PDS Series
Portable Colour Digital Storage Oscilloscope
User Manual
■ PDS5022S
■ PDS6042S
■ PDS6062S
■ PDS6062T
■ PDS7062T
■ PDS7102T
WWW.OWON.COM.CN
Mar. 2011 edition
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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.
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Tel:+86-592-2575666
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User Manual of PDS Series Oscilloscope
General Warranty
The Lilliput warrants that the product will be free from defects in materials and
workmanship for a period of three 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, adapter is one year. This warranty only applies to the original purchaser
and is not 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 nearest Lilliput’s Sales and Service Offices for services or a complete
copy of the warranty statement.
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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User Manual of PDS Series Oscilloscope
Table of Contents
General Safety Information ................................................................................................ 4
Safety Notice ........................................................................................................................ 5
Safety Symbols ..................................................................................................................... 5
General features of the PDS Serial Oscilloscope ............................................................... 7
Junior User's Guidebook..................................................................................................... 8
Introduction to the Front Panel and the User's Interface of the PDS series Oscilloscope .... 9
Check the Package Contents .................................................................................................... 13
To perform the Function Inspection ........................................................................................ 14
To perform the Probe Compensation....................................................................................... 16
To set the Probe Attenuation Coefficient................................................................................. 17
To use the Probe Safely ............................................................................................................. 18
To perform Self-calibration ...................................................................................................... 19
Introduction to the Vertical System ......................................................................................... 20
Introduction to the Horizontal System .................................................................................... 21
Introduction to the Trigger System .......................................................................................... 22
Advanced User's Guidebook ............................................................................................. 23
To set the Vertical System ......................................................................................................... 24
Perform Mathematical Manipulation Function ..................................................................... 30
Using FFT function ................................................................................................................................ 31
Application of VERTICAL POSITION and VOLTS/DIV Knobs......................................... 36
To set the Horizontal system..................................................................................................... 37
To set the Trigger System .......................................................................................................... 39
Trigger Control .......................................................................................................................... 40
The trigger control of PDS5022S、PDS6042S、PDS6062S、PDS6062T........................................... 40
The trigger control of PDS7062T、PDS7102T ..................................................................................... 45
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User Manual of PDS Series Oscilloscope
To operate the Function Menu ................................................................................................. 52
To perform Sampling Setup...................................................................................................... 52
To set the Display System.......................................................................................................... 54
To Save and Recall a Waveform............................................................................................... 58
To perform the Auxiliary System Function Setting................................................................ 60
To perform the Automatic Measurement ................................................................................ 62
To perform the Cursor Measurement...................................................................................... 65
To use Autoscale......................................................................................................................... 68
To use Executive Buttons .......................................................................................................... 71
Quick Start Guide .............................................................................................................. 72
Example 1: Measurement of Simple Signals ........................................................................... 72
Example 2: Gain of the Amplifier in the Metering Circuit.................................................... 73
Example 3: Capture the Single Signal ..................................................................................... 74
Example 4: Analyze the Details of a Signal ............................................................................. 77
Example 5: Application of X-Y Function ................................................................................ 79
Example 6: Video Signal Trigger.............................................................................................. 80
Troubleshooting................................................................................................................. 83
Appendix A: Technical Specifications .............................................................................. 84
Appendix B: Package Contents......................................................................................... 90
Appendix C: Maintenance, Cleaning and Repairing....................................................... 90
Appendix D: Battery Using Guide .................................................................................... 91
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User Manual of PDS Series Oscilloscope
General Safety Information
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.
Prevent the Fire or Bodily 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 the proper power line. Only use the power cord specially provided for this product
or that has been approved to be used in this user state.
Connect or Disconnect Correctly. When the probe or testing wire is connected to the
power lead, please do not connect and disconnect the probe or testing wire at random.
Product Grounded. This product is grounded through the power lead grounding
conductor. In order to prevent any electric shocking, the grounding conductor must be
connected to the ground. It requires guarantee that this product has been already grounded
correctly 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).
Pay attention to the nominal values of all terminals. In order to prevent any fire or
electric shock risks, please pay attention to all the nominal values and marks of this
product. Before implement any connections for this product, please read the user's manual
of this product to understand the information about the rated values further.
Do not make any operations without the instrument cover installed. If the cover or
panel has already been removed, please don't operate this product.
Use the proper fuse. Only the fuse complying with the specified type and nominal value
for this product can be used.
Avoid touching any exposed circuit. When the product is on power, please don't touch
the uncovered contacts and parts.
