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SDS Series
Smart Digital Storage Oscilloscopes
User Manual
■ SDS6062(V)
■ SDS7072(V)
■ SDS7102(V)
■ SDS8102(V)
■ SDS8202(V)
■ SDS8302
■ SDS9302
Note: "V" for VGA interface (optional), SDS8302 and SDS9302
including VGA interface as def ault.
WWW.OWON.COM.HK
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Headquarter:
Branch:
May. 2014 e dition V1.6.7
Copy Right in this Manual © Lilliput Company. All rights Reserved.
The Lilliput's products are under the protection of the patent rights in America and other countries,
including ones which have already obtained the patent rights and those which are applying for. The
information in this manual will replace all that in the materials published originally.
The information in this manual was correct at the time of printing. However, OWON will continue to
improve products and reserves the rights to changes specification at any time without notice.
OWON is the registered trademark of the Lilliput Company.
optoelectronics, 19 Heming Road, Lantian industrial zone, Zhangzhou, Fujian, China
Tel:+86-596-2130430 Fax:+86-596-2109272
Fujian Lilliput Optoelectronics Technology Co.,Ltd.: The mansion of
Web:
www.owon.com.hk Mail: Business Consulting: [email protected]
Sale service: [email protected]
Park, ZhenZhuWan,
Tel:+86-592-2575666 Fax:+86-592-2575669
Xiamen Lilliput Technology Co.,Ltd.: the 5th floor, B Area, Chuangxin Mansion, Software
Huandao RD, Xiamen, Fujian, China
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General W arranty
Lilliput warrants that the product will be free from defects in materials and workmanship
for a period of 3 years from the date of purchase of the product by the original purchaser
from the Lilliput Company. And the warranty period of accessories such as probe, battery
is 12 month. This warranty only applies to the original purchaser and is no t transferable to
the third party. If the product proves defective during the warranty period, Lilliput either
will repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product. Parts, modules and replacement
products used by Lilliput for warranty work may be new or reconditioned to like new
performance. All replaced parts, modules and products become the property of Lilliput.
In order to obtain service under this warranty, Customer must notify Lilliput of the defect
before the expiration of the warranty period. Customer shall be responsible for packaging
and shipping the defective product to the service center designated by Lilliput, and with a
copy of customer proof of purchase.
This warranty shall not apply to any defect, failure or damage caused by improper use or
improper or inadequate maintenance and care. Lilliput shall not be obligated to furnish
service under this warranty a) to repair damage resulting from attempts by personnel other
than Lilliput representatives to install, repair or service the product; b) to repair damage
resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-Lilliput supplies; or d) to service a
product that has been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing the product.
Please contact the neare st Lilliput's Sales and Service Offic es for services or a complete
copy of the warranty statement.
For better after-sales service, please visit www.owon.com.hk and register the purchased
product online.
Excepting the after-sales services provided in this summary or the applicable warranty
statements, Lilliput will not offer any guarantee for maintenance definitely declared or hinted,
including but not limited to the implied guarantee for marketability and special-purpose
acceptability. Lilliput should not take any responsibilities for any indirect, special or consequent
damages.
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Table of Contents
1. General Safety Requirements .......................................................................................... 1
2. Safety Terms and Symbols ............................................................................................... 2
3. General Characteristics ................................................................................................... 4
4. Junior User Guidebook ................................................................................................... 5
Introduction to the Structure of the Oscillo scope ..................................................................... 6
Front Panel ............................................................................................................................................... 6
Left Side Panel ......................................................................................................................................... 7
Right Side Panel ....................................................................................................................................... 7
Rear Panel ................................................................................................................................................ 8
Control (key and knob) Area .................................................................................................................... 9
User Interface Introduction ...................................................................................................... 10
How to Implement the General Inspection ............................................................................. 12
How to Implement the Function Inspection ............................................................................ 12
How to Implement the Probe Compensation .......................................................................... 13
How to Set the Probe Attenuation Coefficient ........................................................................ 14
How to Use the Probe Safely..................................................................................................... 15
How to Implement Self-calibration .......................................................................................... 15
Introduction to the Vertical System ......................................................................................... 16
Introduction to the Horizontal System .................................................................................... 17
Introduction to the Trigger System ......................................................................................... 18
5. Advanced User Guidebook ............................................................................................ 19
How to Set the Vertical System ................................................................................................ 20
Use Mathematical Manipulation Function ............................................................................................. 26
Using FFT function ................................................................................................................................ 28
Use VERTICAL POSITION and VOLTS/DIV Knobs .......................................................... 30
How to Set the Horizontal System ........................................................................................... 31
How to Set the Trigger System ................................................................................................. 34
Single trigger .......................................................................................................................................... 34
Alternate trigger ..................................................................................................................................... 38
How to Operate the Function Menu ........................................................................................ 42
How to Implement Sampling Setup ....................................................................................................... 42
How to Set the Display S ystem .............................................................................................................. 44
How to Save and Recall a Waveform ..................................................................................................... 48
How to Cut and Recall a waveform ....................................................................................................... 55
How to Record/Playback Waveforms .................................................................................................... 58
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How to Implement the Auxiliary System Function Setting .................................................................... 63
How to Measure Automatically.............................................................................................................. 70
How to Measure with Cursors ................................................................................................................ 73
How to Use Autoscale ............................................................................................................................ 78
How to Use Built-in Help ....................................................................................................................... 80
How to Use E xecutive Buttons............................................................................................................... 80
6. Communication with PC ............................................................................................... 83
Using USB Port .......................................................................................................................... 83
Using LAN Port ......................................................................................................................... 84
Connect directly ..................................................................................................................................... 84
Connect through a router ........................................................................................................................ 85
Using COM Port ........................................................................................................................ 87
7. Demonstration ............................................................................................................... 88
Example 1: Measurement a Simple Signal .............................................................................. 88
Example 2: Gain of a Amplifier in a Metering Circuit .......................................................... 89
Example 3: Capturing a Single Signal ..................................................................................... 90
Example 4: Analyze the Details of a Signal ............................................................................. 92
Example 5: Application of X-Y Function ................................................................................ 93
Example 6: Video Signal Trigger ............................................................................................. 95
8. Tr oubleshooting ............................................................................................................. 96
9. Technical Specifications ................................................................................................ 97
General Technical Specifications ........................................................................................... 102
10. Appendix .................................................................................................................... 103
Appendix A: Enclosure ........................................................................................................... 103
Appendix B: General Care and Cleaning ............................................................................. 103
Appendix C: Battery Using Guide ......................................................................................... 104
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1.General Safety Requirements
1. General Safety Requirements
Before any operations, please read the following safety precautions to avoid any
possible bodily injury and prevent this product or any other products connected
from damage. In order to avoid any contingent danger, this product is only used
within the range specified.
Only the qualified technicians can implement the maintenance.
To avoid Fire or Personal Injury:
Connect the probe correctly. The grounding end of the probe corresponds to the
grounding phase. Please don't connect the grounding end to the positive phase.
Use Proper Power Cord. Use only the power cord supplied with the product and
certified to use in your country.
Connect or Disconnect Correctly. When the probe or test lead is connected to a
voltage source, please do not connect and disconnect the probe or test lead at random.
Product Grounded. This instrument is grounded through the power cord grounding
conductor. To avoid electric shock, the grounding conductor must be grounded. The
product must be grounded properly before any connection with its input or output
terminal.
When powered by AC power, it is not allowed to measure AC power source
directly, because the testing ground and power cord ground conductor are
connected together, otherwise, it will cause short circuit.
When powered by battery, the product must ground connection. To avoid electric
shock, there must be a ground wire connect between ground and the ground port
(on the back of product panel).
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and
markers of this product. Refer to the user's manual for more information about ratings
before connecting to the instrument.
Do not operate without covers. Do not operate the instrument with covers or panels
removed.
Use Proper Fuse. Use only the specified type and rating fuse for this instrument.
Avoid exposed circuit. Do not touch exposed junctions and components when the
instrument is powered.
Do not operate if in any doubt. If you suspect damage occurs to the instrument, have
it inspected by qualified service personnel before further operations.
Use your Oscilloscope in a well-ventilated area. Make sure the instrument installed
with proper ventilation, refer to the user manual for more details.
Do not operate in wet conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
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2.Safety T erms and Symbols
2. Safety Terms and Symbols
Safety Terms
Terms in this manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in
injury or loss of life.
Caution: Caution indicates the conditions or practices that could result in
damage to this product or other property.
Terms on the product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the product. The following symbol may appear on the product:
Hazardous Voltage
Protective Earth Terminal
Test Ground
To avoid body damage and prevent product and connected equipment damage, carefully
read the following safety information before using the test tool. This product can only be
used in the specified applications.
Refer to Manual
Chassis Ground
Warning:
The two channels of the oscilloscope are non-isolated electrically. The channels
should adopt common basis during measuring. To prevent s hort ci rcuits, the 2 probe
ground must not be connected to 2 different non-isolated DC level.
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2.Safety T erms and Symbols
Ground Clip
Signal Input
Oscilloscope
Electrical Outlet
Probe
Power Cord
Ground Clip
Signal Input
Oscilloscope
(Battery-power)
PC Electrical OutletProbe
USB/VGA/COM/
LAN Cable
Warning:
To avoid fire or electrical shock
connected
42V peak (30Vrms) or on circuits of more than
4800VA
not apply input voltages above the rating of the instrument
because the probe tip voltage will directly transmit to the
Warning:
The channels should adopt common basis during measuring. To prevent short
circuits, the 2 probe ground must not be connected to 2 different non-isolated DC
level.
The diagram of the oscilloscope ground wire connection:
The diagram of the ground wire connection when the battery-powered oscilloscope is
connected to the AC-powered PC through the ports:
It is not allowed to measure AC power when the oscillo scope is AC p o wered , or when
the battery-powered oscilloscope is connected to the AC-powered PC through the
ports.
is more than
, please take note of below items:
Only use accessory insulated voltage probes and test lead.
Check the accessories such as probe before use and replace it if
there are any damages.
Remove probes, test leads and other accessories immediately after
use.
Remove USB cable which connects oscilloscope and computer.
, when the oscilloscope input signal
Do
oscilloscope. Use with caution when the probe is set as 1:1.
Do not use exposed metal BNC or banana plug connectors.
Do not insert metal objects into connectors.
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3.General Characteristics
3. General Characteristics
Bandwidth: 60MHz — 300 MHz;
Sample rate(real time): 500MS/s — 3.2GS/s;
Dual channel, 10M points on each channel for the Record length;
Autoscale function;
7cm smart design body;
8 inch high definition TFT display (800 x 600 pixels);
Built-in FFT function;
Pass/Fail Function;
Waveform record and playback;
VGA interface (only for the model with "V" or the models including VGA
interface as default);
Various triggering function;
USB communication ports;
Super capacity lithium battery (Optional);
Built-in Chinese and English help system;
Multiple language support.
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4.Junior User Guidebook
4. Junior User Guidebook
This chapter deals with the following topics mainly:
Introduction to th e structure of the oscillo s co pe
Introduction to th e u ser interface
How to implement the general i nspection
How to implement the function inspection
How to make a pr obe compensati on
How to set the probe attenuati o n coeff i cie n t
How to use the probe safely
How to implement an auto-calibration
Introduction to th e ver tic al system
Introduction to th e ho riz on ta l sy stem
Introduction to th e tri gg er syste m
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Introduction to the Structure of the Oscilloscope
When you get a new-type oscilloscope, you should get acquainted with its front panel at
first and the SDS series digital storage oscilloscope is no exception. This chapter makes a
simple description of the operation and function of the front panel of the SDS series
oscilloscope, enabling you to be familiar with the use of the SDS series oscilloscope in the
shortest time.
Front Panel
The SDS series oscilloscope offers a simple front panel with distinct functions to users for
their completing some basic operations, in which the knobs and function pushbuttons are
included. The knobs have the functions similar to other oscilloscopes. The 5 buttons (F1 ~
F5) in the column on the right side of the display screen or in t he row under the display
screen (H1 ~ H5) are menu selection buttons, through which, you can set the different
options for the current menu. The other pushbuttons are function buttons, through which,
you can enter different function menus or obtain a specific function application directly.
Figure 4-1 Front panel
1. Power on/off
2. Display area
3. Power indication– light
Green light: Indicating DSO connects with AC Power, and the battery is in full (if
there is battery inside DSO).
Yellow light: Indicating DSO connect with AC Power and the battery is in charging
(if there is battery inside DSO)
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Light off: Only powered by battery without connecting AC Power
4. Control (key and knob) area
5. Probe Compensation: Measurement signal (5V/1KHz) output. (The signal parameters
could be adjusted in SDS7072(V), refer to "Signal" on P69)
6. EXT Trigger Input
7. Signal Input Channel
8. Menu off
Left Side Panel
Figure 4-2 Left side panel
1. Power switch: "―" represents power ON; "○" represents power OFF.
2. AC power input jack
Right Side Panel
Figure 4-3 Right side panel
1. USB Host port: It is us ed to transfer data wh en external USB equipmen t connects to
the oscilloscope re garded as "host device". For example: upgrading software by US B
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flash disk needs to use this port.
