# Keysight N2889A 350 MHz Switchable 1:1/10:1 Passive Probe # Keysight N2889A 350 MHz Switchable 1:1/10:1 Passive Probe ## Key Features At A Glance - 10:1 attenuation ratio standard across the family (N2889A offers switchable 1:1/10:1) - Bandwidth options from 50 MHz to 500 MHz to match a wide range of oscilloscope channels - 10 MΩ input resistance when terminated into 1 MΩ for low circuit loading - Maximum input voltage of 300 V RMS (mains isolated, CAT II) at 10:1 attenuation - Probe ID supported on all models except N2889A for automatic recognition by compatible scopes - Compatible with Keysight InfiniiVision and Infiniium Series oscilloscopes with 1 MΩ BNC input - N284xA series are frequency-tuned versions offering more linear frequency response with Keysight oscilloscopes - Conformance to IEC-61010-031:2015 safety standard The Keysight N28xxA/B Passive Probes are a family of low-cost, general-purpose 10:1 passive probes covering bandwidths from 50 MHz through 500 MHz. The family includes the N2840A, N2841A, N2842A, N2843A, N2853A, N2862B, N2863B, N2889A, and N2890A, each tuned to a specific bandwidth and rise time tier. The N2889A is unique in the family in offering a switchable 1:1 / 10:1 attenuation ratio selected by a switch in the probe handle. These probes are designed for general-purpose voltage measurement on oscilloscope channels with 1 MΩ BNC inputs. Per the datasheet, the probes are compatible with Keysight InfiniiVision and Infiniium Series oscilloscopes. The N284xA series — N2840A, N2841A, N2842A, N2843A, and N2853A — are described as frequency-tuned versions of the N2862B, N2863B, N2889A, and N2890A, offering more linear frequency response when paired with Keysight oscilloscopes. ValueTronics International is an authorized source for Keysight test and measurement accessories, with passive probes and supporting components stocked alongside the oscilloscopes they pair with. Each {{CONDITION}} probe shipped from our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois is processed by the same staff who handle the host instruments — so probe model, accessory completeness, and bandwidth match against the intended oscilloscope channel are verified before the order leaves the facility. ## Brand Heritage Keysight Technologies was established in 2014 when Agilent Technologies separated its electronic measurement business into a standalone company. Agilent itself was created in 1999 as a spinoff of the test and measurement, semiconductor, and chemical analysis businesses of Hewlett-Packard. The Keysight probe and oscilloscope product lines carry forward an engineering heritage that traces directly back to HP's original test and measurement organization. ## Compare Other Models in This Series The N28xxA/B family is structured as a set of 10:1 passive probes spanning bandwidths from 50 MHz at the entry tier through 500 MHz at the top, with rise times scaling from 7 ns down to 700 ps. The datasheet groups the models as the N284xA frequency-tuned series (N2840A, N2841A, N2842A, N2843A, N2853A) and their N2862B/N2863B/N2889A/N2890A counterparts, with the N284xA versions described as offering more linear frequency response with Keysight oscilloscopes. Within the family, the N2889A is the only model with a switchable attenuation ratio — selectable 1:1 or 10:1 via a switch in the probe handle — and the only model without Probe ID. All other models in the family are fixed 10:1 probes with Probe ID support. Each new probe model below is listed as its own product page with condition-matched pricing. Selection across the family is driven primarily by the bandwidth tier required by the host oscilloscope channel and the rise time of the signals being measured. The clearest differentiator between models in this family is the bandwidth and rise time tier. The N2840A sits at the entry level (50 MHz, 7 ns rise time, 15 pF input capacitance, 1.2 m cable). The N2862B and N2841A