3M Advanced PipeCable Locator 2220M Operator Manual

							11
Receiver Overview
➊
➋➌➍
➎
➏ ➐ ➑ ➒
1.   
Volume Control – Adjusts the volume of the receiver through three levels of 
audio and off.
2.  Power Key – Powers the receiver on and off.
3.    Peak Key – Toggles between Directional Peak, Induction Peak and Special 
(Single) Peak antenna configuration.
4.    Line Locate Key – Places the Receiver in Pipe/Cable locating mode and 
selects frequency. When toggled, it will cycle between 8 kHz, 82 kHz, and 
60 Hz (Power Mode). (More frequencies are available in setup mode).
5.    Sonde Locate Key – Places the receiver in sonde locate mode and selects 
sonde frequency. When toggled, it will cycle between 512 Hz and 33 kHz. 
More frequencies are available in setup mode.
6.    Gain Adjust – Adjusts the sensitivity of the receiver either up (+) or down 
(-) to maintain a satisfactory audio and bar graph response.
7.  Depth Key – Displays depth to target pipe/cable/sonde.
8.    Setup Key – Configure receiver depth units, enable/disable line and sonde 
frequencies, select 50 /60 Hz power frequencies.
9.    Bulb Key – Turns the display backlight on and off. 
						

							12
Transmitter Operations
There are three different methods of applying the transmitter’s locating signal to 
the target conductor: Direct Connection, 3M™ Dynatel™ Dyna-Coupler Clamp, 
and Induction.
Direct Connection
This is the preferred mode of operation because the transmitter is connected 
directly to a metallic portion of the target conductor (hydrant, meter, riser, 
valve, sheath, or tracer wire).
1.    While the transmitter is off, plug the direct connect cable into the output 
jack of the transmitter.
2.  Attach the red lead of the direct connect cable to the target conductor.
3.    Extend the black lead as far as possible from the target conductor at a right 
angle (90 degrees) to the suspected path of the target.
4.  Insert the external ground rod and attach the black lead of the transmitter.
5.    Turn the transmitter ON by pressing the frequency button. Select 8 kHz, 82 
kHz, or both (the word ALL will be displayed).
6.    An audible tone, indicating the continuity of the signal path will sound for 
10 seconds and the output current will display in mA.
  a. Solid tone = Good signal 
  b. Fast Beep = Moderate signal 
  c. Slow Beep = Minimal signal 
  d. No tone = Poor signal
7.    The frequency will flash alternately with the current of the target conductor 
on the display.
8.  Trace the signal path with the receiver.
3M™ Dynatel™ Dyna-Coupler Clamp
If a direct connection to the target facility is not possible, use the Dyna-Coupler 
clamp to apply the locating frequency on the metallic target conductor. In order 
to trace a target using this method, both ends of the target must be well grounded.
1.   While the transmitter is off, attach the coupler cable to the Dyna-Coupler 
clamp and plug it into the output jack of the transmitter.
2.    Clamp the Dyna-coupler around the metallic target. The jaws of the coupler 
must be fully closed.
3.  Select 8 kHz or 82 kHz on the transmitter by pressing the frequency key.
4.    Select High Output level when using a 3-watt transmitter, or High Output or 
Max Output level when using a 12-watt transmitter, for the best signal-to-
noise ratio.
5.  Trace the signal path with the receiver.  
						