2. USB Device port: It is u sed to transf er dat a when ex ternal USB eq uipm ent con nects t o
the oscilloscope re garded as "slave device". For example: to use this port when connect
PC to the oscilloscope by USB.
3. COM / VGA port (Optional): To connect the oscilloscope with external equipment as
serial port, or to connect the oscilloscope with a monitor or a projector as VGA output
(for the model with "V")
.
4. LAN port: the network port which can be used to connect with PC.
Rear Panel
Figure 4-4 Rear Panel
1. The port of trigger signal output & Pass/Fail output
2. Handle
3. Air vents
4. Foot stool (which can adjust the tilt angle of the oscilloscope)
5. Ground connection
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Control (key and knob) Area
Figure 4-5 Keys Overview
1. Menu option setting: H1~H5
2. Menu option setting: F1~F5
3. Menu off：turn off the menu
4. M knob(Multipurpose knob): when a ○ME A symbol appears in the menu, it indicates you
can turn the M knob to s elect the menu or set the value. You can press it to close the
menu on the left.
5. Function key area: Total 12 keys
6. Vertical control area with 3 keys and 4 knobs.
"CH1 MENU" and "CH2 MENU" correspond to setting menu in CH1 and CH2,
"Math" ke y refer to math menu, the math menu consists of six kinds of operations,
including CH1-CH2, CH2-CH1, CH1+CH2, CH1*CH2, CH1/CH2 and FFT. Two
"VERTICAL POSITION" knob control the vertical position of CH1/CH2, and two
"VOLTS/DIV" knob control voltage scale of CH1, CH2.
7. Horizontal control area with 1 key and 2 knobs.
"HORIZONTAL POSITION" knob control trigger position, "SEC/DIV" control time
base, "HORIZ MENU" key refer to horizontal system setting menu.
8. Trigger control area with 3 keys and 1 knob.
"TRIG LEVEL" knob is to adjust trigger voltage. Other 3 keys refer to trigger system
setting.
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User Interface Introduction
Figure 4-6 Illustrative Drawing of Display Interfaces
1. Waveform Display Area.
2. The state of trigger, including:
Auto: Automatic mode and acquire waveform without triggering.
Trig: Trigger detected and acquire waveform.
Ready: Pre-triggered data captured and ready for a trigger.
Scan: Capture and display the waveform continuously.
Stop: Data acquisition stopped.
3. The purple T pointer indicates the horizontal position for the trigger.
4. The pointer indicates the trigger position in the internal memory.
5. The two yellow dotted lines indicate the size of the viewing expanded window.
6. It shows present triggering value and displays the site of present window in
internal memory.
7. It shows setting time (see "Config" on P63 ).
8. It indicates that there is a U disk connecting with the oscilloscope.
9. Indicating battery power status (see "Display" on P64 ).
10. The red pointer shows the trigger level position for CH1.
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11. The waveform of CH1.
12. The positions of two purple dotted line cursors measurements.
13. The yellow pointer shows the trigger level position for CH2.
14. The waveform of CH2.
15. The frequency of the trigger signal of CH1.
16. The frequency of the trigger signal of CH2.
17. It indicates the current function menu.
18/19. Current trigger type:
Rising edge triggering
Falling edge triggering
Video line synchronous triggering
Video field synchronous triggering
The reading shows the trigger level value of the corresponding channel.
20. The reading shows the window time base value.
21. The reading shows the setting of main time base.
22. The readings show current sample rate and the record length.
23. It indicates the me asured t ype and v alue of the correspondin g channel. "F" means
frequency, "T" means cycle, "V" means the average value, "Vp" the peak-peak
value, "Vk" the root-mean-square value, "Ma" the maximum amplitude value,
"Mi" the minimum amplitude value, "Vt" the Volt age v alu e o f t he waveform's flat
top value, "Vb" the Volta ge value of t he wavefor m's flat bas e, "Va" the amplitude
value, "Os" the overshoot value, "Ps" the Preshoot value, "RT" the rise time value,
"FT" the fall time value, "PW" th e +width value, "NW" the -Width value, "+D"
the +Duty value, "-D" the -Dut y value, "PD" the Del ay A B value and "ND"
the Delay A B value.
24. The readings indicate the corresponding Voltage Division and the Zero Point
positions of the channels.
The icon shows the coupling mode of the channel.
"—" indicates direct current coupling
"～" indicates AC coupling
" " indicates GND coupling
25. It is cursor measure window, showing the absolute values and the readings of the
two cursors.
26. The yellow pointer shows the grounding datum point (zero point position) of the
waveform of the CH2 channel. If the pointer is not displayed, it shows that this
channel is not opened.
27. The red pointer indicates the grounding datum point (zero point position) of the
waveform of the CH1 channel. If the pointer is not displayed, it shows that the
channel is not opened.
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How to Implement the General Inspection
After you get a new SDS series oscilloscope, it is recommended that you should make
a check on the instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied access ories have been already described in the "Appendix A: Enclosure"
of this Manual. You can check wh ether ther e is any loss of accesso ries wi th referenc e
to this description. If it is found that there is any accessory lost or dam a ged , pl ease get
in touch with the distributor of Lilliput responsible for this service or the Lilliput's
local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the
instrument can not work normally, or fails in the performance test, please get in touch
with the Lilliput's distributor responsible for this business or the Lilliput's local offices.
If there is damage to the instrument caused by the transportation, please keep the
package. With the transportation department or the Lilliput's distributor responsible
for this business informed about it, a repairing or replacement of the instrument will
be arranged by the Lilliput.
How to Implement the Function Inspection
Make a fast function check to verify the normal operation of the instrument, according
to the following steps:
1. Connect the power cord to a power source. Turn on the Power Switch
Button ― ○ on the left side (make sure the "―" side is pressed down). Then,
push down the button of the " " signal on the top.
The instrument carries out all self-check items and shows the Boot Logo. Press the
"Utility" button, then, press H1 button to get access to the "Function" menu. Turn the
M knob to select Adjust and press H3 button to select "Default". The default
attenuation coefficient set value of the probe in the menu is 10X.
2. Set the Switch in the Oscilloscope Probe as 10X and Connect the Oscilloscope
with CH1 Channel.
Align the slot in the probe with the plug in the CH1 connector BNC, and then tighten
the probe with rotating it to the right side.
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Connect the probe tip and the ground clamp to the connector of the probe
compensator.
3. Press the "Autoset" Button.
The square wave of 1 KHz frequency and 5V peak-peak value will be displayed in
several seconds (see Figure 4-7).
Figure 4-7 Auto set
Check CH2 by repeating Step 2 and Step 3.
How to Implement the Probe Compensation
When connect the probe with any input channel for the first time, make this
adjustment to match the probe with the input channel. The probe which is not
compensated or present s a compensation deviation will result in the measuring error
or mistake. For adjusting the probe compensation, please carry out the following
steps:
1. Set the attenuation coefficient of the probe in the menu as 10X and that of the
switch in the probe as 10X (see "How to Set the Probe Attenuation Coefficient"
on P14), and connect the probe with the CH1 channel. If a probe hook tip is used,
ensure that it keeps in close touch with the probe. Connect the probe tip with the
signal connecto r of the prob e compensator and connect the reference wire clamp
with the ground wire connector of the probe connector, and then press the button
"Autoset".
2. Check the displayed waveforms and regulate the probe till a correct
compensation is achieved (see Figure 4-8 and Figure 4-9).
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Caution:
in the
Overcompensated Compensated correctly Under compensated
Figure 4-8 Displayed Waveforms of the Prob e Compe ns ati o n
3. Repeat the steps mentioned if needed.
Figure 4-9 Adjust Probe
How to Set the Probe Attenuation Coefficient
The probe has sev eral att enuation coefficients, which will influence the vertical scale
factor of the oscilloscope.
To change or check the probe attenuation coefficient in the menu of oscilloscope:
(1) Press the function menu button of the used channels (CH1 MENU or CH2
MENU).
(2) Press H3 button to display the Probe menu; select the proper value corresponding
to the probe.
This setting will be valid all the time before it is changed again.
The default attenuation coefficient of the probe on the instrument is preset to
10X.
Make sure that the set value of the attenuation switch in the probe is the
same as the menu selection of the probe attenuation coefficient
oscilloscope.
The set values of the probe switch are 1X and 10X (see Figure 4-10).
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Caution:
connect the probe to the
Figure 4-10 Attenuation Switch
When the attenuation switch is set to 1X, the probe will limit the bandwidth
of the oscilloscope in 5MHz. To use the full bandwidth of the oscilloscope,
the switch must be set to 10X.
How to Use the Probe Safely
The safety guard ring around the probe body protects your finger against any electric
shock, shown as Figure 4-11.
Figure 4-11 Finger Guard
Warning:
To avoid electric shock, always keep your finger behind the safety guard
ring of the probe during the operation.
To protect you from suffering from the electric shock, do not touch any
metal part of the probe tip when it is connected to the power supply.
Before making any measurements, always
instrument and connect the ground terminal to the earth.
How to Implement Self-calibration
The self-calibration application can make the oscilloscope reach the optimum
condition rapidly to obtain the most accurate measurement value. You can carr y out
this application program at any time. This program must be executed whenever the
change of ambient temperature is 5℃ or over.
Before performing a self-calibration, disconnect all probes or wires from the input
connector. Press the "Utility" button, then, press H1 button to call out the Function
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menu; turn the M knob to choose Adjust. Press H2 button to choose the option "Self
Cal"; run the program after everything is ready.
Introduction to the Vertical System
As shown in Figure 4-12, there are a few of buttons and knobs in VERTICAL
CONTROLS. The following practices will gradually direct you to be familiar with
the using of the vertical setting.
Figure 4-12 Vertical Control Zone
1. Use the button "VERTICAL POSITION" knob to show the signal in the center of
the waveform window. The "VERTICAL POSITION" knob functions the regulating
of the vertical display position of the signal. Thus, when the "VERTICAL
POSITION" knob is rotated, the pointer of the earth datum point of the channel is
directed to move up and down following the waveform.
Measuring Skill
If the channel is under the DC coupling mode, you can rapidly measure the DC
component of the signal through the observation of the difference between the wave
form and the signal ground.
If the channel is under the AC mode, the DC component would be filtered out. This
mode helps you display the AC component of the signal with a higher sensitivity.
Vertical offset back to 0 shortcut key
Turn the VERTICAL POSITION knob to change the vertical display position of
channel and press the position knob to set the vertical display position back to 0 as a
shortcut key, this is especially helpful when the trace position is far out of the screen
and want it to get back to the screen center immediately.
2. Change the Vertical Setting and Observe the Consequent State Information Change.
With the information displayed in the status bar at the bottom of the waveform
window, you can determine any changes in the channel vertical scale factor.
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Turn the vertical "VOLTS/DIV" knob and change the "Vertical Scale Factor
(Voltage Division)", it can be found that the scale factor of the channel
corresponding to the status bar has been changed accordingly.
Press buttons of "CH1 MENU", "CH2 MENU" and "Math", the operation menu,
symbols, waveforms and scale factor status information of the corresponding
channel will be displayed in the screen.
Introduction to the Horizontal System
Shown as Figure 4-13, there are a button and two knobs in the "HORIZONTAL
CONTROLS". The following practices will gradually direct you to be familiar with
the setting of horizontal time base.
Figure 4-13 Horiz ontal Cont rol Zon e
1. Use the horizontal "SEC/DIV" knob to change the horizontal time base setting
and observe the consequent status information change. Rotate the horizontal
"SEC/DIV" knob to change the horizontal time base, and it can be found that the
"Horizontal Time Base" display in the status bar changes accordingly.
2. Use the "HORIZONTAL POSITION" knob to adjust the horizontal position of
the signal in the waveform window. The "HORIZONTAL POSITION" knob i s
used to control the triggering displacement of the signal or for other special
applications. If it is applied to triggering the displacement, it can be observed that
the waveform moves horizontally with the knob when you rotate the
"HORIZONTAL POSITION" knob.
Triggering displacement back to 0 shortcut key
Turn the HORIZONTAL POSITION knob to change the horizontal position of
channel and press the HORIZONTAL POSITION knob to set the triggering
displacement
3. With the "HORIZ MENU" button, you can do the Window Setting and the
Window Expansion.
back to 0 as a shortcut key.
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Introduction to the Trigger System
As shown in Figure 4-14, there are one knob and three buttons make up "TRIGGER
CONTROLS". The following practices will direct you to be familiar with the setting
of the trigger system gradually.
Figure 4-14 Trigger Control Zone
1. Press the "Trigger Menu" button and call out the trigger menu. With the
operations of the menu selection buttons, the trigger setting can be changed.
2. Use the "TRIG LEVEL" knob to change the trigger level setting.
By rotating the "TRIG LEVEL" knob, the trigger indicator in the screen will
move up and down. With the movement of the trigger indicator, it can be
observed that the trigger level value displayed in the screen changes accordingly.
PS: Turning the TRIG LEVEL knob can change trigger level value and it is also
the hotkey to set trigger level back to 0.
3. Press the button "50%" to set the trigger level as the vertical mid point values of
the amplitude of the trigger signal.
4. Press the "Force" button to force a trigger signal, which is mainly applied to the
"Normal" and "Single" trigger modes.
