Oscilloscope Probes

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:
• 1´: no attenuation
• 10´: factor-of-10 attenuation
• 100´: factor-of-100 attenuation
• 1000´: 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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Täpsem kirjeldus Brand Stock Probe Type Attenuation Bandwidth Maximum Common Mode Input Voltage Connector Type Model Number p Number of Probes Safety Category Level Safety Category Voltage Series Safety Category Rise Time
RS PRO Oscilloscope Probe, Probe Type: Passive 100MHz 10:1 RS Pro 7 Passive 10:1 100MHz - BNC - 1 CAT II 400 Vrms RS-TP CAT II 400Vrms <3.5ns
RS PRO Oscilloscope Probe, Probe Type: Passive 100MHz 10:1 RS Pro 0 Passive 10:1 100MHz - BNC - 1 CAT II 400 Vrms RS-TP CAT II 400Vrms <3.5ns
RS PRO Oscilloscope Probe, Probe Type: Passive 200MHz 10:1 RS Pro 0 Passive 10:1 200MHz - BNC - 1 CAT II 400 Vrms RS-TP CAT II 400Vrms <1.75ns
RS PRO Oscilloscope Probe, Probe Type: Passive 200MHz 10:1 RS Pro 0 Passive 10:1 200MHz - BNC - 1 CAT II 400 Vrms RS-TP CAT II 400Vrms <1.75ns
Tektronix Oscilloscope Probe, Probe Type: Logic Tektronix 0 Logic - - - - - 8 - - - - -
RS PRO Oscilloscope Probe, Probe Type: Passive 350MHz 1:1 and 10:1 Switchable RS Pro 2 Passive 1:1 and 10:1 Switchable 350MHz - BNC - 1 CAT II 400 Vrms RS-TP CAT II 400Vrms <35ns
RS PRO Oscilloscope Probe, Probe Type: Passive 150MHz 10:1 RS Pro 1 Passive 10:1 150MHz - BNC - 1 CAT II 400 Vrms RS-TP CAT II 400Vrms <2.33ns
Keysight Technologies 10070D Oscilloscope Probe, Probe Type: Passive 20MHz 1:1 Keysight Technologies 0 Passive 1:1 20MHz - - 10070D 1 CAT II 150V - CAT II 150 V <17.5ns
Keysight Technologies 10076C Oscilloscope Probe, Probe Type: High Voltage 500MHz 100:1 Keysight Technologies 0 High Voltage 100:1 500MHz - BNC 10076C 1 CAT II 1000V - CAT II 1000 V <0.7ns
Keysight Technologies N2792A Oscilloscope Probe, Probe Type: Differential 200MHz ±60V 10:1 Keysight Technologies 0 Differential 10:1 200MHz ±60V BNC N2792A 1 CAT II - - CAT II 1.75ns
Keysight Technologies N2793A Oscilloscope Probe, Probe Type: Differential 800MHz ±30V 10:1 Keysight Technologies 0 Differential 10:1 800MHz ±30V BNC N2793A 1 CAT II - - CAT II 437ps
Keysight Technologies N2804A Oscilloscope Probe, Probe Type: Differential 300MHz ±300 (DC+Peak AC)V 100:1 Keysight Technologies 0 Differential 100:1 300MHz ±300 (DC+Peak AC)V BNC N2804A 1 CAT II 200V - CAT II 200 V 1.16ns
Keysight Technologies N2805A Oscilloscope Probe, Probe Type: Differential 200MHz ±200 (DC+Peak AC)V 50:1 Keysight Technologies 0 Differential 50:1 200MHz ±200 (DC+Peak AC)V BNC N2805A 1 CAT II 200V - CAT II 200 V 1.75ns
Keysight Technologies N2818A Oscilloscope Probe, Probe Type: Differential 200MHz ±60V 10:1 Keysight Technologies 0 Differential 10:1 200MHz ±60V BNC N2818A 1 CAT II - - CAT II 1.75ns
Keysight Technologies N2819A Oscilloscope Probe, Probe Type: Differential 800MHz ±30V 10:1 Keysight Technologies 0 Differential 10:1 800MHz ±30V BNC N2819A 1 CAT II - - CAT II 437ps
Keysight Technologies N2820A Oscilloscope Probe, Probe Type: Current 3MHz Keysight Technologies 0 Current - 3MHz - - N2820A 1 - - - - -
Keysight Technologies N2821A Oscilloscope Probe, Probe Type: Current 3MHz Keysight Technologies 0 Current - 3MHz - - N2821A 1 - - - - -
Keysight Technologies N2840A Oscilloscope Probe, Probe Type: Passive 50MHz 10:1 Keysight Technologies 0 Passive 10:1 50MHz - - N2840A 1 CAT II - - CAT II 300 Vrms 7ns
Keysight Technologies N2841A Oscilloscope Probe, Probe Type: Passive 150MHz 10:1 Keysight Technologies 0 Passive 10:1 150MHz - - N2841A 1 CAT II - - CAT II 300 Vrms 2.33ns
Keysight Technologies N2842A Oscilloscope Probe, Probe Type: Passive 300MHz 10:1 Keysight Technologies 0 Passive 10:1 300MHz - - N2842A 1 CAT II - - CAT II 300 Vrms 1.16ns
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