Track and Watermark

The “Race Track” is a circular track around the center of the Active View Area on the screen. The Watermark is a marker which appears in the outer ring of the display, traveling along the Race Track. The Watermark is a graphic representation of the highest Signal Strength reached (in Sonde mode) or the highest Proximity Signal level reached (in Line Tracing modes). It is “chased” by a solid Level Pointer which shows the current Signal Strength.

(See Figure 39 for example.)

If the Signal

Strength Level Pointer goes higher than the Watermark,

NaviTrack®II

Display Elements Option

Ridge Tool Company

the Watermark moves up accordingly to show the new highest level graphically. The Watermark, like the highwater ring in a bathtub, shows the highest level reached. This provides an additional, visual way to track the maximum signal. The Watermark and Race Track are a single option that is off by default but can be set on in the Display Elements selection menu.

Figure 39 – Racetrack with Watermark and Pointer

No-Signal Icon

When the NaviTrack II is not receiving any meaningful signal on the selected frequency it will display the mode sign with a line through it, indicating no signal is being detected

(Figure 40)

. This reduces the confusion of trying to

interpret the random noise in the absence of a signal.

Figure 40 – "No-Signal" Display in Sonde Mode

Center Signal Strength Option

Turning the option on in the Menu Selection screen will force the number representing Signal Strength to be displayed in the center of the display area anytime when no Proximity Signal is available

(Figure 41)

. This may occur when the signal is weak. When a Proximity Signal again becomes available, the Signal Strength number returns to the lower right corner of the screen as usual. (Line Trace Mode only).

Figure 41 – Signal Strength Centered

Sound Muting

This option enables the automatic muting of the sound when the Measured Depth is greater than 99 feet. If it is unchecked, the sound will not mute automatically. (Sonde Mode only)

Sound Switching

When checked this will tie sound to the Signal Strength when no Proximity Signal is available. (Trace Modes only)

Frequencies Selection Control

Additional available frequencies can be added to the list of Main Menu currently available frequencies by going to the Frequency Select Sub-menu and selecting the desired mode

(Figure 43)

. Checked frequencies are already “currently available” – that is, selected to appear in the Main Menu. From there, they can be set to “Checked-Active” status to make them available by use of the Frequency Key.

To select additional frequencies go down to the Frequency Selection sub-menu, and highlight the category of the desired frequency

(Figure 42).

Figure 42 – Selecting a Frequency Category

NaviTrack®II

Ridge Tool Company

Then use the Up and Down Keys to scroll through the available frequencies. Highlight the desired frequency to add it to the Activated Frequencies list

(Figure 43)

Figure 43 – Highlighting a Frequency to Activate

Checking a frequency (using the Select Key) will include it in the selected frequencies on the Main Menu. Once on the Main Menu it can be set to checked-active status, and then be chosen using the Frequency Key.

Figure 44 – Selecting a Frequency to Activate

To switch to a “currently available” frequency that is not yet “Checked-Active”, press the Menu Key and scroll down to the desired frequency; if it is not checked, press the Select Key to toggle the checkbox to “checked”. This sets the status of that frequency to “Checked-Active”. Press the Menu Key to return to the operating display, which will now be set to the frequency just activated. The NaviTrack II will show the chosen frequency and its icon on the left of the screen as the current “in-use” frequency.

“Checked-active” frequencies can be switched while the NaviTrack II is in use, by pressing the Frequency Key. When using the Frequency Key, the NaviTrack II will cycle down through the set of active frequencies from low to high, group by group, and repeat. Unchecking a frequency in the Main Menu will de-activate it, and then it will not appear when pressing the Frequency button.

NOTE! If a frequency appears missing, look to make

sure it is in the Main Menu frequencies list. If it is present but unchecked, set it to “CheckedActive” status by highlighting it and pressing the Select Key. If it is not present, go to the Frequency Selection menu and the appropriate sub-category and select it there, checking the box to make it currently available in the Main Menu list. Make sure it is “checked” at both menu levels for it to appear in the current working set of frequencies.

Information Screen and Restoring

Defaults

Information Screen

The information screen appears at the bottom of the Main Menu. Highlighting the Information icon and pressing the Select button displays information about the locator, including software version, serial number of the receiver and its calibration date.

Figure 45 – NaviTrack II Information Screen

Restore Factory Defaults

Pressing the Select Key a second time will display the Restore Factory Defaults option.

Figure 46 – Factory Defaults Selection

This option is turned on by selecting the checked box (√). If the “X” option is chosen, no change from current settings will be made.

NaviTrack®II

Ridge Tool Company

Figure 47 – Defaults Restored (Sonde Mode)

Pressing the Menu Key without changing either checkbox will exit the option and leave things as they were.

Menu Tree

The following graphic shows the options and controls built into the NaviTrack II menus. Pressing the Menu Key from the active screen moves the display to the top of the menu tree. Move through the choices using the Up and Down Keys. Pressing the Select Key when any choice is highlighted will show that sub-menu. Pressing the Menu Key within a sub-menu will move up one level. Checkboxes are turned on and off by pressing the Select Key.

A Better Way of Locating

The NaviTrack II gives the operator a picture of the situation as the receiver moves along the target area and makes it easier to understand where a target line’s electromagnetic field is. With more complete information, an operator can understand how things stand underground and resolve complex situations, avoid inaccurate mark-ups, and find the right line or cable more rapidly.

What the NaviTrack II Does

The NaviTrack II is used above ground to sense and trace electromagnetic fields emitted from underground or hidden lines (electrical conductors like metal wires and pipes) or Sondes (actively transmitting beacons).

