# What is a passive probe?

## What is a passive probe?

passive probes. Oscilloscope probes can be divided into two main categories: active probes and passive probes. Passive probes have no active components and therefore can operate without power from the scope. They are extremely common, and a set of passive probes is usually included with every oscilloscope.

## What is the difference between passive and active probes in an oscilloscope?

Passive probes do not require external probe power. Active probes do require external probe power for the active components in the probe, such as transistors and amplifiers, and provide higher bandwidth performance than passive probes.

What is attenuator probe?

Attenuation probes serve to multiply the voltage measurement range of the oscilloscope by using an internal resistor that, when used in conjunction with the input resistance of the scope, creates a voltage divider.

What is the difference between 1X and 10X probe?

A probe’s attenuation factor (i.e. 1X, 10X, 100X) is the amount by which the probe reduces the amplitude of the oscilloscope’s input signal. A 1X probe doesn’t reduce or attenuate the input signal while a 10X probe reduces the input signal to 1/10th of the signal’s amplitude at the scope input.

### What is the purpose of oscilloscope probe?

An oscilloscope probe is a device that makes a physical and electrical connection between a test point or signal source and an oscilloscope. Depending on your measurement needs, this connection can be made with something as simple as a length of wire or with something as sophisticated as an active differential probe.

### What is a high impedance probe?

High-impedance (Hi-Z) passive probes are the most commonly used oscilloscope probes and offer attenuation factors of 10:1 (X10) and/or 100:1 (X100), a typical maximum input voltage of 600 V, and rated bandwidths of up to about 500 MHz. But be wary at bandwidths above 50 MHz.

Why are 10x probes used?

Ten – X probes are the “standard” probes supplied with most scopes. They reduce signal amplitude by a factor of ten. Usually by incorporating a 9 megaohm resistor in the probe tip to act as a voltage divider. This added attenuation makes 10x probes good for high-voltage measurements.

What is the difference between a 1X and 10X oscilloscope probe?

## What is a 10 1 scope probe?

The most common oscilloscope probe is the 10:1 passive probe, which is perfect for most applications. The 10:1 designation indicates that the probe attenuates the signal by a factor of 10. A probe of a 100-V signal causes 10 V to appear at the oscilloscope input.