Please don't make any operations while there is an uncertain fault emerged. If
suspecting damage to this product, please contact the qualified maintenance personnel for
check.
Keep a good ventilation condition. Please consult the detailed installation instruction in
the user's manual so that this product can be erected correctly, keeping it under a good
ventilation condition.
Please do not make any operations in a moist environment.
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User Manual of PDS Series Oscilloscope
Please do not make any operates in an explosive environment.
Keep the products surface clean and dry.
Safety Notice
The following notice may appear on the products:
Warning. A warning statement indicates the conditions and actions which may
endanger the life safety.
Note. A note statement indicates the conditions and actions which may cause
damage to this product or other property.
Danger: It indicates that there may be an immediate injury to you when you encounter
this mark.
Warning: It indicates that there may not be an immediate injury to you when you
encounter this mark.
Note: It indicates that there may be damage to this product or other property.
Safety Symbols
The following symbol may appear on the products:
High Voltage
Please Consult the Manual
Protective Ground End
5
Earth Chassis Ground
Earth Ground
User Manual of PDS Series Oscilloscope
To avoid body damage and prevent product and connected equipment dam. This product
can only be used in the specified applications. Carefully read the following safety
information before using the test tool.
Warning:
To avoid fire or electrical shock if an oscilloscope input is connected to more
than 42V peak (30Vrms) or on circuits of more than 4800VA, please take note of
below items:
z Only use accessory insulated voltage probes or test lead
z Before using DSO, please inspect oscilloscope accessories such as probe to see
if they are in good condition, if not, please replace them.
z Remove probes, test leads and other accessories that are not necessary use.
z Remove USB cable which connects oscilloscope and computer.
z Please pay special attention when the probe is set as 1:1 and do not apply
input voltages above the rating of the instrument because the probe tip
voltage will directly transmit to the oscilloscope.
z Do not use exposed metal BNC or banana plug connectors.
z Do not insert metal objects into connectors.
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User Manual of PDS Series Oscilloscope
General features of the PDS Serial
Oscilloscope
Model
Bandwidth
Sample Rate
PDS5022S
25MHz
100MS/s
PDS6042S
40MHz
250MS/s
PDS6062S
60MHz
250MS/s
PDS6062T
60MHz
250MS/s
PDS7062T
60MHz
500MS/s
PDS7102T
100MHz
500MS/s
„
Record length of 5,000 points for each channel;
„
Reading-out with the cursor;
„
Twenty automatic measurement functions;
„
Autoscale function;
„
Color liquid crystal display of high resolution and high contrast;
„
Storage and recall waveforms;
„
Automatic setting function provided capable of fast setting;
„
Multiple-waveform calculation function;
„
Built-in FFT function;
„
Perform detecting the average and peak values of the waveform;
„
Digital real-time oscilloscope;
„
Edge, video and Alternating triggering function;
„
RS232 or USB communication ports;
„
Different continuous displaying time;
„
Multiple language User interface.
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User Manual of PDS Series Oscilloscope
Junior User's Guidebook
This chapter deals with the following topics mainly:
z
Introduction to the front panel and the user’s interface of the PDS series oscilloscope
z
To perform the general inspection
z
To perform the function inspection
z
To perform the probe compensation
z
To set the probe attenuation coefficient
z
To use the probe safely
z
To perform an self-calibration
z
Introduction to the vertical system
z
Introduction to the horizontal system
z
Introduction to the trigger system
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User Manual of PDS Series Oscilloscope
Introduction to the Front Panel and the User's Interface of the
PDS series Oscilloscope
When you get a new-type oscilloscope, you should get acquainted with its front panel
at first and the PDS series digital storage oscilloscope is no exception. This chapter
makes a simple description of the operation and function of the front panel of the PDS
series oscilloscope, enabling you to be familiar with the use of the PDS series
oscilloscope in the shortest time. The PDS 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 in the column on the right side of the
display screen are menu selection buttons (defined as F1 to F5 from top to bottom
respectively), 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.
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User Manual of PDS Series Oscilloscope
Fig.1 The Front Panel of a PDS series Oscilloscope
Function Buttons
Adjustment
Menu Selection
Vertical Control Connector
Horizontal
Control
Trigger
Control
Fig.2 Explanatory Drawing for Operations of the PDS series Oscilloscope
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User Manual of PDS Series Oscilloscope
Fig.3 Illustrative Drawing of Display Interfaces
1.
The Trigger State indicates the following information:
Auto: The oscilloscope is under the Automatic mode and is collecting the
waveform under the non-trigger state.
Trig’d: The oscilloscope has already detected a trigger signal and is collecting the
after-triggering information.
