数字信号示波器 DLM2000 MSO系列

DLM2000是台式数字信号示波器,可用于设计和调试电子器件。它采用人体工程学设计,使用方便,并且包含了很多功能。其带宽为200至500MHz,存储器为12.5到125MP,确保总有一款DLM2000能满足您的应用和预算。使用DLM2000行业领先的DLMmicrositeimagewebspace“灵活MSO输入”,您可以选择通道4作为模拟输入,或用它采集8位逻辑信号。现代电子器件包含模拟和数字电路,而使用DLM2000灵活的MSO输入,您可对两者进行测量,包括混合信号触发以及并行或串行总线的解码。

灵活的输入和性能

操作简便&易于观测

操作简便。直立式机身加上大屏幕使得查看显示非常方便。

我们提供大尺寸的LCD屏幕(8.4英吋)让您拥有更好的视野。还有直立式机身设计节省了桌面或工作台的空间。它是一款设计紧凑、操作简便、易于观测的“个人示波器”。
 

DLM2000特点17DLM2000特点2 3

4个或更多通道上的信号观测...

灵活的MSO输入

捕捉模拟和逻辑混合信号 DLM2000图1

4个通道远远不能满足数字控制电路的测试需求。DLM2000系列将通道4的模拟输入转换为8位逻辑输入,因此可用作3个模拟输入通道加8位逻辑输入信号的MSO(混合信号示波器)。

3通道模拟+8位逻辑

 

 

通过使用逻辑通道最多可测量11个通道信号

使用逻辑输入,最多可同时观测11个通道信号,包含3个模拟通道加上8位逻辑信号。使用逻辑输入不仅能够观测数据和控制信号,或用作触发源,还可以用于分析I2C和SPI串行总线。


 

DLM2000图9 使用ScopeCORE的快速数据处理

使用我们享有专利的ScopeCORE快速数据处理IC,即使有11个输入信号也可实现实时显示。

DLM2000图3
 

DLM2000系列产品线

项目 型号 DLM2022

710105
DLM2032

710115
DLM2052

710125
DLM2024

710110
DLM2034

710120
DLM2054

710130
模拟输入通道 2 4*
逻辑输入
 
-
 
8位
 
最高采样速率
 
2.5GS/s (交错模式开启)
 
频率特性
 
200MHz
 
350MHz
 
500MHz
 
200MHz
 
350MHz
 
500MHz
 
最大记录长度
 
62.5M点(单个测量,存储长度:/M1S,交错模式开启)
 
125M点(单个测量,存储长度:/M2,交错模式开启)
 
*或者当使用逻辑输入时,为3个通道

先进的波形记录仪采集引擎

具有大容量内存和历史记录功能,不会错过一个历史波形。多种触发功能,能可靠地捕捉需要的波形。

大容量(125M点)内存支持长时间测量

对于单次触发模式中的2通道测量,可以添加/M2内存扩展选项,为您最多提供125M点的大容量内存。10,000Hz的信号频率可保存5,000秒。即使是1.25GS/s的采样速率,也可捕捉到0.1秒的波形。

   连续测量
 
 单次测量
 2通道、4通道相同  使用4通道(对于DLM20x2,使用2通道)  使用2通道(对于DLM20x2,使用1通道)
标准
 
1.25M点 6.25M点
 
12.5M点
 
/M1、/M1S内存选件                        
 
6.25M点
 
25M点
 
62.5M点
 
/M2内存选件
 
12.5M点
 
62.5M点
 
125M点
 

提示:/M1、/M2内存扩展选件只适用于4通道机型。/M1S选件只适用于2通道机型。
 

历史存储功能 - 通过波形回放功能,不会丢失异常波形。

使用DLM2000系列,在采集存储器中最多可保存20,000屏之前捕捉的波形。使用DLM2000历史1历史存储功能,可以在屏幕上显示单屏或全部历史波形数据。可对历史波形执行光标测量、计算和其它操作。使用历史功能,可分析很少出现的异常信号。

DLM2000图4
 

历史搜索功能
 
可在20,000屏历史波形中搜索满足某种条件的波形。可对找到的波形执行光标测量和其它分析。
重放功能
 
使用旋钮可按顺序显示波形,每次一个波形。使用重放功能,可自动回放、暂停、快进和倒放历史波形。
 

捕捉模拟/数字组合波形的触发功能

DLM2000系列提供多种方便配置的、结合模拟和逻辑输入的触发功能,比如边沿触发、增强触发和B触发功能。

DLM2000触发功能7 1


 


DLM2000触发功能8 1






























 

触发功能示例

A-B(n)触发:

在信号B的第7个边沿触发。该触发功能被广泛应用于事件偏移测试,比如非标准图像信号的垂直/水平周期或电机参考位置脉冲和驱动脉冲。
DLM2000触发功能2
串行码型触发(用户定义):

