User Manual

Page 9
SureTrace™
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Inductive Clamp (IC-958)with Battery Pack (BP-958) Callout Features
1. 1”(25mm)JawOpening.
2. Powerfulcoilinducesalowvoltage
signal onto a closed circuit.
3. 6’cordattachestothebattery
 packforpower.
4. Protectivecase.
5. (8)C-cellbatteries.
6. Inputjackforclampcord.
7. Hangmountformagneticstrap.
Magnetic Strap (not shown)
• Hooksontothebatterypack.
• Magnetattachestometalcabinets,
 panels,electricalboxes,etc.
• Velcrostrapwrapsaroundandhangs
 fromnon-magneticobjects.
Theory of Operation
Thetracerconsistsofatransmitterandareceiver.Thetransmitterproducesaunique
signalontothecircuittobetraced.Thereceiverdetectsthisuniquesignalwhenplacedin
theproperorientationtothewiresbeingtracedorbreakersbeingidentified.Thereceiver
providesanumericvalueandavariablepitch/tonethatincreaseasthesignalbecomes
stronger.
Thetransmittersendsa32kilohertz,fixed-amplitude,time-modulatedsignalthatinjectsa
voltageontothecircuittobetraced,whichtheninducesanelectromagneticfieldontothe
circuit.
Whether the circuit is open or closed greatly affects the strength of the electromagnetic
field.
Inanopencircuit,nocurrentcanflow,sotheelectromagneticfieldproducedismuch
weaker.However,inaclosedcircuit,theinjectedvoltageinducesacurrentflow,which
producesamuchstrongerelectromagneticfield.Thisistheoptimalmethodfortracingas
thismuchstrongersignalallowsthereceivertodetectitfromagreaterdistanceawayfrom
thecircuitbeingtraced.