是德科技 N2751A InfiniiMode 有源差分探头，3.5GHz
N2751A Differential probe - 3.5 GHz
N2751A InfiniiMode 差分探头是新一代低成本差分有源探头，与 Keysight InfiniiVision 和 Infiniium 示波器的 AutoProbe 接口兼容。 它采用了新的操作模式，通过一个探针方便地测量差分、单端和共模信号，无需重新连接探头来改变连接。 N2751A 探头的 InfiniiMode 提供了以下操作模式。
A – B（差分）
A – 接地（单端 A）
B – 接地（单端 B）
（A+B）/2 – 接地（共模）
快捷式示波器控制
内置于探头的快捷式示波器控制功能可以让您开关探头的前照灯或控制某些常用的示波器功能，例如运行/停止、自动缩放、快速打印、快速保存等，只需按下探头上的按钮即可。
测量通用性
这些探头集成了当今通用的高速差分探测所需的许多功能和特性，特别是在数字系统设计、元件设计/表征和差分串行总线测量方面。 N2751A 系列差分探头提供 2:1 和 10:1 双衰减设置，适用于广泛的应用场合。 双衰减范围根据输入信号的大小自动配置。 这些差分探头具有 200 kΩ（差分）或 100 kΩ（每个输入单独接地）的输入电阻和 700 fF 的极低输入电容，最大限度地降低了电路负载。 凭借出色的信号保真度，该探头适用于大多数数字设计和调试应用。 而且，凭借宽动态范围（10:1 衰减比时为 10 Vpp）和偏置范围（±15 V），这些探针还可用于广泛的模拟信号测量。
技术指标：
带宽：3.5 GHz
衰减比：2:1 或 10:1（可切换）
范围：
动态范围：± 5 V 或 10 Vpp（10:1 衰减比时）、± 1 V 或 2 Vpp（2:1 衰减比时）
直流偏移范围：± 15 V
最大输入电压：30 V DC + 直流峰值
输入阻抗：
差分输入电阻：200 kΩ
单端输入电阻：100 kΩ
共模输入电阻：50 kΩ
输入电容：700 fF（使用点测式探头前端时）
连通性：
标配焊入式、插座式和点测式探针（每个探头配备两个探针）
替换部件：N2776A 差分点测式探针（3 个）、N2777A InfiniiMode 焊入式探针（3 个）和 N2778A InfiniiMode 插座式探针（3 个）
订购 N4822A 插座式探针，与 USB/以太网应用夹具一起使用（未包含在标准探头套件中）
Characteristics and specifications | |||
Model number | N2750A | N2751A | N2752A |
Probe bandwidth* (–3 dB) | 1.5 GHz | 3.5 GHz | 6 GHz (warranted), 7 GHz (typical) |
Rise time, probe only (10-90%) | 233 psec | 100 psec | 58.3 psec |
System bandwidth (with Keysight oscilloscope) | 1 GHz (with Keysight’s 1 GHz Infiniium/InfiniiVision oscilloscope) | 2.5 GHz (with Keysight’s 2.5 GHz Infiniium oscilloscope) | 4/6 GHz (with Keysight’s 4/6 GHz Infiniium oscilloscope) |
Input resistance (@DC)* | 200 kΩ ± 2 % (differential mode) 100 kΩ ± 2 % (single-ended mode) 50 kΩ ± 2 % (common mode) | ||
Input capacitance | 700 fF (with browser) | ||
Attenuation ratio (@DC) | 2:1/10:1 | ||
Input dynamic range | ± 1 V, 2 Vpp (@2:1)/± V, 10 Vpp (@10:1), mains isolated | ||
Input common mode range | ± 15 V (from DC to 100 Hz), ± 2.5 V (for >100 Hz)**** | ||
Offset range | ± 15 V | ||
Offset accuracy** | < 3 % | ||
Maximum non-destructive input voltage | ± 30 V (DC + peak AC), mains isolated | ||
*Denotes warranted electrical specifications at 2:1 attenuation mode after 20 minute warm-up, All others are typical.
** When calibrated on the oscilloscope, these characteristics are determined by the oscilloscope characteristics.
*** The N2750A Series differential probes can be used with the Infiniium 90000X/Q Series scope and the N5442A precision BNC adapter.
**** Assumes symmetric differential signals.
Characteristics, non-condensing and specifications | |||
Model number | N2750A | N2751A | N2752A |
Differential mode rejection ratio | 40 dB at 1 MHz 40 dB at 30 MHz 30 dB at 1 GHz | ||
Channel isolation, at single-ended mode | 60 dB at 1 MHz 45 dB at 30 MHz 20 dB at 1 GHz | ||
Offset gain accuracy | < 3 % before calibration < 1 % after calibration | ||
Noise referred to input | 2.5 mVrms (@2:1), 7 mVrms (@10:1) | ||
Maximum signal slew rate | 30 V/ns (differential, 10x), 15 V/ns (single-ended, 10x) | ||
Zero offset error referred to input | < 30 mV before calibration scope, < 5 mV after calibration scope | ||
Propagation delay | 6.85 nsec | ||
ESD tolerance | > 8 kV from 100 pF, 300 Ω, HBM | ||
Output impedance | 50 Ω | ||
Cable length | 1.3 m | ||
Probe weight | 100 g | ||
Ambient operating temperature | 0 to +40 ºC | ||
Ambient non-operating temperature | –40 to +70 ºC | ||
Operating humidity | Up to 95 % RH @ +40 ºC, non-condensing | ||
Non-operating humidity | Up to 90 % RH @ +65 ºC, non-condensing | ||
Operating altitude | 4,600 m | ||
Non-operating altitude | 15,300 m | ||
EMC/EMI | Radiated Emission: CISPER 11 Group 1, Class A. ESD: IEC61000-4-2 4KV contact discharge, 8KV air discharge | ||
Standard accessories | 2x InfiniiMode solder-in tips 2x InfiniiMode socketed tip 2x Differential browser tip | ||
Others (included) | 1x calibration certificate 1x accessory configuration card | ||
Recommended Keysight oscilloscopes*** | InfiniiVision 3000 X-Series with software ver 2.2 or higher, 4000 X-Series with 3.01 or higher, 6000 X-Series with 6.0 or higher, Infiniium 9000 Series with 3.5 or higher, S-Series with 5.0 or higher | Infiniium 9000 and 90000A Series with software ver 3.5 or higher, S-Series with 5.0 or higher | Infiniium 9000 and 90000A Series with software ver 3.5 or higher, S-Series with 5.0 or higher |
*Denotes warranted electrical specifications at 2:1 attenuation mode after 20 minute warm-up, All others are typical.
** When calibrated on the oscilloscope, these characteristics are determined by the oscilloscope characteristics.
*** The N2750A Series differential probes can be used with the Infiniium 90000X/Q Series scope and the N5442A precision BNC adapter.
**** Assumes symmetric differential signals.
