3M Advanced Cable Locator 2250 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   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...

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 fre-
quency 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,...

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 num -
ber 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...

loCaTIng an aCTIve duCT Probe (adP)
Press  to turn the Receiver on.   
Press 
 to select the 33 kHz  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 moving...

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 pair involved), connect the Red clip to c\
rossed 
conductor of one pair and the Black clip to the crossed of the other pai\
r.
If the fault is a ground, connect the Red clip to the faulted conductor \
and the 
Black clip to ground.
Press 
 to turn...

Cable or PaIr IdenTIfICaTIon
Transmitter setup
Transmitter setup is the same to identify cables or pairs, however, Receiver 
setups are different.  Perform a battery test; then with the transmitter off, 
connect the 3M™ Dyna-Coupler to the Transmitter front panel jack using 
the coupler cable. 
Note:  Cable Identification requires two Dyna-Couplers: one at the   Trans-
mitter and one at the  Receiver. 
Clamp the Dyna-Coupler around the cable or both and tip and ring of a pa\
ir 
and make sure the jaws...

PaIr IdenTIfICaTIon
receiver setup
Press 
 to turn the Receiver on.
Press 
 to select Tone mode  .
Connect the inductive probe to Receiver accessory jack using probe cable.
Press 
 to select the highest toning frequency  (200 kHz).
Insert Probe into the bundle of pairs (or group, if known) and press 
 . 
Next, divide the pairs into two bundles and insert the Probe into each o\
f the 
bundles and observe the numeric display.  The bundle with the highest reading 
will contain the target pair. Continue by...

oPTIonal 3M™ eleCTronIC MarkIng sysTeM (eMs) aCCessorIes
 3M™ 6" Dyna-Coupler with Pouch, 1196
  3M™ Soft Carrying Bag 2200 Series
  3M™ 4.5" Dyna-Coupler 4001
  3M™ Dynatel Locator Coupler Accessory Kit 4519
  3M™ Cable Locator Coupler Accessory Kit 3019
  3M™ ADP 33KHZ Sonder for use with Dynatel Series Locators 3229
  3M™ Coupler Cable 9011
  3M™ Ground Extension Cable 9043
Page 19