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5. Advanced User Guidebook
Up till now, you have already been familiar with the basic operations of the function areas,
buttons and knobs in the front panel of the oscilloscope. Based the introduction of the
previous Chapter, the user should have an initial knowledge of the determination of the
change of the oscilloscope setting through observing the status bar. If you have not been
familiar with the above-mentioned operations and methods yet, we advise you to read the
section of Chapter 4 "Junior User Guidebook".
This chapter will deal with the following topics mainly:
How to Set the Vertical System
How to Set the Horizontal System
How to Set the Trigger System
How to Implement the Sampling Setup
How to Set the Display System
How to Save and Recall Waveform
How to Record/Playback Waveforms
How to Implement the Auxiliary System Function Setting
How to Implement the Automatic Measurement
How to Implement the Cursor Measurement
How to Use Autoscale function
How to Use Executive Buttons
It is recommended that you read this chapter carefully to get acquainted the various
measurement functions and other operation methods of the SDS series oscilloscope.
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How to Set the Vertical System
The VERTICAL CONTROLS includes three menu buttons such as CH1 MENU,
CH2 MENU and Math, and four knobs such as VERTICAL POSITION,
VOLTS/DIV for each channel.
Setting of CH1 and CH2
Each channel has an independent vertical menu and each item is set respectively
based on the channel.
To turn waveform s on or off (ch ann e l, math)
Pressing the CH1 MENU, CH2 MENU or Math buttons have the following effect:
• If the waveform is off, the waveform is turned on and its menu is displayed.
• If the waveform is on and its menu is not displayed, its menu will be displayed.
• If the waveform is on and its menu is displayed, the waveform is turned off and its
menu goes away.
CH1 menu
CH2 menu
Couple setting Probe setting Limit setting
Figure 5-1 Channel Setting Menu (SDS6062(V), SDS7072(V) do not have "Limit" menu)
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Function
Menu
Setting
Description
DC
GROUND
Pass both AC and DC components of the input signal.
Disconnect the input signal.
ON
OFF
Display inverted waveform.
Display original waveform.
X1
X1000
Turn the M knob to set the Amps/Volts ratio. The
Volts/Amp ratio is automatically calculated.
Limit
full band
Get full bandwidth.
Limit the channel bandwidth to 20MHz to reduce
The description of the Channel Menu is shown as the following list:
Coupling
Inverted
Probe
(SDS6062(V),
SDS7072(V)
does not have
this function)
AC
Attenu
MeasCurr
X10
X100
YES
NO
A/V (mA/V)
V/A (mV/A)
20M
Block the DC component of the input signal.
Match this to the probe attenuation factor to have an
accurate reading of vertical scale.
If you are measuring current by probing the voltage
drop across a resistor, choose YES.
range is 100mA/V ~ 1KA/V.
Amps/Volts ratio = 1/Resistor value
display noise.
1. To set channel coupling
Taking the Channel 1 for example, the measu red signal is a square wave signal
containing the direct current bias. The operation steps are shown as below:
(1) Press the CH1 MENU button to show CH1 SETUP menu.
(2) Press the H1 button, the Coupling menu will display at the screen.
(3) Press the F1 button to select the Coupling item as "DC". Both DC and AC
components of the signal are passed. The waveforms are shown as Figure
5-2.
(4) Then, press F2 button to select the Coupling item as "AC". The direct current
component of the signal is blocked. The waveforms are shown as Figure 5-3.
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Figure 5-2 DC Coupling Oscillogram
Figure 5-3 AC Coupling Oscillogram
2. To adjust the probe attenuation
For correct measurements, the attenuation coefficient settings in the operating
menu of the Channel should always match what is on the probe (see "How to Set
the Probe Attenuation Coefficient" on P14). If the attenuation coeffi cient of the
probe is 1:1, the menu setting of the input channel should be set to X1.
Take the Channel 1 as an example, t he at t enu at i on co ef ficient o f the probe is 10:1,
the operation steps are shown as follows:
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Attenuation Coefficient of the Probe
Corresponding Menu Setting
1:1
X1
10:1
X10
100:1
X100
1000:1
X1000
(1) Press the CH1 MENU button to show CH1 SETUP menu.
(2) Press the H3 menu selection, the Probe menu will display at the right of the
screen. Press the F1 button to select Attenu. In the menu at the left of the
screen, turn the M knob to select X10 for the probe.
The Figure 5-4 illustrates the setting and the vertical scale factor when the probe
of the attenuation coefficient of 10:1 is used.
Figure 5-4 Regulation of the Attenuation Ratio of the Probe
A list of the probe attenuation coefficient and the corresponding menu settings:
3. To measure current by probing the voltage drop across a resistor
Take the Channel 1 as an example, if you are measuring current by probing the
voltage drop across a 1Ω resistor, the operation steps are shown as follows:
(1) Press the CH1 MENU button to show CH1 SETUP menu.
(2) Press the H3 menu selection, the Probe menu will display at the right of the
screen. Press the F2 button to set MeasCurr to YES, the A/V radio menu
will appear below. Press the F3 button; turn the M knob to set the
Amps/Volts ratio. Amps/Volts ratio = 1/Resistor value. Here the A/V radio
should be set to 1.
The Figure 5-5 illustrates the setting and the vertical scale factor when measuring
current by probing the voltage drop across a 1Ω resistor.
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Figure 5-5 Measure Current
4. To invert a waveform
Waveform inverted: the displayed signal is turned 180 degrees against the phase
of the earth potential.
Taking the Channel 1 for example, the operation steps are shown as follows:
(1) Press the CH1 MENU button to show CH1 SETUP menu.
(2) Press the H2 menu selection button and select ON for Inverted item. The
waveform is inverted as it is shown in Figure 5-7.
(3) Press the H2 menu selection button again and select OFF for Inverted item.
The waveform goes back to its original one as it is shown in Figure 5-6.
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Figure 5-6 Original Waveform
Figure 5-7 Inverted Waveform
5. To set bandwidth limit (SDS6062(V), SDS7072(V) does not have this function)
When high frequency components of a waveform are not important to its analysis,
the bandwidth limit control can be used to reject frequencies above 20 MHz.
Taking the Channel 1 for example, the operation steps are shown as below:
(1) Press the CH1 MENU button to show CH1 SETUP menu.
(2) Press the H4 button and the Limit menu will display.
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Function Menu
Setting
Description
CH1
CH2
CH1
Turn the M knob to adjust the vertical
position of M waveform
Turn the M knob to adjust the
division of M waveform
(3) Press the F1 button to select the Band Limit as full band. The high
frequency of the signal will be allowed to pass.
(4) Press the F2 button to select the Band Limit as 20M. The bandwidth is
limited to 20MHz. The frequencies above 20MHz will be rejected.
Use Mathematical Manipulation Function
The Mathematical Manipulation function is used to show the results of the addition,
multiplication, division and subtraction operations between Channel 1 and Channel 2,
and the FFT operation of Channel 1 or Channel 2.
Figure 5-8 Wave math menu
The corresponding FCL (Functional Capabilities List) of the Waveform Calculation:
Factor1
Select the signal source of the factor1
Sign + - * / Select the sign of mathematical manipulation
Dual Wfm
Math
Factor 2
CH2
Select the signal source of the factor2
VERT POS
voltage
FFT
VOLTS/DIV
Source
CH1
CH2
Select CH1 as FFT source.
Select CH2 as FFT source.
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Window
dB
Select dB for Format.
1
Set multiple ×1.
Format
5.Advanced User Guidebook
Rectangle
Blackman
Select window for FFT.
Hanning
Hamming
Vrms
Select Vrms for Format.
×
×2
Set multiple ×2.
Zoom
×5
×10
Set multiple ×5.
Set multiple ×10.
Taking the additive operation between Channel 1 and Channels 2 for example, the
operation steps are as follows:
1. Press the Math button to bring up the Wfm Math menu.
2. Press the H1 button and call out the Dual Wfm Math menu. The menu will
display at the left of the screen.
3. Press the F1 menu selection button and choose CH1 for Factor1.
4. Press the F2 menu selection button and choose +.
5. Press the F3 menu selection button and choose CH2 for Factor2. The green
calculated waveform M is displayed in the screen.
6. Press the F4 menu selection button and choose VERT POS, turn the M knob to
adjust the vertical position of M waveform.
7. Press the F5 menu selection button and choose VOLTS/DIV, turn the M knob to
adjust the voltage division of M waveform.
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Figure 5-9 Waveform resulted from CH1 +CH2
Using FFT function
The FFT (fast Fourier transform) math function mathematically converts a time-domain
waveform into its frequency components. It is very useful for analyzing the input signal on
Oscilloscope. You can match these frequencies with known system frequencies, such as
system clocks, oscillators, or power supplies.
FFT function in this oscilloscope transforms 2048 data points of the time-domain signal
into its frequency components mathematically and the final frequency contains 1024
points ranging from 0Hz to Nyquist frequency.
Taking the FFT operation for example, the operation steps are as follows:
1. Press the Math button and call out the Math menu.
2. Press the H2 button and call out the FFT menu.
3. Press the F1 button to choose CH1 as the source.
4. Press F2 button, the windows item will display at the left of the screen, turn the M
knob to select Window, including Rectangle, Hamming, Hanning and Blackman.
5. Press F3 button to choose the Format, including dB, Vrms.
6. Press F4 button, the zoom window will display at the left of the screen, turn the M
knob to zoom in or out the wave of the multiple including ×1, ×2, ×5, ×10.
To select the FFT window
■ There are four FFT windows. Each one has trade-offs betwe en frequency resolution and
magnitude accuracy. What you want to measure and your source signal characteristics
help you to determine which window to use. Use the following guidelines to select the
best window.
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nonrepetitive signals and measuring frequency
It has slightly better
or bursts where the signal levels
before and after the event are significantly
Transients or bursts where the signal levels
before and after the event are significantly
Type Characteristics Window
Best solution for frequency, worst for magnitude.
Best type for measuri ng the frequency spect rum of
components near DC.
Recommend to use for:
Rectangle
Hamming
Transients or bursts, th e si gnal lev el be fore and
after the event are nearly equal.
Equal-amplitude sine waves with frequencies
those are very close.
Broadband random noise with a relatively slow
varying spectrum.
Better solution for magnitude than Rectangle, and
good for frequency as well.
frequency resolution than Hanning.
Recommend to use for:
Sine, periodic and narrow band random noise.
Transients
different.
Good for magnitude, but poorer frequency
resolution than Hamming.
Recommend to use for:
Hanning
Sine, periodic and narrow band random noise.
different.
Best solution for magnitude, worst for frequency.
Recommend to use for:
Blackman
Single frequency waveforms, to find higher
order harmonics.
Figure 5-10 is a examples for m easuring sine wave with a frequenc y of 1kHz under the
selection of four different windows for FFT:
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Figure 5-10 Rectangl e window
Notes for using FFT
Use Zoom function to magnify the FFT waveform if necessary.
Use the default dB scale for details of multiple frequencies, even if they have very
different amplitudes. Use the Vrms scale to compare frequencies.
DC com ponent or offset can cause i ncorrect magnitude val ues of FFT waveform. To
minimize the DC component, choose AC Coupling on the source signal.
To reduce random noise and aliased components in repetitive or single-shot events, set
the oscilloscope acquisition mode to average.
What is Nyquist freque nc y?
The Nyquist frequ ency is the highes t frequency that any real-time digitizing oscilloscope
can acquire without aliasing. This frequency is half of the sample rate. Frequencies above
the Nyquist frequency will be under sampled, which causes aliasing. So pay more
attention to the relation between the frequency being sampled and measured.
Note：
In FFT mode, the following settings are prohibited:
1) Window set;
2) XY Format in Display SET;
3) Measure.
Use VERTICAL POSITION and VOLTS/DIV Knobs
1. The VERTIVAL POSITION knob is used to adjust the vertical positions of the
waveforms, including the captured waveforms and calculated waveforms.
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The analytic resolution of this control knob changes with the vertical division.
2. The VOLTS/DIV knob is used to regulate the vertical resolution of the wave
forms, including the captured waveforms and calculated waveforms. The
sensitivity of the vertical division steps as 1-2-5. Turning clockwise to increase
vertical sensitivity and anti-clockwise to decrease.
3. When the vertical position of the channel waveform is adjusted, the changed
value is displayed at the left bottom corner of the screen (see Figure 5-11).
Figure 5-11 Information about Vertical Position
How to Set the Horizontal System
The HORIZONTAL CONTROLS includes the HORIZ MENU button and such
knobs as HORIZONTAL POSITION and SEC/DIV.
1. HORIZONTAL POSITION knob: this knob is used to adjust the horizontal
positions of all channels (include those obtained from the mathematical
manipulation), the analytic resolution of which changes with the time base.
2. SEC/DIV knob: it is used to set the horizontal scale factor for setting the main
time base or the window.
3. HORIZ MENU button: with this button pushed down, the screen shows the
operating menu (see Figure 5-12).
Figure 5-12 Time Base Mode Menu
The description of the Horizontal Menu is as follows:
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Function Menu
Description
The setting of the horizontal main time base is
used to display the waveform.
A window area is defined by two cursors. This
function is not available at FFT mode.
