DATA SHEE T N2870A Series Passive Probes and Accessories
Introduction The N2870A Series passive probe family sets new standards in high performance probing of up to 1.5 GHz bandwidth. These general purpose probes and accessories offer high quality measurements at a very reasonable price. Faithful reproduction of signals The N2870A Series passive probes offer DC to 35 MHz, 200 MHz, 350 MHz, 500 MHz and 1.5 GHz bandwidths and various attenuation factors to address a wide range of measurement needs.
Easy Access to Signals The compact design with a 2.5 mm probe tip diameter provides better visibility to the circuit under test than conventional 5 mm or 3.5 mm probe tips. This makes it easier to probe today’s fine pitched space ICs and components. In addition, the replaceable probe tip is spring loaded, keeping it from slipping off the device you are probing. All N2870A Series probes come installed with one spring-loaded probe tip and four spare probe tips (2 spring-loaded tips, and 2 rigid tips).
Variety of Connections Use the optional accessory kits to provide access to signals and components that are difficult to probe. Figure 4. The Keysight N2885A PCB adapter sockets are designed to solder into a printed circuit board (PCB) as test points to minimize ground inductance and maximize signal fidelity. This package contains 25 sockets. Figure 5. Micro SMD clips were specially designed to provide fast and convenient hands-free probing of surface mount chip resistors or capacitors.
Variety of Connections (Continued) Use the optional accessory kits to provide access to signals and components that are difficult to probe. Figure 6. With today’s miniature IC- and component-packaging techniques, probing can be a considerable challenge. Use 0.5 mm QFP IC clips with TQFP/ PQFP packages with 0.5 mm lead pitch or greater, or use pico-hook clips made for connections over components or wires with leads up to 0.04” diameter or smaller. Figure 7.
Electrical Characteristics Model number N2870A Bandwidth (–3 dB) 35 MHz Attenuation ratio 1:1 N2871A 200 MHz 10:1 39 pF (+oscilloscope) 9.5 pF N2872A 350 MHz 10:1 9.5 pF 10 MΩ N2873A 500 MHz 10:1 9.5 pF 10 MΩ N2874A N2875A 1.5 GHz 500 MHz 10:1 20:1 1.8 pF 5.6 pF 500 Ω 20 MΩ N2876A 1.5 GHz 100:1 2.2 pF 5 kΩ 1. 2.
Typical voltage derating mains isolated 1000 Amplitude AC rms [V]sinus N2871A + N2872A + N2873A + N2875A 100 N2876A 10 N2874A 1 100 K 1M 10 M 100 M Frequency [Hz] 1G 10 G Figure 9. N2870A Series amplitude vs. frequency characteristics. Typical input impedance 100 M N2875A 10 M | Z | [ohm] 1M N2870A 100 K 10 K 1K 100 N2876A N2874A N2871A + N2872A + N2873A 10 10 100 1K 10 K 100 K 1M 10 M 100 M 1G 10 G Frequency [Hz] Figure 10. N2870A Series input impedance vs.
Standard Accessories Rigid probe tips, qty 2 Spring-loaded probe tips, qty 2 Sprung hook 2.5 mm Short sprung hook 2.5 mm Ground blade 2.5 mm with 2 copper pads IC cap 2.5-0.5 mm green IC cap 2.5-0.65 mm blue IC cap 2.5-0.8 mm grey IC cap 2.5-1.0 mm brown IC cap 2.5-1.27 mm black Insulating cap 2.5 mm Protection cap 2.5 mm BNC adapter 2.5 mm Ground spring 2.5 mm Ground lead 15 cm Trimmer tool Color coded rings 3x4 User’s guide manual Optional Accessories IC Cap 2.5-0.5 green IC Cap 2.5-0.65 blue IC Cap 2.
Optional Accessories (Continued) Ground spring 2.5 10 Self-adhesive Cu-pads (2x2 cm) Ground blade 2.5 Ground lead 2.5 to mini alligator clip Set of 5 spring tips gold plated 0.5mm Set of 5 solid tips cuBe 0.5 mm Adapter 2.5 to 2 mm banana plug Adapter 2.5 to 0.8 mm socket Dual adapter 2.5 to 0.8 mm sockets Sprung hook 2.5 mm Short sprung hook 2.5 mm Adapter 2.5 to 4 mm banana plug Pico hook black Pico hook red BNC adapter 2.5 mm PCB adapter kit 2.5 mm QFP IC-Clips 13 mm long down to 0.
Replacement Parts Part number N4831A N4837A 0960-2907 0960-2908 N4836A N4829A N4838A N4863A N4864A Description Sprung Hook Adapter 2.5mm for N2870A,71A,72A,73A,75A (qty 2) Ground Lead 15cm for N2870A Series probes (qty 2) Short Spring Hook 2.5mm for N2874A and N2876A 1.5 GHz passive probe 10 Self-adhesive Copper-pads 2X2cm for N2870A Series probes Dual Lead-Adapter for N2870A Series probes (qty 2) Probe tip kit (10 each rigid and spring loaded tip) 2.5 mm ground spring (qty 2) 2.
Keysight Oscilloscopes Multiple form factors from 20 MHz to > 90 GHz | Industry leading specs | Powerful applications Learn more at: www.keysight.com For more information on Keysight Technologies’ products, applications or services, please contact your local Keysight office. The complete list is available at: www.keysight.com/find/contactus Find us at www.keysight.com This information is subject to change without notice.
