McLaughlin Vision GX2 User manual

○
R

1. Safety
1
2. Introduction
3
3. Composition
4
3-1. Main equipment & standard accessories 4
3-2. Optional equipment 4
4. Specification
5
5. Description of parts & basic operation
7
5-1. Transmitter 7
5-2. Receiver 9
6. Warning Message
12
7. Operation of Transmitter (TX)
13
7-1. Direct connection mode 14
7-2. External coil mode 17
7-3. Indirect (Inductive) mode 19
8. Operation of Receiver (RX)
21
8-1. Peak & Null mode 22
8-2. Null mode 23
8-3. Peak mode 23
8-4. Depth measurement (High precision) 24
8-5. Logging data 25
8-6. Current index (Current measurement) 26
8-7. Passive mode 28
8-8. Probe for non-metallic pipe 30
9.
Precautions and applications
(At the locating site)
32
Table of Contents

- 1 -
Always locate with proper respect and caution. Equipment misuse or
carelessness can result in serious injury or damage to property. Always follow
safety rules.
HAZARD ALERT INFORMATION
BE AWARE OF SAFETY INFORMATION
This is a safety-alert sign. This is placed in the manual and on
your equipment to alert you to the potential for bodily injury or
death.
SIGNAL WORDS
The safety-alert icon is used with the following signal word :
DANGER, WARNING, AND CAUTION. When you see these
words in the manual or on decals on your equipment, carefully read
and follow all instructions. Watch for these words and learn their
meanings.
DANGER – Imminent hazards which, if not avoided, will result in
death or serious injury.
WARNING – Potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION – Potentially hazardous situation which, if not avoided,
may result in minor personal injury or property damage.
OPERATOR PREPARATIONS
Important : Read and understand this manual before using the Verifier/Vison GX Locator.
Successful use of the Verifier/Vison GX Locator depends on good locating skills and correct
understanding of receiver response.
GENERAL SAFETY
DANGER : Do not attempt to connect to Live Power without proper protective Equipment
and Training.
DAGER ELECTRIC SHOCK : Death or serious injury will result
NOTICE : Do not apply more than 250 volts across clips. More than 250 volts will damage
transmitter.
1. SAFETY
DANGER
WARNING
CAUTION

- 2 -
DANGER : High Voltage. Cutting high voltage cable can cause DEATH or
ELECTROCUTION. Expose lines by a non-destructive means before excavating.
DANGER : Traffic Hazards can result in death or serious injury. Avoid moving Vehicles.
Wear high-visibility clothing.
WARNING : Buried lines. Always confirm your depth estimate by exposing target line by a
non-destructive means.
WARNING : Jobsite Hazards can cause DEATH or SERIOUS INJURY. Wear proper
safety equipment.
NOTICE : Non-metallic lines can be accurately detected only by using a probe.
Remember this before searching and attempting any excavation activity.
NOTICE : Use only alkaline batteries in the Verifier/Vison GX receiver and transmitter.
Batteries contain acid, which may leak if the batteries are allowed to remain in The
equipment when low or completely discharged. This acid can cause Equipment damage.

- 3 -
This equipment is the high performance digital measurement equipment to measure the location and the depth of
buried cable / metal pipe from the ground. By adopting the most recent microcomputer technology, the digital
correction of the measurement data realizes stable and high precious measurement.
- Principle measurement method -
When current flows through a buried cable/pipe, an alternating magnetic field is generated around it.
Location, depth, and current value of the buried pipe can be measured using the Receiver at the surface of the ground.
- Feature -
· Adopting the differential coil method allows the Receiver to receive the signal from directly below the Receiver by reducing
noise from surrounding area.
· Three kinds of the location measurement mode (having error detection protection function)
*Peak & Null mode: The method to detect maximum and minimum sensitivity simultaneously.
*Peak mode: The method to detect maximum sensitivity.
*Null mode: The method to detect minimum sensitivity point being indicated with arrow.
User operation is not needed.
Yaw angle, Depth of buried pipe and Current Measurement are continuously displayed when using all location modes.
· Two types of the depth measurement modes
*0-5m (16ft) mode: Measurement of depth with high precision is possible in indirect method, at the end of a cable, and jointing
points.
*0-10m (30ft) mode: Stable measurement is possible at deep depths, near guardrail, or fence. Do not use this mode when in
inductive mode.
· The Receiver can measure commercial frequency (50/ 60 Hz, 100 / 120 Hz) and Radio (from 9k to 33 kHz) without the use of the
Transmitter.
· The best-suited frequency is automatically selected in radio mode (9k – 33 kHz) with search function.
· The measured data is stored (maximum 400 data ) with one-touch operation.
The data can be transmitted to a PC as standard function. (PC software and PC cable are option.)
· Broadcasting of six frequencies （512Hz, 640Hz, 853Hz,9.5kHz, 38kHz, 80kHz) as needed for various buried utilities.
· A Probe as an option can be used to detect non-metallic pipe.
2. Introduction
Signal
Magnetic field
Pipe / Cable
Signal
Magnetic field
Pipe / Cable
*The model figure of the differential coil.
The differential coil method connects two coils. Signal is then
compared inversely between each coil.