Ready: All pre-triggered data have been captured and the oscilloscope has been
already ready for accepting a trigger.
Scan: The oscilloscope captures and displays the waveform data continuously in
the scan mode.
Stop: The oscilloscope has already stopped the waveform data acquisition.
2.
Waveform Viewing Area.
3.
The purple pointer indicates the horizontal trigger position, which can be adjusted
by the horizontal position control knob.
4.
The reading shows the time deviation between the horizontal trigger position and
the screen centre line, which equals 0 in the screen center.
5.
This reading shows the time deviation between the horizontal trigger position and
the window centre line, which is regarded as 0 in the window center.
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User Manual of PDS Series Oscilloscope
6.
It indicates the current function menu.
7.
It indicates the operation options for the current function menu, which changes
with the function menus.
8.
The purple pointer shows the trigger level position.
9.
The reading shows the trigger level value.
10. The reading shows the trigger source.
11. It shows the selected trigger type:
Rising edge triggering
Falling edge triggering
Video line synchronous triggering
Video field synchronous triggering
12. The reading shows the window time base set value.
13. The reading shows the main time base set value.
14. The two yellow dotted lines indicate the size of the viewing expanded window.
15. The icon shows the coupling mode of the CH2 channel.
“—“ indicates the direct current coupling
“ ~” indicates the AC coupling
“
” indicates GND coupling.
16. The reading shows the vertical scale factor (the Voltage Division) of the CH2
channel.
17. The icon indicates the coupling mode of the CH1 channel:
The icon "–" indicates the direct current coupling
The icon "~" indicates the AC coupling
The icon "
” indicates GND coupling.
18. The reading indicates the vertical scale factor (the Voltage Division) of the CH1
channel.
19. The information shows the zero point positions of CH1 or CH2 channel.
20. 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.
21. 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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User Manual of PDS Series Oscilloscope
22. The positions of two purple dotted line cursors measurements.
23. The reading shows the frequency of the two channels. It is a 6 digits cymometer.
Its measurement range of frequency is 2Hz to full bandwidth. When the
triggering mode is edge triggering, it is a one channel cymometer and it can only
measure the frequency of the triggering channel. When the triggering mode is
alternating triggering, it is a two channel cymometer and it can measure the
frequency of two channels.
Note: Only the model of PDS7062T and PDS7102T support the cymometer
function.
Check the Package Contents
After you get a new PDS 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 accessories have been already described in the Appendix B
“Accessories” of this Manual. You can check whether there is any loss of accessories
with reference to this description. If it is found that there is any accessory lost or
damaged, please 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.
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User Manual of PDS Series Oscilloscope
To perform the Function Inspection
Make a fast function check to verify the normal operation of the instrument, according
to the following steps:
1.
Connect the Instrument to the Power and Push down the Power Switch Button.
The instrument carries out all self-check items and shows the prompt “Press any Key
Enter the Operating Mode”. Press the “UTILITY” button to get access to the
“FUNCTION” menu and push down F2 the menu selection button to call out the
function “Recall Factory”. The default attenuation coefficient set value of the probe in
the menu is 10X, shown as Fig.4.
Fig.4 Power on the Instrument
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.
Connect the probe tip and the ground clamp to the connector of the probe
compensator, shown as Fig.5.
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User Manual of PDS Series Oscilloscope
Probe comp
CH1
Fig.5 Connection of the Probe
3. Press the AUTO SET Button.
The square wave of 1 KHz frequency and 5V peak-peak value will be displayed in
several seconds (see Fig.6).
Fig.6 Auto set
Check CH2 by repeating Step 2 and Step 3.
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User Manual of PDS Series Oscilloscope
To perform 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 presents 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, and connect the oscilloscope 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 connector of the probe compensator
and connect the reference wire clamp with the ground wire connector of the
probe connector, and then press the button AUTOSET (see Fig.5).
2.
Check the displayed waveforms and regulate the probe till a correct
compensation is achieved (see Fig.7 and Fig.8).
Fig.7 Displayed Waveforms of the Probe Compensation
3.
Repeat the steps mentioned if necessary.
Fig.8 Adjust Probe
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User Manual of PDS Series Oscilloscope
To set the Probe Attenuation Coefficient
The probe has several attenuation coefficients, which will influence the vertical scale
factor of the oscilloscope.
If it is required to change (check) the set value of the probe attenuation coefficient,
press the function menu button of the channels used, then push down the selection
button corresponding to the probe till the correct set value is shown.
This setting will be valid all the time before it is changed again.
