3M Dynatel 2273 Advanced Cable and Fault Locator User Manual

September 1999
78-8097-6517-1-B
Dynatel™ 2273
Advanced Cable and
Fault Locator
Operators Manual 

TABLE OF CONTENTS
Introduction ............................................................................... 2
Installing or Replacing the Batteries ........................................ 2
Initial Receiver Configuration .................................................. 3
Receiver Battery Test ................................................................ 3
Transmitter Battery Test ........................................................... 4
Using External DC Power and 5 Watt Output...

INTRODUCTION
The 3M™ Dynatel™ 2273 Advanced Cable and Fault Locator consists of a
Transmitter and a Receiver for locating buried cables or Active Duct
Probes (sondes). It also measures and pinpoints sheath faults in buried
cables and conductor faults in aerial cables. The Transmitter provides four
frequencies to accommodate varying factors such as distance, cable type,
or soil conditions. If desired, all four frequencies may be transmitted at
once. The Transmitter also provides a separate Tone function...

INITIAL RECEIVER CONFIGURATION
Display depth units (inches, feet and inches, or centimeters) may be
changed while holding 
 and pressing .  For each press, one of
three units will display. To change the passive Power frequency, press and
hold 
 then press  to toggle between 50 or 60 Hz as displayed in
the lower left corner of the display.
To change the Null bar graph display mode, press and hold 
then
press 
 to toggle between normal Null bar graph display (Null flag will
flash) and inverse Null bar...

TRANSMITTER BATTERY TEST
To test the Batteries, press and hold .   Listen to the tone and watch
the display.
• solid tone and OK indicates batteries good;
• beeping tone and LO indicates batteries low;
• no tone and - - indicates replace batteries.
Note:   The battery test indicates battery condition for normal output
levels.  If the unit resets when the high output level is selected, use the
normal output level or replace the batteries.
USING EXTERNAL DC POWER AND 5 WATT OUTPUT
If the unit has the...

LOCATING A BURIED CABLE
Transmitter Setup
Note: Key descriptions can be found inside the Transmitter lid.
Perform a battery test and then connect the Transmitter using one of the
three methods below to put tracing signal on a cable.
DANGER!
Voltage greater than 240 volts will damage equipment and cause
personal injury and death.  Make all direct test connections before
turning on the Transmitter.  Then activate the Transmitter in the Ohms
mode and check the display for voltage readings.  Follow standard...

Make sure the Transmitter is off. Plug the direct connect cable into the
front panel jack.  Connect the Black clip to the ground rod.  Place the
ground rod in the earth perpendicular to the suspected cable path.  If
necessary, extend the black lead with the Ground Extension Cable.  Next,
remove the ground bonding and attach the Red clip to the shield.
Press         to turn the Transmitter on in the Ohms mode 
.  It will
measure the continuity of the cable under test.  The results are displayed in
ohms...

Press  to select Trace mode.  Press again to select one or all of the
four frequencies. The display will alternate between displaying the
selected frequency and the output signal current. It is best to choose the
lowest frequency for direct connect with far-end ground and a high
frequency for direct connect with no far-end ground.
Press 
 to  select high output level for longer tracing distances and
deep cables.
Transmitter setup is finished, now go to LOCATING A BURIED
CABLE - R
ECEIVER SETUP (Page...

Dyna-Coupler Method
Cable Path
Connect the Dyna-Coupler to the Transmitter front panel jack using the
coupler cable.
Clamp the Dyna-Coupler around the cable below any bonds just before the
cable enters the earth. The jaws of the coupler must fully close.
Press  to turn Transmitter on. Press again to select 8 kHz, 33kHz, or
200 kHz.
Select high output level by pressing  .
Transmitter setup is finished, now go to LOCATING A BURIED CABLE
- Receiver Setup (Page 10).
Page 8       

Induction Method
Place the transmitter on the ground over the target cable with the lid hinge
in line with the cable path.  Press 
 to turn the Transmitter on.
Press again to select either 33 kHz or 200 kHz. For greater tracing range,
select high output level by pressing  
.
Note:  If the Receiver is less than 50 feet from the Transmitter, it can pick
up signal through the air.  For best results, keep the Receiver away from
the Transmitter by at least that distance.
Transmitter setup is finished, now go...