- 4 -
3-1. Main equipment & standard accessories
Description Q’ty Remark
Transmitter Unit 1pc Used as a signal generator.
Receiver Unit 1pc Digital locator
Accessories
38kHz External coil 1pc Used for External coil mode
Connecting cable 1pc Used for Direct connection mode
Ground rod 1pc Used for Direct connection mode
Operating manual 1pc English version
3-2. Optional equipment
Description Q’ty Remark
9.5kHz External coil 1pc Used for External coil mode.
80kHz External coil 1pc Used for External coil mode.
Sewer Probe 1pc Used for non-metallic pipe.
Standard probe for 75mm/ 3" & 100mm/ 4" pipe.
Frequency: 38kHz or 512Hz
Mini probe 1pc For 25mm / 1" fiber optic duct.
For tracking non-directional drilling tools.
Frequency: 38kHz , 512Hz, 850Hz
PC Interface Cable 1pc Provided as USB cable
Data viewer software 1pc Provided on the CD
Earphone 1pc Used in a noisy area.
Carrying bag 1pc
3. Composition

- 5 -
Transmitter(TX)
Output frequencies 38kHz :38kHz
±
0.02% (Standard frequency)
9.5kHz :9.5kHz
±
0.02%
80kHz :78.125kHz
±
0.02%
853Hz :853.33Hz
±
0.02%
640Hz :640Hz
±
0.02%
512Hz :512Hz
±
0.02%
Dual : Direct mode 9.5kHz &38kHz
±
0.02%
: Inductive mode (1) 38kHz &80kHz
±
0.02%
: Inductive mode (2) 9.5kHz &80kHz
±
0.02%
Output power 7 watts maximum / 80kHz: 1 watts maximum
Operating Modes Direct connection mode, Inductive mode
External coil mode (optional )
Battery type Ten Alkaline LR20 “D” or NiMH
Battery Life Direct mode : 50 hours (Output 4mA , 20
°
C / 68
°
F)
Inductive mode : 20 hours (Output 50% , 20
°
C / 68
°
F)
Full Power(5W) : 10 hours (20
°
C / 68
°
F)
Battery Status Low battery indication & Press key readout
Visual Indication LCD : Bar graph & Digital number, includes Backlight
Audio Indication Internal Speaker : Alarm, Beeping sounds
Measuring function Output Current : 0 to 400mA
Line Voltage : AC 0 to 250V
: DC -100V to +100V
Resistance : 0 to 10M ohms
Output protection AC 250V ( 512Hz/640Hz: Output is cut off automatically)
Operating Temperature
-20
°
C to 50
°
C / -4
°
F to 122
°
F
Dimensions 400
´
230
´
98mm(15.7”
´
9.1”
´
3.9”)
Weight 4.2kg/ 9.3lbs approx. including ten batteries
4. Specification