Note: The attenuation coefficient of the probe in the menu is preset to 10X when
the oscilloscope is delivered from the factory.
Make sure that the set value of the attenuation switch in the probe is the same as the
menu selection of the probe in the oscilloscope.
The set values of the probe switch are 1X and 10X (see Fig.9).
Fig.9 Attenuation Switch
Note: When the attenuation switch is set to 1X, the probe will limit the bandwidth
of the oscilloscope in 5MHz. If it is needed to use the whole bandwidth of the
oscilloscope, the switch must be set to 10X.
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User Manual of PDS Series Oscilloscope
To use the Probe Safely
The safety guard ring around the probe body protects your finger against the electric
shock, shown as Fig.10.
Fig.10 Finger Guard
Warning: In order to avoid suffering from the electric shock, please keep your
finger behind the safety guard ring of the probe body during the operation.
In order to protect you from suffering from the electric shock during your using the
probe, do not touch the metal part of the probe tip when the probe is connected to
the power supply.
Before making any measurements, please connect the probe to the instrument and
connect the ground terminal to the earth.
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User Manual of PDS Series Oscilloscope
To perform Self-calibration
The self-calibration application can make the oscilloscope reach the optimum
condition rapidly to obtain the most accurate measurement value. You can carry out
this application program at any time, but when the range of variation of the ambient
temperature is up to or over 5℃, this program must be executed.
For the performing of the self-calibration, all probes or wires should be disconnected
with the input connector first. Then, press the “UTILITY” button to call out the
FUNCTION menu; push down the F3 menu selection button to choose the option
“ Perform Self-Calibration”; finally, run the program after confirming that everything
is ready now.
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User Manual of PDS Series Oscilloscope
Introduction to the Vertical System
Shown as Fig.11, there are a series of buttons and knobs in VERTICAL
CONTROLS. The following practices will gradually direct you to be familiar with
the using of the vertical setting.
Fig.11 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 wave form.
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 will be removed by filtration.
This mode helps you display the AC component of the signal with a higher
sensitivity.
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.
z
Rotate 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.
z
Press buttons of “CH1 MENU”, “CH2 MENU” and “MATH MENU”, the
operation menu, symbols, wave forms and scale factor status information of the
corresponding channel will be displayed in the screen.
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User Manual of PDS Series Oscilloscope
Introduction to the Horizontal System
Shown as Fig.12, 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.
Fig.12 Horizontal Control Zone
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. The
horizontal scanning speed steps from 5ns up to 100s according to the stepping
mode of
1-2.5-5---- PDS5022S;
1-2-5 ---- PDS6042S, PDS6062S, PDS6062T, PDS7062T, PDS7102T.
2.
Use the “HORIZONTAL POSITION” knob to adjust the horizontal position of
the signal in the waveform window. The “HORIZONTAL POSITION” knob is
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 wave form moves horizontally with the knob when you rotate the
“Horizontal Position” knob.
3.
With the “HORIZONTAL MENU” button pushed down, you can set and
initiate the Window Expansion.
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User Manual of PDS Series Oscilloscope
Introduction to the Trigger System
Shown as Fig.13, there are a knob and four buttons in the “TRIGGER
CONTROLS”. The following practices will direct you to be familiar with the setting
of the trigger system gradually.
Fig.13 Trigger Control Zone
1.
Press the “TRIG MENU” button and call out the trigger menu. With the
operations of the 5 menu selection buttons, the trigger setting can be changed.
2.
Use the “LEVEL” knob to change the trigger level setting.
With the rotation of the “LEVEL” knob, it can found that the trigger indicator in
the screen will move up and down with the rotation of the knob. With the
movement of the trigger indicator, it can be observed that the trigger level value
displayed in the screen changes.
3.
Press the button “SET TO 50%” to set the trigger level as the vertical mid point
values of the amplitude of the trigger signal.
4.
Press the “FORCE TRIG” button to force a trigger signal, which is mainly
applied to the “Normal" and "Single” trigger modes.
5.
The “SET TO ZERO” button is used to reset the trigger horizontal position.
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User Manual of PDS Series Oscilloscope
Advanced User's Guidebook
Up till now, you have already been familiar with the initial operations of
“VERTICAL CONTROLS”, “HORIZONTAL CONTROLS” and “TRIGGER
CONTROLS”, and the functions of the function areas, buttons and knobs in the front
panel of the PDS series oscilloscope. Based the introduction of the previous Chapter,
the user should have an intimate 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 One Junior Users' Guidebook”.
