Jinhan JHJDS3012A User manual

1
Foreword
Dear users
：
Hello
！
Thank you for purchasing a new handheld oscilloscopes from Jin Han electronic. In order to properly
use this instrument
，
please read the full text of this manual carefully before using the instrument
，
especially about the "safety precautions" part.If you have finished reading this specification
，
we
recommend that you instructions for proper custody
，
together with the instrument placed or placed where
you can access at any time
，
For future inspection during use.
Copyright Information
Hefei Jin Han Electronic Technology Co., Ltd. All rights reserved.
Jin Han-electronic products by China or other countries patent protection
，
including been made or pending
patent applications.The Company reserves have to change product specifications and prices right.Jin Han
All rights reserved.Licensed software products are all made of Jin Han
，
protected by national copyright
laws and international treaty provisions.
If the original purchaser from the date of purchase of the product within two years, the products are sold
or transferred to third parties, the warranty period shall be the date of the products from the original buyer of

2
gold from Jin Han or authorized distributors from two year.Probes and other accessories and fuses are not a
guarantee of protection.
If proven applicable warranty period the product is defective, Jin Han discretion to repair the defective
product without charge for parts and labor costs, or (determined by Jin Han) with an equivalent product to
replace the defective product.Jin Han for warranty parts, modules and replacement products may be new or
reconditioned to like new performance.All components, modules and products culvert replacement will
become the property of Jin Han.
Hereinafter referred to "Customer" means, according to a statement of the rights guaranteed by the
provisions of the person or entity.To obtain service under this warranty, Customer must notify the Jin Han
defects during the applicable warranty period, and for the performance of services to make the appropriate
arrangements.Customer shall be responsible for packaging and shipping the defective product to the
service center designated Jin Han, while prepaid freight and provide a copy of proof of purchase of the
original purchaser.For Hong Kong, Macao and Taiwan compatriots and overseas customers, if the product
is returned to the service center, customers should be responsible for paying all shipping charges, duties,
taxes and any other fees.
This warranty does not apply to any defects due to normal wear and tear accident, machine parts, the
use of the product outside the scope of the provisions of, or improper use or improper or inadequate
maintenance caused by failure or damage.Jin Han no obligation to provide the following services in
accordance with the provisions of this warranty:
a)
Jin Han-service personnel to not to damage the product installation, repair or maintenance repairs caused;
b)
Repair damage caused by improper use or connection to incompatible equipment caused;

3
c)
Any damage or malfunction to use the service personnel is not Jin Han caused battery repair;
d)
Maintenance has been modified or integrated with other products (if such modification or integration
increases the time or difficulty of servicing the product).
This is guaranteed by Jin Han-made for this product, used to replace any other express or implied.Jin
Han and dealers refused for a particular purpose of merchantability or fitness for any implied warranty.In the
case of breach of this warranty, Jin Han is responsible for the repair or replacement of defective products is
the sole and exclusive remedy available to customers.No matter whether Jin Han and dealers are pre-
advised of the possibility of any indirect, special, incidental or consequential damages, Jin Han and
distributors of these damage are not responsible.
General safety requirements
The following safety precautions to avoid injury and prevent this product or any other product connected
thereto damage.To avoid possible danger,be sure to use this product in accordance with the provisions.
Only trained personnel to perform maintenance procedures.
1.
Avoid fire and personal injury
●
Correct plug and pull
When the probe or test leads are connected to a voltage source Do not accessible.

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●Properly connected probe
The same probe ground and ground potential,do not connect the ground wire to a high voltage. And during
the test, do not touch the exposed contacts and components.
●
View all terminal ratings
Inorder to avoid the impact of fires and excessive current, please view all ratings and markings of this
product. Please refer to the product before connecting the product instructions for more information about
ratings.
●Do not open the machine casing operations
If the cover or panel has been removed, do not operate this product.
●Avoid exposed circuitry
Do not touch exposed connections and components of the boot.
●
If you suspect a faulty product
，
do not operate
If you suspect that the product has failed, Please professional service personnel.
●
Maintain adequate ventilation
●Do not operate in wet conditions
●Do not operate in flammable and explosive environment
●Please keep this product surfaces clean and dry
2. Safety Terms and mark
This manual terminology.The following terms may appear in this manual:

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Terms on the Product: These terms may appear on the product
DANGER: Indicates that there is a direct risk of harm exists near the mark.
WARNING: Indicates a potentially dangerous harm nearby markers.
Note: that of the product, and other potentially dangerous property
Symbols on the Product: These symbols may appear on the product
Warning
Warning
Warning
Warning of
of
of
of high
high
high
high pressure
pressure
pressure
pressure Protective
Protective
Protective
Protective earthing
earthing
earthing
earthing Note:
Note:
Note:
Note: please
please
please
please refer
refer
refer
refer to
to
to
to the
the
the
the manual
manual
manual
manual
Measuring
Measuring
Measuring
Measuring ground
ground
ground
ground terminal
terminal
terminal
terminal
WARNING: Warning statements indicate might endanger the
safety of life conditions and behavior.
Note: Note the statement pointed out that this product could
result in property damage and other conditions and behavior.

