5000 Series Compatible Probes

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Active Differential Probes
High-Voltage Differential Probes
Single-Ended Active Probes
Passive Probes
Current Probes

Active Differential Probes

InfiniiMax probes provide a versatile probing solution for both single-ended active and differential probing. InfiniiMax probes consist of the probe amplifiers listed below and a large assortment of probing heads that attach to the probe amplifiers. All InfiniiMax probes connect to the oscilloscope using an AutoProbe interface. Other 1131/2/4A InfiniiMax probes are also compatible with all 5000 Series probes. The InfiniiMax II 1168B/69B and InfiniiMax III N2800A/01A/02A/03A are not compatible with the InfiniiVision Series.

Model	Type	Interface	Bandwidth	Attenuation	Input Z Differential	Dynamic Range
1130B	Active Differential InfiniiMax I	AutoProbe 1	1.5 GHz	10:1	50 kΩ	±2.5V

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
1141A	High Voltage	BNC	200 MHz	1:1	1 MΩ, 7 pF	200V (DC+peak AC)
N2790A	High Voltage	AutoProbe 1	100 MHz	10:1/100:1	8 MΩ, 3.5 pF	±1400V
N2791A	High Voltage	BNC	25 MHz	50:1/500:1	8 MΩ, 8 pF	±700V
N2792A	High Voltage	BNC	200 MHz	10:1	1 MΩ, 3.5 pF	±20V (differential) ±60V (common mode)
N2793A	High Voltage	BNC	800 MHz	10:1	200 kΩ, 1 pF	±15V (differential) ±40V (common mode)
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
N2795A	Single-Ended Active	AutoProbe 1	1 GHz	10:1	1 MΩ, 1 pF	±8V
N2796A	Single-Ended Active	AutoProbe 1	2 GHz	10:1	1 MΩ, 1 pF	±8V
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
1156A Discontinued	Single-Ended Active	AutoProbe 1	1.5 GHz	10:1	100 kΩ, 0.8pF	5 Vp-p
1157A Discontinued	Single-Ended Active	AutoProbe 1	2.5 GHz	10:1	100 kΩ, 0.8pF	5 Vp-p
1158A Discontinued	Single-Ended Active	AutoProbe 1	4 GHz	10:1	100 kΩ, 0.8pF	5 Vp-p

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
10073C Discontinued	Passive	BNC	500 MHz	10:1	1 MΩ, 50 pF	400 Vpk
10073D	Passive	BNC	500 MHz	10:1	1 MΩ, 50 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
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
N2862A Discontinued	Passive	BNC	150 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
N2874A	Passive Resistive Divider	BNC	1.5 GHz	10:1	500Ω, 2 pF	8.5 CAT I
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.