DSO-TC3

三合一示波器使用说明书

Digital Multimeter Instruction Manual用户须知目录01一、产品概述01

二、技术规格01

三、按键接口解析

04

四、操作及页面说明08

五、设置菜单

13

六、固件升级

14

七、常见问题解析

14

八、注意事项

15

九、生产信息15

CATALOGNOTICE TO USER

16

1. INTRODUCTION

16

2. TECHNICAL SPECIFICATIONS

16

3. KEY INTERFACE ANALYSIS

20

4. OPERATION and DESCRIPTION

24

5. MENU SETTING

31

6. FIRMWARE UPGRADE

32

7. ANALYSIS OF COMMON PROBLEMS

32

8. PRECAUTIONS

33

9. CONTACT US

34

用户须知

●本说明书详细介绍了产品的使用方法以及注意事项和相关事宜，在使
用本产品时请详细阅读手册，以便发挥产品的最佳性能。

●不要在易燃易爆的环境中使用仪器。

●仪器更换的废旧电池和报废的仪器不可与生活垃圾一同处理，请按照
国家或者当地的相关法律法规处理。

●当仪器出现任何质量问题或者对使用仪器有疑问时，可联系“菲尼瑞斯-FNIRSI”在线客服或者厂家，我们将在第一时间为你解决。

一、产品简介本产品将数字示波器、电子元器件测试仪、信号发生器、通断测试、电压测
量、温湿度测量、红外解码等功能巧妙地集成为一体，配用大尺寸的彩色
点阵TFT显示屏，内置可充电锂电池，以小巧的体积带给用户更多、更强
的实用功能，同时具有很好的便携性。

二、技术规格2.1 整机主要规格与参数
显 示 屏

2.4英寸TFT彩屏，LED背光充电规格

USB Type-C，+5V

供电电压
产品体积
支架规格

内置可充电锂电池
79*103*31mm

一体式可折叠支架
1

2.2 DSO数字示波器模式规格与参数●该示波器具有10M的实时采样率，500K带宽

●具有完整的触发功能（单次、正常、自动），无论是对于周期模拟信号还
是非周期的数字信号都能运用自如。

●最高可测量400V的电压信号。

●配备高效的一键AUTO，无需繁琐调节就能显示出被测波形。
实时采样率10MSa/s

水平时基范围

1us-10s

输入阻抗

1MΩ

触发种类

上升沿/下降沿模拟带宽耦合方式测试电压范围

垂直灵敏度(x1)

触发模式500Khz

波形冻结

AC/DC

自动测量

400V

10mV-10V

自动 正常 单次是
是

2.3 TC3元器件测试模式规格与参数●本仪器可自动识别并测量各种晶体管，包括NPN和PNP三极管、N沟道
和P沟道场效应管、结型场效应管、二极管、双二极管、可控硅等，以及电
阻、电感、电容等无源器件。

●自动检测引脚定义。

●自动解析NEC协议红外码。

●其他功能模式：包括电路通断测试、0~40V输入电压测量、PWM输出、
0~32V稳压二极管测量、DS18B20温度传感器测量、DHT11温湿度传感
器测量，等等。

2

类目

范围

三极管

β大于10小于600二极管正向压降<4.5V

稳压二极管

场效应管③
单向可控硅
双向可控硅

0.01~4.5V
0.01~32V
JFET
IGBT

MOSFET参数说明

放大倍数hfe，基极-发射极电压Ube，Ic/
Ie，集电极-发射极反向截止电流Iceo，
Ices，保护二极管正向压降Uf ①
正向压降，结电容，反向漏电流 ②（1-2-3测试区）正向压降，反向击穿电压(K-A-A测试区）反向击穿电压栅极电容Cg，Vgs下的漏极电流Id，保护二极管正向压降Uf ④

Vgs下的漏极电流Id，保护二极管正向压降Uf ④开启电压Vt，栅极电容Cg，漏源电阻Rds，保护二极管正向压降Uf ④开启电压<5V，门门极电压极触发电流<6mA

电容

25pF~100mF

电容值,损耗系数Vloss⑤电感

10uH~1000mH

电感值,直流电阻⑥

输入电压

0~40V

电阻
电池

DS18B200.01Ω~50MΩ
0.1~4.5V
0-85℃

DHT11

0-60℃/5-95%

红外遥控解码

NEC协议红外码

电阻值电压值，正负极性
电压值
温度
湿度显示用户码和数据码,并显示对应的红外波形3

注:①Ices、Iceo、Uf仅在有效时显示④只有存在保护二极管时才显示③场效应管的开启或关闭电压须小于5V⑥两脚元件且在电阻小于2.1kQ时测量电感②结电容、反向漏电流仅在有效时显示⑤Vloss仅在有效时显示

