3M Dynatel 2273 Advanced Cable and Fault Locator User Manual

LOCATING A BURIED CABLE
Receiver Setup
Note:  Key descriptions can be found on the side of the Receiver.
Press 
 to turn the Receiver on.
Press  
 to select the 50/60 Hz power frequency (see section on
Selecting Passive Power Frequencies on Page 12) for passive locating;
otherwise, select the same frequency as the Transmitter.
Press 
 to adjust the speaker volume as needed: off, normal, high, or
high-expanded.  The high-expanded setting causes the audio to cut off
below a certain threshold.
Press  
 to...

About Trace  Modes
Peak: 
In this mode, as the antenna crosses the cable, the Receiver speaker volume
increases to a maximum and the bar graph fills from both sides toward the middle.
As the antenna moves off the cable path, the speaker volume decreases and the bar
graph opens.
Peak with High-Expanded: While in Peak mode, press  to select High-
Expanded (the highest setting). Speaker response is cut off as the antenna moves
away from the cable.
Null: In this mode, the signal is a minimum directly over...

Selecting Passive Power Frequencies
See section Initial Receiver Configuration (Page 3) to set the power
frequency to 50 Hz or 60 Hz. The Receiver can be tuned to locate 3
different harmonics of the chosen power frequency.
    H50 Hz or H60 Hz (high harmonic): Best for general locating of
    passive power.
    L50 Hz or L60 Hz (low harmonic): Works best on primary power
    cables. May be used when high harmonic is weak or erratic.
    100 Hz or 120 Hz: For locating rectified AC power signals, often...

DETERMINING CABLE DEPTH AND CURRENT
Place the Receiver Antenna on the ground directly above the cable with
the handle parallel to the path. Press 
 and the display will indicate the
cable depth and relative current 
. Current is displayed in the lower left
corner of the display. Press 
 twice to continue tracing. You may also
press 
 to return to Trace mode.
Note:  During a depth-current measurement, the display will exhibit
     ' – – – '  when the received signal is too low, too high, or...

Using Current  Indications During Locating
Both the Transmitter and Receiver will indicate cable current.  These
current indications will help to select a trace frequency, identify the correct
cable and troubleshoot the set up.
When using the direct connect method, the Transmitter output current
number is displayed. A LO display, or number less than 50, indicates a
weak tracing signal. A number higher than 70 represents a strong tracing
signal. When the Receiver is used to find the cable near the...

LOCATING SHEATH FAULTS
Transmitter Setup
Remove both the near-end and far-end shield bonds from the test
section. Perform a battery test then with the Transmitter off, connect
the Black clip to the ground rod. Place the ground rod behind the
Transmitter, away from the faulted section, and in line with the cable
path. If necessary, extend the ground lead with the Ground Extension
Cable.
Attach the Red clip to the shield. Press            to turn the Transmitter
on in the Ohms mode  
.   Measure the fault...

Page 16
To verify the fault location, insert the frames red probe directly on the
spot identified above. Pivot the frame in a circle around the red leg re-
inserting the green leg in the ground every few degrees of the circle. The
bar graph should always be on the left (red) indicating that the fault is
directly below the red leg.
After a fault is found and pinpointed, move the Earth Contact Frame
about one frame width away from the fault and insert it in the ground
with the green-banded leg towards the...

Page 17
LOCATING AN ACTIVE DUCT PROBE (ADP)
 Press  to turn the Receiver on.
Press  to select the 33kHz frequency.
Press  to select the Peak mode         . If you find that the
received signal is too weak in this mode, try the Special Peak mode.
To select Special Peak mode, from Peak mode, press and hold
then press            to toggle between Peak and Special Peak
modes.
While in this mode the Peak flag will flash.
With the Receiver handle perpendicular to the conduit path, locate
the ADP position by...

Page 18
LOCATING EMS MARKERS
EMS markers may be detected and located using either the Dynatel™
2205 or 2206 EMS Marker Locating Accessory.  To attach the accessory,
slide the Receiver horizontally into EMS Marker Locating Accessory
mounting slot. Make sure the locking button holds the Receiver securely
in the slot. To separate the units, press the locking button down and slide
the Receiver out of the EMS Marker Locating Accessory mounting slot.
   Press           to turn the Receiver on.
Locating Markers...

Page 19
TONING AERIAL FAULTS
Transmitter Setup
Perform a battery test; then with the Transmitter off, plug the direct
connect cable into the front panel jack.
If fault is a shorted pair, connect Red clip to tip and the Black clip to ring.
If the fault is a cross (two pairs involved), connect the Red clip to crossed
conductor of one pair and the Black clip to the crossed conductor of the
other pair.
If the fault is a ground, connect the Red clip to the faulted conductor and
the Black clip to ground.
Press...