occupy the 150 MHz tier (2.33 ns rise time, 15 pF, 1.2 m). The N2863B and N2842A move up to 300 MHz with 1.16 ns rise time and 11 pF input capacitance. Beyond bandwidth, the practical differences are Probe ID support (present on every model except the N2889A), cable length (1.2 m on most models, 1.3 m on N2889A/N2890A, 2 m on N2853A), and attenuation flexibility (fixed 10:1 on all models except the switchable N2889A). Maximum input voltage, scope compensation range, and operating temperature are common across the family — see the comparison table that follows for the full specification matrix. Model Bandwidth (-3 dB) Rise Time Attenuation Ratio **N2889A** 350 MHz (at 10:1), 10 MHz (at 1:1) 1 nsec (at 10:1), 35 nsec (at 1:1) 1:1/10:1 (switchable) N2840A 50 MHz 7 nsec 10:1 N2841A 150 MHz 2.33 nsec 10:1 N2842A 300 MHz 1.16 nsec 10:1 Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Retractable hook (1) - Adjustment tools (2) - Insulating cap (1) - IC insulating cap (1) - Identification tags - green, yellow, purple and pink (2 each) - Probe tip (2) - Ground spring (1) - BNC adapter (1) - Ground lead, black 12 cm (1) ## Product Core & Specifications Specification N2840A N2862B / N2841A N2863B / N2842A / N2853A N2889A N2890A / N2843A Bandwidth (-3 dB) 50 MHz 150 MHz 300 MHz (N2863B, N2842A), 350 MHz (N2853A) 350 MHz (at 10:1), 10 MHz (at 1:1) 500 MHz Rise time (10 to 90%) 7 nsec 2.33 nsec 1.16 nsec (N2863B, N2842A), 1 nsec (N2853A) 1 nsec (at 10:1), 35 nsec (at 1:1) 700 psec Attenuation ratio 10:1 10:1 10:1 1:1/10:1 (switchable) 10:1 Input resistance (when terminated into 1 MΩ) 10 MΩ 10 MΩ 10 MΩ 10 MΩ (at 10:1), 1 MΩ (at 1:1) 10 MΩ Input capacitance 15 pF 15 pF 11 pF 11 pF (at 10:1), 60 pF (at 1:1) 11 pF Maximum input voltage 300 V RMS (or < 400 Vpk) mains isolated and CAT II 300 V RMS (or < 400 Vpk) mains isolated and CAT II 300 V RMS (or < 400 Vpk) mains isolated and CAT II 300 VRMS (or < 400 Vpk) mains isolated/CAT II (at 10:1), 150 V RMS mains isolated/CAT II (at 1:1) 300 V RMS (or < 400 Vpk) mains isolated and CAT II Scope compensation range 5-30 pF 5-30 pF 5-30 pF 5-30 pF (at 10:1) 5-30 pF Probe ID Yes Yes Yes No Yes Cable length 1.2 m 1.2 m 1.2 m (N2863B, N2842A), 2 m (N2853A) 1.3 m 1.3 m (N2890A), 1.2 m (N2843A) Safety Conformance to IEC-61010-031:2015 Operating temperature 0 to 50 °C, 80% RH non-condensing Storage temperature 0 to 50 °C, 80% RH non-condensing Altitude 2000 m / indoor use **Important:** Maximum input voltage at 10:1 attenuation: 300 V RMS (or < 400 V peak), mains isolated and CAT II. The N2889A in its 1:1 position is rated 150 V RMS, mains isolated and CAT II. See the datasheet voltage derating curves for safe operating voltage versus frequency.**Important:** These probes are compatible with Keysight InfiniiVision and Infiniium Series oscilloscopes with 1 MΩ BNC input.**Important:** Probes should be compensated to match the oscilloscope for best measurement results. A poorly compensated probe can introduce measurement errors. Low-frequency compensation should be performed before high-frequency compensation.**Important:** Maximum input voltage is subject to frequency derating; see the voltage derating curves in the datasheet (Figures 4 and 5) when operating above approximately 30 kHz.Recommended pairing: the N2856A Passive Probe Accessory Kit includes all of the standard accessories listed in the datasheet for the N2840A, N2841A, N2842A, N2843A, and N2853A passive probes. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 246.0 USD - **Vendor:** Keysight - **Type:** Volt Probe - **Tags:** Keysight, Keysight Technologies, Manufacturers, Other Equipment, Probe, product_manual_group_3, Product_new, Voltage ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 246.00 USD | In stock | ## Images - N2889A Keysight Technologies Voltage Probe --- > Source: [ValueTronics](https://valuetronics.com/products/n2889a-keysight-voltage-probe-new) > Updated: 2026-05-30