This chapter will deal with the following topics mainly:
z
To set the Vertical System
z
To set the Horizontal System
z
To set the Trigger System
z
To perform the Sampling Setup
z
To set the Display System
z
To Save and Recall a Wave Form
z
To perform the Auxiliary System Function Setting
z
To perform the Automatic Measurement
z
To perform the Cursor Measurement
z
To use Autoscale function
z
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 PDS series oscilloscope.
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User Manual of PDS Series Oscilloscope
To set the Vertical System
The VERTICAL CONTROLS includes three menu buttons such as CH1 MENU,
CH2 MENU and MATH MENU, and four knobs such as VERTICA POSITION,
VOLTS/DIV (one group for each of the two channels).
Setting of CH1 and CH2
Every channel has an independent vertical menu and each item is set respectively
based on the channel.
With the “CH1 MENU” or “CH2 MENU” menu button pushed down, the system
shows the operation menu of the corresponding channel (see Fig.14).
Fig.14 Channel Setting Menu
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User Manual of PDS Series Oscilloscope
The description of the Channel Menu is shown as the following list: following
form:
Function Menu
Coupling
Channel
Probe
Inverted
1.
Setting
AC
DC
Description
Block the DC component in the input signal.
Unblock the AC and DC components in the
input signal.
Ground
OFF
ON
1X
10X
100X
1000X
OFF
ON
Input signal is interrupted.
Close the measurement channel.
Open the measuring channel.
Choose one according to the probe
attenuation factor to make the vertical scale
reading accurate.
The wave form is displayed normally.
Initiate the wave form inverted function.
Setting Channel Coupling
Taking the Channel 1 for example, the measured signal is a square wave signal
containing the direct current bias. The operation steps are shown as below:
(1). Press the CH1 MENU button and call out the CH1 SETUP menu.
(2). Press the F1 menu selection button and select the Coupling item as “AC” to
set the channel coupling as ac mode, under which the direct current
component in the signal will be blocked.
Then, press the F1 menu selection button again and select the Coupling item as
“DC”, setting the channel coupling as DC mode, under which both dc and ac
components in the signal will be unblocked.
The waveforms are shown as Fig.15 and Fig.16.
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User Manual of PDS Series Oscilloscope
Fig.15 AC Coupling Oscillogram
Fig.16 DC Coupling Oscillogram
2.
Setting the Channel “ON/OFF”
Taking the Channel 1 for example, the operation steps are shown as below:
(1). Press the CH1 MENU button and call out the CH1 SETUP menu.
(2). Press the F2 menu selection button and select the Channel as OFF, with
Channel 1 switched off.
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User Manual of PDS Series Oscilloscope
(3). Press F2 menu selection button again, select the channel as ON, with
Channel 1 is switched on.
3.
Regulate the Attenuation Ratio of the Probe
In order to match the attenuation coefficient of the probe, it is required to adjust
the attenuation ration coefficient of the probe through the operating menu of the
Channel accordingly. If the attenuation coefficient of the probe is 1:1, that of the
oscilloscope input channel should also be set to 1X to avoid any errors presented
in the displayed scale factor information and the measured data.
Take the Channel 1 as an example, the attenuation coefficient of the probe is 1:1,
the operation steps is shown as follows:
(1). Press the CH1 MENU button, access CH1 SETUP menu.
(2). Press the F3 menu selection button and select 1X for the probe.
The Fig.17 illustrates the setting and the vertical scale factor when the probe of
the attenuation coefficient of 1:1.is used.
Fig.17 Regulation of the Attenuation Ratio of the Probe
A List of the Attenuation Coefficients of Probes and the Corresponding Menu
Settings.
Attenuation Coefficient of the Probe
1:1
10:1
100:1
1000:1
Corresponding Menu Setting
1X
10X
100X
1000X
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User Manual of PDS Series Oscilloscope
4.
Setting of Wave Form Inverted
Wave form 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 and get access to the CH1 SETUP menu.
(2). Press the F4 menu selection button and select ON in the Inverted. The wave
form inverted function is initiated.
(3). Press the F4 menu selection button again and select OFF for Inverted item.
The function of wave form inverted is closed off.
For the screen display, see Fig.18 and Fig.19.
Fig.18 Wave Form not inverted
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User Manual of PDS Series Oscilloscope
Fig.19 Wave Form Inverted
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User Manual of PDS Series Oscilloscope
Perform Mathematical Manipulation Function
The Mathematical Manipulation function is used to show the results of the additive
and subtraction operations between Channel 1 and Channel 2, and the FFT operation
of CH1 or CH2.
