3M Dynatel 2250M - Power Frequencies; Passive Frequencies; Auxiliary Frequencies

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B. Power Frequencies
Powerfrequenciesreferto50or60Hzsignals,andtheirharmonics,thatcanbetraced
withouttheuseofatransmitter.
60: Bestforgenerallocatingofpassivepower.
60H (high harmonic): Ifthe60choiceappearstoberespondingslowly,orpoorly,then
60Histhesecondchoiceforlocatingofpassivepower.
60L (low harmonic): Thirdchoiceforpassivepowerlocating.Maybeusedwhen60or
60Lisweakorerratic.60Lmaybethebestchoicewhenlocatingprimarypowercables.
120 Hz: UsedforlocatingrectifiedACpowersignals,oftenfoundonpipelinesusing
impressedcurrentcathodicprotection.
1. PressLocate/OK [5]
2. PressCable/Pipe [SK]
3. PressFreq [SK]
4. PressPower [SKToggle]untilthedesiredfrequencyisdisplayedinthesoftkey
command[9](“Power”60,60L,60H,or120).
5. PressLocate/OK [5]toreturntoLocatemode.
AllU.S.receiversdefaultto60Hz.
Tosetthereceivertodetect50HzsignalsrefertoEnabling/Disabling Frequencies
sectionofthismanual.
C. Passive Frequencies
Thereceiver(withouta3M
™
Dynatel
™
2200-SeriesTransmitter)canbeusedtodetect
someCATVcables(31.5kHz).(Ahorizontal-scantelevisionNTSCmustbeturnedonto
generatethisfrequency.)
1. PressLocate/OK [5]
2. PressCable/Pipe [SK]
3. PressFreq [SK]
4. PressPasv [SKToggle]
5. PressLocate/OK [5]toreturntoLocatemode.
D. Auxiliary Frequencies
Auxiliaryfrequenciesaresignalsgeneratedfromremotelocationtransmitters,or
frequencygeneratingtransmitters.
1. PressLocate/OK [5]
2. PressCable/Pipe [SK]
3. PressFreq [SK]