							13
Induction Method
If you cannot make a direct connection, or use the 3M™ Dynatel™ Dyna-Coupler 
clamp to apply a locating signal on the target, use the induction method. This 
method uses the internal coil of the transmitter to generate a magnetic field. 
This is the least preferred method of applying a signal on a target conductor 
because it can easily be picked up by other non-target conductors in the area. 
However, it is the preferred method of applying a signal to multiple cables/pipes 
in the same trench.
1.    Verify battery level of transmitter and remove any cables from the output 
jack.
2.    Position the transmitter over the target facility, with the hinge of the 
transmitter over and in line with the cable/pipe path.  
3.    Align the Induction Direction arrows on the transmitter with the target 
conductor.
4.  Turn on the transmitter by pressing the frequency key.
5.    Select high output level when using a 3-watt transmitter, or high output or 
max output level when using a 12-watt transmitter, for the best signal-to-
noise ratio.
6.  Trace the signal path with the receiver using the Induction Peak mode.
The Induction Peak mode of the receiver is a mode in which the upper antenna 
of the receiver is tuned to minimize distortion from the magnetic field of the 
transmitter.
This mode is indicated by the induction icon in the bottom left-hand corner of 
the receiver's locate screen.
Note: If nothing is plugged into the output jack of the transmitter, the 
transmitter will automatically turn on the internal antennae, and 82 kHz 
will broadcast in induction mode. For best results, the receiver should be 
at least 25 feet (7.6 m) away from the transmitter to begin tracing the target 
path. Attempting to trace the target close to the transmitter may lead to false 
indications due to the receiver detecting the large magnetic field radiating 
from the transmitter. 
						

							14
Receiver Operations
Initial Settings
From the manufacturing facility, the receiver is configured as follows: 
Line Locate FrequenciesSelectionDefault
8 kHz Always EnabledEnabled
82 kHz Always EnabledEnabled
Power Always EnabledEnabled
Radio Enable/DisableDisabled
CATV Enable/DisableDisabled
CPS Enable/DisableDisabled
Sonde Locate Frequencies
512 Hz Enable/DisableEnabled
640 Hz Enable/DisableDisabled
33 kHz Enable/DisableEnabled
Units inch or cmInch
Power Frequency 50 Hz or 60 Hz60 Hz
Contrast Up or DownMiddle
Depth Measurement Live or One-ShotOne-Shot
The setup function will allow you to enable or disable additional locating and 
sonde frequencies. 
Receiver Setup
Any of the available frequencies of the 3M™ Dynatel™ Advanced Pipe/Cable 
Locator 2220M can be activated or deactivated. When a frequency is activated, 
a check mark will appear beside the frequency in the middle of the setup screen. 
All frequencies that are activated in the setup menu, will be available in the 
locate screens.
When the Setup key is pressed, the receiver will cycle through the following 
screens. 
Select the left/right arrow keys ( ← →) to cycle through the setup screens.
Contrast Adjust 
Press the up or down arrows (
 or ) 
to adjust the screen contrast. 
						

							15
512 Hz – Sonde frequency indicated by 
sonde icon.
Press the down key to enable/disable 
the frequency. A check mark will 
appear in the box when the frequency is 
enabled.
640 Hz - Sonde frequency indicated by 
sonde icon.
Press the down key to enable/disable 
the frequency. A check mark will 
appear in the box when the frequency is 
enabled.
33 kHz - Sonde frequency indicated by 
sonde icon.
Press the down key to enable/disable 
the frequency. A check mark will 
appear in the box when the frequency is 
enabled.
Radio or LF - Low Frequency Band 
(15 Khz–30 kHz) indicated by line 
locate icon.
Press the down key to enable/disable 
the frequency. A check mark will 
appear in the box when the frequency is 
enabled.
CATV – 31.5 kHz indicated by line 
locate icon.
Press the down key to enable/disable 
the frequency. A check mark will 
appear in the box when the frequency is 
enabled. 
						

							16
CPS – Cathodic Protection System– 
120 Hz or 100 Hz (based on 60 /50 Hz 
selection) indicated by line locate icon.
Press the down key to enable/disable 
the frequency. A check mark will 
appear in the box when the frequency is 
enabled.
50 Hz / 60 Hz - indicated by line 
locate icon.
To change the power frequency 
selection, press the up (60) or down 
(50) key. The selected frequency will 
appear in the box at the center of 
the screen.
Snapshot /Continuous Depth Modes - 
indicated by Depth icon.
Continuous depth measurements can 
be displayed on the screen in live 
mode or the depth can be frozen in 
snapshot mode.
Press the down key to enable/disable 
snapshot depth mode. A check mark 
will appear in the box when snapshot 
is enabled.
Depth Units
Select the up (inch) or down (cm) key 
to select the preferred units of measure. 
The selection will appear in the box at 
the center of the screen.
Information
This screen provides important 
information including the product serial 
number, as well as the software and 
hardware versions of the unit. 
						