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Before the speech
This manual introduces JHJDS30 series with information about the operation of the digital
storage oscilloscope. Includes the following chapters in this manual:
◆ User guide: Simple introduces the portable digital storage oscilloscope front panel, the user
interface, function and probe compensation.
◆ Function is introduced and the operation: The oscilloscope, signal generator, multimeter,
recorder, the center of the serial port function and operation is introduced in detail.
◆ Application example: Provide some measuring examples, reference for readers.
◆ System prompts and troubleshooting:
◆ Service and support:
Book contains the following four hand-held digital storage oscilloscopes; specific model is
shown in the table below:
Type no. Pass way With wide Real-time
sampling
The depth of
the storage

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rate
JHJDS3012A Single channel+ multimeter
+signal generator + recorder +
serial port center
30Mhz 250MSa/s 16Kpts
JHJDS3012E Single channel + signal generator
+ recorder + serial port center
30Mhz 250MSa/s 16Kpts
JHJDS3022A Dual channel + multimeter, signal
generator + recorder + serial
port center
30Mhz 250MSa/s 16Kpts × 2
JHJDS3022E Dual channel + signal generator +
recorder + serial port center
30Mhz 250MSa/s 16Kpts × 2
JHJDS30 series handheld digital storage oscilloscope to users with simple and clear front
panel function, for basic operation. Each letter or symbol of the labeled buttons are marked
with appropriate functions, the user can more intuitive, conforms to the use of traditional
instruments used, the user does not have to spend a lot of time to learn and familiar with can
skilled use. To speed up adjustment, easy to measure, the user can press the "AUTO" button; the
instrument is suitable for waveform and gear position.

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In addition to ease of use, JHJDS30 series handheld digital storage oscilloscope has faster
measurement task need high performance indicators and powerful. Through 250 Msa/s real-time
sampling, can be observed on the JHJDS30 series handheld digital storage oscilloscope signal
faster. Powerful and analyzes waveform makes it easy to capture and analysis. Clear liquid
crystal display and function of mathematical operations, making it easy for users to more
quickly and clearly to observe and analysis the signal problems.
In addition, JHJDS30 series handheld digital storage oscilloscope function signal generator
and digital channel is integration, the user can according to need to bring up the usual signal
waveform, and can be accessed by users digital channel analysis data, greatly satisfy the user
requirements.
JHJDS30 series digital oscillographic table provides unique waveform display interface and a
variety of measurement functions. Can be widely used in engineering survey, out testing,
automotive electronics, frequency converter, research, design, education and training, and
other fields, including virtual circuit measurement and fault.
From the performance characteristics of given below, can understand the series handheld digital
storage oscilloscope how to satisfy your measurement requirements.
◆ Set the oscilloscope, signal generator, multimeter functions in one isolated
oscilloscope/oscillographic table

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◆ You can observe signal data through serial port center
◆ Built-in recorder function
◆ A serial port center
◆ With digital channels
◆ 4.3 inch 16-bit true color TFT 400*272
◆ Maximum 30 MHZ bandwidth, sampling rate 250 Msa/s, 16 KPTS storage depth
◆ Support USB firmware upgrade
◆ Have the edge trigger function, can automatically detect support （ 50Hz — 60MHz ）
◆ A variety of waveform mathematical functions together
◆ Support Chinese and English menu display
◆ Cursor support time, voltage measurement
◆ Automatic, normal, single trigger mode
◆ Support automatic shutdown function and power saving mode, the time can be set up
◆ The cursor function
◆ Screenshot of waveform can be retained and through the USB into the computer
◆ Bring support to facilitate placement
◆ Through the USB power supply
◆ Super-long standby: single battery can work continuously for 4 hours

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JHJDS30 series hand held digital storage oscilloscope attachments:
JHJDS3012E/JHJDS3022E Oscilloscope JHJDS3012A/JHJDS3022A Oscilloscope
◆ The directions for use ◆ The directions for use
◆ A copy of the certificate of approval ◆ A copy of the certificate of approval
◆ One （ JHJDS3022E has two ） 1: 1/10: 1 probe ◆ One （ JHJDS3022A has two ） 1: 1/10: 1 probe
◆ A clipped ◆ A clipped
◆ Two lithium batteries ◆ A pair of pens and multimeter
◆ A lithium battery charger ◆ Two lithium batteries
◆ A lithium battery charger

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Directory
The first chapter Introductory guide
........................................................................
1
1.1 General inspection
...........................................................................................................
1
1.2 The front panel and the user interface
....................................................................
2
1.3 Holding a storage oscilloscope connected input
....................................................
6
1.4 Functional check
...............................................................................................................
7
1.5 The probe compensation
...................................................................................................
7
1.6 Preliminary using oscilloscope display signal automatically
..........................
9
The second chapter Oscilloscope operation
.............................................................
10
2.1 End connections
.................................................................................................................
11
2.2 Automatic measurement
.....................................................................................................
11
2.3 Display system
...................................................................................................................
11
2.4 The vertical system
.........................................................................................................
13
2.5 The level of system
.........................................................................................................
18
2.6 The trigger system
...........................................................................................................
19
2.7 The storage system
...........................................................................................................
21
2.8 Auxiliary function
...........................................................................................................
23

