Oscilloscope Probes

Oscilloscope probes are a type of device commonly used by electrical engineers that can connect a signal source to an oscilloscope. The probe is a single input device that can divert the electrical signal to the scope. Oscilloscope probes can be used in various applications and can range from a simple wire like a passive probe to a more complex device.

An oscilloscope is considered to be the most used instrument for electrical engineers who need to measure electrical characteristics of electronic devices but you also need at least one probe.

Things to consider when choosing probes

  • Ensure the probe's input connector matches the connector on your scope
  • Choose a probe whose input resistance and capacitance match the input resistance and capacitance of your scope - matching is critical for guaranteeing proper signal transfer and signal accuracy

The best approach, for matching a probe with a scope, is to first choose a probe whose capacitance is within the range of your scope and then fine-tune the probe's capacitance by adjusting its compensation network using the probe's trimmer capacitor.

The 1X probes are suitable for many low frequency applications. They typically offer the same input impedance of the oscilloscope which is normally 1 M Ohm. The most common type of probe with a built in attenuator gives an attenuation of ten, and it is known as a 10X oscilloscope probe.

Types of probes

Passive probes are the most commonly used probes for taking measurements. They are easy to use, relatively inexpensive, and fairly rugged. Available in the following configurations:

  • 1x: no attenuation
  • 10x: factor-of-10 attenuation
  • 100x: factor-of-100 attenuation
  • 1000x: factor-of-1000 attenuation

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. Useful for the following reasons:

  • It allows for the measurement of a signal that might exceed the limits of the oscilloscope
  • The attenuation circuitry results in higher resistance and lower capacitance, which is important for high-frequency measurements

Active probes contain active components, such as FETs or amplifiers. Commonly used for taking high-speed measurements (>500 MHz) or on high-impedance circuits. One limitation is their limited voltage range.

Differential probes are popular for measuring high-frequency signals or signals of very low amplitude.

A current probe measures the electrical current flowing through a conductor.

Tips:

  • Always use an appropriate probe tip and/or probe tip adapter whenever possible
  • Keep ground leads short

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Omschrijving Prijs Probe Type Attenuation Bandwidth Maximum Common Mode Input Voltage Connector Type Model Number p Number of Probes Safety Category Level Safety Category Voltage Calibrated Series Safety Category Rise Time
RS-stocknr. 179-9560
FabrikantRS PRO
€ 39,75
Each
Aantal stuks
Passive 10:1 100MHz - BNC - 1 - - - RS-TP CAT II 400V <3.5ns
RS-stocknr. 146-6622
FabrikantRS PRO
€ 42,84
Each
Aantal stuks
Passive 1:100 300MHz 1.5V BNC - 1 - - - - CAT I 1500V 1.2ns
RS-stocknr. 179-9565
FabrikantRS PRO
€ 520,00
Each
Aantal stuks
Active 1:10, 1:100 25MHz 700V BNC - - - - - - CAT III 14ns
RS-stocknr. 123-6479
FabrikantRS PRO
€ 920,00
Each
Aantal stuks
Differential, High Voltage 1:50, 1:500 70MHz 1.5kV BNC RSDPB5150 1 - - - - CAT II, CAT III 5ns
RS-stocknr. 146-6612
FabrikantRS PRO
€ 20,77
Each
Aantal stuks
Passive 1:1 25MHz 400V BNC - 1 - - - - CAT I 400V 14ns
RS-stocknr. 146-6614
FabrikantRS PRO
€ 24,54
Each
Aantal stuks
Passive 1:1, 1:10 15 MHz, 150MHz 600V BNC - 1 - - - RS-LF CAT I 600V 2.3 ns, 24ns
RS-stocknr. 179-9558
FabrikantRS PRO
€ 60,38
Each
Aantal stuks
Passive 10:1 350MHz - BNC - 1 - - - RS-TP CAT II 400V <1ns
RS-stocknr. 179-9561
FabrikantRS PRO
€ 38,81
Each
Aantal stuks
Passive 10:1 100MHz - BNC - 1 - - - RS-TP CAT II 400V <3.5ns
RS-stocknr. 146-6623
FabrikantRS PRO
€ 51,16
Each
Aantal stuks
Passive 1:100 300MHz ± 700V BNC - 1 - - - - CAT I 2500V 1.2ns
RS-stocknr. 146-6618
FabrikantRS PRO
€ 59,36
Each
Aantal stuks
Passive 1:10 300MHz 1.5kV BNC - 1 - - - - CAT I 600 V, CAT II 300V 1.2ns
RS-stocknr. 179-9562
FabrikantRS PRO
€ 35,24
Each
Aantal stuks
Passive 10:1 100MHz - BNC - 1 - - - RS-TP CAT II 400V <3.5ns
RS-stocknr. 179-9559
FabrikantRS PRO
€ 42,30
Each
Aantal stuks
Passive 10:1 150MHz - BNC - 1 - - - RS-TP CAT II 400V <2.33ns
RS-stocknr. 179-9566
FabrikantRS PRO
€ 1.601,00
Each
Aantal stuks
Differential 1:100, 1:1000 70MHz 5kV BNC - 1 - - - - CAT I 5000V 5ns
RS-stocknr. 146-6617
FabrikantRS PRO
€ 62,32
Each
Aantal stuks
Passive 1:1, 1:10 20 MHz, 250MHz 600V BNC - 2 - - - - CAT I 600V 1.4 ns, 18ns
RS-stocknr. 123-6478
FabrikantRS PRO
€ 443,78
Each
Aantal stuks
Differential, High Voltage 1:10, 1:100 50MHz 1.5kV - - 1 - - - - - -
RS-stocknr. 179-9557
FabrikantRS PRO
€ 142,75
Each
Aantal stuks
Passive 10:1 500MHz - BNC - 1 - - - RS-TP CAT II 400V <1ns
RS-stocknr. 146-6620
FabrikantRS PRO
€ 160,02
Each
Aantal stuks
Miniature 1:10 500MHz 1.5kV BNC - 1 - - - - CAT I 500 V, CAT II 400V <0.7ns
RS-stocknr. 146-6615
FabrikantRS PRO
€ 43,05
Each
Aantal stuks
Passive 1:1, 1:10 15 MHz, 150MHz 600V BNC - 2 - - - - CAT I 600V 2.3 ns, 24ns
RS-stocknr. 146-6613
FabrikantRS PRO
€ 21,97
Each
Aantal stuks
Passive 1:10 150MHz 20V BNC - 1 - - - - CAT I 600V 2.3ns
RS-stocknr. 146-6616
FabrikantRS PRO
€ 31,23
Each
Aantal stuks
Passive 1:1, 1:10 20 MHz, 250MHz 600V BNC - 1 - - - - CAT I 600V 1.4 ns, 18ns