2.4 信号发生器规格与参数

信号发生器共有6种信号波形可选择，频率和幅值可调。
正弦波 1-10KHz/0-3.3V/50%

三角波 1-10KHz/0-3.3V/50%

脉冲波 1-100KHz/3.3V/0-100%

直流

方波

斜坡

1-100KHz/3.3V/50%

三、按键接口解析

1-10KHz/0-3.3V/0-100%
0-3.3V3.1 按键

复位

4

按键

操作

短按

开机/返回

短按

进入/确认操作/重新测量

长按
长按

短按
长按
短按
长按
短按
长按
短按
长按

隐藏按钮
侧面小孔

功能

操作

轻戳

关机

进入系统设置右移/切换

在示波器模式显示波形时关闭或打开参数显示
左移/切换

在示波器模式显示波形时停止或者运行
下移/切换/数值减连续切换/数值连续减
上移/切换/数值加连续切换/数值连续加

复位设备

5

功能

3.2 测试插座
小扳杆

1-2-3区

K-A-A区●共有五种不同的测试插孔为便于描述,将插座分为1-2-3区和K-A-A区(如上图)。

●测试插座在屏幕左下方，为带锁紧装置的14孔双排插座,每个插孔标记
1、2、3、K、A，标号相同者是内部短接的，作用相同。

●插座左端有个小扳杆，立起时插孔放松，此时插入或取出被测元件，转下时插孔锁紧并进行测试。

●插入被测元件并锁紧后，按键进行测试,测试仪自动识别出元件

的引脚名称及所在的测试点，并显示到屏幕。

●当测试2个引脚的元器件时，可以插入1-2-3区的任意两个不同标号的
孔中，不分顺序。

●当测试3个引脚的元器件时，可以插入1-2-3区的任意三个不同标号的
孔中，不分顺序。

●K-A-A插孔为耐压测试专区，内有约30V以上直流高压,K正、A负，用于耐压测试，不可混用。
被测元器件如稳压二极管的正极插入A、
负极插入K。

注意●测电容前要先将电容器放电,否则可能烧坏仪器●不建议在线或带电测试6

3.3 信号接口顶面均匀分布3个MCX同轴插座,它们外圈是连在一起共地的,用途分别是:【IN (0~40V)】-测试电压输入口,芯线为正,最大被测电压不可超过DC40V【DDS】-信号发生器信号输出口,输出可调脉宽的五种波形信号【DSO】-示波器测试信号输入口,最大输入电压不可超过40Vpk