The defined window area for display is
expanded to the full screen.
Main (Main Time Base)
Set (Set Window)
Zoom (Zoom Window)
Main Tim e Base
Press the H1 menu selection button and choose Main. In this case, the
HORIZONTAL POSITION and SEC/DIV knobs are used to adjust the main
window. The display in the screen is shown as Figure 5-13.
Figure 5-13 Main Time Base
Set Window
Press the H2 menu selection button and choose Set. The screen will show a window
area defined by two cursors. Use the HORIZONTAL POSITION and SEC/DIV
knobs to adjust the horizontal position and size of this window area. In FFT mode, Set
menu is invalid. See Figure 5-14.
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5.Advanced User Guidebook
Figure 5-14 Window Setting
Press the H3 menu selection button and choose Zoom. As a resu lt, the window area
defined by two cursors will be expanded to the full screen size (see Figure 5-15).
Figure 5-15 Zoom Window
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How to Set the Trigger System
Trigger determines when DS O st art s t o acq ui re da t a and display waveform. Once
trigger is set correctly, it can convert the unstable display to meaningful
waveform.
When DSO starts t o acquire data, it will collect enough data to draw waveform
on left of trigger point. DSO continues to acquire data while waiting for trigger
condition to occur. Once it detects a trigger it will acquire enough data
continuously to draw the waveform on right of trigger point.
Trigger control area consists of 1 knob and 3 menu keys.
TRIG LEVEL: The knob that set the trigger level; press the knob and the level
will be cleaned to Zero.
50%: The instant execute button setting the trigger level to the vertical midpoint
between the peaks of the trigger signal.
Force: Force to create a trigger signal and the function is mainly used in
"Normal" and "Single" mode.
Trigger Menu: The button that activates the trigger control menu.
Trigger Control
The oscilloscope provides two trigger types: single trigger and alternate trigger.
Single trigger: Us e a trigger level to capture stable waveforms in two channels
simultaneously.
Alternate trigger: Trigger on non-synchronized signals.
The Single Tri gger and Alternate Trigg er menus are described respectively as
follows:
Single trigger
Single trigger has four modes: edge trigger, video trigger, slope trigger and pulse
trigger.
Edge Trigger: It occurs when the trigger input passes through a specified voltage
level with the specified slope.
Video Trigger: Tri gger on fields or lines for standard video signal.
Slope Trigger: The oscilloscope begins to trigger according to the signal rising or
falling speed.
Pulse Trigger: Find pulses with certain widths.
The four trigger modes in Single Trigger are described respectively as follows:
1. Edge Trigger
An edge trigger occurs on trigger threshold value of input signal. Select Edge trigger
mode to trigger on rising edge or falling edge.
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Menu
Settings
Instruction
Single Mode
Edge
Set vertical channel trigger type as edge trigger.
CH1
AC Line
Channel 1 as trigger signal.
AC power line as trigger signal.
AC
Block the direct current component.
component pass.
Trigger on rising ed ge
Trigger on falling edge
Auto
Reset
Acquire waveform even no trigger occurs
Set Holdoff time as default value (100ns).
The Edge Trigger Menu is shown as Figure 5-16.
Figure 5-16 Edge trig ger menu
Edge menu list:
Source
Coupling
Slope
Mode
Holdoff
CH2
EXT
EXT/5
DC
HF
LF
Normal
Single
Holdoff
Channel 2 as trigger signal.
External trigger as trigger signal
1/5 of the external trigger signal as trigger signal.
Allow all component pass.
Block the high-frequency signal, only low-frequency
component pass.
Block the low-frequency signal, only high-frequency
Acquire waveform when trigger occurs
When trigger occurs, acquire one waveform then stop
100ns~10s, turn the M knob to set time interval before
another trigger occur.
2. Video Trigger
Choose video trigger to trigger on fields or lines of NTSC, PAL or SECAM standard
video signals.
Trig menu refer to Figure 5-17.
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Video menu list:
MENU
SETTING
INSTRUCTION
Single Mode
Video
Set vertical channel trigger type as video trigger
CH1
Select CH1 as the trigger source
of level
NTSC
SECAM
Line
Synchronic trigger in video line
knob to set the line number
Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
MENU
SETTING
INSTRUCTION
Single
Mode
CH1
CH2
Select CH1 as the trigger source.
Select CH2 as the trigger source.
slope
5.Advanced User Guidebook
Figure 5-17 Video trigger menu
Source
Modu
Sync
Mode
Holdoff
3. Slope Trigger
CH2
EXT
EXT/5
PAL
Field
Odd
Even
Line NO.
Holdoff
Select CH2 as the trigger source
The external trigger input
1/5 of the external trigger source for increasing range
Select video modulation
Synchronic trigger in video field
Synchronic trigger in video odd filed
Synchronic trigger in video even field
Synchronic trigger in designed video line, turn the M
100ns~10s, adjust the M knob to set time interval
before another trigger occur
Slope trigger sets the oscilloscope as the positive/negative slope trigger within the
specified time.
The Slope Trigger Menu is shown as Figure 5-18.
Figure 5-18 Slope trigger menu
Slope trigger menu list:
Slope Set vertical channel trigger type as slope trigger.
Source
When
Slope selecting
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knob to set slope
High level
Slew rate
Adjust M knob to set the
upper limit.
Slew rate = (High level - Low level) / Settings
Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
MENU
SETTING
INSTRUCTION
Set vertical channel trigger type as pulse trigger.
CH1
CH2
Select CH1 as the trigger source.
Select CH2 as the trigger source.
AC
Not allow DC portion to pass.
frequency portion pass
Polarity
Threshold
&SlewRate
Mode
Holdoff
Low level
Normal
Single
Holdoff
Set slope condition; turn the M
time.
High level
Adjust M knob to set Low level lower limit.
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100ns ~ 10s, turn the M knob to set time interval
before another trigger occur.
4. Pulse Width Trigger
Pulse trigger occurs according to the width of pulse. The abnormal signals can be
detected through setting up the pulse width condition.
The Pulse Width Trigger Menu is shown as Figure 5-19.
Figure 5-19 Pulse Width Tri gg er menu
Pulse Width Trigger menu list:
Single Mode Pulse
Source
DC
Coupling
HF
LF
when
Allow all portion pass.
Not allow high frequency of signal pass and only low
frequency portion pass.
Not allow low frequency of signal pass and only high
Choose the polarity
Select pulse width condition and adjust the M knob
to set time.
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Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
MENU
SETTING
INSTRUCTION
Alternate Mode
Edge
Set vertical channel trigger type as edge trigger.
CH1
CH2
Select CH1 as the trigger source.
Select CH2 as the trigger source.
AC
Not allow DC portion to pass.
high frequency portion pass.
Trigger in signal rising edge
Trigger in signal falling edge
Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
Mode
Holdoff
Normal
Single
Holdoff
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100ns~10s, adjust M knob to set time interval before
another trigger occur.
Alternate trigger
Trigger signal comes from two vertical channels when alternate trigger is on. This
mode is used to observe two unrelated signals. You can choose different trigger modes
for different channels. The options are as follows: edge, video, pulse or slope.
1. Alternate trigger (Trigger mode: Edge)
Alternate trigger (Trigger Type: Edge) Menu is shown as Figure 5-20.
Figure 5-20 Alternate trigger (Trigger Type: Edge) Menu
Alternate trigger (Trigger Type: Edge) Menu list:
Source
DC
Couple
Slope
Mode
Holdoff
HF
LF
Holdoff
Allow all portion pass.
Not allow high frequency of signal pass and only
low frequency portion pass.
Not allow low frequency of signal pass and only
100ns~10s, adjust M knob to set time interval before
another trigger occur.
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MENU
SETTING
INSTRUCTION
Alternate Mode
Video
Set vertical channel trigger type as video trigger.
CH1
CH2
Select CH1 as the trigger source.
Select CH2 as the trigger source.
NTSC
SECAM
Line
Synchronic trigger in video line.
M knob to set the line number
Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
MENU
SETTING
INSTRUCTION
Alternate
Mode
CH1
CH2
Select CH1 as the trigger source.
Select CH2 as the trigger source.
slope
2. Alternate trigger (Trigger Mode: video)
Alternate trigger (Trigger Type: video) Menu is shown as Figure 5-21.
Figure 5-21 Alternate trigger (Trigger Type: video) Menu
Alternate trigger (Trigger Type: video) Menu list:
Source
Modu
Sync
Mode
Holdoff
PAL
Field
Odd Field
Even Field
Line NO.
Holdoff
Select video modulation
Synchronic trigger in video field.
Synchronic trigger in video odd filed
Synchronic trigger in video even field
Synchronic trigger in designed video line, turn the
100ns~10s, adjust the M knob to set time interval
before another trigger occur.
3. Alternate trigger (Trigger Mode: Slope)
Alternate trigger (Trigger Type: Slope) Menu is shown as Figure 5-22.
Figure 5-22 Alternate trigger (Trigger Type: Slope) Menu
Alternate trigger (Trigger Type: Slope) menu list:
Slope Set vertical channel trigger type as slope trigger.
Source
When
Select slope condition
Set slope condition; turn the M knob to set time.
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Turn the M knob to set the
Slew rate=( High level- Low level)/ Settings
Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
MENU
SETTING
INSTRUCTION
Alternate
Mode
CH1
CH2
Select CH1 as the trigger source.
Select CH2 as the trigger source.
AC
Not allow DC portion to pass.
frequency portion pass.
Polarity
Auto
Reset
Acquire waveform even no trigger occurred
Set Holdoff time as 100ns
Threshold
Mode
Holdoff
High level
Low level
Slew rate
Holdoff
Turn the M knob to set Low level
100ns~10s, adjust the M knob to set time interval
before another trigger occur.
High level
4. Alternate trigger (Trigger Mode: Pulse)
Alternate trigger (Trigger Type: Pulse) Menu is shown as Figure 5-23.
Figure 5-23 Alternate trigger (Trigger Type: Pulse) Menu
Alternate trigger (Trigger Type: Pulse) menu list:
Pulse Set vertical channel trigger type as pulse trigger.
Source
Coupling
when
Mode
Holdoff
DC
HF
LF
Holdoff
Allow all portion pass.
Not allow high frequency of signal pass and only low
frequency portion pass.
Not allow low frequency of signal pass and only high
Choose the polarity
Select pulse width condition and turn the M knob to
set time.
100ns~10s, adjust M knob to set time interval before
another trigger occur.
Term interpretation
1. Source: Trigger can occur from several sources: Input channels (CH1, CH2), AC
Line, Ext, Ext/5.
Input: It is the most commonly used trigger source. The channel will work when
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selected as a trigger source whatever displayed or not.
Ext Trig: The instrument can be triggered from a third source while acquiring data
from CH1 and CH2. For example, to trigger from an external clock or with a signal
from another part of the test circuit. The EXT, EXT/5 trigger sources use the
external trigger s ignal connected t o the EXT TRIG con nector. Ext uses t he signal
directly; it has a tri gger level range of -0.6V to +0.6V. The EXT/5 trigger source
attenuates the signal by 5X, which extends the trigger l evel range to -3V to +3V.
This allows the oscilloscope to trigger on a larger signal.
AC Line: AC power can be used to display signals related to the power line
frequency, such as lighting equipment and power supply devices. The oscilloscope
gets triggered on its power cord, so you do not have to input an AC trigger signal.
When AC Line is selected as trigger source, the oscilloscope automatically set
coupling to DC, set trigger level to 0V.
2. Trigger Mode:
The trigger mode determines how the oscilloscop e beh aves i n t he ab sence of a trig ger
event. The oscilloscope provides three trigger modes: Auto, Normal, and Single.
Auto: This sweep mode allows the oscilloscope to acquire waveforms even when
it does not detect a trigger condition. If no trigger condition occurs while the
oscilloscope is waiting for a specific period (as determined by the time-base
setting), it will force itself to trigger.
Normal: The Normal mode allows the oscilloscope to acquire a waveform only
when it is triggered. If no trigger occurs, the oscilloscope keeps waitin g, and the
previous waveform, if any, will remain on the display. Single: In Single mode,
after pressing the Run/Stop key, the oscilloscope waits for trigger. While the
trigger occurs, the oscilloscope acquires one waveform then stop.
Single: In Single mode, after pressing the Run/Stop key, the oscilloscope waits for
trigger. While the trigger occurs, the oscilloscope acquires one waveform then
stop.
3. Coupling:
Trigger coupling determines what part of the signal passes to the trigger circuit.
Coupling types include AC, DC, LF Reject and HF Reject.
AC: AC coupling blocks DC components.
DC: DC coupling passes both AC and DC components.
LF Reject: LF Reject coupling blocks DC com ponent, and attenuates all signal
with a frequency lower than 8 kHz.
HF Reject: HF Reject coupling attenuates all signals with a frequency higher
than 150 kHz.
4. Holdoff: Trigger holdoff can be used to stabilize a waveform. The holdoff time is
the oscilloscope's waiting period before starting a new trigger. The oscilloscope will
not trigger until the holdoff time has expired. It provides a chance for user to check
the signal in a short period and helps to check some complex signals, such as AM
waveform etc.
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Function Menu
Setting
Description
Sample
Normal sampling mode.
