high-precision measuring devices
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Oscilloscope probes
Diversity for every application
Oscilloscope probes are essential tools for precise electrical measurements as they provide the connection between the signal source and the oscilloscope. Tektronix offers a wide range of probes, including passive, active, differential and isolated models, suitable for different applications and requirements.
Particularly noteworthy are the 2nd generation IsoVu probes, which offer high common mode rejection and bandwidth thanks to their compact design and integrated electronics. Choosing the right probe is crucial to minimise measurement errors and ensure signal integrity.
burning questions:
Oscilloscope probes can be categorised according to their type or measurement function. Oscilloscope probes include passive probes, which use only passive components in the signal path, and active probes, which use active components, such as amplifiers, in the signal path. Since active probes contain active components, they require a power supply that is provided either by the oscilloscope, a battery or an external power supply. The measurement functions include unbalanced voltage, differential voltage, current, logic and optical measurements.
The most commonly used probes with an oscilloscope are passive voltage probes. They are simple to set up, relatively inexpensive and easy to use. They do not require an external power supply or battery. In order to reduce the load on the device under test and to enable large measuring ranges, most passive voltage probes are 10X probes, i.e. they attenuate the signal by a factor of 10.
The factors 1X and 10X for an oscilloscope probe refer to the attenuation of the probe. A 1X probe does not attenuate the signal at all, while a 10X probe attenuates the signal by a factor of 10. A 10X probe is often used to reduce the influence of the probe on the circuit being measured and to allow a wider measurement range. For example, if the input signal is 5 V and a 10X probe is used, the oscilloscope will measure 0.5 V at the input. Some oscilloscopes and probes automatically scale the reading on the display, while others require the user to multiply the reading by 10.
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