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 Minimum Bandwidth
RS Stock No. 702-3902
Mfr. Part No.N2873A
£364.00
Each
Units
Passive 1:10 500MHz - BNC N2873A - CAT I, CAT II 300 V, 400V - N2870A CAT I 400 V, CAT II 300V - -
RS Stock No. 499-598
Mfr. Part No.TCP404XL
BrandTektronix
£4,610.00
Each
Units
AC/DC - DC to 2 MHz - - TCP404XL - CAT I, CAT II, CAT III 300 V, 600 V - TCP CAT I 600 V, CAT II 600 V, CAT III 300 V - -
RS Stock No. 499-627
Mfr. Part No.TCPA400
BrandTektronix
£2,770.00
Each
Units
AC/DC - DC → 2 MHz - - TCPA400 - CAT I, CAT II, CAT III 300 V, 600 V - TCP CAT I 600 V, CAT II 600 V, CAT III 300 V - -
RS Stock No. 714-0035
Mfr. Part No.10074D
£196.00
Each
Units
Passive 1:10 150MHz - BNC 10074D - CAT I, CAT II 400 V, 500V - - CAT I 500 V, CAT II 400V 2.33ns -
RS Stock No. 716-7419
Mfr. Part No.VPS420-R
BrandFluke
£221.00
Each
Units
Passive 1:100 150MHz - - VPS420 R 1 CAT III 2000V - ScopeMeter 190 CAT III 2000V - -
RS Stock No. 672-1706
Mfr. Part No.ZS1000
£1,120.00
Each
Units
Active 1:10 1GHz - ProBus ZS1000 - - - - ZS - - -
RS Stock No. 512-5019
Mfr. Part No.MTX1032-B
BrandMetrix
£383.46
Each
Units
Differential 1:1, 1:10, 1:100 30MHz - BNC MTX 1032-B 4 CAT I, CAT II, CAT III 600V - - CAT I, CAT II, CAT III 600V 11.7ns -
RS Stock No. 898-6801
Mfr. Part No.TA189
£319.00
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 715-8743
Mfr. Part No.TPP0201-PK10
BrandTektronix
£56.40
Each (In a Pack of 10)
Units
Passive 1:10 200MHz 300V BNC TPP0201 - CAT I, CAT II 300 V ac, 300 V, 400V ac - TPP CAT I 400 V, CAT II 300 V, CAT II 300V 2.3ns -
RS Stock No. 668-7167
Mfr. Part No.TDP1000
BrandTektronix
£4,410.00
Each
Units
Differential, High Voltage 1:5, 1:50 1GHz 30V - TDP1000 - - - - TDP - 350ps -
RS Stock No. 918-6866
Mfr. Part No.HVD3206-6M
£2,200.00
Each
Units
Differential 1:50, 1:500 80MHz 1kV - HVD3206-6M 2 CAT I, CAT III 1000 Vrms, 1500 V dc, 2000 (DC + Peak AC) V - - Cat I 2000 (DC + Peak AC) V, Cat III 1000 Vrms, Cat III 1500 V dc 4.4ns -
RS Stock No. 702-3899
Mfr. Part No.N2871A
£249.00
Each
Units
Passive 1:10 200MHz - BNC N2871A - CAT I, CAT II 300 V, 400V - N2870A CAT I 400 V, CAT II 300V - -
RS Stock No. 714-0039
Mfr. Part No.10073D
£377.00
Each
Units
Passive 1:10 500MHz - BNC 10073D - CAT II 400V - - CAT II 400V 700ps -
RS Stock No. 799-9008
Mfr. Part No.P01120057A
£544.75
Each
Units
AC - 50kHz - - D38N - CAT III, CAT IV 300 V, 600 V - D CAT III 600 V, CAT IV 300 V - -
RS Stock No. 734-5035
Mfr. Part No.P5210A
BrandTektronix
£3,310.00
Each
Units
Differential, Gripper, High Voltage 1:100, 1:1000 50MHz 5.6kV - P5210A - CAT I, CAT III 1000 V, 2300V - P52XXA CAT I 2300 V, CAT III 1000V - -
RS Stock No. 898-6788
Mfr. Part No.TA112
£706.43
Each
Units
Active 1:10 1GHz 33V BNC - 2 - 20V - - - - -
RS Stock No. 797-3390
Mfr. Part No.TPP0500B
BrandTektronix
£482.00
Each
Units
Passive 1:10 500MHz 300V Hook Clip TPP0500B 1 CAT II 300V - TPP0 CAT II 300V - -
RS Stock No. 825-1196
Mfr. Part No.68.9554-28
BrandStaubli
£53.09
1 Set
Set(s)
Passive 1:10 250MHz - BNC 68.9554-28 1 CAT III, CAT IV 600 V, 1000V - SET Isoprobe CAT III 1000 V, CAT IV 600V - -
RS Stock No. 918-6857
Mfr. Part No.PP006C
£255.00
Each
Units
Passive 1:10 500MHz - - PP006C - CAT I, CAT II 300 V, 350 V, 1400V - WaveJet Touch Cat I 1400 V, Cat I 350 V, Cat II 300V - -
RS Stock No. 733-6139
Mfr. Part No.N2795A
£1,041.00
Each
Units
Active 1:10 1GHz - - N2795A - - - - N - 350ps -