Use to capture maximal and minimal
samples. Finding highest and lowest points
It is used for the
detection of the jamming burr and the
possibility of reducing the confusion.
How to Operate the Function Menu
The function menu control zone includes 8 function menu buttons: Measure, Acquire,
Utility, Cursor, Autoscale, Save, Display, Help and 4 immediate-execution buttons:
Autoset, Run/Stop, Single, Copy.
How to Implement Sampling Setup
Press the Acquire button and the menu is displayed in the scr een, shown as Figure
5-24.
Figure 5-24 ACQU MODE Menu
The description of the Acqu Mode Menu is shown as follows:
Peak detect
Sample
Average 4, 16, 64, 128
over adjacent intervals.
It is used to reduce the random and don't-care
noises, with the optional number of averages.
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Function Menu
Setting
Description
1000
10K
100K
1M
10M
The description of the Record Length Menu is shown as follows:
Length
Choose the record length
Change the ACQU Mode settings an d observe the con sequent variatio n of the wave
form displayed.
Figure 5-25 Peak Detect mode, under which the burrs on the falling edge of
the square wave, can be detected and the noise is heavy.
Figure 5-26 Normal ACQU Mode display, in which no burr can be detected.
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Function Menu
Setting
Description
Dots
Only the sampling points are displayed.
in the display is filled with the vector form.
OFF
Infinity
Clear
Clear the persistence
ON
OFF
Turn on the XY display function;
Turn off the XY display function.
ON
OFF
Turn on the Trig Freq;
Turn off the Trig Freq .
(only for
Connect the VGA port to a monitor. If set it as
ed on the
computer monitor.
Figure 5-27 The displayed waveform after the noise is removed under the
Average Mode, in which the average number of 16 is set.
How to Set the Display System
Press the Display button and the menu displayed in the screen is shown as Figure
5-28.
Figure 5-28 Display Set Menu
The description of the Display Set Menu is shown as follows:
Type
Time
Persist
Vect
1 second
2 seconds
5 seconds
The space between the ad jacent s ampli ng point s
Turn the M knob to set the persistence time
XY Mode
Trig Freq
VGA Disp
the model with "V")
ON
OFF
ON, the waveform could be display
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Display Type: With the F1 menu selection button pushed down, you can shift
between Vect and Dots types. The differences b etween the two disp lay types can be
observed through the comparison between Figure 5-29 and Figure 5-30.
Figure 5-29 Display in the Vector Form
Figure 5-30 Display in Dots form
Persist
When the Persist function is used, the persistence display effect of the picture tube
oscilloscope can be simulated. The reserved original data is displayed in fade color
and the new data is in bright color. Press the H2 button, the Persist menu will display
at the right of screen. Press the F1 button, different persistence time can be chosen:
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OFF, 1second, 2second, 5second and Infinity. W hen the "Infinity" option is set for
Persist time, the measuring points will be stored till the controlling value is changed
(see Figure 5-31). By pressing the F2 button, the persistence will be cleared.
Figure 5-31 Infinite Persistence Display
XY Format
This format is only applicable to Channel 1 and Channel 2. After the XY display
format is selected, Channel 1 is displayed in the horizontal axis and Channel 2 in the
vertical axis; the oscilloscope is set in the un-triggered sample mode: the data are
displayed as bright spots.
The operations of all control knobs are as follows:
The Vertical VOLTS/DIV and the VERTICAL POSITION knobs of Channel 1
are used to set the horizontal scale and position.
The Vertical VOLTS/DIV and the VERTICAL POSITION knobs of Channel 2
are used to set the vertical scale and position continuously.
The following functions can not work in the XY Format:
Reference or digital wave form
Cursor
Time base control
Trigger control
FFT
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Operation steps:
1. Press the Display button and call out the Display Set Menu.
2. Press the H3 menu selecti on button to set XY Mode ON. The display format is
changed to be XY mode (see Figure 5-32).
Figure 5-32 XY Display Mode
Trig Freq
It is a 6-digit trig freq. The trig freq can measure frequencies from 2Hz to the full
bandwidth. Only i f the measured channel has triggering signal and in Edge mode, it
can measure freq uency correctly. In the Single trigger mode, it is a one channel trig
freq and it can only measure the frequency of the triggering channel. In the ALT
trigger mode, it is a two channel trig freq and it can measure the frequency of two
channels. The trig freq is displayed at the right bottom of the screen.
To turn the trig freq on or off:
1. Press the Display button.
2. In the Display menu, press the H4 button to t oggle between the trig freq display
ON or OFF.
VGA Output (only for t he model with "V")
The VGA port could be connected to a computer monitor. The image of the
oscilloscope can be clearly displayed on the monitor.
To set the VGA Output:
1. Press the Display button.
2. In the Display menu, press the H5 button to toggle between ON or OFF.
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Function Menu
Setting
Description
Wave
Cut Wave
Choose the saving type
How to
and Recall a waveform”)
When the type is Wave, the menu shows as following:
CH1
Math
Choose the address whi ch the wav eform is
saved to or recall from.
Recall or close the waveform stored in the
When the show is
number and relevant
will prompt "None is saved".
Save the waveform of the source to the
is BIN.
Save to internal storage or USB storage.
When External is selected, save the
by OWON waveform
analysis software (on the supplied CD).
When the type is Setting, the menu shows as following:
How to Save and Recall a Waveform
Press the Save button, you can save the waveforms, settings or screen images. The
menu displayed in the screen is shown as Figure 5-33.
Figure 5-33 Waveform Save Menu
The description of the Save Function Menu is shown as the following table:
Type
Source
Object & Show
Setting
Image
Record
CH2
Object 1~15
Show
ON
OFF
(about the Record type, see "
Record/Playback Waveforms" on P55 ;
about the CutWave t ype, see “How to Cut
Choose the waveform to be saved.
current object address.
ON, if the current object address has b een
used, the stored waveform will be shown,
the address
information will be displayed at the top left
of the screen; if the address is empty, it
Save
Storage
Internal
External
selected address. Whatever the Type of
save menu is set, you can save the
waveform by just pressing the Copy panel
button in any user interface. Storage format
waveform according to the current record
length (see "Record Length Menu" on P43);
the file name is editable. The waveform
file could be open
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Setting1
Save the current oscilloscope setting to the
internal storage
Load
Recall the setting from the selected address
When the type is Image, the menu shows as following:
Save the current display screen. The file
file name is editable. The file is stored in
BMP format.
Setting
…..
The setting address
Setting8
Save
can be only stored in a USB storage, so a
Save
USB storage must be connected first. The
Save and Rec all the Waveform
The SDS series oscilloscope can store 15 waveforms, which can be displayed with the
current waveform at the same time. The stored waveform called out can not be
adjusted.
In order to save the waveform of the CH1 into the address 1, the operation steps
should be followed:
1. Saving: Press the H1 button, the Type menu will display at the left of screen,
turn the M knob to choose Wave for Type.
2. Press the H2 button and press F1 button to select CH1 for Source.
3. Press the H3 button and press the F1, turn the M knob to select 1 as object
address.
4. Press the H5 button and press F1 button to select Internal.
5. Press the H4 button to save the waveform.
6. Recalling: Press t he H3 button, and press the F1, turn the M knob to select 1 as
object address. Press F2 button to set Show as ON. The waveform stored in the
address will be shown, the address number and relevant information will be
displayed at the top left of the screen.
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Figure 5-34 Wave Savi ng
Tip:
Whatever the Type of save menu is set, you can save the waveform by just pressing
the Copy panel button in any user interface. If the Storage of the s ave menu is set as
"External", you should install the USB disk. Please refer to the contents below to
install the USB disk and name the file to be saved.
Save the current screen im age:
The screen image can only be stored in USB disk, so you should connect a USB disk
with the instrument.
1. Install the USB disk: Insert the USB disk into the "1. USB Host port" of
"Figure 4-3 Right side panel". If an icon appears on the top right of the
screen, the USB disk is installed successfully. Once the USB disk cannot be
recognized, you could format the U disk according to the methods on P51.
2. After the USB disk is installed, press the Save panel button, the save menu is
displayed at the bottom of the screen.
3. Pres s the H1 button, the Type menu will display at the left of screen, turn the M
knob to choose Image for Type.
4. Pres s the H4 button, the input ke yboard used to edit the file name will pop up.
The default name is current system date. Turn the M knob to choose the keys;
press the M knob to input the chosen key. The length of file name is up to 25
characters. Choose and press the Enter key of the keyboard to end the input and
store the file with the current name.
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End and store
Close the keyboard
Switch between
capital and small
Delete the last
character
Figure 5-35 Edit the File Name
Format U disk
The supported format of the USB disk: FAT32 file system, allocation unit size cannot
exceed 4K, mass storage U disk is also supported. Once the USB disk cannot be
recognized, you could format it into the supported format and try again. Follow any of
the following two methods to format U disk.
Use system-provided function to format U disk:
1. Connect U disk to the computer.
2. Right click Computer- Manage to enter Computer Management interface.
3. Click Disk Management menu, and information about U disk will display on the
right side with red mark 1 and 2.
Figure 5-36: Disk Management of computer
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4. Right click 1 or 2 red mark area, choose Format. And system will pop up a
warning message, click Yes.
Figure 5-37: format U disk w ar ni ng
5. Set File System FAT32, Allocation unit size 4096. Check “Perform a quick
format” to ex ecute a quick form at. Click OK, and then click Yes on the warning
message.
Figure 5-38: Formatting U disk setting
6. Formatting process
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Figure 5-39: Formatting U disk
7. Check whether the U disk is FAT32 with allocation unit size 4096 after
formatting.
Use Minitool Partition Wizard in the supplied CD to format
Tip: There are many tools for U disk formatting on the market, just take Minitool
Partition Wizard for example here.
1. Connect U disk to the computer.
2. Open the software Minitool Partition Wizard.
3. Click Relo ad Disk on the pull-down menu at the top left or press keyboard F5,
and information about U disk will display on the right side with red mark 1 and 2.
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Figure 5-40: Reload Disk
4. Right click 1 or 2 red mark area, choose Format.
Figure 5-41: Choose format
5. Set File System FAT32, Cluster size 4096. Click OK.
Figure 5-42: Format setting
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6. Click Apply at the top left of the menu. Then click Yes on the pop-up warning to
begin formatting.
Figure 5-43: Apply setting
7. Formatting process
Figure 5-44: Format process
8. Format U disk successfully
Figure 5-45: Format successfully
How to Cut and Recall a waveform
To cut waveform between two time cursors, generate a file with the suffix “*.ota”,
and save it to external m emory devi ce. To recall the waveform is to use AG1022F or
AG2052F manufactured by OWON to read *.ota and recall the waveform being cut
from oscilloscope.
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To cut waveform :
1. Connect U-disk to SDS series oscilloscope
2. Press Save to call out the save menu
3. Pres s the H1 button, the type menu will display at the left of the screen, turn the
M knob to choose Cut W a ve for type.
4. Move cursor1 (CH1 zero position knob) and cursor2 (CH2 zero position knob) to
choose the range of wave to be cut.
5. Pres s the H2 button, and the input keyboard will pop up. The default name is the
current system date. Turn M knob to choose the keys, and press M knob to input
the chosen ke ys. Choose and press Enter key of the keyboard to end the input and
store the file with the current name to U-disk.
Figure 5-46: Cut Wav e
To recall wavefor m：
(1) Enter the operation menu: Press →Editable Wform →SelectWform.
Enter the following interface:
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Figure 5-47: Choose storage device
(2) Select USBDEVICE, enter Next Level. Turn the knob or press / direction
key to select the saved example.ota waveform file.
Figure 5-48: choose the .ota file
(3) Choose Recall output. And the tip “Read file successfully” will show on the
interface.
Figure 5-49: Read file
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Menu
Setting
Instruction
OFF
Storage
Close wave record function
Set storage menu
End frame
Turn the M knob to select the number of frames to
record (1～1000)
Turn the M knob to select the interval between
recorded frames (1ms～1000s)
ON
OFF
Refresh wave during recording
Stop refreshing
Play
Stop
Begin to record
Stop recording
Tips:
1. Normally the frequ ency, amplitude, and offset of the recalled wav e are the same as
the wave being cut, but when the frequency, amplitude, and offset are set out of the
limit range, then AG generators would use the c urrent parameter, which leads to the
recalled wave not totally the same as the cut wave.
2. The max data number of AG1022F ARB is 8192. When the wave cut from
oscilloscope contains data number more than 8192, AG1022 will compress data. On
the contrary if the data number is less than 8192, AG1022F will use linear
interpolation.
3. The max data number of AG2052F ARB is 1000000. When the wave cut from
oscilloscope contains data number more than 1000000, AG2052F will compress data.
On the contrary if the data number is less than 1000000, AG2052F will use linear
interpolation.
How to Record/Playback Waveforms
Wave Record function can record the input current wave. You can set the interval
between recorded fr ames in the range of 1ms~1000s.The max frame number reaches
1000,and you can get better analysis effect with playback and storage function. The
storage medium contains two kinds: Internal and External.
When the storage medium is Internal, Wave Record contains four modes: OFF,
Record, Playback and Storage.
When storage medium i s External（See P61 Menu of Wave Record to external）, Wave
Record contains two modes: OFF, Record.