- 6 -
Receiver (RX)
Active Frequencies 38 kHz : 38 kHz
±
2%
9.5 kHz : 9.5 kHz
±
2%
80 kHz : 80 kHz
±
2%
512Hz : 512 Hz
±
2%
LF : Low frequency(200Hz to 1000Hz) --- factory configurable
Passive Radio RAD : 9 k to 33 kHz (80 bands)
Passive Power POW : 45~65 Hz
120 Hz : 95~125 Hz
Battery type Six Alkaline LR6 “AA”
Battery Life 18 hours (20
°
C / 68
°
F)
Battery Status Continuous indication
Power save function Automatically power off after 5minutes of inactivity
Visual Indication LCD : Bar graph , Digital number & character, include Backlight
Depth Display Range High precision depth measurement
Line: 0 to 5 m /16 ft. ( 0-5 m / 0-16 ft. mode)
0 to 10 m /30 ft. (0-10 m / 0-30 ft. mode)
Probe : 0 to 10 m /30 ft.
Real time depth measurement
0 to 9.9 m / 33ft.
Depth Readout Unit Meter / Feet & Inch
Depth Accuracy*1 2.0m / 6.5ft. :
±
2.5%
3.0m / 10ft. :
±
5%
5.0m / 16.5ft. :
±
10%
Current value Current value flowing on the conductor is displayed for line identity in
milliamps.
Audio output Internal Speaker with sound volume adjusting function, Earphone
(optional)
Data logging Memorized 400 points of the depth/ the current measurement/ the date and
time data.
Interface 6-pin output connector
Operating Temperature
-20
°
C to 50
°
C / -4
°
F to 122
°
F
Dimensions 660 x 130 x 270 mm (26.0" x 5.1" x 10.6")
Weight 2.1 kg/ 4.7 lbs. approx. including six batteries
Note: *1 Locators are tested in test field conditions with no adjacent signals.
Always excavate the line with non-destructive means before digging.
*2 Optional cable is necessary to read the logging data.

- 7 -
5-1. Transmitter
1) LCD window
2) Key function
Power
Power ON / OFF
*Each time Transmitter is turned on the batteries are automatically checked.
Adjust
Press ADJUST key after hook up to automatically adjust power.
Selects operating frequency.
*1 DUAL : Broadcasts two frequencies simultaneously.
*2 512Hz , 640Hz , 850Hz : Direct mode only.
Measurement the AC voltage, DC voltage,
Re
sistance
or output signal
current when Direct connection mode.
Increase Output power
Reduce Output power
5. Description of parts & basic operation
LCD Window
Battery compartment
Touch pad
12-pin connector
Bar-graph (Output power)
Backlight On / Off
Sou
nd On / Off
Frequency
Battery indication
9.5kHz
80kHz
DUAL
38kHz
*1 *2
DC input
Output Power,/
Meas
urement value
Transmitting mode
Measure
Frequency
AC volts
DC volts
Resistance
Signal current
* Signal isn't outputted until Adjust is pressed when Direct connection mode.
512Hz
853Hz
640Hz

- 8 -
Light On/Off set
: Press
Key.
Sound set
: Press
Key.
: Sound on.
: Transmitter sound off. Function sound on.
: Sound off.
Press and hold
for 2 seconds.
Note : The last setting is memorized after the unit is Turned OFF
3) 12-pin connector
The Direct connection cord or the External coil cord are plugged into the 12-pin connector.
4) Battery compartment
Replace all batteries when there is a low battery condition.
Use ten 1.5V alkaline type D (LR20 / 13A) batteries.
Transmitter sound:
ALWAYS CHECK THE BATTERY POLARITY BEFORE
CLOSING THE COMPARTMENT
Beep…(15sec.)…..Beep…(15sec)…Beep
Light On Light Off
Mode
Battery 0％
Battery 100％
Unfasten the two hooks.
12-pin connector
DC input

- 9 -
5-2. Receiver
1)Key function
Power ON / OFF
*Power save function: Automatically powers off after 5~30 minutes of inactivity.
Adjusts s
ignal sensitivity for PEAK MODE.
D
epth
measuremen
t (High precision)
: Press DEPTH key at the peak value spot.
Battery
compartment
Earphone plug
PC interface
connector
Sensor connector
(Signal input terminal)
Frequency
Receiving
sensitivity
DEPTH
Bar-graph
Battery indication
POWER
Measuring Mode
GAIN LOG
MODE
PEAK/NULL FREQUENCY
Gain setting value
Depth
Current index: Details page 26
Note: Current index is not displayed if probe is used.
Note: 100% is not the maximum peak value. When 100% appears, press Gain key again
until a new sharp peak value is obtained, that is not 100%.
When pressing the Gain key, sensitivity is adjusted automatically to 70%.
* Semi-Automatic gain control mode (AUTO GAIN)
POWER
GAIN
DEPTH
NULL
PEAK
PEAK & NULL MODE: Maximum sensitivity is the point directly above the object line and the buried object line location is
indicated with arrow.
PEAK MODE: Maximum sensitivity is the point directly above the object line.
NULL MODE: Minimum sensitivity is the point directly above the object line. The buried object line location
is indicated with
arrow.
Selects locating mode:
PEAK/NULL
LOG
* Manual gain control mode (MANU GAIN)
Press the ▼Gain key, sensitivity is decreased.
Press the ▲Log key, sensitivity is increased.
PEAK & NULL
Real time depth