注意测试连线时,应使用带有MCX插头的测试线与本仪器相连。

3.4 充电接口

●本仪器内置大容量锂电池供电,底面设置USB Type-C充电口连接5V充
电头进行充电。

●充电时指示灯红色常亮,充满电指示灯绿色常亮。

7

四、操作及页面说明

4.1 开关机

深圳市菲尼瑞斯科技有限公司

DSO-TC3 h t t p : / / w w w . f ni r s i . c n晶体管测试仪

首页面共有四个选项，短按左右键切换功能：Hz

晶体管测试仪

示波器

信号发生器

工具箱

4.2 晶体管测试仪操作及功能说明
晶体管测试仪

未知元件或已损坏

1 2 3 1 2 3 2
K A A 1 2 3 3在首页面短按左右键、体管测试仪功能，短按确认键

切换到晶
进入

晶体管测量页面如下，此为没有测量任何
元器件时。

8

晶体管测试仪

三极管(PNP)
C

3

B
E

2

1

hFE=382
Vbe=0.79V
IC=0.0mA

晶体管测试仪

稳压二极管

开始测量。

如 稳 压 管 测 量（ 注 意 ：稳 压 二 极 管 为

Vz = 24.0V

K

如三极管测量，短按

K-A-A插孔，正负极区分）
，短按

A

始测量。

开

1-2-3 区测试座使用说明选择该区适当位置、不同标号的插孔,将晶体管、电阻、电容、电感等被测元器件的引脚插入并锁紧后,点按

启动测试,等待几秒钟后,测试结

果会在屏幕上显示。

●可以检测出双极型晶体管和MOSFET内部的保护二极管并显示在屏幕上。

●测量双极型晶体管的电流放大系数(hFE)和发射结的导通电压。
达林顿
晶体管可以通过高阅值电压和高电流放大系数识别。

●测量三极管,其参数只有在测量有效时才会显示。

●二极管的等效电容C和反向漏电流只有在测量有效时才会显示。

●场效应管的开启或关断电压需小于5V,否则测出的结果只有它的等效
参数(二极管、电容等)。

●可控硅的开启电压需小于5V,此外,其维持导通的触发电流需小于6mA,
否则无法正确测量。

9

●测量电容时显示的vLoss是损耗、衰减的意思,这个值越大,电容性能越

差,越接近报废。
20pF以下的电容,经验做法是并一个20pF的电容测试。

●测量电感的量程为10uH-1000mH,在电阻小于2.1kΩ时才进行电感测量。空心线圈和功率电感不能直接测电感,建议尝试串联合适的色环电感测试。

●测试座输出电流为6MA,需要更大电流驱动的可控硅。

●LED检测为二极管,正向压降比正常值偏高。双发光二极管检测为双二极管。
检测同时发光二极管会闪亮。

K-A-A测试座说明

将被测元器件如稳压二极管的正极插入A、负极插入K,锁紧插座后点按启动测试。
本仪器能测量的稳压管的最大范围为24V。

4.3 示波器操作及功能说明
AutoVmax:0.00V
Vmin:-0.00V
Vave:0.00V
Vrms:0.00V

Vpp:0.00V
Fre:0.012V
Dut:2.0%
Cyc:00.200ms

在首页面短按左右键

波器功能，短按确认键

、

页面如图。
10mV

X1

100us

AC

RUN

屏幕底下和左上角的参数可以通过短按左右键后按顺序一个一个切换，上下键自动调整波形，长按左键、、 切换或调整；短按

选择，选中效果

切换暂停STOP和运行RUN。

●为触发边沿指示图标触发模式指示图标。

切换到示

进入示波器

键AUTO,●Auto表示自动触发, Single表示单次触发,Normal表示正常触发●为垂直灵敏度,表示垂直方向一大格代表的电压。
10

●1X/10X模式指示图标,这个必须和探头手柄上的1X/10X开关设置保持一致,若探头是1X档,那么示波器也要设置为1X档,1X测量土40V电压,
10X测量土400V电压。

●100uS为水平时基,表示水平方向一大格代表的时间长度。

●AC/DC为输入耦合方式指示图标,AC表示交流耦合,DC表示直流耦合。

●RUN/STOP为运行暂停指示图标,RUN表示运行,STOP表示暂停，长按
左键切换。

实时测量参数长按右键可以显示/隐藏在屏幕上半部分显示的8个实时测量参数：
Vmax=最大电压Vpp=峰峰电压

Vave=平均值Dut=占空比Vmin=最小电压

Fre=频率

Vrms=有效值电压

Cyc=周期

示波器探头●使用MCX插头的示波器探头插入顶面【DSO】插孔中,先调整好探头上的衰减档,将探头的接地夹接到被测电路的“参考地”。

●探头尖端或勾子稳妥接到电路的被测节点,在屏幕上观察被测点的电
压波形。

注意

●探头衰减倍率应与被测信号电压相匹配,不可测量超过最大量程的电压信号。
●测量超过安全电压的信号时,人体不得碰触仪器的外露金属部分,
以免遭受电击。
11

4.4 信号发生器操作及功能说明
1.正弦波

信号发生器

在首页面短按左右键

2.方波

3.脉冲波

4.三角波

共有6种信号波形可选择：
●正弦波

●方波

按右键

可改变数值，短按左键

短按上下键

●三角波

●直流

发生器页如图。

幅值： 3 . 3 V

5.斜坡

切换到信

号发生器功能，短按确认键频率：10000 Hz

6.直流

、

●脉冲波

●锯齿波

、 切换，右键进入信号可进入选择改变频率还是幅值，再短退出。
（频率上限为10000Hz，幅值上限为3.3V）

4.5 工具箱
1.通断测试

2.电压测试

3.DS18B20
4.DHT115.红外解码

工具箱

OL. Ω

6.自动校准在首页面短按左右键
具箱，短按确认键
图。

工具箱共有6种功能选项：

、

切换到工

进入具箱页面如●通断测试（测通断）●DHT11温湿度测试

●DS18B20数字温度测试

●自动校准

●红外解码

●电压测试
短按上下键

、 切换，切换到相应的功能后会自动测量。

●通断测试：利用测试座的测试插孔1、2、3任意两个角进行连续的电阻测试，若电路为低阻，则判断为“通”，响起蜂鸣声 。
12●电压检测：需把MCX测试线插入顶端插孔【IN (0~40V)】中，对测试线间的电压进行检测。

●DS18B20：按屏幕提示将温度传感器插入测试座后进行测量。

●DHT11：按屏幕提示将温湿度传感器插入测试座后进行测量（注意：
DHT第三脚悬空不接）。

●红外解码：
在测试仪待测状态，将红外遥控器对准测试仪面板上的“IR"标记，按下遥控器按键，仪器自动开始接收红外信号并进行解码处理，解码成功后将显示用户码和数据码，并显示对应的红外波形。
如果解码