在任意设置码型上触发,最多128位。对于检测ID/数据和专用通信格式的其它部分信息,非常有效。
 
 DLM2000触发功能3
双总线触发:

CAN和LIN总线组合触发。I2C+SPI总线触发,还可用其它组合触发。

LIN或CAN总线信号满足触发条件是发生。
 
DLM2000触发功能4

捕捉&显示、缩放以及搜索功能

具有最佳降噪功能的实时滤波器支持很广的频率范围(从8kHz到200MHz)

DLM2000系列有两种滤波器类型,输入端滤波和运算滤波。使用这些滤波器,可以过滤无用的信号,只观测需要的带宽信号。

实时滤波器 

每个通道有14个低通滤波器,频率范围为8kHz至200MHz。在限定带宽内的波形存储在内存中。 

DLM2000实时滤波器1 3

截止频率:  

200MHz、100MHz、20MHz、10MHz、5MHz、

2MHz、1MHz、500kHz、250kHz、125kHz、

62.5kHz、32kHz、16kHz和8kHz


 


使用内置滤波器处理
 



 

数字运算滤波器

输入波形可以通过运算功能中的IIR滤波器进行滤波。滤波后的波形可与输入波形一起显示,以便进行对比。可选择低通或高通滤波器。DLM2000数字滤波器1 2

截止频率设置范围: 0.01Hz~500MHz


 
使用运算功能的PWM波形滤波效果
 

对两个不同的位置同时进行缩放 - 波形缩放和搜索功能

同时缩放两个位置

因为DLM2000系列允许单独设置缩放因数,所以同一时间可以使用不同时间轴显示两个缩放的波形。此外,使用自动滚动功能,可以自动滚动长内存中捕捉到的波形,并更改缩放位置。使用自动滚动功能,可以选择前进、后退、快进、滚动速度以及其它控制选项。
 BU DLM2000 3

大容量内存为您提供多种波形搜索功能

两种波形搜索类型:

通常,搜索数据既耗时也花费成本,而大容量内存如果没有数据搜索的功能就是无用的。这就是为何DLM2000不仅提供大容量内存,而且还提供强大波形搜索功能的原因。

在单个屏幕上搜索数据:缩放搜索功能

此功能可在长内存中搜索捕获的波形,然后在缩放区域显示符合搜索条件的波形。缩放位置会在屏幕中标记出来。

(显示当前位置)。

DLM2000缩放搜索1波形搜索条件

边沿、边沿(条件)、状态码型、脉冲宽度、状态宽度、串行总线(限具有串行总线

分析选件的型号)
搜索 历史波形:历史搜索功能

可从最多20,000屏已捕获波形中提取满足指定条件的波形。
 
DLM2000历史搜索2
DLM2000历史搜索3

在通过上/下/左/右移动被测波形而创建的区域内搜索波形。
 
历史搜索功能4

搜索穿过/不穿过屏幕上矩形区域的波形。
 

有用的功能 - 快速强大的分析功能

显示各周期峰-峰值或脉冲宽度等参数的趋势

测量功能和统计

可测28个波形参数,比如:最大值、最小值、峰-峰值、脉冲宽度、周期、频率、上升/下降时间以及占空比。可显示其中20个波形参数执行自动测量。此外,还可以重复测量波形参数,并显示统计值(平均值、最大值、最小值和标准偏差等)。


 
DLM2000功能1
趋势和直方图显示

可重复测量周期、脉冲宽度和波幅等波形参数,并在图表中显示。在同一个屏幕中,可观测多个周期的波动,计算每个画面不同波形的幅度,显示波幅的趋势。也可以电压轴或时间轴为基准,显示波形参数自动测量值的直方图。
 
DLM2000功能2

波形参数的趋势显示

使用时间轴的直方图显示
 

 

自动读取电压/时间差

- 光标测量 -

光标放在显示的信号波形上,并显示光标和波形的交叉点处的多个测量值。有5种光标类型:ΔT、ΔV、ΔT&ΔV、标记、角度光标。


 
DLM2000功能3

同步电平,使用ΔT&ΔV光标
 
频谱分析功能

- FFT分析 -


可最多执行两个FFT分析。除了CH1到CH4的实际波形外,还可对运算波形进行FFT分析。可以方便地分析波形滤波前后的频率成分,以及旋转体移动的周期、频率变化等。
 

 

DLM2000功能4

 

一键保存波形

通过按下屏幕右下角的快照键,即可为当前屏幕显示波形保留一条白色迹线。可方便地重复按下此键,保留多条波形迹线以便比较。此外,屏幕上的快照数据可以文件形式保存或加载,当进行波形比较时,当作参考波形。
 
