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 28 78-8130-6150-0-F

7. Receiver Modes

A. Directional Peak (Dir Pk)

Locate/OK [5] + Cable/Pipe [SK] + Mode [SK] + Dir Pk [SK Toggle]

InDirPkmode,fourpeakantennasareusedtoanalyzethemagneticfieldpattern.The

Bar Graph[1l]indicatesSignal Strength[10]andthedirectionalarrowssensetheedges

ofthemagneticfield.Theleft/rightarrowswillindicatethedirectiontothenearestcable

thatisin-linewiththereceiverhandle.

Astheantennacrossesthecableorpipe,thereceiverspeakervolumeincreasestoa

maximum,theBar Graph[1l]fillsfrombothsidestowardthemiddle,andthenumeric

Signal Strength[10]increases.Astheantennamovesoffthetargetpath,thespeaker

volumedecreasesandtheBar Graph[1l]opens.UsetheBar Graph[1l]andthenumeric

Signal Strength[10]valuetolocatetheexacttargetpath.

Left of Target Path Directly Over Target Path

Right of Target Path

Oncethetargetpathhasbeenlocated,thearrowsatthetopofthedisplaywillindicate

thelocationofthetargetpathinrelationshiptothereceiver.

Note: When field distortion (due to congestion) is affecting the receiver the left/right

arrows may not coincide with the bar graph. Use the maximum numerical signal

strength to target the cable or pipe.

B. Directional Null (DirNull)

Locate/OK [5] + Cable/Pipe [SK] + Mode [SK] + DirNull [SK Toggle]

InDirNullmode,astheoperatorapproachesthecableorpipe,thenumericalSignal

Strength[10]willincreasethenfallsharplyasthereceivercrossesthetargetcable

orpipe.TheBar Graph[1l]fillsfrombothsidestowardthemiddleandthereceiver

speakervolumedecreases.Astheantennamovesoffthetargetpath,theBar Graph[1l]

opens,theSignal Strength[10]increases,andthespeakervolumeincreases.Gainadjust

isautomaticinDirNullmode.

ThecenteroftheDirNulldisplayprovidesa‘compassview'ofthetargetpath.Anarrow

willpointtowardthelocationofthecable/pipein45-degreesteps.Asolidlinewill

appearoverthecable/pipe,indicatingitsorientationtothereceiverhandle.

3M Dynatel 2250M User Manual

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