失败或无法解码，则不显示用户码和数据码，此时如果在测试仪界面则
不能进入红外解码界面，如果在红外解码界面则仍然显示上次成功的解码信息。

●自动校准：按提示将三脚的短路线插入测试座的1-2-3插孔中,自动开始校准,校准过程中根据提示断开短接线后,等进度条行进到100%便完成
了对本仪器当前模式的校准,无需进行其它操作。

注意外部电路必须处于断电状态，否则可能损坏仪器。

五、设置菜单
1.开机LOGO设置页面

2.系统语言3.系统音量4.背光亮度5.默认模式

6.关于

短按上下键

长按
开

进入系统设置页面如图。

可设置项目有：●开机LOGO

●背光亮度

●系统音量

●关于

●系统语言
、 切换，短按左右键
13

、

●默认模式
调整参数或切换状态。

六、固件升级打开升级上位机软件，电脑与设备之间USB线连接，然后先下键机键再按开进入升级页面，最后在上位机页面选择相应的固件升级即完成固件升级。

七、常见问题解析

问：如何判断电池是否充满?

答:电池充满后,充电指示灯会由红色变为绿色。
问：为什么测试的波形左右晃动不停,无法固定?

答:需要调节触发电压,即右边的黄色箭头。在触发模式下,按上下键调节触发电压。把黄色指示箭头调节到波形上下之间后,波形即可被触发以
及固定。

问：为什么测一节电池或其他直流电压时没有波形?

答:电池电压信号是稳定直流信号,是没有曲线波形的。
在直流耦合模式下调节垂直灵敏度,会出现一条往上或者往下的偏移直线的波形,如果是交流耦合,则无论怎么调节都没有波形。

问：为什么测量的市电220V波形并不是很标准的正弦波,有失真?

答:市电电网中一般都带有污染,含有较多的高次谐波成分,这些谐波叠加
在正弦波上就会表现出一个失真的正弦,属于正常现象。一般市电波形
都是失真的,和示波器本身无关。

问：为什么测量MOSFET、IGBT得出的结果是二极管、电容等参数?

答:由于MOSFET或IGBT的开启或关断电压大于5V(芯片最大供电电压)导

致MOSFET或IGBT无法正常开启或关断,所以只能测出它的等效参数。
14

八、注意事项●收到设备后,请在充满电后使用。

●测量高压时,禁止碰触示波器任何金属部位,以免造成触电风险。
●尽量不要在充电时,进行高压测试。

●请勿将本机放置在不稳固或有可能受到强烈震动的地方。

●请勿将本机放置在高湿度、多尘、阳光直射、户外或接近热源的地方。

●本仪器内置3.7V可充电锂电池供电,长时间使用时,请使用电源适配器
供电,延长电池使用寿命。

●长时间不使用时,应将电池放电至3.7V后存放,且需每季度充放电循环一次。

●请使用说明书规格范围内的电压进行充电。

●使用示波器模式的时候要注意档位的选择,示波器的档位跟探头的档
位要保持一致。

●校准时,需要拔掉BNC探头,或者探头正负极短接。

九、生产信息产品名称：三合一数字示波器

品牌/型号：菲尼瑞斯/DOS-TC3
服务电话：0755-83242477

生产商：深圳市菲尼瑞斯科技有限公司
网址：www.fnirsi.cn

地址：广东省深圳市龙华区大浪街道伟达工业园C栋西边8楼
执行标准：GB/T 15289-2013

15

NOTICE TO USER●This manual introduces the use method, precautions and related matters of
the product. When using this product, please read the manual carefully inorder to obtain the best performance of the product.

●Do not use the instrument in a ﬂammable and explosive environment.

●The used batteries cannot be disposed of with domestic waste. Please follow
the national or local relevant laws and regulations to deal with it.

●If there is any quality problem with the instrument or you have questions

about it’s use, you can contact FNIRSI online customer service or the
manufacturer, we will promptly solve it for you.

1.INTRODUCTION
This product combines a digital oscilloscope, electronic component tester,
signal generator, continuity test, voltage test, temperature and humidity
measurement, infrared decoding and other functions are skillfully integrated. It

is equipped with a large-size color TFT display, built-in rechargeable lithium

battery, brings users stronger and more practical functions with good portability.

2.TECHNICAL SPECIFICATIONS
2.1 Speciﬁcations and parameters of the device
Display screen

2.4 inch TFT color screen, LED backlight

Charging speciﬁcations

USB Type-C，+5V

Supply voltage

Product volume

Bracket speciﬁcations

Rechargeable lithium battery
79*103*31mm

All-in-one foldable stand16

2.2 Speciﬁcations and parameters of theDSO Digital Oscilloscope●The oscilloscope has a real-time sampling rate of 10MSa/s and a bandwidth of
500KHz.

