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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Description Price 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 Stock No. 922-5255
Mfr. Part No.PP023-1
BrandLeCroy
MYR1,807.98
Each
units
Passive 1:10 500MHz - BNC PP023 1 CAT I, CAT II 400 Vrms, 500 Vrms - CAT I 500 Vrms, CAT II 400 Vrms 700ps
RS Stock No. 174-8873
Mfr. Part No.HVD3605A
BrandLeCroy
MYR16,738.31
Each
units
Differential 1:200, 1:2000 100MHz 600V - - 1 CAT I, CAT III 1000 Vrms, 1500 V dc, 6000 Vrms, 8485 V HVD3000A CAT I 6000 Vrms, CAT I 8485 V, CAT III 1000 Vrms, CAT III 1500 V dc 4.3ns
RS Stock No. 672-1700
Mfr. Part No.PK400-1
BrandLeCroy
MYR1,311.60
Each
units
Gripper - - - - PK400-1 - - - - - -
RS Stock No. 512-5025
Mfr. Part No.MTX1032-C
BrandMetrix
MYR3,370.88
Each
units
Differential 1:1, 1:10, 1:100 50MHz - BNC MTX 1032-C 7 CAT II 600V - CAT II 600 V 7ns
RS Stock No. 878-7610
Mfr. Part No.ZS1500
BrandLeCroy
MYR11,372.80
Each
units
Active 1:10 1.5GHz - ProBus ZS1500 2 - - ZS - -
RS Stock No. 134-6158
Mfr. Part No.N2140A
MYR379.78
Each
units
Passive 1:1, 1:10 200MHz - BNC 1000/3000 X-Series 1 CAT II 150 Vrms, 300 Vrms InfiniiVision CAT II 150 Vrms, CAT II 300 Vrms -
RS Stock No. 702-7910
Mfr. Part No.11060A
MYR162.57
Each
units
Surface Mount Device - - - - 11060A - - - - - -
RS Stock No. 825-1196
Mfr. Part No.68.9554-28
MYR293.71
1 Set
Set(s)
Passive 1:10 250MHz - BNC 68.9554-28 1 CAT III, CAT IV 600 V, 1000 V SET Isoprobe CAT III 1000 V, CAT IV 600 V -
RS Stock No. 825-1215
Mfr. Part No.68.9434-23
MYR336.26
1 Set
Set(s)
Passive 1:100 500MHz - BNC 68.9434-23 1 CAT III 300V SET Isoprobe CAT III 300 V -
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