Record: To record wave according to the interval until it reaches the end frame set.
Record menu shows as follows:
Mode
Record
Playback
Set record menu
Set playback menu
Record mode
FrameSet
Interval
Refresh
Operate
Note:
Both of the waveforms of Channel 1 and Channel 2 will be recorded. If a Channel is
turned off while recording, the waveform of the channel is invalid in the playback
mode.
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Menu
Setting
Instruction
Start frame
Turn the M knob to select the number of start frame
played back frames (1ms～1000s)
Loop
Once
Play back the wave continuously
Play back the wave just one time
Play
Stop
Begin to record
Stop recording
Figure 5-50 Wave Record
Playback: Play back the wave recorded or saved.
Playback menu shows as follows:
Playback Mode
FrameSet
End frame
Cur frame
Interval
to playback (1～1000)
Turn the M knob to select the number of end frame
to playback (1～1000)
Turn the M knob to select the number of current
frame to playback (1～1000)
Turn the M knob to select the interval between
Play mode
Operate
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Menu
Setting
Instruction
Turn the M knob to select the number of start frame
to store (1～1000)
Turn the M knob to select the number of end frame to
store (1～1000)
Save
Save the waveform record file to the internal memory
Load
Load the waveform record file from the memory
Figure 5-51 Wave Playback
Storage: Save the current wave according to the start frame and end frame set.
Storage menu shows as follows:
Storage
Start frame
Mode
Frame Set
End frame
Figure 5-52 Wave Storage
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Menu
Setting
Instruction
OFF
Record
Close wave record function
Set record menu
End frame
Turn the M knob to select the number of frames to
record (1～1000)
Turn the M knob to select the interval between
recorded frames (1ms～1000s)
Infinity
Record infinitely until the storage medium is full
ON
OFF
Refresh wave during recording
Stop refreshing
To use wave record function, do as follows:
(1) Press Save button.
(2) Press H1 button, turn the M knob to choose Record.
(3) Press H2 button. In the Mode menu, press F2 button to choose Record.
(4) Press H3 button. In the Frame Set menu, press F1 button and turn the M knob to
set End frame; press F2 button and turn the M knob to select the i nt erval between
recorded frames.
(5) Press H4 button, choose whether to refresh the wave when recording.
(6) Press H5 button to start recording.
(7) Press H2 button. In the Mode menu, press F3 button to enter the Playback mode.
Set the frame range and Playmode .Then, press H5 button to play.
(8) To save the wave recorded, press H2 button. In the Mode menu, press F4 button
to choose Storage, then set the range of frames to store, press H4 button to save.
(9) To load the waveform from the internal memory, press Load, and then enter
playback mode to analyze the wave.
When storage medium is External, Wave Record contains two modes: OFF,
Record.
Figure 5-53: Menu of Wave Record to external
Record to external menu shows as follows:
Mode
Record mode
FrameSet
Interval
Refresh
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Play
Stop
Begin to record
Stop recording
Operate
Note:
Both of the waveforms of Channel 1 and Channel 2 will be recorded. If a Channel is
turned off while recording, the waveform of the channel is invalid in the playback
mode.
Figure 5-54: Frame setting (Record to external)
To use wave record to external, do as follows:
1. Press Save button.
2. Press H1 button, turn the M knob to choose Record.
3. Press H2 button. In the Mode menu, press F2 button to choose Record. Press H3
to choose External as the storage medium.
4. Press H3 button. In the Frame Set menu, press F1 button and turn the M knob to
set End frame; press F2 button and turn the M knob to s elect th e in ter v al b et ween
recorded frames. Press F3 to wave record to external in finitely if necessary, and
end frame will display “-”.
5. Press H4 button, choose whether to refresh the wave when recording.
6. Press H5 button to start recording.
Connect external device to the co mputer, and wave_record_0.bin is the recorded
file. Open the software, and do as follows to play back the waveform.
1. Choose Communications Auto Player.
2. Transform recording waveform from machine.
3. Add the well transformed files.
4. Set play mode and time delay.
5. Click the green button on the left corner to begin playing back the waveform.
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Figure 5-55: Play back waveform by software
How to Implement the Auxiliary System Function Setting
●Config
Press the Utility button and turn the M knob to select Config to go to the following
menu.
Figure 5-56 Configuration Menu
The description of Configuration Menu is shown as the follows:
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Function Menu
Setting
Description
Chinese
Others
On
Off
Hour Min
Setting Hour/Minute
Day Month
Setting Date/Month
Year
Setting Year
Lock all keys. Unlock method: press 50%
, then press
Force button, repeat 3 times.
About
Version number and serial number showing
Function Menu
Setting
Description
BackLight
0%~100%
Turn the M knob to adjust the backlight.
ON
OFF
Menu Time
5s~50s, OFF
Set the disappear time of menu
Language
Set Time
KeyLock
English
Display
Choose the display language of the operating
system.
On/Off the date display
button in trigger control area
●Display
Press the Utility button and turn the M knob to select the Display to go to the
following menu.
Figure 5-57 Display Menu
The description of Display Menu is shown as the follows:
Graticule
Battery
Select the grid type
Turn on or off the battery display
●Adjust
Press the Utility button and turn the M knob to s elect the Adjust to go to the following
menu.
Figure 5-58 Adjust Menu
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Function Menu
Setting
Description
Self Cal
Carry out the self-calibration procedure.
Default
Call out the factory settings.
ProbeCh.
Check whether probe attenuation is good
The description of Adjust Menu is shown as the follows:
Do Self Cal (Self-Calibration)
The self-calibration procedure can improve the accuracy of the oscilloscope under
the ambient temperature to the greatest extent. If the change of the ambient
temperature is up to or exceeds 5℃, the self-calibration procedure should be
executed to obtain the highest level of accuracy.
Before executing the self-calibration procedure, disconnect the probe or wire and
the input connector. Press the Utility button. Then, press the H1 button and the
function menu will display at the left of the screen, turn the M knob to choose
"Adjust", and then press the H2 button to choose "Self Cal", entering the
self-calibration procedure of the instrument.
Probe checking:
To check whether probe attenuation is good. The results contain 3 circumstances:
Overflow compensation, Good compensation, Inadequate compensation. According to
the checking result, users can adjust probe attenuation to the best. Operation steps are
as follows:
1. Connect the probe to CH1, adjust the probe attenuation to the maximum.
2. Press Utility menu，press H1 and the function menu will display at the left of the
screen，turn the M knob to choose "Adjust", “ProbeCh.”shows at the bottom
menu；
3. Press H4 ，choose “ProbeCh.”，tips about probe checking shows on the screen；
Figure 5-59 Self-Calibration
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4. Press H4 again to begin probe checkin g and the checking result will occur after
3s; Press any other key to quit.
Figure 5-60：Probe Checking
● Pass/Fail
The Pass/Fail function monitors changes of signals and output pass or fail signals by
comparing the input signal that is within the pre-defined mask.
Press the Utility button and turn the M knob to select the Pass/fail to go to the
following menu.
Figure 5-61 Pass/Fail menu
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Function Menu
Setting
Description
Enable
Operate
Control enable switch
Control operate switch
Pass
Info
Signal tested corresponds with the rule
Control the display status of info frame
Source
Create
Select source CH1, CH2 or Math
Use the rule set as testing rule
Number
Load
Choose any one from Rule1~Rule8 as your rule name
Load some rule as the testing rule
The description of Pass/Fail Menu is shown as the follows:
operate
Output
Rule
SaveRule
Fail
Beep
Stop
Horizontal
Vertical
Save
Signal tested not correspond with the rule
Beep when it satisfies the rule
Stop once satisfying the rule
Change the Horizontal tolerance value by turning the
M knob
Change the Vertical tolerance value by turning the
M knob
Click Save to save the rule
Pass/Fail test:
Detect whether the input signal is within the limits of the rule, if it exceeds limits of
the rule, it is "Fail"; otherwise it is "Pass". Also it can output fail or pass signal by
built-in and configurable output port. To run the test, read the following steps:
1. Press Utility button, then H1 button, turn the M knob to choose Pass/fail menu
option, Pass/Fail menu will be displayed in the bottom.
2. Enable switch on: Press H2 button to show Operate menu, then, press F1 button
to set Enable as ON.
3. Create rule: Press H4 button to enter Rule setting menu. Press F1 button to
choose the source; Press F2 button, turn the M knob to set Horizontal tolerance;
Press F3 button, turn the M knob to set Vertical tolerance; Press F4 button to
create the rule.
4. Set output type: Press H3 button to enter Output option setting. Choose any one
or two of the options "Pass", "Fail" or "Beep". "Pass" and "Fail" are mutually
exclusive options, which could not be chosen simultaneously. "Stop" means stop
once the condition satisfies your setting.
5. Begin to test: Press H2 button, then F2 button to select "Start", the test will
begin.
6. Save rule: Press H5 button, then F2 button to save the rules, which could be
called up at once when need, press F3 button to call up the rule saved.
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Function
Menu
Trig level
Pass/fail
Output trig signal synchronously
Output High Level when Pass , and Low Level when Fail
Figure 5-62 Pass/Fail test
Note:
1. When Pass/Fail is ON, if XY or FFT is ready to run, then Pass/Fail will be closed;
under the mode of XY or FFT, Pass/Fail is unable.
2. Under the mode of Factory, Auto Scale and Auto Set, Pass/Fail will be closed.
3. When no save setting left in the rule save, tip will be given to show "NO RULE
SAVED".
4. Under the status of stop, data comparing will stop, and when it goes on running,
the number of Pass/Fail will increase from the former number, not from zero.
5. When the waveform playback mode is on, Pass/Fail is used to test the
played-back waveform specially.
● Output
Press the Utility button and turn the M to select the Output to go to the following
menu.
Figure 5-63 Output menu
The description of Output menu is shown as the follows:
Setting Description
Type
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Function
Menu
Press F1 button to switch between each byte, turn the M knob
to change value (0～255)
Port
Turn the M knob to change value (0～4000)
Press F3 button to switch between each byte, turn the M knob
to change value (0～255)
Press F4 button to switch between each byte, turn the M knob
to change value (0～FF)
Press F5 button t o switch between each byte, turn the M knob
to change value (0～255)
Save set
Save the current settings and prompt "reset to update the config"
Function
Menu
Frequency
Turn the M knob to change value (1KHz～100KHz)
Duty
Turn the M knob to change value (5%～95%)
Reset
Set Frequency to 1KHz, set Duty to 50%
● LAN Set
Using the LAN port, the oscilloscope can be connected with a computer directly, or
through the router to connect. The network parameters can be set in the menu below.
Refer to "Using LAN Port" on P84 for the operation steps.
Press the Utility button and turn the M knob to select the LAN Set to go to the
following menu.
Figure 5-64 LAN Set menu
The description of LAN Set menu is shown as the follows:
Setting Description
IP
Set
Netgate
Phy addr
Net mask
● Signal (Only SDS7072(V) has this menu)
You can adjust the signal parameters of "5. Probe Compensation" in Figure 4-1 Front
panel.
Press the Utility button and turn the M knob to select the Signal to go to the
following menu.
Figure 5-65 Signal menu
The description of Signal menu is shown as the follows:
Setting Description
Set
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Function Menu
Setting
Description
Type
Press F1 ,show the measure types
CH1
CH2
Show all
Show all the measures on the screen
Add the selected m easure types (shown
types at most)
Remove all
Remove all the measures
Turn the M knob, select the types need
to be deleted.
Remove
Remove the chosen measure type
How to Measure Automatically
Press the Measure button to display the menu for the settings of the Automatic
Measurements.
The oscilloscopes provide 24 parameters for auto measurement, including Vpp,
Vmax, Vmin, Vtop, Vbase, Vamp, Vavg, Vrms, Overshoot, Preshoot, Freq, Period,
Rise Time, Fall Time, Delay A→B , Delay A→B ,+Width, -Width, +Duty, -Duty,
Cycle rms, Cursor rms, Duty cycle, Phase.
The menu is displayed as Figure 5-48.
Figure 5-66 Measure M enu
The "Automatic Measurements" menu is described as the following table:
Add
Remove
Source
Add
Type
Select the source
at the left bottom, you could only add 8
Measure
The measured values can be detected on each channel simultaneously. Only if the
waveform channel is in the ON state, the measurement can be performed. The
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automatic measuremen t cannot be performed in the following situation: 1) On the
saved waveform. 2) On the mathematical waveform. 3) On the XY format. 4) On
the Scan format.
Measure the frequen cy, the peak-to-peak voltage of the Channel CH1 and the mean,
the RMS of the Channel CH2, following below steps:
1. Press the Measure button to show the automatic measurement function menu.
2. Press the H1 button to display the Add menu.
3. Press the F2 button and choose CH1 as the source.
4. Press the F1 button, the type items will display at the left of screen, and turn the
M knob to choose Period.
5. Press the F4 button, the period options added completes.
6. Press the F1 button again, the type items will display at the left of screen, and turn
the M to choose Freq.
7. Press the F4 button, the frequency added completes, finish setting of CH1.
8. Press the F2 button and choose CH2 as the source.
9. Press the F1 button, the type items will display at the left of screen, and turn the
M to choose Mean.
