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High-Voltage Differential Probes
Both passive and active high-voltage probes are available. To ensure safe operation, read the user's guide before using the probe. High voltage differential probes allow for safe and accurate floating signal measurements between two voltage points where neither point is referenced to ground. Enabled by high CMRR, a high voltage differential probe simplifies the measurement challenges found in noisy, high common-mode power electronics environments.
| Model | Type | Interface | Bandwidth | Attenuation | Input Z Differential | Dynamic Range |
|---|---|---|---|---|---|---|
| High Voltage |
BNC + USB (DP0030A) |
100 MHz (DP0030A) |
(High / Low) 250/25:1 (DP0030A) |
5 MΩ || 2 pF (DP0030A) |
Max. Differential Measurement Range (DC + AC peak) ±750 / ±75 V (DP0030A) |
|
| N2791A | High Voltage | BNC | 25 MHz | 50:1/500:1 | 8 MΩ, 8 pF | ±700V |
| N2891A | High Voltage | BNC | 70 MHz | 100:1/1000:1 | 100 MΩ, 7 pF | ±7000V@1000:1 ±700V@100:1 |
Single-Ended Active Probes
Single-ended active probes contain a small, active amplifier built into the probe body near the probe tip. This arrangement makes it possible to keep the probe input capacitance very low, usually less than 2 pF. This low capacitance results in high input impedance on high frequencies. It has the best overall combination of resistive and capacitive loading. With such low loading, active probes can be used on high-impedance circuits that would be seriously loaded by passive probes. Active probes are the least intrusive of all the probes.
| Model | Type | Interface | Bandwidth | Attenuation | Input Z | Dynamic Range |
|---|---|---|---|---|---|---|
| 1144A
Discontinued |
Single-Ended Active | BNC | 800 MHz | 10:1 | 1 MΩ, 2 pF | ±7V |
| 1145A
Discontinued |
Single-Ended Active | BNC | 750 MHz | 10:1 | 1 MΩ, 2 pF | ±6V |
Passive Probes
The most widely used type of oscilloscope probe is the passive probe. Passive probes are also the most rugged and economical. There are no active components such as transistors or amplifiers in the probe, and therefore passive probes do not need to be powered.
The N2870/1/2/3A and N2875A require the E2697A high impedance adapter.
| Model | Type | Interface | Bandwidth | Attenuation | Input Z | Dynamic Range |
|---|---|---|---|---|---|---|
| 10070C
Discontinued |
Passive | BNC | 20 MHz | 1:1 | 1 MΩ, 70 pF | 400 Vpk |
| 10070D | Passive | BNC | 20 MHz | 1:1 | 1 MΩ, 70 pF | 400 Vpk |
| 10076A
Discontinued |
Passive High-Voltage |
BNC | 250 MHz | 100:1 | 1 MΩ, 20 pF | 4 kVpk |
| 10076B | Passive High Voltage |
BNC | 250 MHz | 100:1 | 66.7 MΩ, ≈3 pF | 4 kVpk |
| 10076C | Passive High Voltage |
BNC | 500 MHz | 100:1 | 66.7 MΩ, ≈3 pF | 3.7kVpk |
| 54006A | Passive Resistive Divider |
SMA | 6 GHz | 10:1 or 20:1 | 500Ω | 20 Vpk |
| N2771A
Discontinued |
Passive High Voltage |
BNC | 50 MHz | 1000:1 | 1 MΩ, 20 pF |
30 kVpk |
| N2771B | Passive High Voltage |