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2.9 The cursor measurement
...................................................................................................
24
2.10Mathematical function
.....................................................................................................
25
The third chapter Signal generator
.............................................................................
26
3.1 User interface signal generator is introduced
......................................................
27
3.2 Signal generator operating instructions
..................................................................
27
3.3 Custom waveform signal generator
................................................................................
29
The fourth chapter Multimeter function is introduced and the operation
.
4.1 Multimeter interface is introduced
............................................................................
30
4.2 Multimeter instructions
..................................................................................................
32
The fifth chapter Recorder and center using the serial port
....................
35
5.1 The use of the recorder
..................................................................................................
35
5.2 A serial port center operations
..................................................................................
37
The sixth Chapter Application example
......................................................................
40
6.1 Simple signal measurement
..............................................................................................
40
6.2 The cursor measurement
..................................................................................................
41
6.3 To capture a single signal
............................................................................................
42
6.4 A serial port center print uclinux start information
........................................
44
6.5 Generate sine wave signal
..............................................................................................
45

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6.6 Multimeter to measure dc voltage
................................................................................
46
The seventh chapter System prompts and troubleshooting
...............................
47
7.1 Message system
...................................................................................................................
47
7.2 Fault handling
...................................................................................................................
47
The eighth chapter Service and support
.................................................................
49
8.1 Summary of the warranty
..................................................................................................
49
Appendix A technical specification
....................................................................................
49
Appendix B daily maintenance and cleaning
......................................................................
54

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The First Chapter Introductory guide
JHJDS30 series portable digital storage oscilloscope is small, lightweight portable instruments.
To provide customers with convenient and easy to operate, the front panel can perform basic
tests.
This chapter mainly elaborates how to perform the following tasks:
△ General inspection
△ The front panel and the user interface
△ Holding a storage oscilloscope connected input
△ Functional check
△ The probe compensation
1.1 General inspection
When you get a new JHJDS30 series with oscilloscope, it is strongly recommended that you follow
the steps below to check the oscilloscope.
Check whether there is damage caused by transportation:
If it is found that serious breakage or foam cushion packaging carton, please keep, until the
whole machine and accessories by electrical and mechanical tests.
Check the attachment:

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About providing detail of attachment, in front of this manual in the attachment. You can refer
to this check attachment for missing or damaged. If you find attachment missing or damaged,
please contact in charge of the business of dealers.
Check the machine:
If it is found that the appearance of instrument, the operation of the instrument or failed the
performance test, please contact in charge of the business of selling or dealer. If the
instrument damage caused by the transport, please pay attention to keep the packaging. Notify
the transportation department and in charge of the business of selling or dealers. We will
arrange for you repair or replacement.
1.2 The front panel and the user interface
When you get an oscilloscope, you need to be familiar with its front panel. This chapter will
detail oscillographic table layout and how to use the front panel keys. Please read this
chapter carefully before any action.
The front panel and key layout （ picture 1-1 ）：
The front panel of buttons in addition can be displayed on the interface menu allows you to
directly use some function. Shown on the interface menu provides all of the advanced features.

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Function description （ Figure 1-1 ） :
1. display 10. HORI ： Display the HORI menu
2. F1 ～ F5 ： Multi-function selection buttons 11. TRIG ： Display the TRIG menu
3. PRW: Power on/off button 12. MATH: Display the MATH menu
4. MENU ： The menu button 13. MEAS: Display the measurement menu
5. Adjust the trigger level 14. Adjust the vertical voltage notch
6. Set the time base and horizontal displacement waveform 15.Adjust the horizontal position
7. The cursor keys 16. CH1: Display the CH1 menu
8. CH2 ： According to channel 2 menu 17. AUTO: Automatically set
9. OK ： Identify key 18. RUN ： Run/stop

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Figure 1-1

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Figure
Figure
Figure
Figure 1-2
1-2
1-2
1-2 screens
screens
screens
screens

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Display interface, as shown in figure 1-2
Oscilloscope interface description:
1.According to the battery
2.According to state trigger
3.Display the current waveform in memory location
4.Show the level of time
5.Displays the wait time trigger signal
6.According to signal amplitude
7.Display, frequency signal cycle
8.According to duty ratio
9.Display trigger position
10.According to channel 1
11.According to channel 1 voltage notch
12.According to the relative horizontal displacement
13.waveform
14.The grid

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1.3 Holding a storage oscilloscope connected input
Instructions ：
1.The oscilloscope probe
2.Oscilloscope input
3.Oscilloscope digital channel input
4.The signal generator output
5.stents
6.Is clipped
7.Multimeter to test the pen
8.Multimeter input pin,
four round pins are respectively 10 a current,
current mA stall, grounding, voltage
Note: figure 1-3 for single channel
oscilloscope connected input, dual-channel
oscilloscope connected input is from left
figure 1-3