Portable oscilloscope recorderIt is a portable electronic measuring instrument that integrates waveform display, signal capture, data recording, and multi-channel analysis functions, widely used in fields such as electronic engineering, communication, automotive electronics, education and research.
Portable oscilloscope recorderPrecautions for operation and use:
1、 Preparation before operation
Check equipment integrity: Ensure that the appearance of the oscilloscope recorder is undamaged, and that all components (such as probes, power cords, memory cards, etc.) are complete and intact.
Read the user manual: Carefully read the user manual to understand the device's functions, operating steps, safety precautions, etc.
Choose the appropriate probe: Based on the characteristics of the measured signal (such as amplitude, frequency, etc.), select the appropriate probe and ensure that the bandwidth and impedance of the probe match the measured signal.
Grounding inspection: Ensure that the casing of the oscilloscope recorder is well grounded to avoid electric shock accidents. Before powering on, check if the power cord is worn, broken, or exposed, and if the power voltage matches the operating voltage of the instrument.
2、 Precautions during operation
Avoid direct sunlight: Avoid using the oscilloscope in direct sunlight or bright environments to prevent damage to the screen. When used under strong light, a light shield can be used and attention should be paid not to keep the light spot on one point for a long time.
Stay away from strong magnetic fields: Avoid using oscilloscope recorders in strong magnetic fields, such as around high-power transformers. A strong magnetic field may cause ghosting, noise interference, and even distortion in the measured waveform.
Estimate the amplitude of the measured signal: Before testing, first estimate the magnitude of the measured signal. If not clear, you can first set the vertical sensitivity selection switch of the oscilloscope recorder to the maximum position to avoid damaging the equipment due to high voltage.
Correctly set parameters:
Time reference: Select an appropriate time reference based on the frequency range of the measured signal to ensure that the complete waveform of the signal can be observed.
Vertical sensitivity: Select the appropriate vertical sensitivity based on the amplitude of the measured signal to ensure that the amplitude of the waveform is clear and visible.
Trigger setting: Select the appropriate trigger mode (such as edge trigger, pulse trigger, etc.) to ensure stable waveform display. According to actual needs, a single trigger mode can be set to observe transient signals, or an automatic trigger mode can be set to stably display signals.
Avoid overload: Do not directly connect signals beyond the input range of the oscilloscope recorder to avoid damaging the equipment. When measuring high voltage, the attenuation function of the probe can be used to attenuate the voltage and send it to the oscilloscope recorder.
Attention to probe compensation: When using the oscilloscope probe, appropriate compensation is required to ensure measurement accuracy.
Avoid prolonged continuous work: Prolonged continuous work may cause the oscilloscope recorder to overheat, affecting the accuracy of measurement results. It is recommended to take appropriate rest equipment and avoid prolonged continuous use.
3、 Safety operation standards
High voltage measurement safety: When using an oscilloscope to test high-voltage circuits, special attention should be paid to safety. Stand on an insulating material, operate with one hand, do not touch equipment and other grounded objects, and do not touch high-voltage testing points. When connecting the probe, first cut off the power supply of the high-voltage test circuit, and then perform the test after connecting it.
Amplitude control: The amplitude of the waveform displayed on the fluorescent screen should be controlled within 8 grids by adjusting the voltage attenuation coefficient. If it exceeds 8 grids, it will be impossible to observe and will be detrimental to the normal operation of the oscilloscope recorder.
Use high internal resistance voltmeter function: The oscilloscope recorder can be used as a high internal resistance voltmeter to measure the voltage of high internal resistance circuits. Due to the input impedance of the oscilloscope recorder being much higher than that of the multimeter, the measurement results are not only accurate, but also do not affect the normal operation of the tested circuit.
Pay attention to the amplitude of the measured signal: the voltage of the measured signal should not exceed the maximum input voltage (peak value) specified by the oscilloscope at the input terminal to avoid damaging the equipment.
4、 Maintenance and upkeep after operation
Regular calibration: In order to maintain the accuracy of measurement results, the oscilloscope recorder should be calibrated regularly.
Cleaning and maintenance: Regularly clean the exterior and interior of the oscilloscope recorder to maintain its good working condition. When not in use, the oscilloscope should be stored in a dry and cool place, avoiding humid and high-temperature environments.
Avoid vibration and shock: During transportation and use, avoid causing vibration and shock to the oscilloscope recorder to prevent damage to internal components.