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 Minimum Bandwidth Maximum Conductor Size
RS Stock No. 163-7603
Mfr. Part No.GE-1521
BrandElditest
TWD1,643.00
Each
units
Gripper, Passive, Voltage 1x, 10x 150MHz - BNC GE-1521 - CAT I 300V GE 1500 CAT I 300V 2.3 ns, 20ns - -
RS Stock No. 146-6620
BrandRS PRO
TWD5,806.00
Each
units
Miniature 1:10 500MHz 1.5kV BNC - 1 CAT I, CAT II 400 Vrms, 500 Vrms - CAT I 500 Vrms, CAT II 400 Vrms <0.7ns - -
RS Stock No. 415-455
Mfr. Part No.VPS212-R
BrandFluke
TWD9,623.00
Each
units
Passive 1:10 200MHz - - VPS212 5 CAT II, CAT III 30 V, 600 V, 1000V ScopeMeter 190 CAT II 1000 V, CAT II 3 V, CAT III 600V - - -
RS Stock No. 174-8872
Mfr. Part No.HVD3206A-6M
TWD119,433.00
Each
units
Differential 1:50, 1:500 80MHz 1kV - - 1 CAT I, CAT III 1000 Vrms, 1500 V dc, 2000V HVD3000A CAT I 2000 V, CAT III 1000 Vrms, CAT III 1500 V dc 4.4ns - -
RS Stock No. 189-4510
Mfr. Part No.P01120127
TWD13,106.00
Each
units
AC/DC - DC → 30kHz - - PAC27 - CAT III, CAT IV 300 V, 600 V PAC CAT III 600V, CAT IV 300V - - 39 mm / Bar : 2 x 25mmmm
RS Stock No. 898-6788
Mfr. Part No.TA112
TWD31,143.00
Each
units
Active 1:10 1GHz 33V BNC - 2 - 20V - - - - -
RS Stock No. 702-3899
Mfr. Part No.N2871A
TWD10,520.00
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. 201-1869
Mfr. Part No.RT-ZD20
TWD193,578.00
Each
units
- 10:1 1.5GHz - BNC RT-ZD - - - - - - - -
RS Stock No. 201-1877
Mfr. Part No.RT-ZS10
TWD60,919.00
Each
units
- 10:1 1GHz - BNC RT-ZS - - - - - - - -
RS Stock No. 898-6820
Mfr. Part No.TA133
TWD6,608.00
Each
units
Passive 1:10 500MHz - BNC - 1 CAT II - - - 700ps - -
RS Stock No. 668-7161
Mfr. Part No.TDP1500
BrandTektronix
TWD192,458.00
Each
units
Active, Differential 1:1, 1:10 1.5GHz 25V - TDP1500 - - - TDP - 265ps - -
RS Stock No. 144-4394
Mfr. Part No.RP4030
TWD124,643.00
Each
units
Active 1.2 x Attenuation 4GHz - - RP4030 - - - - - - - -
RS Stock No. 185-2140
Mfr. Part No.N2843A
TWD6,918.00
Each
units
Passive 10:1 500MHz - - N2843A 1 CAT II - - CAT II 300 Vrms 700ps - -
RS Stock No. 123-6479
BrandRS PRO
TWD32,461.00
Each
units
Differential, High Voltage 1:50, 1:500 70MHz 1.5kV - - 1 - - - - - - -
RS Stock No. 734-5010
Mfr. Part No.TPP0850
BrandTektronix
TWD37,322.00
Each
units
High Voltage, Passive 1:50 800MHz 1kV - TPP0850 - CAT II 1000V ac 4000, 5000 CAT II 1000 V ac 525ps - -
RS Stock No. 724-0933
Mfr. Part No.PP008-1
TWD16,352.00
Each
units
Passive 1:10 500MHz 400V BNC PP008-1 - CAT I, CAT II 300 V ac, 400V ac PP CAT I 400 V ac, CAT II 300 V ac - - -
RS Stock No. 733-6139
Mfr. Part No.N2795A
TWD43,978.00
Each
units
Active 1:10 1GHz - - N2795A - - - N - 350ps - -
RS Stock No. 922-5261
Mfr. Part No.PP024-2
TWD24,032.00
Each
units
Passive 1:10 500MHz - BNC PP024 1 CAT I, CAT II 400 Vrms, 500 Vrms - CAT I 500 Vrms, CAT II 400 Vrms 700ps - -
RS Stock No. 797-3396
Mfr. Part No.TPP0250
BrandTektronix
TWD12,311.00
Each
units
Passive 1:10, 1:2 250MHz - - TPP0250 - - - TPP0 CAT II 300V - - -
RS Stock No. 678-4000
Mfr. Part No.PMS211A
BrandPMK
TWD2,202.00
Each
units
Passive 1:10 150MHz - BNC PMS211A - CAT II 300V PMS CAT II 300V 2.4ns - -