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. 179-9565
BrandRS PRO
£452.51
Each
Units
Active 1:10, 1:100 25MHz 700V BNC - - CAT III - - - - 14ns -
RS Stock No. 224-1219
Mfr. Part No.15101
BrandTestec
£283.81
Each
Units
Active, Differential 1:10, 1:100 25MHz 700V BNC TT-SI 9001 - CAT III 1000 V ac, 1400V ac/dc - SI CAT III 1000 V, CAT III 1400V 14ns -
RS Stock No. 898-6744
Mfr. Part No.TA041
£269.00
Each
Units
Active, Differential 1:10, 1:100 25MHz 700V - - 2 CAT III 700 V, ±700V - - 700 V, CAT III ±700V - -
RS Stock No. 224-1225
Mfr. Part No.SI-9002
BrandTestec
£278.25
Each
Units
Active, Differential 1:20, 1:200 25MHz 1kV - TT-SI 9002 - CAT III 1000 V ac, 1400V ac/dc - SI CAT III 1000 V, CAT III 1400V 14ns -
RS Stock No. 898-6750
Mfr. Part No.TA044
£639.00
Each
Units
Active, Differential 1:100, 1:1000 70MHz 5kV - - 2 CAT I 2500 V, 7000V ac/dc - - 2500 V, CAT I 7000V 5ns -
RS Stock No. 512-6078
Mfr. Part No.TT-SI 9010
BrandTestec
£687.75
Each
Units
Active, Differential 1:100, 1:1000 70MHz 5kV BNC TT-SI 9010 - CAT I, CAT II 2500 V ac, 7000V ac/dc - SI CAT I 2500 V, CAT II 7000V 5ns -
RS Stock No. 209-7860
Mfr. Part No.P6243
BrandTektronix
£2,325.60
Each
Units
Active 1:10 1GHz - BNC P6243 - - - - - - 350ps -
RS Stock No. 898-6766
Mfr. Part No.TA057
£269.00
Each
Units
Active, Differential 1:20, 1:200 25MHz 1kV - - 2 CAT III 1000 V, ±1400V - - 1000 V, CAT III ±1400V - -
RS Stock No. 668-7151
Mfr. Part No.P6245
BrandTektronix
£3,220.00
Each
Units
Active 1:10 1.5GHz - BNC P6245 - - - - - - 250ps -
RS Stock No. 448-4351
Mfr. Part No.15120
BrandTestec
£444.47
Each
Units
Active, Differential 1:100, 1:1000 100MHz 1kV BNC TT-SI 9110 - CAT III 1000 V ac, 1400V ac/dc - SI CAT III 1000 V, CAT III 1400V 3.5ns -
RS Stock No. 898-6769
Mfr. Part No.TA058
£339.00
Each
Units
Active, Differential 1:10 50MHz 600V - - 2 CAT I 600 V, ±700V - - 600 V, CAT I ±700V - -
RS Stock No. 898-6741
Mfr. Part No.TA043
£459.00
Each
Units
Active, Differential 1:10, 1:100 100MHz 700V - - 2 CAT III 500 V, 700V ac/dc - - 500 V, CAT III 700V 3.5ns -
RS Stock No. 738-9353
Mfr. Part No.ZD200
£1,960.00
Each
Units
Active, Differential 1:1 200MHz 60V - ZD200 - - - - ZD - 1.75ns -
RS Stock No. 661-3286
Mfr. Part No.TAP1500
BrandTektronix
£3,240.00
Each
Units
Active 1:10 1.5GHz 10V - TAP1500 - - - - TAP - 267ps -
RS Stock No. 898-6747
Mfr. Part No.TA042
£419.00
Each
Units
Active, Differential 1:100, 1:1000 100MHz 1kV - - 2 CAT III 1000 V, 1400V ac/dc - - 1000 V, CAT III 1400V 3.5ns -
RS Stock No. 512-6438
Mfr. Part No.TT-SI 9101
BrandTestec
£630.00
Each
Units
Active, Differential 1:10, 1:100 100MHz 1kV BNC TT-SI 9101 - CAT III 1000V ac - SI CAT III 1000V 3.5ns -
RS Stock No. 672-1706
Mfr. Part No.ZS1000
£1,120.00
Each
Units
Active 1:10 1GHz - ProBus ZS1000 - - - - ZS - - -
RS Stock No. 898-6788
Mfr. Part No.TA112
£706.43
Each
Units
Active 1:10 1GHz 33V BNC - 2 - 20V - - - - -
RS Stock No. 733-6139
Mfr. Part No.N2795A
£1,041.00
Each
Units
Active 1:10 1GHz - - N2795A - - - - N - 350ps -
RS Stock No. 878-7610
Mfr. Part No.ZS1500
£2,249.10
Each
Units
Active 1:10 1.5GHz - ProBus ZS1500 2 - - - ZS - - -