- 10 -
Various settings
1. Selects backlight options. By pressing Mode , continue on.
2. Selects sound options. By pressing Mode , continue on.
3. Selects Depth function. By pressing Mode , continue on.
4. Selects Gain control operation. By pressing Mode , continue on.
5. Selects PROBE detection. By pressing Mode , continue on.
When Sewer or Mini Probe is employed for the detection of Non-metallic pipe or Boring device,
38kHz, 512Hz and 850Hz are used for Probe.
6. Select real time depth and current displaying in Peak-mode. By pressing
Mode , return to measurement.
*The last setting is saved except Depth and PROBE function.
Press ▼Gain : Select speaker sound On / Off.
Press ▼Gain : Select depth function 0-5m / 0-10m ( 0-16ft / 0-30ft.).
Press ▼Gain : Select detecting
MODE
FREQUENCY
Selects operating frequency.
CAUTION
When applying Inductive mode, select 0-5m /16ft . Depth measurement
error increases near the Transmitter when 0-10m/30ft is applied.
PRB On .
Probe detection
PRB OFF .
Cable / Pipe detection
Press ▼Gain : Select backlight On / Off.
SPK OFF
SPK On - 1 (Small)
SPK On - 2 (Large)
LITE On
LITE OFF
120Hz
80kHz
38kHz
9.5kHz
512Hz
RAD
POW
*0-5m / 16ft : Applied for Inductive mode.
Detecting near t he end of the pipe.
Depth measurement range 0 to 5m(16ft).
*0-10m / 30ft : Applied for the depths deeper than
5m(16ft.) , near guardrail or metal fence.
The measurement range of depth 0 to 10m(30ft).
(See page 9)
Press ▼Gain : Select Gain control operation
MANU
AUTO
LF *
“No icon”
Press ▼Gain : Select ON/OFF.
D / CU On :
D / CU OFF
GAIN
Real time Depth and Current are displayed.
*
When
location
m
ode is
n
ull or
pea
k
&
null
, real time depth and current are
always displayed regardless of this setting.
* LF : Low frequency (200~1000Hz). Factory configurable

- 11 -
Setting the Time and Date
a)Power on while holding Mode , wait for clock display appears.
The year will flash.
Press ▼Gain to advance the year or ▲Log to decrease the year.
b) Press Mode , the month will flash.
Press ▼Gain to advance the month or ▲Log to decrease the month.
c)Do same as above to set Day - -> Hour - - > Minute.
When measurement starts, setting is completed.
2) Battery compartment
Replace all batteries when there is a low battery condition.
Use six 1.5V alkaline type AA (IEC LR6/NEDA15A).
3) PC interface connector
4) Earphone plug
Earphone can be used in a noisy area.
Supplied as an option.
5) Sensor connector (Signal input terminal)
Used with Sensor Coil to find wiring
systems in a building or overhead telephone cables.
Sensor coil is supplied as options.
6) Digital level
Displayed the inclination of the receiver.
MODE
Battery 0％
Battery 100％
Open
ALWAYS CHECK THE BATTERY POLARITY
BEFORE CLOSING THE COMPARTMENT
Battery holder
The connector is used to communicate PC and GPS.
*Interface cable & GPS are supplied as option.
Earphone plug
Sensor connector
PC interface connector
Calibration methodology of digital level
a) Power on while holding Depth key.
PUSH GAIN is indicated in 1 seconds.
b) Hold the receiver vertical position. (center of left chart)
c) Press ▼GAIN . Please do not move the receiver until OK is
displayed.
d) Press ▼GAIN again. Incline the receiver to the front, back,
left and right, and confirm the display.
The setting is memorized with Power off.

