1、 Preparation before operation

1. Equipment inspection
   • Confirm that the cable identification device host, transmitter, receiver, induction clamp and other accessories are complete and undamaged.
   • Check if the battery level is sufficient (it is recommended to use original batteries or specified models) to avoid measurement interruption or data distortion caused by insufficient power.
   • Test equipment function: After turning on, observe whether the display screen is normal, whether the button response is sensitive, and whether the transmitter signal output is stable.
2. Environmental Assessment
   • Confirm that the target cable has been powered off (if live identification is required, a dedicated live detection mode must be used and safety regulations must be strictly followed).
   • Clean the surface dirt, oil stains, or metal particles of the cable to ensure good contact between the sensing clamp and the cable.
   • Stay away from strong electromagnetic interference sources (such as high-voltage lines, large motors, etc.) to avoid misjudgment caused by signal interference.
3. safety protection
   • Wear protective equipment such as insulated gloves and safety helmets to prevent electric shock or mechanical injury.
   • When used in damp, high temperature or flammable and explosive environments, moisture-proof, cooling or explosion-proof measures should be taken.

2、 Standardized operation

1. Correctly connect the device
   • Transmitter connectionConnect the transmitter output end to the target cable end through an induction clamp or directly clamp (with power off), ensuring a secure contact and no risk of short circuit.
   • Receiver usage：
     • Induction methodPlace the receiver sensing probe close to the surface of the cable and slowly move it to capture strong signal points.
     • Coupling methodIf the cable is live or cannot be directly contacted, a coupling coil can be used to inject the signal into the cable, and the receiver can identify it through induced magnetic field.
   • Parameter SettingsAdjust the transmitter frequency and receiver sensitivity according to the cable type (such as cross-linked polyethylene, oil immersed paper insulation, etc.) and length to obtain the best signal quality.
2. Signal recognition skills
   • Direction judgmentDetermine the cable direction (such as from the transmitting end to the far end) through the signal phase or arrow indication displayed by the receiver.
   • Multi cable differentiationIn dense cable groups, prioritize identifying cables with strong signal strength and make comprehensive judgments based on cable routing, numbering, and other information.
   • Avoid misjudgment：
     • Stay away from non target cables to reduce cross interference.
     • If the signal is blurry, you can try adjusting the transmitter frequency or receiver gain, or using double ended injection to improve accuracy.
3. Key points for safe operation
   • Power-off operationUnless the device explicitly supports live detection, the power supply of the target cable must be cut off, and a voltage tester must be used to confirm that there is no power before connecting.
   • 防止短路: Avoid the transmitter output terminal coming into contact with two cables or metal conductors at the same time to prevent equipment damage or safety accidents caused by short circuits.
   • keep distanceThe operator should maintain a distance of at least 1 meter from the transmitter to reduce electromagnetic radiation exposure.

3、 Post operation maintenance

1. Equipment cleaning and storage
   • Wipe the surface stains of the equipment with a dry cloth and avoid using corrosive cleaning agents.
   • Arrange the induction clamp, coupling coil and other accessories back in place to prevent deformation or damage.
   • Store in a dry and ventilated dedicated box, avoiding direct sunlight or high temperature environments.
2. Data recording and backup
   • Record measurement results (such as cable number, routing, signal strength, etc.) for subsequent analysis or traceability.
   • If the device supports data export function, regularly backup to the computer or cloud to prevent data loss.
3. Regular calibration and maintenance
   • According to the instructions, regularly send the equipment to a professional organization for calibration to ensure measurement accuracy.
   • Check if the battery contact points are oxidized, and if necessary, gently sand them with sandpaper.
   • When idle for a long time, power on once a month and run a self-test program to prevent components from getting damp or aging.

4、 Special scenario precautions

1. Identification of live cables
   • Special models that support live detection must be used, and equipment safety regulations must be strictly followed.
   • Operators must possess qualifications for high-voltage electrical work and wear protective equipment such as insulated boots and gloves.
   • Maintain a safe distance and avoid touching live parts.
2. Long distance cable identification
   • Inject signals at the starting and ending points of the cable, and determine the direction of the middle section by comparing the signal strength at both ends.
   • If the signal attenuation is severe, the signal can be injected in segments or enhanced using a repeater.
3. Underground cable identification
   • Combined with the underground pipeline detector, first determine the approximate position of the cable, and then use the cable identification instrument to accurately locate it.
   • During excavation, manual slow excavation is required to avoid damaging the outer protective layer of the cable.