BNC | 50 MHz | 1000:1 | 1 MΩ, 20 pF | 30 kVpk |
| N2840A |
High Impedance Passive |
BNC | 50 MHz | 10:1 | 10 MΩ | 300 VRMS CAT II |
| N2841A |
High Impedance Passive |
BNC | 150 MHz | 10:1 | 10 MΩ | 300 VRMS CAT II |
| N2842A |
High Impedance Passive |
BNC | 300 MHz | 10:1 | 10 MΩ | 300 VRMS CAT II |
| N2843A |
High Impedance Passive |
BNC | 500 MHz | 10:1 | 10 MΩ | 300 VRMS CAT II |
| N2853A |
High Impedance Passive |
BNC | 350 MHz | 10:1 | 10 MΩ | 300 VRMS CAT II |
| N2862A
Discontinued |
Passive | BNC | 50 MHz | 10:1 | 10 MΩ | 300V |
| N2862B | Passive | BNC | 150 MHz | 10:1 | 10 MΩ | 300V |
| N2863B | Passive | BNC | 300 MHz | 10:1 | 10 MΩ | 300V |
| N2870A | Passive | BNC | 35 MHz | 1:1 | 1 MΩ, 39 pF | 55V CAT II |
| N2871A | Passive | BNC | 200 MHz | 10:1 | 10 MΩ, 9.5 pF | 400V CAT I 300V CAT II |
| N2872A | Passive | BNC | 350 MHz | 10:1 | 10 MΩ, 9.5 pF | 400V CAT I 300V CAT II |
| N2873A | Passive | BNC | 500 MHz | 10:1 | 10 MΩ, 9.5 pF | 400V CAT I 300V CAT II |
| N2875A | Passive | BNC | 500 MHz | 20:1 | 20 MΩ, 5.6 pF | 400V CAT I 300V CAT II |
| N2876A | Passive Resistive Divider |
BNC | 1.5 GHz | 100:1 | 5 kΩ, 2.6 pF | 21 V CAT I |
| N2889A | Passive | BNC | 350 MHz | 10:1/1:1 | 10 MΩ | 300V |
| N2890A | Passive | BNC | 500 MHz | 10:1 | 10 MΩ | 300V |
| N2894A | Passive | BNC | 700 MHz | 10:1 | 10 MΩ, 9.5 pF | 400V CAT I 300V CAT II |
Current Probes
Current probes sense the current flowing through a conductor and convert it to a voltage that can be viewed and measured on an oscilloscope. Keysight current probes use a hybrid technology that includes a Hall-effect sensor, which senses the DC current, and a current transformer, which senses the AC current. Using split core construction, the current probe easily clips on and off of a conductor, making it unnecessary to make an electrical connection to the circuit. Measurement bandwidths from DC to 100 MHz are available.
| Model | Type | Interface | Bandwidth | Attenuation | Dynamic Range |
|---|---|---|---|---|---|
| N7040A/1A/2A | Current | BNC |
LF (-3dB) Bandwidth N7040A: 3.0 Hz N7041A: 12 Hz N7042A: 9.2 Hz HF (-3dB) Bandwidth N7040A: 23 MHz N7041A: 30 MHz N7042A: 30 MHz |
N7040A : 0.002 V/A (500:1) N7041A : 0.01 V/A (100:1) N7042A : 0.02 V/A (50:1) |
Peak Current N7040A: 3000A N7041A: 600A N7042A: 300 A Absolute Maximum di/dt Ratings N7040A: 100kA/μs (peak) / 1.2kA/μs (rms) N7041A; 100kA/μs (peak) / 1.2kA/μs (rms) N7042A: 70kA/μs (peak) / 1.2kA/μs (rms) |
| 1146A | Current | BNC | 100 kHz | 0.1V/A or 0.01V/A |
max of: peak: 100A or continuous: 15Arms |
| 1146B | Current | BNC | 100 kHz | 0.1V/A or 0.01V/A |
maximum 100A dc or peak ac |
| N2780B | Current | BNC | 2 MHz | 0.01V/A | max of: peak: 700A or continuous: 500Arms |
| N2781B | Current | BNC | 10 MHz | 0.01V/A | max of: peak: 300A or continuous: 150Arms |
| N2782B | Current | BNC | 50 MHz | 0.1V/A | max of: peak: 50A or continuous: 30Arms |
| N2783B | Current | BNC | 100 MHz | 0.1V/A | max of: peak: 50A or continuous: 30Arms |