- 12 -
*Messages during your search procedure :
Receiving signal is too high.
a) Indirect mode : Transmitter and Receiver are too close each other.
b) Other options: Reduce output of the Transmitter.
Receiving signal is too weak or not present.
a) In the case of direct, induction or coil
- Increase output of the Transmitter.
- Check batteries, connecting parts and frequency of the Transmitter.
- Check signal loop at the Transmitter.
b) In the case of Radio / Power mode
- There are no conductors to radiate magnetic fields. There is no pipe or cable
- There is a conductor, but the signal is too low to adhere to the line. Use Transmitter
to search for the line.
*Messages on location :
Press GAIN key. Þ Normally this is your object line.
Reduces or increases signal strength.
*Messages on Depth measurement :
a) Received signal level is unstable, or received signal is too weak.
b) Located point is not directly above the object line.
c) Metallic fences, metallic structures or cars are interfering with the depth
measurement. Find area with less interference.
d) The Line is disconnected.
Indicating that the depth measured is deeper than 5 m / 16 ft.
In Line detection (0-5m / 0-16ft.) mode, locator cannot read below this depth
*Messages on transmitting operation:
Inside temperature exceeded an upper limit.
Þ Power off and move the transmitter to the cool place.
Power electric current exceeded an upper limit.
Inside temperature exceeded an upper limit.
Þ Leave the transmitter from the neighborhood of the metal.
Decrease transmitting output.
6. Warning Message
OVER
LOW
PUSH
GAIN
ERR
16. --ft/in.
5. --m
HEAT!
LIMIT

- 13 -
Mode of Detection
Purpose of usage
This is the best way to inject AC current directly to the target
line.
Signal (AC current) will return to the Transmitter through the
ground.
Effective for detecting the target line in congested areas.
Advantage for live power or cable, that is not accessible for
Direct connection.
The clamp is waterproof and will attach on any size cable or
conduit..
No need for a ground stake.
Effective for detecting the target line in congested area.
The target line must be grounded.
If there is no direct access to the target line, use this method.
The Transmitter can induce its signal to the buried line.
Place the Transmitter in an upright position and at right angle to
the buried line.
Minimum TX to RX distance Þ30 ft. / 10 m
Note: When using the indirect mode, set the depth mode of the receiver
to 0-5m (0-16ft.) .Depth measurement error increases near the
Transmitter when 0-10m (30ft) is applied.
Used with External Coil to find wiring systems in the building.
TX's circuit is protected* up to 250V at 50 / 60 Hz.
*If using the low frequency (512Hz, 850Hz…), output is cut
off automatically for protecting the unit.
Used for tracing small diameter drains or plastic pipes.
Also, pinpoint a drain blockage or collapse. Can trace non-
directional boring tools.
The Probe is available in two 20mm/ 0.79"
and 50mm / 2" diameter.
Direct Connection Mode
Building Wiring
Method
Probe Mode
Indirect (Inductive) Mode
7. Operation of Transmitter (TX)
Signal
Black clip
Transmitter Red clip
Target line
Ground stake
Ground
Signal
External Coil Mode
Signal

- 14 -
7-1. Direct connection mode
A specific route can be detected in Direct Connection mode. Use two connecting cables provided in the
carrying case as one of the standard accessories.
When the clips are connected to the transmitter, Direct Connection mode automatically selected.
Frequency setting
Connect the cable clips to the target line and ground stake.
Press FREQUENCY key
Transmitter
Note:
Place the Earth/Ground as far as possible and at right
angle to the object line.
Keep Receiver at least 5m/16ft. away from the signal
connection point as illustrated
Receiver
Press Frequency key
Black clip
Ground stake
Red clip
Metal pipe
Note: Clean
connection area if rusted or painted to
ensure a good electrical connection.
Check the grounded point. Find the best place to
ground to have a GOOD SIGNAL LOOP
indication.
*Set a receiving frequency on the Receiver the same as
the transmitter.
90°
5m/16ft or more away
Display of the Direct mode
This groove is facing up.