 DLM2000功能5
 
以缩略图方式显示保存的文件

可以显示波形数据文件、波形图像数据文件以及波区文件的缩略图。会显示图像和文件名称,以便在复制或删除文件时可以查看屏幕图像内容。可以放大文件以确认数据。
 
 DLM2000功能6 1

已保存文件的缩略图      可按实际大小查看缩略图
 

 

拥有触发GO/NO-GO功能

使用触发条件、区域波形、测量参数和其它标准设定GO/NO-GO。对于NO-GO,可以设定动作,比如发出蜂鸣声、保存当前波形或向指定电子邮件地址发送通知。可以将出现异常的波形保存起来,以便日后对此现象进行确认和分析。












 
 DLM2000功能7
使用图形在线帮助来检查功能

通过按下屏幕左下角的“?”键,可以查看录波计仪器功能的详细图形化说明。这样,您就可以在屏幕上获取与功能和操作相关的帮助,而不用查看操作手册。






 
 DLM2000功能8

串行总线分析功能选件(/F1、/F2、/F3、/F4、/F5、/F6)
   - FlexRay/UART/CAN/LIN/I²C/SPI -

支持用于FlexRay、UART、CAN、LIN、I²C和SPI总线信号的触发,并提供解码显示分析(串行总线分析选件只在4通道型号上适用)。逻辑输入也可以用于串行总线分析(不包括FlexRay、CAN和LIN)。



多种总线同时分析:可同时分析两种总线。不同速度的总线波形和功率分析结果可按不同比例显示在单独的缩放屏幕中。

丰富的触发功能: 可设置很多种触发条件,比如ID/data组合触发、串行总线触发与普通边沿触发的组合触发。

支持串行总线分析的输入

 

 I2

 SPI 

UART

 LIN 

 CAN 

FlexRay

模拟输入

Yes

Yes

Yes

Yes

Yes

Yes

逻辑输入

Yes

Yes

Yes

NA

NA

NA

 

DLM2000选件1
 
同时分析I2C和SPI
 
DLM2000选件2 1
 
同时分析FlexRay和CAN
 

电源分析选件(/G4)

专用电源分析选件(限4通道型号适用),可用于开关损耗、焦耳积分(I2t)、SOA(安全工作区)和基于EN61000-3-2的电源电流谐波分析等应用。

开关损耗分析

电压电流波形可以输入到62.5MW (最大)的长内存(/M2型号),以便进行开关损耗计算(V(t) xI(t))。支持多种开关损耗分析,包括开/关损耗计算,连续损耗以及长周期损耗(50Hz/60Hz)。
DLM2000选件3






 

 

基于EN61000-3-2的电源电流谐波分析

根据IEC标准可以将目标设备产生的谐波归入适当的级别(A-D级)。柱状图和列表用于显示谐波分析电流限值与实际测量计算值的比较结果。
 DLM2000选件4

谐波电流图形显示
 

DLM2000接口2

  1. 以太网(选件)
  2. 支持1000BASE-T、100BASE-TX、10BASE-T
  3. GO/NO-GO I/O端子
  4. 使用GO/NO-GO功能,您可以输入一个判断波形的定时信号,并输出一个TTL电平信号方式输出。
  5. RGB视频信号输出端子
  6. 可以在外部监视器上输出图像信号查看波形。
  7. USB-PC连接端子
  8. 支持从PC端进行控制。
  9. USB外设连接端子
  10. 支持USB存储器、USB键盘和USB打印机。
  11. 探头供电端子(选件)
  12. 可为电流探头(701930和701931)以及差分探头(701920、701921、701922、700924、700925和701926)供电。
  13. GP-IB连接端子(选件)
  14. 支持从PC端进行控制。
  15. 外部触发输入
  16. 可与输入信号分开,单独输入触发信号。
  17. 触发输出
  18. 输出CMOS 3.3V电平触发信号。







  19.  
  20.  
  21.  
  22.  

DLM2000接口2 1

 

CN Product DLM2000 Selection Guide

2016年11月7日

  • 发布了新的固件版本4.73。
  • 修正了开机时序中有关探头自动识别的一个罕见问题。
  • 改善了在XWirepuller中使用动作触发时的打印功能。
  • 修正了使用LIN分析/查找时在特定条件下出现的错误检测和显示。(/F4、/F6、/F7、/F8)
  • 将SENT分析功能中的最大趋势显示数量从1提高到4。(/F9、/F10)
  • 支持PSI5分析功能。(/F10、/F11)

 

2016年10月13日

  • 增加新功能:
    1. /F10,/F11 (PSI5 分析选件)

 