●With complete trigger function (single, normal, automatic), no matter if
you’re using periodic analog signals or non-periodic digital signals.

●Maximum measured voltage signal is 400V.

●Equipped with eﬃcient AUTO, the measured waveform can be displayed
without cumbersome adjustments.
Real-time sample rate

10MSa/s

Input resistance

1MΩ

Analog Bandwidth

500KhzCoupling method

AC/DC

Test voltage range

400V

Vertical Sensitivity (x1)

10mV-10V

Horizontal time base range

1us-10s

Trigger mode

Auto / Normal / Single

Trigger type

Rising edge / Falling edge

Waveform Freeze

Yes

Automatic measurement

Yes

17

2.3 Speciﬁcations and parameters of
TC3 component test mode

●The instrument can automatically identify and measure various transistors,
including NPN and PNP triodes, N-channel and P-channel mosfet, junction

mosfet, diodes, dual diodes, thyristors, and resistors, inductors, capacitorsand other passive components.

● Automatic detection of pin deﬁnition.

●Automatically analyze NEC protocol infrared code.

●Other functional modes: Including circuit continuity test, 0~40V input voltage
measurement, PWM output,0~32V regulated diode measurement, DS18B20
temperature sensor measurement, DHT11 temperature and humidity sensor
measurement, etc.

Category
Triodes
DiodesReglulated
diode

Range

β is greaterthan 10 andless than 600

Magniﬁcation hfe, base-emitter voltage Ube, Ic/
Ie, collector-emitter reverse cut-oﬀ current Iceo,
Ices, protection diode forward voltage drop Uf①

0.01~4.5V(1-2-3 test area) forward voltage drop, reverse
breakdown voltage.

Forward voltage
drop <4.5V

0.01~32VJFET

MOSFET③

SCRs

TRIAC

Capacitor

Parameter Description

IGBT

MOSFET

Turn-on voltage<5V, gate Pole
trigger current<6mA

5pF~100mF

Forward voltage drop, junction capacitance,
reverse leakage current②(K-A-A test area) reverse breakdown voltage

Gate capacitance Cg, drain current Id under Vgs,
protection diode Tube forward pressure drop Uf④
Drain current Id under Vgs, protection diodeforward voltage drop Uf④
Turn-on voltage Vt, gate capacitance Cg,
drain-source resistance Rds, protection Diodeforward voltage drop Uf④
Gate voltage
Capacitance value, loss factor Vloss⑤18

CategoryResistorRange

0.01Ω~50MΩ

Inductor

10uH~1000mH

Input voltage

0~40V

Battery

DS18B20
DHT11

Infrared
remotedecoding

0.1~4.5V
0-85℃

0-60℃/5-95%
NEC protocol
infrared code

Parameter Description

ResistanceInductance value, DC resistance⑥

Voltage value, positive and negative polarity
Voltage value
Temperature
Humidity

Display user code and data code, and display
the corresponding infrared waveform.

NOTE：①Ices, Iceo, Uf are only displayed when they are valid.
② Junction capacitance and reverse leakage current are only displayed when they
are valid.
③The turn-on or turn-oﬀ voltage of the FET must be less than 5V.
④ Displayed only when there is a protection of diode.
⑤Vloss is only displayed when it is valid.
⑥Two-legged components and measure the inductance when the resistance is lessthan 2.1kΩ.

2.4 Speciﬁcations and parameters of
the signal Generator

The signal generator has a total of 6 waveforms to choose from, with adjustablefrequency and amplitude.
Triangle wave
Square wave

1-10KHz/0-3.3V/50%
1-100KHz/3.3V/50%
19

Pulse wave

1-100KHz/3.3V/0-100%

Triangle wave

1-10KHz/0-3.3V/50%

DC

0-3.3V

Ramp

1-10KHz/0-3.3V/0-100%

3. KEY INTERFACE ANALYSIS
3.1 Button

Restoration

Hide button
Side hole

Operation
Tap

20

Function
ResetButtonOperation

Function

Short press

Start up/Return

Short press

Enter/conﬁrm operation/remeasureLong press
Long press

Short press
Long press

Short press
Long press

Short press
Long press

Short press
Long press

OFFEnter system settings
Move right/toggle

To turn oﬀ or on the parameter display whendisplaying a waveform in oscilloscope mode.
Move left/switch

Stop or run while displaying waveforms inscope mode.
Move down/switch/value minus

Continuous switching/value continuous
subtraction.
Move up/Switch/Add

Continuous switching/continuous additionof values.

3.2 Test socket
small rod

1-2-3 area

K-A-A area21

●A total of ﬁve diﬀerent test sockets are divided into 1-2-3 area and K-A-A area
for the convenience of description(as pictured above).