When the fields are undistorted, the information from the sensed fields gives an accurate picture of the buried object. When the situation is made complex by interference from more than one line, or other factors, the NaviTrack II provides a display of information that show multiple measurements of the detected field. This data can make it easier to understand where the problem is, by providing clues as to whether a locate is good or bad, questionable or reliable. Instead of just laying paint in the wrong place, the operator can see clearly when a difficult locate needs re-evaluation.

The NaviTrack II provides more of the critical information the operator needs to understand the situation of the utility being located.

What It Does Not Do

The NaviTrack II locates by sensing electromagnetic fields surrounding conductive objects; it does not sense the underground objects directly. It provides more information about the shape, orientation, and direction of fields than other locators but it does not magically interpret that information or provide an x-ray image of underground objects.

A distorted, complex field in a noisy environment requires intelligent human thought to analyze correctly. The NaviTrack II cannot change the results of a difficult locate, even though it shows all the information about those results. Using what the NaviTrack II shows, a good operator can improve locating results by “making the circuit better” (change frequency, ground, or the transmitter’s location on the target line.)

NaviTrack®II

Activated Frequencies

Sonde Selected Frequencies Line Trace Selected Frequencies Power (Passive Trace) Selected Frequencies

No-Signal Indicator

Sonde

16 Hz, 512 Hz, 640 Hz, 850 Hz, 8kHz 16 kHz, 33 kHz

Information Menu

Restore Default Settings (Check Yes/No)

Trace Mode

Units of Measure

Feet/Meters

Backlight Options

On/Off/Auto

LCD Contrast

Increase/Decrease

Display Elements Select (Check On/Off)

Sonde Mode

Watermark

Sound Signals Center Signal Strength* Signal Strength Angle Indicator Mute > 99' Tracing Lines*

* = Line Trace Display Only

Frequency Select (Check On/Off)

Line Trace

128 Hz, 1 kHz, 8 kHz, 33 kHz, 200 kHz, 262 kHz

Power

50 Hz, 60 Hz

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Advantages of the Omnidirectional Antenna

Unlike the coils used in many locator devices, the Omnidirectional antenna detects fields on three separate axes, and can combine these signals into a “picture” of the apparent strength, orientation and direction of a field. Omnidirectional antennas offer definite advantages:

The Mapping Display

The mapping display enabled by the Omnidirectional antennas provides a graphic view of a signal’s characteristics and a bird’s eye view of the signal underground. It is used as a guide for tracing underground lines and can be used to better pinpoint Sondes. It can also be used to provide more information for complex locates.

Figure 48 – Mapping Display

The use of lines (representing the signals sensed by upper and lower antennas) gives the operator a graphic way to see where they are, and where the target utility or Sonde is located. At the same time the display provides all the information needed to understand what is happening with the field being located – its Signal Strength, continuous distance, Signal Angle and proximity to the target. The information available at one moment on the NaviTrack II would take multiple sample readings with some conventional locators. A distorted or compound field is easier to interpret when all the information is in a single display as it is with the NaviTrack II.

Orientation to the Signal

Because of the multiple signals being processed by each Omnidirectional antenna, the target’s signal always gets stronger as the receiver gets closer to the target. How the unit is held does not affect Signal Strength. The user can approach from any direction and does not need to know the orientation or direction of the pipe or wire.

Locating Sondes

Used with a Sonde, the NaviTrack II eliminates Nulls and "Ghost Peaks”. A conventional locator signal often sees a signal increase followed by a null (better described as no signal registering on the antenna) and then a peak. This can confuse the operator who may interpret a smaller peak as the target.

Figure 49 – The signal from a Sonde as “seen” by a con-

ventional locator

The main peak is in the center, and two false peaks are

outside the two nulls.

The NaviTrack II uses just one peak to draw the user to the target. Finding a Sonde using Signal Strength is a very direct process.

Figure 50 – Sonde signal as “seen” by the NaviTrack II The only way to go is “up” toward the maximum signal.

NaviTrack®II

False Peaks

Null

Peaks

Peak

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Proximity Signal

The NaviTrack II’s Proximity Signal is a new piece of information – a tool to help center the operator on the target line. It tells the operator how close the instrument is to the target. Using the Proximity Signal in a locate gives a more defined peak than using Signal Strength.

The proximity signal is based on comparing the information being sensed by two Omnidirectional antennas in the upper and lower node casings of the NaviTrack II. (Active Line Trace and Passive Line Trace modes only).

“Informational” Locating

Because of NaviTrack II’s advanced processing and display, the information provided by the NaviTrack II makes it clear when a locate has a high confidence level, and when a locate is suspect.

A good operator can understand the underground picture with much less effort by using the combined information provided by:

• Proximity Signal/Signal Strength

• Tracing line and Distortion Line (lower and upper antennas)

• Continuous Measured Depth indications

• Signal Strength

These indicators show what the antennas are “sensing” as they move through the field. This signals when a field is being pulled or pushed out of shape by interference from other lines or objects nearby. When significant distortion is present, the indicators will not agree. Knowing distortion is present allows the operator the option of taking action to reduce it or at least account for it. (For example, both location and Measured Depth reading in distorted fields become suspect).

The other side of having more information is verification that a locate is good. If all of the indicators are in agreement and reasonable, then the degree of confidence in a locate can be much higher.

Getting the Most Out Of the NaviTrack II

The basic features of the NaviTrack II make it quick to learn. But the instrument also has advanced features that will make locating in tricky conditions much easier if the operator understands what they are showing.