2016年2月17日

  • 新固件版本4.43发布
  • /F7, /F8 CAN FD 分析选件符合ISO标准
型号 描述
710105 数字示波器DLM2022:2ch,200MHz
710110*1 混合示波器DLM2024 4ch,200MHz
710115 数字示波器DLM2032 2ch,350MHz
710120*1 混合示波器DLM2034 4ch,350MHz
710125 数字示波器DLM2052 2ch,500MHz
710130*1 混合示波器DLM2054 4ch,500MHz

International Rectifier Aerospace, Michael Wright

Main contenders at 9999$ price point: Yokogawa DLM2054 (base DLM under 5K$ 2010 ) v. Tek DPO3054. HP5000/6000 and LeCroy were early round knock-outs. 
Result: DLM2054 far better than DPO3054. After using DLM, DPO3054 seems a toy. DLM2000 series wins by a wide margin

Yokogawa DLM2054 & Tek DPO3054 used side-by-side in daily use for 2 years. We were a Tek+HP shop, then a LeCroy deep memory shop, then Tek shop, now Yokogawa shop.

DLM has far better screen resolution, far better DPO accumulate, many more features. After using the DLM real time user-setable bandwidth features, and the infinite impulse response low pass, band pass, and high pass math channel features, we can not consider going back to any 'scope without. With the wide range of filter bandwidths on DLM, we can filter out the noise and see the hidden signal. With the DLM, we can show our customers the clean beautiful excellent step response while filtering out the switching transients. No way to make such plot with the DPO3054, with its single 20MHz low pass. Tek does not offer similar filtering on even their highest-end 'scopes as far as the Tek sales person and Tek FAE could demonstrate, Tek "FilterVu" was only on the lower-end Tek, was it the 2000 series, and it seemed so Mickey MouseTM and nearly useless in comparison, so many limitations. The DPO feature on DLM seems full featured, whereas DPO on DPO3054 seems so very limited. In these and other senses, Yokogawa's lowest-price-point offering offers features that no other 'scope supplier offers at any price. And the DLM re-trigger rate, frame rate, is far higher than DPO3054, so it captures far more data far faster to use in the DPO display. I have also used the higher price point DL9000 series, and was very pleased to find that Yokogawa left most of the features in the DLM2000 series. The form factor small footprint is superior (use rubber, not plastic, feet, DLM so light it slides).

We commend Yokogawa on the jewel-like quality and keeping much of their feature set across their entire line-up.

We highly recommend the Yokogawa DLM2000 'scopes and all Yokogawa 'scopes.

Observations: 
1. Our 3 Tek DPO3054s have failed and had to be sent back for repair 3 times, 2 went black suddenly, one USB burn out. No problems with 5 DLMs.
2. Our Tek DPO3054 knobs have gotten noisy to the point of making the DPO3054 nearly useless. Where is the longevity?
3. DLM has web server remote control, DPO3054 does not. Ditto for so many other features.
4. DLM3054 is super with PC mouse, keyboard, but no USB hub has ever worked, can have only 2 of the 3 wants simultaneously: USB drive, mouse, and keyboard.
5. TEK DPO3054 input attenuators have 400% wider dynamic range than DLM: 300 v. 150 Vrms & 1 v. 2 mV/div, 2x at either end.
6. Use a cable from back panel trigger input to alligator clip to calibrator signal to emulate the DPO3054 much missed force trigger button.
7. DLM can pack far more Measure results on screen than DPO3054, DPO3054 measure results go over, and block, the signal, DLM does not, terrific display!.
8. The history features are terrific. I use the screen snap shot constantly to quickly compare waveforms. Tek saves 2 waveforms easily, some here prefer the Tek way.
9. Strange but true, Tek will not display a single waveform in auto or norm trigger, always 2 or more. Only way to do it seems to be single trigger mode. Bad TEK.
10. Tek users can easily make the user interface switch. I liked the Yokogawa user interface, both DL & DLM, from the first minute. I like Tek's interface also.
11. Even 10 year old Epson printers work, only the latest HP OfficeJet 6000 (2010) or later HP printers worked with the firmware that the DLMs shipped with.


Jerry Catherine - EYE Lighting International of North America, Inc.

Great Scope! I like the operation and sampling. This is something I'll be looking at for scope options for our lab.