Taking the additive operation between Channel 1 and Channels 2 for example, the
operation steps are as follows:
1. Press the MATH MENU button and call out the WAVE MATH menu.
2. Press the F3 menu selection button and choose CH1+CH2. The green calculated
wave form M is displayed in the screen; press the F3 menu selection button again, the
wave form M is closed off (see Fig.20).
Fig.20 Wave Form resulted from CH1 +CH2 Mathematical Manipulation
The corresponding FCL (Functional Capabilities List) of the Wave Form
Calculation
Setting
CH1-CH2
CH2-CH1
CH1+CH2
FFT
Description
Subtract the Channel 2 wave form from the Channel 1
wave form.
Subtract the Channel 1 wave form from the Channel 2
wave form.
Add the Channel 1 wave form to the Channel 2.
Waveform of Corresponding FFT operation
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User Manual of PDS Series Oscilloscope
Using FFT function
An FFT breaks down signals into component frequencies, which the oscilloscope uses
to display a graph of the frequency domain of a signal, as opposed to the oscilloscope’s
standard time domain graph. You can match these frequencies with known system
frequencies, such as system clocks, oscillators, or power supplies.
FFT in this oscilloscope can transform 2048 points of the time-domain signal into its
frequency components and the final frequency contains 1024 points ranging from 0Hz to
Nyquist frequency.
The following table describes the FFT menu:
Function Menu
FFT
Source
Setting
Instruction
ON
Turn on FFT function
OFF
Turn off FFT function
CH1
Select CH1 as FFT source
CH2
Select CH2 as FFT source
Rectangle
Window
Blackman
Hanning
Select window for FFT.
Hamming
Format
Zoom
dB
Vrms
Select dB for Format
Select Vrms for Format
*1
Set multiple *1
*2
Set multiple *2
*5
Set multiple *5
*10
Set multiple *10
Taking the FFT operation for example, the operation steps are as follows:
1. Press the MATH MENU button and call out the WAVE MATH menu.
2.
Press the F4 selection button to choose FFT.
3.
Press F1 to turn on/off FFT after entering FFT menu, and please note that FFT is
prohibited in Window setting mode. The green waveform F is shown in the screen
after calculation.
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User Manual of PDS Series Oscilloscope
4.
Press F2 selection button to switch over source channel CH1 and CH2.
5.
Press F3 button to select WINDOW, including Rectangle、Hamming、Hanning and
Blackman.
6.
Press F4 to choose the Format as dB or Vrms.
7.
Press F5 to zoom in or out the wave of the multiple including *1, *2, *5, *10.
8.
Adjust the “Horizontal” knob in horizontal control zone to move the waveform and
the shown frequency of M Pos is the exact frequency of the cursor point in the middle
of spectrum.
9.
Press F1 to choose off to Turn off FFT and then press math menu button to go back
to the second page of wave math.
Selecting an FFT Window
■ The FFT feature provides four windows. Each one is a trade-off between frequency
resolution and magnitude accuracy. What you want to measure and your source signal
characteristics help determine which window to use. Use the following guidelines to select
the best window.
Type
Rectangle
Hamming
Description
This is the best type of window for resolving
frequencies that are very close to the same value
but worst for accurately measuring the amplitude of
those frequencies. It is the best type for measuring
the frequency spectrum of nonrepetitive signals and
measuring frequency components near DC.
Use rectangle for measuring transients or bursts
where the signal level before and after the event are
nearly equal. Also, use this window for
equal-amplitude sine waves with frequencies that
are very close and for broadband random noise with
a relatively slow varying spectrum.
This is a very good window for resolving
frequencies that are very close to the same value
with somewhat improved amplitude accuracy over
the rectangle window. It has a slightly better
frequency resolution than the Hanning.
Use Hamming for measuring sine, periodic, and
narrow band random noise. This window works on
transients or bursts where the signal levels before
and after the event are significantly different.
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User Manual of PDS Series Oscilloscope
Hanning
Blackman
This is a very good window for measuring
amplitude accuracy but less so for resolving
frequencies.
Use Hanning for measuring sine, periodic and
narrow band random noise. This window works on
transients or bursts where the signal levels before
and after the event are significantly different.
This is the best window for measuring the
amplitude of frequencies but worst at resolving
frequencies.
Use Blackman-Harris for measuring predominantly
single frequency waveforms to look for higher
order harmonics.
Fig.21, 22, 23, 24 show four kinds of window function referring to sine wave of
1KHz.
Fig.21 Blackman window
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Fig.22 Hamming window
Fig.23 Rectangle window
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Fig.24 Hanning window
Quick Tips
„ If desired, use the zoom feature to magnify the FFT waveform.