10. Press the F4 button, the M ean added co mp let es.
11. Press the F1 button, the type items will display at the left of screen, and turn the
M to choose PK-PK.
12. Press the F4 button, the PK-PK added completes, finish setting of CH2.
The measured value will be displayed at the bottom left of the screen
automatically (see Figure 5-49).
Figure 5-67 automatic measurement
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The automat ic measuremen t of voltage parameters
The SDS series oscilloscopes provide automatic voltage measurements including
Vpp, Vmax, Vmin, Vavg, Vamp, Vrms, Vtop, Vbase, Overshoot and Preshoot,
Cycle rms, Cursor rms. Figure 5-53 below shows a pulse with some of the voltage
measurement points.
Figure 5-68
Vpp: Peak-to-Peak Voltage.
Vmax: The maximum amplitude. The most positive peak voltage measured over
the entire waveform.
Vmin: The minimum amplitude. The most negative peak voltage measured over
the entire waveform.
Vamp: Voltage between Vtop and Vbase of a waveform.
Vtop: Voltage of the waveform's flat top, useful for square/pulse waveforms.
Vbase: Voltage of the waveform's flat base, useful for square/pulse waveforms.
Overshoot: Defined as (Vmax-Vtop)/Vamp, useful for square and pulse
waveforms.
Preshoot: Defined as (Vmin-Vbase)/Vamp, useful for square and pulse
waveforms.
Average: The arithmetic mean over the entire waveform.
Vrms: The true Root Mean Square voltage over the entire waveform.
Cycle rms: The true Root Mean Square voltage over the first entire period of the
waveform.
Cursor rms: The true Root Mean Square voltage over the rang of two cursors
The automatic measurem en t of time parameters
The SDS series oscilloscopes provide time parameters auto-measurements
include Frequency, Period, Rise Time, Fall Time, +Width, -Width, Delay 1→2 ,
Delay 1→2 , +Duty and –Duty, Duty cycle.
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Figure 5-54 shows a pulse with some of the time measurement points.
Figure 5-69
Rise Time: Time that the leading edge of the first pulse in the waveform takes to
rise from 10% to 90% of its amplitude.
Fall Time: Time that the falling edge of the first pulse in the waveform takes to
fall from 90% to 10% of its amplitude.
+Width: The width of the first positive pulse in 50% amplitude points.
-Width: The width of the first negative pulse in the 50% amplitude points.
Delay 1→2 : The delay between the two channels at the rising edge.
Delay 1→2 : The delay between the two channels at the falling edge.
+Duty: +Duty Cycle, defined as +Width/Period.
-Duty:-Duty Cycle, defined as -Width/Period.
Duty cycle: Defines as (The width of the positive pulse)/(Entire period)
The phase difference of two channels:
Phase: Compare the rising edge of CH1 and CH2, calculate phase difference of
two channels.
Phase difference =[ (Delay between channels at the rising edge)*PI]/Period.
How to Measure with Cursors
Press the Cursor button to display the cursor measurement function menu (CURS
MEAS) in the screen.
The Cursor Measurement for normal mode:
The cursor measuremen t includ es Voltage Meas urement and Time Measurement
at normal mode, shown as Figure 5-52.
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Function
Menu
OFF
Time
Switch off the cursor measurement.
Display the time measurement cursor and menu.
CH1
CH2
Display the channel generating the waveform to
which the cursor measurement will be applied.
Figure 5-70 CURS MEAS Menu
The description of the cursor measurement men u is shown as the following table:
Setting Description
Type
Voltage
Display the voltage measurement cursor and menu.
Source
When carrying out the cursor measurement, the position of Cursor 1 can be adjusted
with the VERTICAL POSITION knob of Channel 1, and that of Cursor 2 can be
adjusted with the VERTICAL POSITION knob of Channel 2.
Perform the following operation steps for the voltage cursor measurement of the
channel CH1:
1. Press Cursor and recall the Cursor Measure menu.
2. Press the H2 button and choose CH1 for Source.
3. Press the H1 button, the Type menu will display at the right of the screen.
Then press the F2 button to choose Voltage for Type, with two purple dotted
lines displayed along the horizontal direction of the screen, which indicating
Cursor1 and Cursor2.
4. According to the measured waveform, adjust the positions of Cursor1 and
Cursor2 by turning the VERTICAL POSITION knob of CH1 and CH2.
Cursor increment window at the left bottom of waveform shows absolute
value of D-value of cursor 1 and cursor 2 and the present position of the two
cursors (see Figure 5-53).
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Figure 5-71 Waveform of Voltage Cursor Measurement
Carry out the following operation steps for the time cursor measurement of the
channel CH1:
1. Press Cursor and recall the Cursor Measure menu.
2. Press the H2 button and choose CH1 for Source.
3. Press the H1 button, the Type menu will display at the right of the screen.
Press the F3 button to select Time for Type, with two purple dotted lines
displayed along the vertical direction of the screen, which indicating Cursor
1 and Cursor 2.
4. According to the measured waveform, adjust the positions of Cursor1 and
Cursor2 by turning the VERTICAL POSITION knob of CH1 and CH2.
The cursor increment window at the left bottom of the waveform shows
absolute difference, frequency and the present time of the two cursors.
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Function
Menu
OFF
Freq
Switch off the cursor measurement.
Display the Freq measurement cursor and menu.
Figure 5-72 Waveform of Cursor Measurement
The Cursor Measurement for FFT mode:
Press the Cursor button to display the cursor measurement function menu (CURS
MEAS) in the screen, which includes Vamp Measurement and Freq Measurement at
the mode of FFT, shown as Figure 5-55.
Figure 5-73 CURS MEAS Menu
The description of the cursor measurement menu is shown as the following table:
Setting Description
Type
Vamp
Display the Vamp measurement cursor and menu.
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Source
Math FFT
Display the channel for the cursor measure.
When carrying out the cursor measurement, the position of Cursor 1 can be adjusted
with the VERTICAL POSITION knob of Channel 1, and that of Cursor 2 can be
adjusted with the VERTICAL POSITION knob of Channel 2.
Perform the following operation steps for the Vamp cursor measurement:
1. Press Cursor and recall the Cursor Measure menu.
2. Press the H1 button, the Type menu will display at the right of the screen. Press
the F2 button to select Vamp for Type, with two purple dotted lines displayed
along the horizontal direction of the screen indicating Cursor1 and Cursor2.
3. According to the measured waveform, adjust the positions of Cursor1 and
Cursor2 by turning the VERTICAL POSITION knob of CH1 and CH 2. Cursor
increment window at the left bottom shows absolute value of the two cursors
amplitude difference and the present position.
Figure 5-74 wave of Vamp curs or meas ur e m ent
Carry out the following operation steps for the Freq cursor measurement:
1. Press Cursor and recall the Cursor Measure menu.
2. Pres s the H1 button, the Type menu will display at the right of the screen. Press
the F3 button to select Freq for Type, with two purple dotted lines displayed
along the vertical direction of the screen indicating the corresponding Cursor 1
and Cursor 2.
3. According to the measured waveform, adjust the positions of Cursor1 and
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Cursor2 by turning the VERTICAL POSITION knob of CH1 and CH2.
Increment window shows two cursors difference value and the present position
(see Figure 5-57).
Figure 5-75 wave of Freq cursor measurement
How to Use Autoscale
This is a very useful function for first time users to carry out a simple and qui ck test
on the input signal. The function is applied to follow-up signals automatically even if
the signals change at any time. Autoscale enables the instrument to set up trigger
mode, voltage division and time scale automatically according to the type, amplitude
and frequency of the signals.
Figure 5-76 Autoscal e men u
The menu is as follows:
Function Menu Setting Instruction
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Follow-up and adjust both vertical and horizontal
ON
Autoscale
OFF
Mode
Turn on Autoscale.
Turn off Autoscale.
settings.
Follow-up and only adjust horizontal scale.
Follow-up and only adjust vertical scale.
Show Multi-period waveforms.
Wave
Only show one or two periods.
If you want to measure the two-channel signal, you can do as the follows:
1. Press Autoscale button, the function menu will appear.
2. Press H1 to choose ON.
3. Press H2 and choose for Mode item.
4. Press H3 and choose for Wave item.
Then the wave is displayed in the screen, shown as Figure 5-59.
Figure 5-77 Autoscal e H or izontal-Vertical multi-period waveforms
Note:
1. Entering into Autoscale function and the symbol ○AE A will be flickering on the top
left of the screen every 0.5 second.
2. In the mode of Autoscale, the oscilloscope can self-estimate "Trigger Type"
(Single, and Alternate) and "Mode" (Edge, Video). At this point, the trigger menu
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Function Items
Setting
Acquisition Mode
Current
Vertical Coupling
DC
Vertical Scale
Adjust to the proper division.
Bandwidth
Full
Horizontal Level
Middle
Horizontal Sale
Adjust to the proper division
Trigger Type
Current
Trigger Source
Show the minimum number of channels.
Trigger Coupling
Current
Trigger Slope
Current
is not available.
3. At the mode of XY and STOP status, pressing Autoset to enter into Autoscale,
DSO switches to YT mode and AUTO triggering.
4. At the mode of Autoscale, DSO is always set as DC coupling with AUTO
triggering. In this case, making Triggering or Coupling settings have no effect.
5. At the mode of Autoscale, if adjust the vertical position, voltage division, trigger
level or time scale of CH1 or CH2, the oscilloscope will turn off Autoscale
function. To back to Autoscale, press Autoset.
6. Turn off the submenu at the Autoscale menu, the Autoscale is off and turn on the
submenu still enters into the function.
7. When video triggering, the horizontal time scale is 50us. If one channel is
showing edge signal, the other channel is showing video one, the time scale refers
to 50us as video one as standard.
8. While the Autoscale is working, settings below will be made forcibly:
(1) The DSO will switch from non-main time base to main time base status.
(2) The DSO will switch to Peak detection mode if it is in Average mode.
How to Use Built-in Help
1. Press Help button, the catalog will display in the screen.
2. Press H1 or H2 to choose help topic, or just turn the M knob to choose.
3. Press H3 to view the details about the topic, or just press the M knob.
4. Press H5 to exit the help, or just do other operations.
How to Use Executive Buttons
Executive Buttons include Autoset, Run/Stop, Single, Copy.
Autoset
It's a very useful and quick way to apply a set of pre-set functions to the incoming
signal, and display the best possible viewing waveform of the signal and also
works out some measurements for user as well.
The details of functions applied to the signal when using Autoset ar e shown as
the following table:
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Trigger Level
Mid-point Setting
Trigger Mode
Auto
Display Format
YT
Judge waveform type by Autoset
Five kinds of types: Sine, Square, video signal, DC level, Unknown signal.
Menu as follow:
Sine: (Multi-period, Single-period, FFT, Cancel Autoset)
Square: (Multi-period, Single-period, Rising Edge, Falling Edge, Cancel Autoset)
Video signal:
DC level, Unknown signal:
Description for some icons:
Multi-period： To display multiple periods
Single-period： To display single period
FFT： Switch to FFT mode
Rising Edge： Display the rising edge of square waveform
Falling Edge： Display the falling edge of square waveform
Cancel Autoset：Go back to display the upper menu and waveform information
Run/Stop: Enable or disable sampling on input signals.
Notice: W hen there is no sampling at STOP state, the vertical division and
the horizontal time base of the waveform still can be adjusted within a
certain range, in other words, the signal can be expanded in the horizontal or
vertical direction.
When the horizontal time base is ≤50ms, the horizontal time base can be
expanded for 4 divisions downwards.
Single: Press this button you can set the trigger mode as single directly, so when
Copy: You can save the wavefo rm by just pressing the Copy panel button in any
trigger occurs, acquire one waveform then stop.
user interface. The source wave and the storage location are according to
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the settings of the Save function menu when the Type is Wave. For more
details, please see "Save Function Menu" on P48.
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6.Communication with PC
6. Communication with PC
SDS series digital storage oscilloscope support communications with a PC through USB,
LAN or COM port. You can use the Oscilloscope communication software to store,
analyze, display the data and remote control.
Here is how to connect with PC. First, install the Oscilloscope communication software on
the supplied CD. Then there are several ways of connection to choose from.
Using USB Port
(1) Connection: Use a USB data cabl e to con ne ct th e US B Dev ice p o r t in the right panel
of the Oscilloscope to the USB port of a PC.
(2) Instal l the driver: R un the Oscilloscope communication software on PC, press F1 to
open the help document. Follow the steps of title "I. Device connection" in the
document to install the driver.
(3) Port setting of the software: Run the Oscilloscope software; click
"Communications" in the menu bar, choose "Ports-Settings", in the setting dialog,
choose "Connect using" as "USB". After connect successfully, the connection
information in the bottom right corner of the software will turn green.
Figure 6-1: Connect with PC through USB port
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6.Communication with PC
Using LAN Port
Connect directly
(1) Connection. Plug in the LAN line to the LAN port in the right side panel of the
oscilloscope; plug the other end into the LAN interface of the computer.
(2) Set the network parameters of the computer. Since the oscilloscope can not
support obtaining an IP address automatically, you should assign a static IP address.
Here we set the IP address to 192.168.1.71.