差分探头 100MHz 700924

可用于宽频带、高电压浮动测量的差分探头

电流探头 50 MHz/5 ARMS 701917

频率带宽: DC ~ 50 MHz

最大持续输入范围: 5 Arms

适用于数字示波器,示波记录仪和其他波形测量仪器。

电流探头 120 MHz/5 ARMS 701918

频率带宽: DC 至 120 MHz

最大持续输入范围: 5 Arms

适用于数字示波器,示波记录仪及其他波形测量仪器。

差分探头 500MHz 701920

精确观测高速差分信号

差分探头 100MHz 701921

带宽:DC可达100MHz (-3dB)

差分探头 200MHz 701922

带宽:DC~200MHz (-3dB)

高电压差分探头 701926

用于DL系列的701926高电压差分探头

电流探头 100MHz 701928

此探头不需要额外的电源连接(LEMO接口),可被自动识别,通过DLM2000、DL6000/DLM6000、DL9000、SB5000系列的操作调整零位。

电流探头 50MHz 701929

此探头不需要额外的电源连接(LEMO接口),可被自动识别,通过DLM2000、DL6000/DLM6000、DL9000、SB5000系列的操作调整零位。

电流探头 10MHz 701930

带宽:DC到10MHz (-3dB)

电流探头 2MHz 701931

带宽:DC到2 MHz (-3dB)

去延迟校正信号源 701936

701936去延迟校正信号源
通过消除延迟来改善开关损耗测量误差。701936去延迟校正信号源可使用钳式电流探头和穿孔型‘CT’电流传感器。

微型无源探头 701942

适用于DL1600、DL1700E和DL7400系列

高电压探头 100:1 701944

用于DL/DLM系列

高电压探头 100:1 701945

用于DL/DLM系列

逻辑探头(PBL100) 701988

701988 (PBL100)逻辑探头

逻辑探头(PBL250) 701989

逻辑探头(PBL250)

无源探头(非独立BNC宽工作温度范围) 10:1 702906

无源探头,1000V(DC+ACpeak) CAT II, 200MHz, 10:1, 10MΩ, 2.5m
宽工作温度范围(-40 to 85°C)
适用于DLM2000 和 DLM4000 系列

用于非绝缘BNC

用于DL750的打印纸 B9988AE

用于DLM2000/DLM4000/DL850/DL6000/DL750的优质纸张

探头架 701919

使用带有灵活臂和重底座来固定和稳定探头的探头架可以简化电路板测试。

Overview:

客户是做空调变频器中IGBT研发的部门,需要测试半个电源周期(50Hz市电)内的开关管损耗值,推荐使用横河的带G3或者G4选件的DLM2000混合信号示波器进行测试。

Overview:

测量精确的上升时间已经变得越来越简单,然而,不仅示波器贡献的误差很容易被忽略,探头也是如此。而且,虽然示波器的有限阶跃响应(上升时间)产生的误差通常计算在内,探头产生的误差也经常被忽略。

Overview:

客户是某企业做高压变频器研究的,在高压变频器中有一个采用SPI总线协议的编码器信号,在试验过程中发现编码器输出有时候会出错,现在要验证编码器的输出波形是否真的出错还是变频器的软件导致出错,向客户推荐使用横河混合信号示波器DLM2000进行测试。

行业应用:
Overview:

客户需要用示波器测试化油器瞬间电压峰值,来验证是否符合理论元器件耐受值。向客户推荐横河的混合信号示波器DLM2000进行测试。

应用案例
1.8 MB
Overview:

混合信号示波器DLM2000系列
串行总线分析应用说明

Overview:

HDMI(高清晰多媒体接口)标准是从DVI(数字视频接口)标准发展而来的。HDMI标准解决了下一代视频通信接口的要求,被DVD播放器或STB等非PC应用所采用。

Overview:

客户需要进行中央空调控制器IPM测试,推荐客户使用横河的混合信号示波器DLM2000进行测试。

Overview:

某城市地铁引进某厂商的信号控制系统,其信号回路FTG-S检测维护是日常工作中最重要的一项。

应用案例
Overview:

复印机工作过程分为:待机-电晕-扫描-定影-加热-冷却-待机-休眠

应用案例
Overview:

客户主营电子产品的技术开发、技术转让、技术服务及技术咨询;电源、充电器、电池保护板、控制器、电池包的研发、制造及销售。

Overview:

空调控制器工作时启动特性非常重要,启动电压及启动压是否合理,直接关系到压缩机的工作状态。

Overview:

客户生产和研发军标制冷机控制器,是一个DC-AC的控制器,其中的控制部分是由PWM波来实现的,客户需要测试PWM波是否按照设计要求来工作。

Overview:

测试内容:客户是电动工具制造商需要在电锤工作状态中,实时测试其应变,将应变信号输入处理软件,算出最大累积应力。

Overview:

某汽车电子做雨刷电机堵转实验,需要记录堵转电流变化的全过程。

Overview:

测试对象:客户是某汽车集团研究总院整车控制部门。

Overview:

客户生产和研发军标制冷机控制器

Overview:

压缩机启动特性是否正常,关系到压缩机及空调系统的安全。

Overview:

测试对象:压缩机动态特性测试

Overview:

DLM2000 Firmware 2.37分析功能增加了功率分析功能。

Overview:

客户:某汽车公司技术中心新能源汽车研究所

Overview:

测试要求:某电子企业R&D部门使用示波器的脉冲计数功能时,信号波形有干扰,且干扰小于实际的脉冲波形幅值,要求干扰信号不计入脉冲计数中。

应用案例
Overview:

测试对象:天线内部采用SPI总线进行通信,与通用家电以及数码产品相比,天线在与卫星通信时,需要事先搜索并定位卫星,该过程需要数十秒或几分钟。

Overview:

目标客户:地铁车辆研发、制造厂商

Overview:

目标客户:太阳能企业、大学光伏中心、电子企业。

Overview:

目标客户:电梯检测中心、电梯研发生产企业。

应用案例
Overview:

测试对象:客户引进新机种,产线上之前使用TDS5000手动测试的时序项目,现在需要通过程序控制实现自动测试。

行业应用:
应用案例
Overview:

测试内容一:在激光测距领域,会有点空比极低的窄脉冲信号发出,需要测量到具体的脉冲和脉冲之间的时间间隔。

行业应用:
Overview:

测试对象:地铁整车通讯系统中的MVB

Overview:

DL850E、DLM2000可检测汽车安全气囊内置加速度传感器的信号,确定输入时机和引爆时机,防止气囊错误动作。

Overview:

测试内容:测试开关电源整个启动停止的过程,并详细分析每个开关动作的细节。

Overview:

测试项目:在小家电行业,经常会使用示波器进行总线测试。在一个控制模块区域中,往往会同时使用I2C和SPI两种总线。

Overview:

客户为某电器马达工厂,主要生产洗衣机用马达。

Overview:

某电器制造商,主要生产蒸汽洗涤烘干一体机、空气洗斜式滚筒洗衣机、宽变频卧式滚筒洗衣机、变频波轮洗衣机等生活电器产品。

Overview:

通过变频器输出的波形可以看到,其信号中含有谐波成分。DLM2000能够轻松分离出基波,为客户控制提供很好的参考。

Overview:

某制冷研究院专业研发直流变频空调。

Overview:

如何进一步提高电源产品的性能,同时降低自身的能耗成为电源研发与生产企业面临的巨大挑战。示波器作为电源测试中的重要工具,在电源的研发与生产过程中发挥了非常重要的作用,本案例将以横河DLM2000混合示波器为例,阐述电源测试中常见问题的解决方案。

Overview:

空调IPM控制模块和压缩机良好的配合,才不会发生启动故障。而在研发过程中,简单的测试结果波形显示及参数,已经无法满足客户对示波器的要求,客户需要对整个启动过程详细把握,YOKOGAWA DLM2000就具备了客户的所有需求。