●The test socket is at the bottom left of the screen, it is a 14-hole double-row
socket with a locking device, and each socket is marked

1, 2, 3, K, A, those with the same label are short-circuited internally, and have thesame function.

●There is a small lever at the left end of the socket. When standing up, thesocket is relaxed. At this time, insert or take out the component under test,
turn the socket is locked and tested when lowered.

●After inserting the tested component and locking it, press

to test, andthe tester will automatically identify the pin name of the component and thetest point where it is located are displayed on the screen.

●When testing 2-pin components, you can insert any two diﬀerent labels in the
1-2-3 area holes, in any order.

●When testing 3-pin components, you can insert any three diﬀerent labels in
the 1-2-3 area holes, in any order.

●The K-A-A jack is a special area for withstand voltage testing, which contains a
DC high voltage of about 30V or more, K is positive and A is negative, and isused for withstand voltage pressure test, do not mix. Insert the anode of thecomponent under test, such as a Zener diode, into A and the cathode into K.

Notice●Discharge the capacitor before measuring the capacitance, otherwise it
may burn out the instrument.
●It is not recommended to test online or live.

22

3.3 Signal interface

Three MCX coaxial sockets are evenly distributed on the top surface, andtheir outer rings are connected together for a common ground, and they
are used for diﬀerent purposes:【IN (0~40V)】-Test voltage input port, the core wire is positive, the maximum
measured voltage cannot exceed DC40V.

【DDS】-Signal generator signal output port, output ﬁve waveform signals withadjustable pulse width.

【DSO】-Oscilloscope test signal input port, the maximum input voltage cannot
exceed 40Vpk.

NoticeWhen testing the connection, use the test line with MCX plug to connect
with the instrument.

3.4 Charging interface●The instrument is powered by a built-in large-capacity lithium battery, andthe bottom surface is equipped with a USB Type-C charging port connected toa 5V charger.

●The indicator light is always red when charging, and the indicator light isgreen when fully charged.

23

4.OPERATION and DESCRIPTION
4.1 Switching on and oﬀ

深圳市菲尼瑞斯科技有限公司

DSO-TC3 h t t p : / / w w w . f ni r s i . c n

M-Tester

There are four options on the home page, short press the left and rightkeys to switch functions:Hz

M-Tester

Oscilloscope

Generator

Tools

4.2 Operation and function descriptionof the transistor tester
M-TesterNo, unknown, or
damaged part1 2 3 1 2 3 2
K A A 1 2 3 3Short press the left and right keys/

short press the conﬁrmation key

toto switch to the transistor detector,

enter the transistor measurement page (asfollows), this is the situation under notmeasured any components.

24

M-Tester

Transistor(PNP)
C

1

B
E

3

2

hFE=382
Vbe=0.79V
IC=0.0mA

M-Testerto start measurement.

For reglulated diode measurement (Note:

Zenerreglulated diode is K-A-A socket, positive

Vz = 24.0V

K

For triode measurement, short presst

Aand negative), short press
measurement.

to start

1-2-3 Zone Test Bench Instructions for Use

Select an appropriate position in this area and jacks with diﬀerent labels, andconnect transistors, resistors, capacitors, inductances, etc. After the pins of thecomponents are inserted and locked, click

to start the test, wait for a

few seconds, the result will be displayed on the screen.

●The inside bipolar transistors of the Protective diodes and MOSFETs can bedetected and displayed on the screen.

● Measure the current ampliﬁcation factor (hFE) of the bipolar transistor andthe conducting voltage of the emitter junction. Darlington transistors can be

identiﬁed by the high threshold voltage and high current ampliﬁcation factor.

●Measuring triode, its parameters will only be displayed when the measurement is valid.

●The equivalent capacitance C and reverse leakage current of the diode will
only be displayed when the measurement is valid.

●The turn-on or turn-oﬀ voltage of the mosfet must be less than 5V, otherwise
the measured result is only its equivalent parameters (diodes, capacitors, etc.).
25

●The turn-on voltage of the thyristor must be less than 5V, in addition, thetrigger current for maintaining conduction must be less than 6mA,Otherwise
it cannot be measured correctly.

●The vLoss displayed when measuring capacitance means loss andattenuation. The larger the value, the worse the capacitance performance.For
capacitors below 20pF, the rule of thumb is to test with a 20pF capacitor.

●The measuring range of inductance is 10uH-1000mH. The inductance is only
measured when the resistance is less than 2.1kΩ. Air-core coils and power

inductors cannot directly measure the inductance. It is recommended to try
to connect a suitable color ring electrode in series to test.

●The output current of the test socket is 6MA, which requires a SCR driven by alarger current.

●The LED is detected as a diode, and the forward voltage drop ratio is higher

than the normal value. Dual LEDs are detected as dual diode. The leds will
ﬂash while detecting.

