1、 Daily operation standards

1. Pre-operation check
   • Power Supply and VoltageBefore use, it is necessary to confirm that the power supply voltage matches the rated voltage of the equipment (such as ensuring that the voltage of 220V equipment is between 210V-230V), to avoid voltage fluctuations and damage to internal components.
   • connection lineCheck if the interface is loose and if the wires are damaged to prevent short circuits or poor contact. For example, in a certain factory, a short circuit was caused by a broken insulation layer on the wire. After maintenance, the operators would carefully inspect the appearance of the wire every time.
   • ventilation holeEnsure that the heat dissipation holes are free of dust or debris blockage to avoid automatic shutdown of the equipment when the temperature is too high during operation. The pulse generator of a certain research institute was once shut down due to high temperature caused by paper covering the heat dissipation holes during operation.
2. Startup and parameter settings
   • Sequential startupFirst, turn on the power switch and observe if the indicator light is on normally (if the green indicator light flashes, it may indicate a fault). Preheat the equipment for 3-5 minutes to ensure that the internal components reach a stable working state.
   • Slowly adjust parametersSlowly adjust the frequency, amplitude, and other knobs according to experimental requirements to avoid numerical jumps caused by rapid adjustments. The operator of an electronics factory adjusted the frequency too quickly, resulting in distortion of the pulse signal. It was only after recalibration that it returned to normal.
3. operation monitoring
   • Sound and TemperatureA pulse generator that works normally should have no abnormal noise. If there is a sizzling sound, it may be due to the aging of the internal capacitor (such as a laboratory equipment making noise due to capacitor aging, which returns to normal after replacement). When running for a long time, it is necessary to feel the temperature of the equipment casing. If it is significantly hot, the machine should be stopped for cooling.
   • Parameter stabilityObserve whether the parameters on the display screen are stable. If the values fluctuate frequently, pause use and investigate the cause. The pulse generator at a certain university had fluctuating amplitude when outputting pulses. After inspection, it was found that the knob had poor contact. After cleaning, the fault was resolved.
4. Shutdown procedure
   • Turn off output signalFirst, turn off the output signal, and then adjust the parameter knob to zero in sequence to avoid direct power failure that may cause the parameter memory function to fail.
   • Disconnect the power supplyTurn off the power switch and disconnect the power connection to prevent standby power consumption or safety hazards. A laboratory operator forgot to disconnect the power after work, causing the equipment to consume electricity in standby mode and posing a safety hazard. Subsequently, regulations were established to unplug the device after shutting it down.

2、 Regular maintenance measures

1. cleaning equipment
   • surface cleaningWipe the surface dust of the equipment with a dry cloth every week, avoid using wet cloths or cleaning agents, and prevent liquids from seeping into the interior. The surface of the pulse generator in a certain factory is contaminated with oil. The operator gently wiped it with an alcohol swab, which not only cleaned the surface but also did not damage the casing.
   • Cleaning of heat dissipation holesClean the dust inside the heat dissipation holes with a soft bristled brush every month to ensure efficient heat dissipation. The heat dissipation holes of the pulse generator in a certain research institute have accumulated too much dust, and after cleaning, the operating temperature of the equipment has significantly decreased.
2. Storage environment
   • The equipment should be stored in a dry and ventilated environment, away from water sources and corrosive gases. The pulse generator in a certain warehouse cannot function properly due to moisture and rust on its internal components caused by being close to the humidifier.
3. Regular maintenance cycle
   • Internal circuit inspectionCheck the internal circuit connections every six months, tighten loose screws, and reduce signal interference.
   • Maintenance of cooling fanReplace the lubricating oil of the cooling fan once a year to prevent a decrease in cooling efficiency due to lack of oil.
   • parameter calibrationEvery year, use standard instruments to compare the frequency and amplitude of output pulses, ensuring that the error is within the allowable range (such as frequency error not exceeding ± 0.1%). The pulse generator of a certain metrology center is sent to a professional organization for calibration every year to ensure controllable errors.

3、 Troubleshooting and Handling

1. Common faults and solutions
   • Frequency instability or driftIt may be caused by aging of internal components or changes in environmental temperature, and regular calibration is required to maintain a constant working environment temperature.
   • Abnormal output amplitudeCheck if the power supply is stable, if the connection lines are good, and ensure proper grounding.
   • Waveform distortionCheck whether the internal components (such as capacitors and resistors) are normal and whether the connecting lines are disturbed.
   • No output signalCheck if the device is turned on correctly and if the connection lines are in good condition.
   • Trigger problemCheck if the trigger signal source is stable and if the trigger circuit is functioning properly.
   • noise interferenceKeep the device away from interference sources and check if the internal components are functioning properly.
2. Fault handling steps
   • Preliminary inspectionFirstly, check if the parameter settings are correct. If an operator mistakenly sets the frequency to 50Hz instead of the required 100Hz, adjust it and the signal will return to normal.
   • Power off and restartIf the parameter settings are correct, you can try shutting down and restarting the device. The pulse generator in a certain laboratory experienced a no output fault. After being powered off for 30 seconds and restarted, the fault was automatically eliminated.
   • Professional repairFor faults that cannot be resolved by oneself, it is necessary to contact professional maintenance personnel or manufacturers to avoid further damage caused by unauthorized disassembly. The pulse generator of a certain company was damaged due to internal chip damage, and the operator disassembled it on their own, resulting in circuit damage and increased maintenance costs