Overview:
SNTP (SNTP)The DLM2000 clock can be set using Simple Network Time Protocol (SNTP). The DLM2000 can be configured to automatically adjust its clock when it is turned on. SNTP Server (SNTP Server)Specify the IP address of ...
Overview:
The AC Power Input in all Yokogawa instruments is designed as a 3-pin connection (one of which is a GND pin). In some parts of the world, PCs are sold with AC power cables that are 2-pin. Often times this means the ...
Overview:
You can disable the soft menu from saving to a screenshot by setting the Mode to Normal through the Utility menu.
Overview:
The rated specification for channel to channel skew on the DLM2000 is 1 ns or less, where 1 ns typically denotes the worst case scenario. To measure channel to channel skew on the DLM2000 series oscilloscope, you will ...
Overview:
The lowest possible device setting for sample rate on the DL850 is 5 Sa/sec. There are however, different methods that will allow you to achieve much lower sample rates which includes the use of an external clock, ...
Overview:
The DL series instruments are capable of measuring the delay between traces or the delay between channels. The measured output value can be displayed in either time or degree. To setup the DL850 to measure delay, follow ...
Overview:
The DLM2000 Series Oscilloscope is capable of performing enhanced parameter measurements and calculations. This feature allows you to perform automated measurements of waveform parameters of two different areas. It ...
Overview:
For the DLM2000 with user-defined math (G2 Option), you can calculate the ratio of two voltages in decibels. The formula for calculating the ratio of two voltages in dB is:                   dB = ...
Overview:
Decimation is a technique used to reduce the total number of samples. You can use Xviewer to perform decimation on your waveform data files that have the WDF/WVF/ASCII CSV extension format. Decimation reduces the ...
Overview:
With the DLM2000 series mixed signal oscilloscope, up to 20,000 previously captured waveforms can be saved into the acquisition memory. You can use the HISTORY function to search, display and save just one or all of ...
Overview:
There are two methods to programmatically determine if the calculations for waveform parameters is completed on the DL series oscilloscopes. Send the :MEAS:WAIT? command. This will ensure that no other commands are ...
Overview:
Unfortunately, we do not have an instruction manual describing the*.WDF file format structure like we did for the *.WVF files. However, we do provide a list of support options which will contain more details ...
Overview:
If your DL series oscilloscope is not measuring rise or fall time, it may be because you are attempting to measure asymmetric waveforms. It is not possible to perform automatic rise or fall time measurements on DL ...
Overview:
High Resolution mode can be used to remove high frequency noise and increase vertical resolution. It achieves this by increasing the number of effective bits per data to 12-bits through digital and bandwidth filters.
Overview:
Unbalanced, non-isolated inputs are single-ended amplifiers. These inputs are suitable for measurements where common mode voltages are extremely small or zero and measurements are referenced to GND.   Unbalanced, ...
Overview:
The timestamp on the DLM2000 corresponds to the end of waveform acquisition and is the time of the very last acquisition. Likewise, the timestamp in history corresponds to the last waveform acquisition.Please ...
Overview:
The DLM2000 has a unique feature that will allow you to save the timestamps in the History List. Please verify or update the firmware version on your DLM2000 to version 1.81 or later. There are two different save ...
Overview:
Even though the display record length is shorter than the specified record length, measurement is made over the full record length. There is no function that allows you to move the display position to view the other ...
Overview:
The Time Axis Accuracy is the accuracy of the A/D clock. It is not possible to directly measure the A/D clock and the A/D clock is not output from the DL850/SL1400. To verify the accuracy of the A/D clock, you will ...
Overview:
Please verify the following items: USB does not exceed 16 GB Latest firmware is installed on DLM2000 USB Format is FAT32 USB works properly on PC Test USB on another USB port If the problem persists, please ...
Overview:
Yes, the DLM2000 can decode and analyze J1939.
Overview:
Question:If the DL9000 is in normal trigger mode and no waveform acquisitions have been made i.e. the scope has not triggered, a query to the instrument using the :Waveform:Record or :History:Record? Minimum it returns ...
Overview:
Can we upgrade the DLM2000 memory to /M2?   No – DLM2000 Memory is factory only (must be ordered at time of new purchase); there is not a mod available for this type of upgrade.
Overview:
Frequency to Voltage Conversion   Problem: A transducer produces a sine-wave output dependant on the voltage-input; here is how to decode that output with a scope or a ScopeCorder.  For 3kV input, the transducer ...
Overview:
The DL850 can be installed with one of the following language options:JapaneseEnglishChineseKoreanGermanFrenchItalianSpanishRussianFor the English (-HE) model, the menu and message language can be changed in the UTLITY ...
Overview:
In the menu of GO/NO-GO determination, there is no menu option for setting the for measuring range.The measuring range can be set in the Area1 sub-menu of the Automated Waveform Measurement Parameter menu..
Overview:
The DLM2000 can save multiple waveform history data to 1 file when the file type is set to Binary format. However, when the file save type is set to ASCII, only the displayed waveform data can be saved regardless ...
Overview:
When using voltage probes, please set the channel probe mode using the command :CHANnel:PROBe 10.00 or 0.01. When using  current probe, please set the channel probe mode using the command :CHANnel:PROBe C10 or ...
Overview:
The free software DL-GATE can be used for the following products only:DL1700E seriesDL7400 series (firmware version after 1.32)DL1600 series (firmware version after 1.13)DL750 series (firmware version after ...
Overview:
The  DLM2000 has a Serial Bus Analysis option from /F1 to /F4.  This includes the CAN, LIN, UART, I2C, and SPI protocols. However, there is one more User-Defined Serial Bus Analysis, which is not an add-on ...
Overview:
​How to use SNTP on DL850 The sequence below is very important for SNTP to work properly.1. Set DATE/TIME and GMT Time Difference to your location FIRST. EDT is -4 hours, EDT is -5 hours - as examples. 2. Set a SNTP ...
Overview:
The DLM2000 will prohibit any attempts to save a waveform in CSV format if the file is larger than 1.25 Mpts. There are two methods to work around this issue: Compress the data using the Data Compression feature on the ...
Overview:
The symbol editor for the DL9000/SB5000/DLM2000 instruments has two operating modes: CAN and LOGIC.  The CAN bus symbol definition allows symbolic decode for CAN bus packets. The logic symbol display, on the other ...
Overview:
The sanitation procedure for various Yokogawa oscilloscopes have been documented below. Please download the document or pdf that refers to your Yokogawa oscilloscope.
Overview:
The Yokogawa .SNP file is a proprietary Yokogawa file format for saving waveform snapshots. This file has no relation to the Microsoft Snapshot Viewer program. The .SNP file can only be viewed on the oscilloscope.
常见问题
Overview:
Yes, the HDMI pinout carries the I2C on pins 15 and 16 of the HDMI connector cable. The HDCP (content protecting encryption keys) signal is carried on pins 15 and 16.
Overview:
To use wireless mouses or keyboards on a device, a driver needs to be installed. Yokogawa instruments will not let you install drivers on the device, therefore it is not possible to connect a wireless mouse or ...
Overview:
Please see the attached document for complete instructions on how to get connected to the DLM2000 using Xviewer
Overview:
Please download the attached document for detailed instructions on how to work around the DLM2000 ASCII record length limit Error Code 545
Overview:
Please download the attached article. This article discusses the three types of display interpolation found in the Yokogawa DL9000 and SB5000 digital oscilloscopes. It is also applicable to other Yokogawa oscilloscopes.
Overview:
Yes, VXI-11 is required and needs to be enabled for the DLM2000 to connect properly to Xviewer when using an ethernet connection. If the VXI-11 option is unchecked, a connection failed message will appear.   Related ...
Overview:
Currently, the SB5000 and DLM2000 series oscilloscopes provide the CAN Bus symbolic decode analysis function. Once the zooming magnitude is enlarged, the indication appears automatically. The DL9000 does not provide CAN ...
Overview:
Yes, please see attached documents for details.
Overview:
Yes, the NAK CAN Bus Trigger is supported on the DLM2000 and DL9000.  DL9000: Refer to the IM 701310-51E (page 3-13)DLM2000: Refer to the IM 710105-02E (page 2-16) 
Overview:
The DLM2000 base model with standard storage memory capacity is 100MB. With the /C8 Option, the internal storage memory capacity is 1.8GB.
Overview:
Although the DLM2000/DL9000 does not have a BoxAvg acquisition mode, there is an alternative method for achieving the same effect. The combination of Hi-Res mode and a low pass bandwidth filter will work in the same ...
Overview:
The actual input limit for the DLM2000 is 212V (DC+ACpeak) for not only a 0.01 or 0.001 Hz AC signal but also a DC signal. The reason why 150 Vrms is indicated on the DLM2000 specification sheet is that the safety ...
Overview:
There are three kinds of standards for which a differential probe is necessary:  FlexRay CAN UART (Some but not all UART)  It is not necessary to use a differential probe for the LIN, I2C and SPI standards.
Overview:
In the oscilloscope's QIS (Quality Inspection Standards), the "beat method" can be used to inspect and verify the time base accuracy. The "beat method" utilizes the aliasing effect to create a "beat waveform." The "beat ...
Overview:
If your DLM2000 has firmware version 1.245 or later, then you can use a USB flash drive to upgrade the firmware of your unit.   Note:DLM2000 refers to models DLM2024, DLM2022, DLM2034, DLM2032, DLM2052, DLM2054
Overview:
If you selected Decimation or P-P Compression when saving waveform data in ASCII CSV format, then the HResolution will not be equivalent to the Sampling Rate. If Decimation or P-P Compression is not selected, then ...
Overview:
The true noise floor of a Yokogawa oscilloscope is ≤ 2-3mVpp. The DL9000, for example, has approximately 280uV residual noise at 2mV/Div with input termination set to 50Ω. The residual noise may be measured by ...
Overview:
The IEC Harmonic analysis on the DL/DLM series oscilloscopes provides a rough analysis and estimation for harmonic testing. The scope will perform an FFT on the current waveform and can be used to measure the general ...
Overview:
Yes, Xviewer has the capability of opening multiple files from different DL, SL, and WE series instruments into a single window display. The only requirement for viewing files from different products is that the sample ...
Overview:
Question: I would like to confirm DC Precision when changing the position setting on DL1600. According to the specification of vertical (voltage) axis accuracy, in the case that voltage axis is set to 0.5 V/div:  DC ...
Overview:
You can express any arbitrary exponentiation, in Xviewer or DL series instruments, by using the LOG (common logarithm) and EXP (exponential) functions. For example, for C1 raised to the exponent of 0.2, the math ...
Overview:
The Offset function is used to set the vertical position of a waveform and is defined by a voltage value (V). The Position function is used to set the horizontal location of a waveform and is defined by a division ...
Overview:
The DLM2000 can save all history acquisition waveforms into one file, if the data type is set to Binary (file extension *.WDF) and History Mode is set to All. If the data type is set to ASCII, only the latest ...
Overview:
The Header Size entry, for a ASCII format data file, denotes the number of header lines in the header part of the ASCII File.
Overview:
In general, the recommended sampling rate for CAN bus or I2C analysis is 10x the bit-rate. If the waveform is not noisy, the sampling rate can be set to around 4-5x the bit-rate.

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