- 15 -
heck the Voltage
and Resistance
of the cable/pipe before adjust output power.
Adjust output power
When output is adjusted
*When the Receiver indicates “ OVER” , Press
key.
Þ
Reduce output.
*W hen locating a long-distance line or deeper depth than 3m, Press key.
Þ
Increase output.
ELECTRIC SHOCK
Death or serious injury will result. 250 Volts
maximum across clips. Use protective equipment.
DANGER
AC volts
DC volts
Resistance
Press Measure key.
When voltage is greater than 25 volts, Alarm sounds.
Note: 512Hz / 640Hz output is cut off automatically.
Telephone line, Gas pipe
Power line
Press Adjust key.
Automatically adjust power
Current value and “Good signal loop” are indicated.
*When “GOOD SIGNAL LOOP” isn't indicated after pressing ADJUST. Þ Clean off the connected part if
rusted or painted or move ground stake.
P P P P ….
When signal loop is acceptable, Beeping sound is emitted.
*Transmitter will beep for 30 seconds.
*Sound stops when Pressing ADJUST key.
*Sound setting is [b-0].ÞBeeping sound off.
Note: When frequency is changed, adjust output power again.

- 16 -
Direct Connection mode
Use the Receiver 5m / 16ft. away from the
transmitter and clips.
Applications (1)
Applications (2)
If the dead cable is the object, connect the red alligator clip of the connecting cable to either the aluminum-sheath
or a bundle of the copper cores directly.
5m / 16ft. away
Telephone cable:
Disconnect Telephone
Ground lead and connect
the Red clip to it to locate
Telephone line.
CATV cable:
Disconnect CATV's
ground lead and connect
the Red clip to it to locate
CATV line.
Telephone cable
CATV cable
Remember to correctly reconnect common grounds for telephone & CATV.
Check Local codes for proper grounding procedure. IMPROPER GROUNDING MAY CAUSE
DAMAGE TO APPLIANCES, FIRE OR EXPLOSIONS.
WARN
ING
The ground should be provide
at
the end of the line
Short distance dead cable
Long distance dead cable
No need of ground at the ending point
Common ground lead
Power cable
House meter
Power cable:
Disconnect other utilities that maybe
connected to the common ground lead
and connect the Red clip to Power line
ground lead. Then locate Power line.
WARNING
Do not disconnect
power line

- 17 -
7-2. External coil mode
Use 9.5 kHz, 38 kHz or 80kHz External coil supplied as an option. Use this mode if object is accessible.
An induced current, generated by the coil in the External Coil attachment, is applied directly to the exposed
part of the cable / pipe to be located.
Applicable to : Live Telecom cable or Live Power cable. Fiber optic cable having an aluminum-sheath.
When the External coil is connected to the transmitter, E
xternal coil mode is automatically selected.
Frequency setting
Adjust output power
Connect the External coil to the target line.
Note :Make sure it is attached parallel and in line with the cable as illustrated.
When 38kHz coil is
connected
Transmitting coil
*The jaws do not have to be closed around the cable.
(This coil method is different from the conventional clamp
that must have jaws perfectly closed. Different size clamps
are not needed. This coil method uses Indirect / Inductive
principle.)
Electromagnetic field
Telecom / Power cable
(Diameter up to 10cm / 4”)
Frequency is selected based on coil used
with the External coil automatically.
*Set a receiving frequency on the Receiver the same
as the transmitter.
Press Frequency key
External Coil mode indication
Indicate output power with the bar
graph and the numerical value when
pressing / key.
Reduce output
power
increase output
power
This groove is upward.

- 18 -
External coil mode
Make sure that the cable is grounded at both ends.
Do not put the coil close to or around the ending or middle ground.
* If the cable is submerged in water, you can use the coil attachment in the water.
The coil attachment is WATERPROOF.
Note : Do not attach to the metal pipe or metal riser above the ground.
Attach the coil clamp to the cable/PVC part.
Note :
Use the Receiver more than 5 m/16 ft away from the coil clamp
when starting the location work.
Unmeasurable
5m / 16 ft. away
OK
Intermediate ground
Metal Pipe
PVC Pipe
Cable
Note : Fresh water has no effect Locating the cable or detecting depth.
Brackish or salt water will effect locating.
Signal to ground
will not trace.