„ Use the default dBV RMS scale to see a detailed view of multiple frequencies, even if
they have very different amplitudes. Use the linear RMS scale to see an overall view
of how all frequencies compare to each other.
„ Signals that have a DC component or offset can cause incorrect FFT waveform
component magnitude values. 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.
Term interpretation
Nyquist frequency: The highest frequency that any Real Time Digital Oscilloscope can
measure is exactly half of the sampling rate under the condition of no mistakes, which is
called Nyquist frequency. If under-sampling occurs when the frequency sampled is higher
than Nyquist frequency, “False Wave” phenomenon will appear. So pay more attention to
the relation between the frequency being sampled and measured.
NOTE:
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User Manual of PDS Series Oscilloscope
In FFT mode, the following settings are prohibited:
1) Window set;
2) change source channel (in CH1 Setup or CH2 Setup menu);
3) XY Format in DISPLAY SET;
4) “SET 50%” (the triggering level at the vertical point of signal amplitude) in Trigger
setting;
5) Autoscale.
Application of VERTICAL POSITION and VOLTS/DIV Knobs
1. The .VERTIVAL POSITION knob is used to adjust the vertical positions of the
wave forms of all Channels (including those resulted from the mathematical
operation).
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 of
all channels (including those obtained from the mathematical manipulation), which
can determine the sensitivity of the vertical division with the sequence of 1-2-
5.The vertical sensitivity goes up when the knob is rotated clockwise and goes down
when the knob is rotated anticlockwise.
3. When the vertical position of the channel wave form is adjusted, the screen shows the
information concerning the vertical position at the lower left corner (see Fig.25).
Fig.25 Information about Vertical Position
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User Manual of PDS Series Oscilloscope
To set the Horizontal system
The HORIZONTAL CONTROLS includes the HORIZONTAL NENU 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.
HORIZONTAL NENU button: with this button pushed down, the screen shows
the operating menu (see Fig.26).
Fig.26 Time Base Mode Menu
The description of the Horizontal Menu is as follows:
Function Menu
Main Time Base
Set Window
Zone Window
Setting
Description
The setting of the horizontal main time base is
used to display the wave form.
A window area is defined by two cursors.
The defined window area for display is
expanded to the full screen.
Main Time Base
Press the F1 menu selection button and choose the Main Time Base. In this case, the
HORIZONTAL POSITION and SEC/DIV knobs are used to adjust the main
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User Manual of PDS Series Oscilloscope
window. The display in the screen is shown as Fig.27.
Fig.27 Main Time Base
Window Setting
Press the F2 menu selection button and choose Set Window. The screen will show a
window area defined by two cursors. In this case, the HORIZONTAL POSITION
and SEC/DIV knobs can be used to adjust the horizontal position and size of this
window area (see Fig.28).
Fig.28 Set Window
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User Manual of PDS Series Oscilloscope
Zoom in
Press the F3 menu selection button and choose Zone Window. As a result, the
window area defined by two cursors will be expanded to the full screen size (see
Fig.29).
Fig.29 Zone Window
To set the Trigger System
When the oscilloscope begins to collect the data and display the wave form depends
on a trigger. Once it is set correctly, the trigger can transfer the unstable display into a
meaningful wave form.
When beginning to collect data, the oscilloscope will collect adequate data to draw the
wave form at the left side of the trigger point at first. It will continuously perform the
data acquisition while waiting for the trigger condition. After a trigger is detected, the
oscilloscope will continuously collect data enough to draw the wave form at the right
side of the trigger point.
One knob and four function menu buttons are included in the trigger control zone.
TRIG LEVEL: Trigger the level control knob and set the signal voltage
corresponding to the trigger point.
SET TO 50%: Set the trigger level as the vertical mid point value of the amplitude of
the trigger signal.
FORCE TRIG: It is a force trigger button for the generation of a trigger signal,
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User Manual of PDS Series Oscilloscope
which is mainly used in the “Normal” and "Single” triggering modes.
SET TO ZERO: Trigger the resetting of the horizontal position.
TRIG MENU: It is a trigger menu button. When it is pressed, an operation menu will
be presented in the screen.
Trigger Control
The trigger control of PDS5022S 、 PDS6042S 、 PDS6062S 、
PDS6062T
Trigger Control: There are two trigger modes----Edge Trigger and Video Trigger.
Each trigger mode uses different function menu. The switching between two modes
can be implemented by pressing the F1 menu selection button.
Edge Trigger: It happens when the trigger input passes through a given level along
the set direction.
