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XDM系列电容台量万用表
我们被称为世界领先的中国制造商和供应商之一。欢迎购买著名品牌的OWON替补式数字万用表，USB万用表，WiFi万188足彩比分预测用表，无线万用表，WiFi Meter App，其价格便宜。我们可以选择许多库存的产品。立即与我们咨询报价。
4英寸LCD显示，更多的视觉检查数据，支持双显示。趋势和图表模式显示。
常问问题
How to know whether the oscilloscope is accurate?
当示波器捕获的波形占据显示区域的2个部门时，这已经足够了。他们认为没有必要将波形缩小到全屏尺寸。实际上是错误的。今天，我们将了解为什么我们需要将波形放在屏幕的全尺寸上。
2分区和全屏显示之间的差异是波形将“扩展”。这会导致垂直尺度值的变化，从而影响垂直测量的准确性。8位ADC和垂直测量之间的关系似乎很重要。
以标尺为例，如果您以1M标尺为1.6厘米的对象，则结果为2厘米。如果您使用10厘米的尺子，则将达到1.6厘米。这就是说，量度单元越小，它越准确。
那么，垂直量表价值的变化如何影响测量的准确性？
1.垂直分辨率的影响
市场中的正常数字示波器集成了8位ADC。每一个
waveforms are reunited by 256 units of “0” and “1”. We assume that 8 divisions
are the full scale at vertical side, and the quantification level at 256. While the
vertical scale is 500mV/div, the vertical precision will be (500mV x
8）/256 = 15.625mv。对于同一信号，当垂直刻度切换到
50mV/div, that is (50mV x 8)/256=1.5625mV. The vertical precision reaches
1.5625mV.
常问问题
示波器的流行功能
It has been around 70 years since Tektronix invented its first数字示波器，低端数字示波器的性能和功能越来越好。188金宝搏网站举报现在，随着中国示波器的市场，具有不到500MHz功能的示波器经历了不同的发展阶段：
1. Larger and More Professional Displays
Early digital oscilloscopes were generally equipped with a 4.5-inch or 5-inch LCD screens and display contents were limited. As early as 2009, OWON first launched a large 8-inch screen oscilloscope in itsSDS series of products。This allowed the waveform to display perfectly on the larger and clearer screen and it hit the requirements of engineers at the time.
2.高样本速率具有深刻的记忆力和高波形捕获率
在早期，500MHz以下的数字示波器的188金宝搏网站举报存储深度低，通常只有几个K样品。由于采样率和记录记录是矛盾的，当采样率很高时，波形存储容量就会降低。在2010年188足彩比分预测Owon SDS系列引入了10m样品存储器，该存储器提供1GS/s的样本率。通过使用嵌入式高性能CPU和RAM，通过使用高性能的大规模FPGA ASIC设计，在SDS系列中实现了这一点，该设计采用了快速的段存储技术。
3. Multi-function Oscilloscopes for Different Test Environments.
Mixed-signal oscilloscopes (MSO)were first introduced by Keysight over a decade ago and the idea was later carried forward by more and more oscilloscope vendors. These oscilloscopes are not only a time domain measurement instrument, but also have extended functions to enable multi-field measurement. By using high-performance microprocessors and ASIC’s, processing can be done on a number of nodes at the same time in the frequency domain, data domain and statistical domain for measurement and analysis. At present the functional classification of the oscilloscope has been very vague; many manufacturers have integrated a signal generator and other basic measurement modules into the oscilloscope system. TakeOWON’s XDS oscilloscopefor example, its functions include: an oscilloscope, arbitrary waveform signal generator, digital multimeter, data recorder and frequency meter. Module integration also improves the efficiency of data manipulation and analysis.。
4.更好的ADC和触摸屏技术
自从Lecroy在2013年推出了12位HBO系列示波器以来，许多工程师开始关注较高分辨率ADC提供的垂直精度。例如，12位示波器测量精度比正常的8位示波器高16倍，对于小电压信号测量和大型电压信号中小信号分量的分析，这可能是一个很大的优势。
Since the Apple began using a touch screens in their mobile devices, more and more electronic products began to integrate them. With continuous functional innovations of oscilloscopes, more and more manufacturers began to use a touch screens to replace some of the complex key operations.
从2016年开始，许多著名的国际示波器制造商开始促进高精度和触摸屏产品，包括Tektronix，RS，Keysight等。预计这些功能将成为未来示波器的标准配置。188足彩比分预测Owon早在2014年就开始在示波器上试用触摸屏技术，并于2015年正式发布了他们的XDS series示波器 - 第一个集成的硬件12位ADC和触摸功能示波器。这XDS 200M示波器launched in 2017 is equipped with a 14-bit ADC, leading measurement resolution to an even higher level..
