Tektronix Probes and Accessories
APC Technology Group is a leading official UK Keithley Distributor offering a complete line of Tektronix test and measurement instruments. From their industry-leading Oscilloscopes, Signal Generators and Digital Multimeters to Source Measure Units. As well as a broad range of Keithley inventory, APC also offers exclusive discounts and Tektronix Service Factory plans, with technical expertise and product support from our team of in-house engineers and test equipment experts.
Conquer your measurement challenges with a wide variety of Tektronix Oscilloscope Probes and Accessories, all perfectly matched their our industry-leading oscilloscopes.
- Isolated Probes
- Low/High Bandwidth Optical Probes
- Power Rail Probes
- Current Probes
- Low/High Voltage Differential Probes
- Passive Probes
- Low/High Voltage Single Ended
- Logic Analyser Probes
Tektronix Oscilloscope Probes
Choose from a broad portfolio of Tektronix probes and accessories, all perfectly matched to our industry-leading oscilloscopes. With over 100 choices available, select the oscilloscope probe you need for your specific testing application.
Probing systems make high-resolution measurements in the presence of common mode signals or noise.
Industry-leading performance up to 6000V. Safety Certified.
Low capacitance and best in class bandwidth. Safety Certified.
Accessories for Probes and Oscilloscopes
Adapters, replacement probe tips and more accessories for your oscilloscope or probe.
Keithley DC Power Supply FAQ's
Passive Probes -
Precision Measurements Start at the Probe Tip
Probes are vital to oscilloscope measurements. To understand how vital, disconnect the probes from an oscilloscope and try to make a measurement. It can’t be done. There has to be some kind of electrical connection, a probe of some sort between the signal to be measured and the oscilloscope’s input channel.
In addition to being vital to oscilloscope measurements, probes are also critical to measurement quality. Connecting a probe to a circuit can affect the operation of the circuit, and an oscilloscope can only display and measure the signal that the probe delivers to the oscilloscope input.
Thus, it is imperative that the probe have minimum impact on the probed circuit and that it maintain adequate signal fidelity for the desired measurements.
If the probe doesn’t maintain signal fidelity, if it changes the signal in any way or changes the way a circuit operates, the oscilloscope sees a distorted version of the actual signal. The result can be wrong or misleading measurements.
In essence, the probe is the first link in the oscilloscope measurement chain. And the strength of this measurement chain relies as much on the probe as the oscilloscope. Weaken that first link with an inadequate probe or poor probing methods, and the entire chain is weakened.
In this and following sections, you’ll learn what contributes to the strengths and weaknesses of probes and how to select the right probe for your application. You’ll also learn some important tips for using probes properly.
What Is a Probe?
As a first step, let’s establish what an oscilloscope probe is.
Basically, a probe 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.
At this point, it’s enough to say that an oscilloscope probe is some sort of device or network that connects the signal source to the input of the oscilloscope. This is illustrated in Figure 1.1, where the probe is indicated as an undefined box in the measurement diagram.
The Ideal Probe
In an ideal world, the ideal probe would offer the following key attributes:
- Connection ease and convenience
- Absolute signal fidelity
- Zero signal source loading
- Complete noise immunity
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