							17
Line Locating Screen
➊
➋➌ ➐
➍➎
➏
➑
1. 
Speaker Icon – Indicates audio level
2.  Bar graph – Graphical representation of received signal
3.    Peak Mode Indicator – Indicates Directional, Induction, or Special (Single) 
Peak mode
Directional Peak iconInduction Peak iconSpecial (Single) Peak icon
4.   Selected Line Locating Frequency – Displays the frequency the receiver 
will detect
5.  Line Locating Icon – Indicates line locating mode vs. sonde mode
6.  Battery Icon – Indicates battery level of receiver
7.    Directional Arrows – Left/right indicators for path tracing in Directional 
Peak
8.  Signal Level – Numerical reading of received signal (dB) 
						

							18
Pipe and Cable Locating
1. Press the ON /OFF key.
2.  Press the LINE key to match the frequency that the transmitter is sending.
3.    Sweep the receiver across the area in a left right motion, while watching the 
bar graph, directional arrows, and signal strength.
4.    When a magnetic field is detected, the bar graph will close, the signal 
strength and the audio will increase.
5.    Adjust the gain so that the bar graph opens when the receiver is not on target 
and closes when directly over it by pressing the + or –  gain key.
6.    Pinpoint the target by moving the receiver left and right over the magnetic 
field until both arrows appear.
7.    Place the tip of the receiver on the ground over the target path and measure 
depth of the conductor by pressing the DEPTH key.
8.    Verify the depth of the target is as expected, and the current is comparable 
with the current displayed on the transmitter.
Depth and Current
To measure the depth of a target, place 
the tip of the receiver on the ground. 
Press the DEPTH key.
The depth to the target conductor and 
the current will display for five seconds.
Refer to receiver set up section to select 
“snapshot” of “live” depth modes.
Note: To further verify target, this current reading can be compared to the 
current reading on the transmitter. 
						

							19
Sonde Locating
A sonde is a small transmitter that enables the user to trace metallic and 
nonmetallic pipes, sewers, drains, or ducts. It can also be used to find a blockage 
or collapse. Refer to sonde manufacturer’s guide for proper selection of sonde 
for the desired application.
A representation of a sonde transmission field appears below.
There are typically three peak signals present. The strongest peak signal is over 
the center of the sonde. The signal will drop off each ‘side’ or ‘end’ of the sonde, 
and then rise again. The ‘drop off points’ are referred to as nulls.
Sonde Locating Screen
➊
➋➌
➍➎
➏
➐
1. Speaker Icon – Indicates audio level
2.  Bar graph – Graphical representation of received signal
3.  Antennae Icon – Indicates Special (Single) Peak mode
4.    Selected Sonde Frequency – Toggles through activated sonde frequencies 
(512, 640, or 33 k)
5.  Sonde Icon – Indicates sonde mode vs. line locating
6.  Battery Icon – Indicates battery level of receiver
7.  Signal Level – Numerical reading of received signal (dB) 
						

							20
Pin-Pointing the Sonde
Note: The receiver handle must be oriented perpendicular to the sonde. 
The cross bar of the receiver must be in line with the sonde (the opposite 
of line locating) .
1.   Set the receiver to sonde mode by pressing the SONDE key until the 
frequency of the sonde appears on the locate screen.
2.    Holding the receiver perpendicular to the suspected path, walk the path until 
the receiver detects the first peak signal of the sonde.
3.  Adjust the gain down if the bar graph closes completely.
4.    Continue to walk the path. Observe the response of the receiver as the center 
(and strongest) peak of the sonde’s magnetic field is detected.
5.    Continue past this strong peak. The signal will fall and then rise again as the 
last weak peak is detected.
6.  Retrace your steps, watching the receiver.
7.    The sonde has been pinpointed when the center of the strongest peak has 
been found.
8.    Measure the depth of the sonde by placing the tip of the receiver on the 
ground and pressing the DEPTH key. Refer to receiver set up section to 
select “snapshot” of “live” depth modes.