K-A-A Test Socket Instructions

Insert of the component postive, such as the reglulated diode,into A and the cathode into K, lock the socket and click
to start the test. The max measurement range of the reglulated
diode is 24V.

4.3 Operation and function description of
the oscilloscope
Auto
Vmax:0.00V
Vmin:-0.00V
Vave:0.00V
Vrms:0.00V

10mV

X1

Vpp:0.00V
Fre:0.012V
Dut:2.0%
Cyc:00.200ms

100us

AC

RUN

On the home page, short press the left andright keys/

to switch to the

conﬁrmation key

to enter theoscilloscope function, and short press theoscilloscope page（as shown）.
26

The parameters in the bottom and upper left corners of the screen can beselected by short pressing the left and right keys/

, and switching

one by one after the eﬀect is selected, and the up and down keys
to switch or adjust; short press thethe shape, and long press the left key/

to switch between STOP and RUN.

●The trigger mode indicator icon is the trigger edge indicator icon.

●Auto means automatic trigger, Single means single trigger, Normalmeans normal trigger.

● The vertical sensitivity, indicating the voltage represented by alarge grid in the vertical direction.

●1X/10X mode indicator icon must be kept consistent with the
1X/10X switch setting on the probe handle, if the probe is 1X, thenthe oscilloscope should also be set to 1X, 1X measures ± 40V
voltage, 10X measures ± 400V voltage.

●100uS is the horizontal time base, which means the length of time
represented by a large grid in the horizontal direction.

●AC/DC is the indicator icon of the input coupling mode, AC means
AC coupling, and DC means DC coupling.

●RUN/STOP is the indicator icon for running/pause, RUN meansrunning, STOP means pause, long press the left button to switch.

27,

AUTO key to automatically adjust

Real-time measurement parameters

Long press the right button to show/hide the 8 real-time measurement parameters displayed in the upper part of the screen:
Vmax=Maximum voltage

Vpp=Peak-to-Peak voltage

Vave=Average value

Dut=Duty

Vmin=Minimum voltage

Fre=Frequency

Vrms=RMS voltage

Cyc=Cycle

Oscilloscope probe●Insert the oscilloscope probe with MCX plug into the [DSO] jack on
the top surface, ﬁrst adjust the attenuation gear on the probe, andconnect the ground clip of the probe to the "reference ground" of thetested circuit.

●Connect the probe tip or hook to the measured node of the circuit,and observe the voltage waveform of the measured point on thescreen.

Notice●The attenuation factor of the probe should match with the voltage of themeasured signal, and the voltage signal exceeding the maximum range
cannot be measured.

●When measuring signals exceeding the safe voltage, must not touch theexposed metal parts of the instrument to avoid electric shock.

28

4.4 Operation and function description of
the signal generator
1.SineGenerator

On the home page, short press the left andright keys

2.Square3.Pulse

4.Triangle

10000 Hz
Freq：

Amp： 3 . 3 V

5.Ramp

6.DC/

to switch to the signal

conﬁrmation key

to enter the signal

generator function, and short press thegenerator page（as shown）.

There are 6 signal waveforms to choose from:●Sine wave

●Sawtooth wave

●Square wave

●Pulse wave

●Triangle wave

Short press the up and down keys

●DC/, and the right key

toto change the value, short press the left key

tochoose to change the frequency or amplitude, and then short press
the right key

exit. (Frequency upper limit is 10000Hz, amplitude value capped at
3.3V)

4.5 Toolbox
1.Tongduan
2.Voltage

3.DS18B20
4.DHT11

5.IR Decode

6.Caliberate

Tools

OL. Ω

On the home page, short press the left andright keys/

to switch to thetoolbox, and short press the conﬁrmation
key

to enter the toolbox page asshown in the ﬁgure.

29

There are 6 functions to choose from:●DHT11 temperature andhumidity test

●Continuity test
●Voltage test

●Infrared decoding●DS18B20 digitaltemperature test
Short press the up and down

●Automatic calibration/, after switching to the corresponding

function, it will automatically measure.

●Continuity test: Use any two corners of the jack 1, 2, and 3 of the test socket

to conduct continuous resistance tests. If the circuit is low resistance, it will be
judged as "connected" and a buzzer will sound.

●Voltage detection: Insert the MCX test line into the top jack [IN (0~40V)] to
detect the voltage between the test lines.

●DS18B20: Follow the prompts on the screen to insert the temperature sensor
into the test socket for measurement.

●DHT11: Follow the prompts on the screen to insert the temperature andhumidity sensor into the test socket for measurement (Do not connect thethird pin of the DHT).