除了这些受欢迎的功能外，XDS series oscilloscopeS仍然保持Owon的产品特性。188足彩比分预测可选的锂电池模块可确保现场测量和浮动测量的可能性。更重要的是，Owon还深深188足彩比分预测地关注教育，并基于XDS的WiFi模块建立了无线教育管理系统。通过WiFi连接，该系统可以实现“全部”实验项目教学功能，从而提高了班级效率。188足彩比分预测Owon继续进行创新以满足市场需求，始终旨在留在市场前面，确保我们为大量消费者带来越来越多的创新产品。
尖端：
当前探针测量示例和技巧
应用当前探针很广泛。基本原理是，流过电线的电流将在其周围产生磁场。这当前探针将磁场转换为相应的电压信号。通过与oscilloscope，观察相应的电流波形。广泛用于开关电源，电机驱动器，电子整流器，LED照明，新能量和其他田地。本文将描述常见探针的分类，原理和重要技术指标。通过示例，我们将了解探针之间的差异，以便每个人都可以对探针有基本的了解。
1.将电流探针分为AC电流探针和AC/DC电流探针。
当前探针oscilloscopes基本上分为两种类型：AC电流探针和AC/DC电流探针。交流电流探针通常是被动探针。它们的成本低，但无法处理直流组件。AC/DC电流探针通常是活跃的。探针分为低频探针和高频探针。低频探针的常见带宽低于几百kHz，高频探针的带宽通常超过几个MHz。
2. the important indicators of current probe
2.1准确性
Accuracy: Refers to the accuracy of current-to-voltage conversion. Taking the AC/DC current embedding as an example, the accuracy of the open-loop system is generally poor, with a typical value of about 3%. The accuracy of the closed-loop system is relatively high, and the typical value is about 1%. The accuracy of our high frequency current probe is 1%.
2.2 Bandwidth
带宽:所有探测器的带宽。的bandwidth of the probe is the frequency at which the probe response causes the output amplitude to drop to 70.7% (-3 DB), as shown in Figure 5. When selecting oscilloscopes and oscilloscope probes, be aware that bandwidth affects measurement accuracy in many ways. In amplitude measurements, the sine wave's amplitude becomes increasingly attenuated as the sine wave frequency approaches the bandwidth limit. At the bandwidth limit, the amplitude of the sine wave is measured as 70.7% of the actual amplitude. Therefore, to achieve maximum amplitude measurement accuracy, you must select an oscilloscope and probe with a bandwidth several times higher than the highest frequency waveform you plan to measure. The same applies to measuring the waveform rise time and fall time.
波形过渡边缘（例如脉冲和方波边缘）由高频组成。带宽极限会导致这些高频组件减弱，从而使显示器的切换比实际的转换速度慢。为了准确测量上升和下降时间，所使用的测量系统必须具有足够的带宽，以维持构成波形上升和下降时间的高频组件。在最常见的情况下，当使用测量系统的上升时间时，系统的上升时间通常应比要测量的上升时间快4-5倍。在开关电源领域，几十MHz的带宽通常就足够了。我们的高频电流探针的带宽为5 MHz至100 MHz。
Specification
| XDM | Measurement Range | Frequency Range | 准确性：1年±（读取范围的 +％的百分比） |
|---|---|---|---|
| 直流电压 | 600mV，6V，60V，600V，1000V | / | 0.02±0.01 |
| 真正的RMS交流电压 | 600mV, 6V, 60V, 600V, 750V | 20 Hz - 50 Hz | 2 + 0.10 |
| 50 Hz -20 kHz | 0.2 + 0.06 | ||
| 20 kHz - 50 kHz | 1.0 + 0.05 | ||
| 50 kHz -100 kHz | 3.0 + 0.08 | ||
| DC Current | 600.00 μA | / | 0.06 + 0.02 |
| 6.0000 mA | 0.06 + 0.02 | ||
| 60.000 mA | 0.1 + 0.05 | ||
| 600.00 mA | 0.2 + 0.02 | ||
| 6.000 A | 0.2 + 0.05 | ||
| 10.0000 A | 0.250 + 0.05 | ||
| 真正的RMS交流电流 | 60.000 mA, 600.00 mA, 6.0000 A，10.000 A |
20 Hz - 45 Hz | 2 + 0.10 |
| 45 Hz -2 kHz | 0.50 + 0.10 | ||
| 2 kHz -10 kHz | 2.50 + 0.20 | ||
| Resistance | 600.00Ω | / | 0.040 + 0.01 |
| 6.0000 kΩ | 0.030 + 0.01 | ||
| 60.000kΩ | 0.030 + 0.01 | ||
| 600.00kΩ | 0.040 + 0.01 | ||
| 6.0000 MΩ | 0.120 + 0.03 | ||
| 60.000mΩ | 0.90 + 0.03 | ||
| 100.00 MΩ | 1.75 + 0.03 | ||
| 二极管测试 | 3.0000 V | / | 0.5 + 0.01 |
| Continuity | 1000Ω | / | 0.5 + 0.01 |
| Frequency Period | 200 mV -750 V | 20 Hz -2 KHz | 0.01 + 0.003 |
| 2 kHz -20 kHz | 0.01 + 0.003 | ||
| 20 kHz -200 kHz | 0.01 + 0.003 | ||
| 200 kHz -1 MHz | 0.01 + 0.006 | ||
| 20 MA -10 A | 20 Hz -2 KHz | 0.01 + 0.003 | |
| 2 kHz -10 kHz | 0.01 + 0.003 | ||
| 测试电流 | |||
| Capacitance | 2.000 nf | 200 NA | 3 + 1.0 |
| 20.00 nf | 200 NA | 1 + 0.5 | |
| 200.0 nF | 2μA | 1 + 0.5 | |
| 2.000μf | 10 μA | 1 + 0.5 | |
| 200μf | 100μA | 1 + 0.5 | |
| 10000μf | 1 mA | 2 + 0.5 | |
| Temperature | 支持2类别的温度传感器 - 热电偶（B / E / J / K / N / R / S / T类型之间的90转换）和热电阻（PT100和PT385类型之间的RTD传感器转换） |
||
| 数据遗传函数 | |||
| 记录持续时间 | 5ms | ||
| Logging Length | 1M点 | ||