Figure 6-2 Set the network parameters of the computer
(3) Set the network parameters of the OWON Oscilloscope Software. Run the
software on the computer; choose the "Ports-settings" of the "Communications" menu
item. Set "Connect using" to LAN. About the IP, the first three bytes is same as the IP
in the step (2), the last byte should be different. Here, we set it to 192.168.1.72. The
range of the port value is 0 ～4000, but the port which under 2000 is always be used,
so it is suggested to set it to the value above 2000. Here, we set it to 3000.
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Figure 6-3 Set the network parameters of the OWON Oscilloscope Software
(4) Set the network parameters of the oscilloscope. In the oscilloscope, press the
Utility button and press H1 button, turn the M knob to select the LAN Set; press the
H2 button, the set menu is displayed on the right. Set the IP and the Port to t he same
value as the "Ports-settings" in the software in step (3). Press the H3 button to select
"Save set", it prompts "reset to update the config". After resetting the oscilloscope, if
you can get data normally in the oscilloscope software, the connection is successful.
Figure 6-4 Set the network parameters of the oscilloscope
Connect through a router
(1) Connection. Use a LAN line to connect the oscilloscope with a router, the LAN port
of the oscilloscope is in the right side panel; the computer should be connected to the
router too.
(2) Set the network parameters of the computer. Since the oscilloscope can not
support obtaining an IP address automatically, you should assign a static IP address.
The Default gateway and Subnet mask should be set according to the rout er. Here we
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set the IP address to 192.168.1.71, Subnet mask is 255.255.255.0, Default gateway is
192.168.1.1.
Figure 6-5 Set the network parameters of the computer
(3) Set the network parameters of the OWON Oscilloscope Software. Run the
software on the computer; choose the "Ports-settings" of the "Communications" menu
item. Set "Connect using" to LAN. About the IP, the first three bytes is same as the IP
in the step (2), the last byte should be different. Here, we set it to 192.168.1.72. The
range of the port value is 0 ～4000, but the port which under 2000 is always be used,
so it is suggested to set it to the value above 2000. Here, we set it to 3000.
Figure 6-6 Set the network parameters of the OWON Oscilloscope Software
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6.Communication with PC
(4) Set the network parameters of the oscilloscope. In the oscilloscope, press the
Utility button and press H1 button, turn the M knob to select the LAN Set; press the
H2 button, the set menu is displayed on the right. Set the IP and the Port to t he same
value as the "Ports-settings" in the software in step (3). The Netgate and Net mask
should be set according to the router. Press the H3 button to select "Save set", it
prompts "reset to update the config". After resetting the oscilloscope, if you can get
data normally in the oscilloscope software, the connection is successful.
Figure 6-7 Set the network parameters of the oscilloscope
Using COM Port
(1) Connection. Use a data cable to connect the COM port in the right panel of the
Oscilloscope, to the COM port of a PC.
(2) Port setting of the software: Run the Oscilloscope software; click
"Communications" in the menu bar, choose "Ports-Settings", in the setting dialog,
choose "Connect using" as COM.
To learn about how to operate the software, you can press F1 in the software to open the
help document.
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7. Demonstration
Example 1: Measurement a Simple Signal
The purpose of this example is to display an unknown signal in the circuit, and
measure the frequenc y and peak-to-peak voltage of the signal.
1. Carry out the following operation steps for the rapid display of this signal:
(1) Set the p robe menu attenuation coefficient as 10X and that of the switch in the
probe switch as 10X (see "How to Set the Probe Attenuation Coefficient" on P14).
(2) Connect the probe of Channel 1 to the measured point of the circuit.
(3) Press the Autoset button.
The oscilloscope will implement the Autoset to m ake the waveform optimized, based
on which, you can further regulate the vertical and horizontal divisions till the
waveform meets your requirement.
2. Perform Automatic Measurement
The oscilloscope can measure most of the displayed signals automatically. To
measure the period and frequency of the Channel 1 and the mean and peak-to-peak
voltage of the Channel 2, follow below steps:
(1) Press the Measure button to activate the measurement function menu.
(2) Press the H1 to display the Add menu.
(3) Press the F2 button to choose CH1 as the source.
(4) Press th e F1 button, the type items will display at the left of screen, and turn the
M knob to choose Period.
(5) Press the F4 button, the period measurement will be added.
(6) Press the F1 button again, the type items will display at the left of screen, and
turn the M knob to choose Freq.
(7) Press th e F4 button, the frequency measurement will be added, finish settings of
channel 1.
(8) Press the F2 button to choose CH2 as the source.
(9) Press th e F1 button, the type items will display at the left of screen, and turn the
M knob to choose Mean.
(10) Press the F4 button, the mean measurement will be added.
(11) Press the F1 button, the type items will display at the left of screen, and turn the
M knob to choose PK-PK.
(12) Press the F4 button, the peak-to-peak voltage measurement will be added, finish
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settings of channel 2.
Then, the period, frequenc y, mean and peak-to-peak voltage will be displayed at the
bottom left of the screen and change periodically (see Figure 7-1).
Figure 7-1 Measure Frequency and PK-PK value for a given signal
Example 2: Gain of a Amplifier in a Metering Circuit
The purpose of this example is to work out the Gain of an Amplifier in a Metering
Circuit. First we use Oscilloscope to measure the amplitude of input signal and output
signal from the circuit, then to work out the Gain by using given formulas.
Set the probe menu attenuation coefficient as 10X and that of the switch in the probe
as 10X (see "How to Set the Probe Attenuation Coefficient" on P14).
Connect the oscilloscope CH1 channel with the circuit signal input end and the CH2
channel to the output end.
Operation Steps:
(1) Press the Autoset button and the oscilloscope will automatically adjust the
waveforms of the two channels into the proper display state.
(2) Press the Measure button to show the Measure menu.
(3) Press the H1 button.
(4) Press the F2 button and choose CH1.
(5) Press the F1 button and turn the M knob to choose PK-PK.
(6) Press the F2 button and choose CH2.
(7) Press the F1 button again and turn the M knob to choose PK-PK.
(8) Read the peak-to-peak voltages of Channel 1 and Channel 2 from the bottom left
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7.Demonstration
of the screen (see Figure 7-2).
(9) Calculate the amplifier gain with the following formulas.
Gain = Output Signal / Input signal
Gain (db) = 20×log (gain)
Figure 7-2 Waveform of Gain Me as ur e me nt
Example 3: Capturing a Single Signa l
It's quite easy to use Digital Oscilloscope to capture non-periodic signal, such as a
pulse and burr etc. But the common problem is how to set up a trigger if you have no
knowledge of the signal? For example, if the puls e is the logic signal of a TTL level,
the trigger level should be set to 2 volts and the trigger edge be set as the rising edge
trigger. With various functions supported by our Oscilloscope, user can solve this
problem by taking an easy approach. First to run your test using auto trigger to find
out the closest trigger level and trigger type, this helps user to make few small
adjustments to achieve a proper trigger level and mode. Here is how we achieve this.
The operation steps are as follows:
(1) Set the p robe menu attenuation coefficient to 10X and that of the switch in the
probe to 10X (see "How to Set the Probe Attenuation Coefficient" on P14).
(2) Adjust the VOLTS/DIV and SEC/DIV knobs to set up a proper vertical and
horizontal ranges for the signal to be observed.
(3) Press the Acquire button to display the Acquire menu.
(4) Press the H1 button to display the Acquire Mode menu.
(5) Press the F2 button to choose Peak detect.
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(6) Press the Trigger Menu button to display the Trigger menu.
(7) Press the H1 button to display the Trigger Type menu.
(8) Press the F1 to choose Single as the type.
(9) Turn the M knob to choose Edge as the mode.
(10) Press the H2 button to display the Source menu.
(11) Press the F1 button to choose CH1 as the source.
(12) Press the H3 button to display the Coupling menu; press the F2 button to choose
DC as the Coupling.
(13) Press the H4 button to choose (rising) as the Slope.
(14) Rotate the TRIG LEVEL knob and adjust the trigger level to the roughl y 50% of
the signal to be measured.
(15) Check the Trigger State Indicator on the top of the screen, if it is not Ready, push
down the Run/Stop button and start acquiring, wait for trigger to happen. If a
signal reaches to the set trigger level, one sampling will be made and then
displayed in the screen. By using this approach, a random pulse can be captured
easily. For instance, if we want to find a burst burr of high amplitude, set the
trigger level to a slightly higher value of the average signal level, press the
Run/Stop button and wait a trigger. Once there is a burr occurring, the instrument
will trigger automatically and record the waveform during the period around the
trigger time. By turning the HORIZONTAL POSITION knob in the horizontal
control area in the panel, you can change the horizontal triggering position to
obtain the negative delay, making an easy observation of the waveform before the
burr occurs (see Figure 7-3).
Figure 7-3 Capturing a Single Signal
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Example 4: Analy ze the Details of a Signal
Noise is very common inside most of the electronic signal. To find out what's inside
the noise and reduce the level of noise is very important function our oscilloscope is
capable to offer.
Noise Analysis
The level of noise so metime indicates a fai lure of electronic ci rcuit. The Peak Dete ct
functions acts an important role to help you to find out the details of these noise. Here
is how we do it:
(1) Press the Acquire button to display the Acquire menu.
(2) Press the H1 button to display ACQU Mode menu.
(3) Press the F2 button to choose Peak detect.
The signal displayed on the screen containing some noise, by turning on Peak Detect
function and changing time base to slow down the incoming signal, any peaks or burr
would be detected by the function (see Figure 7-4).
Figure 7-4 Signal with Noises
Separate Noises from the Signal
When focusing on signal itself, the important thing is to reduce the noise level as
lower as possible, this would enable user to have more details about the signal. The
Average function offered by our Oscilloscope can help you to achieve this.
Here are the steps for how to enable Average function.
(1) Press the Acquire button to display the Acquire menu.
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(2) Press the H1 button to display ACQU Mode menu.
(3) Press th e F3 button, turn the M knob and observe the waveform obtained from
averaging the waveforms of different average number.
User would see a much reduced random noise level and make it easy to see more
details of the signal itself. After appl ying Average, user can easily identify the bu rrs
on the rising and falling edges of some part of the signal (see Figure 7-5).
Figure 7-5 Reduce Noise level by using Average function
Example 5: Applicati on of X-Y Function
Examine the Phase Difference between Signals of two Channels
Example: Test the phase change of the signal after it passes through a circuit network.
X-Y mode is a very useful when examining the Phase shift of two related signals.
This example tak es you st ep by step to check out the phas e change of t he signal after
it passes a specified circuit. Input signal to the circuit and output signal from circuit
are used as source signals.
For the examination of the input and output of the circuit in the form of X-Y
coordinate graph, please operate according to the following steps:
(1) Set the probe menu attenuation coefficient for 10X and that of the switch in the
probe for 10X (see "How to Set the Probe Attenuation Coefficient" on P14).
(2) Connect the probe of channel 1 to the input of the network and that of Channel 2
to the output of the network.
(3) Push down the Autoset button, with the oscilloscope turning on the signals of the
two channels and displaying them in the screen.
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The signal must be
(4) Turn the VOLTS/DIV knob, making the amplitudes of two signals equal in the
rough.
(5) Press the Display button and recall the Display menu.
(6) Press the H3 button and choose XY Mode as ON.
The oscilloscope will display the input and terminal characteristics of the network
in the Lissajous graph form.
(7) Turn the VOLTS/DIV and VERTICAL POSITION knobs, optimizing the
waveform.
(8) With the elliptical oscillogram method adopted, observe and calculate the phase
difference (see Figure 7-6).
centered and kept in the
horizontal direction.
Based on the expression sin (q) =A/B or C/D, thereinto, q is the phase difference
angle, and the definitions of A, B, C, and D are shown as the graph above. As a result,
the phase differ ence angle can be obtained, namely, q =± arcsin (A/B) or ± arcsin
(C/D). If the principal axis of the ellipse is in the I and III quadrants, the determined
phase difference angel should be in the I and IV quadrants, that is, in the range of
(0 ～π /2) or (3π / 2 ～2π). If the principal axis of the ellipse is in the II and IV
quadrants, the determined phase difference angle is in the II and III quadrants, that is,
within the range of (π / 2 ～π) or (π ～3π /2).
Figure 7-6 Lissajous Graph
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7.Demonstration
Example 6: Video Signal Trigger
Observe the video circuit of a television, apply the video trigger and obtain the stable
video output signal display.
Video Field Trigger
For the trigger in the video field, carry out operations according to the following
steps:
(1) Press the Trigger Menu button to display the trigger menu.
(2) Press the H1 button to display the trigger type menu.
(3) Press the F1 button to choose Single for Type.
(4) Turn the M knob to choose Video as the mode.
(5) Press the H2 button to display the Source menu.
(6) Press the F1 button to choose CH1 for Source.
(7) Press the H3 button to display the Modu menu.
(8) Press the F1 button to choose NTSC for the modulation.
(9) Press the H4 button to display the sync menu.
(10) Press the F2 button to choose Field for Sync.
(11) Turn the VOLTS/DIV, VERTICAL POSITION and SEC/DIV knobs to obtain
a proper waveform display (see Figure 7-7).
Figure 7-7 Waveform Captured from Video Field Trigger
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