●Infrared decoding: When the tester is under test, point the infrared remotecontrol at the "IR" mark on the tester panel, press the button on the remotecontrol, and the instrument will automatically start receiving infrared signals
and performing decoding processing. After successful decoding, the user

code will be displayed and data code, and display the corresponding infrared
waveform. If the decoding fails or cannot be decoded, the user code and datacode will not be displayed. At this time, if you are on the tester interface, you
cannot enter the infrared decoding interface. If you are on the infrared

decoding interface, the last successful decoding information will still be
displayed.

30

●Automatic calibration: Insert the three-pin short wire into the 1-2-3 jack of
the test socket according to the prompts, and the calibration will start

automatically. After disconnecting the short wires according to the prompts inthe calibration process, wait until the progress bar reaches 100% to complete

the calibration under the current mode of the instrument, no otheroperations are required.

Notice

The external circuit must be powered oﬀ, otherwise the instrument may bedamaged.

5. MENU SETTING
1.LOGO

Setup

2.Language

Long pressOn

3.Volume

4.Brightness

to enter the system setting

page as shown in the ﬁgure.

5.Default

6.About

The conﬁgurable items are:●Boot LOGO

●System language●System volume●Backlight brightness

Short press the up and down keys
right keys ,//●Default mode
●Aboutto switch, short press the left andto adjust parameters or switch states.

31

6.FIRMWARE UPGRADEOpen the upgrade software on the host computer, connect the computer
and the device with a USB cable, then while pressing
power key

key, press theto enter the upgrade page. Finally select the corresponding

ﬁrmware upgrade on the host computer page to complete the ﬁrmware
upgrade.

7.ANALYSIS OF COMMON PROBLEMS
Q: How to judge whether the battery is fully charged?

A: After the battery is fully charged, the charging indicator will change
from red to green.

Q: Why does the test waveform keep shaking from side to side andcannot be ﬁxed?

A: The trigger voltage needs to be adjusted, which is the yellow arrow on

the right. In trigger mode, press the up and down keys to adjust trigger
voltage. After adjusting the yellow indicator arrow between the upperand lower of the waveform, the waveform can be triggered and ﬁxed.

Q: Why is there no waveform when measuring a battery or other DC
voltage?

A: The battery voltage signal is a stable DC signal without a curved

waveform. Adjust the vertical sensitivity in the DC coupling mode, there
will be an upward or downward oﬀset straight line waveform, if it is AC
coupling, no matter how you adjust it, there will be no waveform.

Q: Why is the measured 220V mains waveform not a standard sine
wave with distortion?

A: The mains power grid is generally polluted and contains more high-order harmonic components. These harmonics are superimposed, so a

distorted sine will appear on the sine wave, which is a normal phenomenon. General mains waveforms are all distortion, nothing to do withthe oscilloscope itself.

32

Q: Why are the parameters of diodes and capacitances obtained
when measuring MOSFETs and IGBTs?

A: Because the turn-on or turn-oﬀ voltage of the MOSFET or IGBT isgreater than 5V (the maximum supply voltage of the chip), the MOSFET
or IGBT cannot be turned on or oﬀ normally, so only its equivalentparameters can be measured.

8. PRECAUTIONS●After receiving the device, please use it after it is fully charged.

●When measuring high voltage, do not touch any metal part of the oscilloscope
to avoid the risk of electric shock.

●Try not to perform high voltage test while charging.

●Do not place the machine in an unstable place or where it may be subject tostrong vibrations.

●Do not place the machine in places with high humidity, dust, direct sunlight,
outdoors or near heat sources.

●The instrument is powered by a built-in 3.7V rechargeable lithium battery,please use a power adapter when using it for a long time in order to prolong
battery life.

●When not in use for a long time, the battery should be discharged to 3.7V
before storage, and it needs to be charged and discharged every quarter.

●Please use the voltage within the range speciﬁed in the manual for charging.

●When using the oscilloscope mode, pay attention to the selection of the
1X/10X attenuation, the attenuation of the oscilloscope needs to be same as
the attenuation of the probe.

●When calibrating, it is necessary to unplug the BNC probe, or short thepositive and negative poles of the probe.

33

9.Contact US
Any FNIRSI'users with anyquestions who comes to contact us wiil have our
promise to get asatisfactory solution + an Extra 6-Month Warranty to thanks
for yoursupport!
By the way, We have created an interesting community, welcome to contact
FNIRSI staﬀ to join our community.

Shenzhen FNIRSI Technology Co.,LTD.

West of Building C,Weida Industrial Park,Dalang Street,
Add.：
Longhua District,Shenzhen,Guangdong

E-mail：fnirsioﬃcial@gmail.com (Business)fnirsioﬃcialcs@gmail.com(Equipment service)

Tel：0755-83242477 / +8613536884686

34

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