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 Calibrated Series Safety Category Rise Time
RS Stock No. 796-6702
Mfr. Part No.P6015A
BrandTektronix
£2,020.00
Each
Units
High Voltage 1:1000 75MHz 20kV - P6015A 1 - - - - - 4ns
RS Stock No. 781-0801
Mfr. Part No.TCP312A
BrandTektronix
£1,990.00
Each
Units
Current - 100MHz - BNC TCP312A 1 CAT II 150 V, 300 V - TCP300 CAT II 150 V, CAT II 300 V 3.5ns
RS Stock No. 781-0813
Mfr. Part No.P6021A
BrandTektronix
£1,710.00
Each
Units
Current - 60MHz - BNC P6021A 1 - - - - - -
RS Stock No. 366-9141
Mfr. Part No.TT-HVP15 HF
BrandTestec
£174.80
Each
Units
Passive 1:1000 50MHz 10kV BNC TT-HVP15 HF - CAT I - - HVP - 7ns
RS Stock No. 122-8905
Mfr. Part No.FLUKE-124B/UK/S
BrandFluke
£1,247.68
Each
Units
- - 40MHz - - 124B/UK/S - CAT III, CAT IV 600 V, 750 V - 120B CAT III 750 V, CAT IV 600 V <8.75ns
RS Stock No. 745-0705
Mfr. Part No.PPE4KV
BrandLeCroy
£500.00
Each
Units
Passive 1:100 400MHz - BNC PPE4KV - CAT I - - PEE CAT I -
RS Stock No. 122-8909
Mfr. Part No.FLUKE-124B/UK/S
BrandFluke
£1,341.68
Each
Units
- - 40MHz - - 124B/UK/S - CAT III, CAT IV 600 V, 750 V RSCAL 120B CAT III 750 V, CAT IV 600 V <8.75ns
RS Stock No. 122-8910
Mfr. Part No.FLUKE-124B/UK/S
BrandFluke
£1,374.68
Each
Units
- - 40MHz - - 124B/UK/S - CAT III, CAT IV 600 V, 750 V UKAS 120B CAT III 750 V, CAT IV 600 V <8.75ns
RS Stock No. 744-2518
Mfr. Part No.Fluke VPS40-III
BrandFluke
£154.19
Each
Units
Passive 1:10 40MHz - - VPS40-III 3 CAT II, CAT III 600 V, 1000 V - 120 CAT II 1000 V, CAT III 600 V -
RS Stock No. 712-1141
Mfr. Part No.P5122
BrandTektronix
£290.00
Each
Units
High Voltage, Passive 1:100 200MHz - - P5122 - CAT II 600 V ac, 1000 V ac - TPS2000 CAT II 1000 V ac, CAT II 600 V ac 2.2ns
RS Stock No. 512-5003
Mfr. Part No.MX9030-Z
BrandMetrix
£300.24
Each
Units
Differential, Gripper 1:1, 1:20, 1:200 30MHz - - MX 9030-Z 5 CAT IV 600V - - CAT IV 600 V 11.7ns
RS Stock No. 512-6078
Mfr. Part No.TT-SI 9010
BrandTestec
£694.87
Each
Units
Active, Differential 1:100, 1:1000 70MHz 5kV BNC TT-SI 9010 - CAT I, CAT II 2500 V ac, 7000 V ac/dc - SI CAT I 2500 V ac, CAT II 7000 V ac/dc 5ns
RS Stock No. 384-878
Mfr. Part No.VPS210-R
BrandFluke
£203.00
Each
Units
Passive 1:10 200MHz - - VPS210 5 CAT II, CAT III 30 V, 600 V, 1000 V - ScopeMeter 190 CAT II 1000 V, CAT II 3 V, CAT III 600 V -
RS Stock No. 733-6145
Mfr. Part No.N2791A
£535.00
Each
Units
Differential 1:10, 1:100 25MHz 700V BNC N2791A - CAT II 1000V ac - N CAT II 1000 V ac 14ns
RS Stock No. 745-0702
Mfr. Part No.PPE6KV
BrandLeCroy
£1,000.00
Each
Units
High Voltage, Passive 1:1000 400MHz - BNC PPE6KV - CAT I - - PEE CAT I -
RS Stock No. 752-7357
Mfr. Part No.THDP0200
BrandTektronix
£1,890.00
Each
Units
Differential, High Voltage 1:50, 1:500 200MHz 1.5kV BNC THDP0200 - CAT II, CAT III 600 V, 1000 V - THD CAT II 1000 V, CAT III 600 V 1.8ps
RS Stock No. 726-0038
Mfr. Part No.TPP0200
BrandTektronix
£60.00
Each
Units
Passive 1:10 200MHz 300V BNC TPP0200 - CAT II 300V - TPP CAT II 300 V -
RS Stock No. 734-5013
Mfr. Part No.P5100A
BrandTektronix
£492.00
Each
Units
Passive 1:100 500MHz 1kV - P5100A - CAT II 1000V ac - 5000 CAT II 1000 V ac 700ps
RS Stock No. 209-7860
Mfr. Part No.P6243
BrandTektronix
£1,946.16
Each
Units
Active 1:10 1GHz - BNC P6243 - - - - - - 350ps
RS Stock No. 734-5029
Mfr. Part No.P5200A
BrandTektronix
£1,020.00
Each
Units
Differential, High Voltage 1:50, 1:500 50MHz 1kV - P5200A - CAT II 1000V - P52XXA CAT II 1000 V -
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