Video Trigger: Carry out the field or line video trigger of the standard video signal.
The Edge and Video Trigger menus are described respectively as below:
Edge Trigger
Under the Edge Trigger mode, a trigger happens in the trigger threshold value of the
input signal edge. When the Edge Trigger is selected, a trigger will occur in the
rising or falling edge of the input signal.
The Edge Trigger Menu is shown as Fig.30.
Fig.30 Edge Trigger Menu
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User Manual of PDS Series Oscilloscope
The Edge Trigger Menu is described as below:
Function Menu
Source
Setting
CH1
CH2
EXT
EXT/5
Slope
Mode
Rising
Falling
Auto
Normal
Single
Coupling
AC
DC
HF Rjc
LF Rjc
Description
Set Channel 1 as the trigger signal of the source.
Set Channel 2 as the trigger signal of the source.
Set the external trigger channel as the trigger signal
of the source.
Divide the External Trigger Source by 5 to expand
the external trigger level range.
Set a trigger on the rising edge of the signal.
Set a trigger on the falling edge of the signal.
Collect the wave form even if there is not trigger
condition is detected.
Collect the wave form only when the trigger
condition is fulfilled.
Collect a wave form when a trigger is detected, and
then stop sampling.
Block the direct current component.
Unblock all components.
Block the high-frequency signal and only unblock
the low-frequency component.
Block the low-frequency signal and only unblock
the high -frequency component.
To next menu
Back to previous menu
HoldOff
Holdoff
Reset
100ns~
10s
Turn “TRIG LEVEL” knob to set time slot before
another trigger event
Reset hold time to 100ns.
Holdoff: A time interval before the oscilloscope responses to next trigger signal.
During this Holdoff period, the trigger system becomes “blind” to trigger signals. This
function helps to view complex signals such as an AM waveform. Press Holdoff
button to activate “TRIG LEVEL” knob, then turn it to adjust Holdoff time.
Make such settings in Channel 1 as Rising for Slop, Auto for Mode and DC for
Coupling. The operation steps are as follows:
1. Press the TRIG MENU button and call out the trigger menu.
2. Press the F1 menu selection button and select Edge for Type.
3. Press the F2 menu selection button and choose CH1 for Source.
4. Press the F3 menu selection button and select Rising for Slope.
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User Manual of PDS Series Oscilloscope
5. Press the F4 menu selection button and choose Auto for Mode.
6. Press the F5 menu selection button to next menu.
7. Press the F2 menu selection button and choose DC for Coupling. The display in
the screen is as Fig.31.
8. Press the F3 menu button to select Holdoff, use trig level knob to adjust
Holdoff.
9. Press the F1 menu selection button to back to previous menu.
10. Press the F3 menu selection button and choose Falling for Slope. For the screen
display, see Fig.32.
Fig.31 Wave Form Triggered on the Rising Edge
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User Manual of PDS Series Oscilloscope
Fig.32 Wave Form Triggered on the Falling Edge
Video Trigger
After choosing “Video Trigger”, a trigger is possible in field or line of NTSC, PAL
or SECAM standard video signal.
The operation menu of Video Trigger is shown as Fig.33.
Fig.33 Video Trigger Menu
The description of the Video Trigger menu is shown the following table:
Function Menu
Source
Setting
CH1
CH2
EXT
EXT/5
Description
Set Channel 1 as the trigger signal of the source.
Set Channel 2 as the trigger signal of the source.
Set the external input channel as the trigger signal of
the source.
Divide the external trigger source by 5 and expand
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User Manual of PDS Series Oscilloscope
Sync
Modulation
Line
Field
Odd field
Even field
Designed Line
NTSC
PAL/SECAM
the external trigger level range.
Set a trigger level synchronization in the video line.
Set a trigger level synchronization in the video field.
Set synchronous trigger in the video odd field.
Set synchronous trigger in video even field.
Set synchronous trigger in designer line.
Set synchronization and account choose video
standard.
Go to next menu.
Back to previous menu.
HoldOff
HoldOff
Reset
100ns~10s
Adjust “TRIG LEVEL” key to set time slot before
another trigger event.
Reset hold time to 100ns.
The operation steps for setting Channel 1 in Video Trigger Mode are as below:
1. Press the TRIG MENU button and get access to the trigger menu.
2. Press the F1 menu selection button and choose Video for Type.
3. Press the F2 menu selection button and choose CH1 for Source.
4. Press the F3 menu selection button and choose Field for Sync. The screen display is
shown as Fig.34.
Fig.34 Wave Form Triggered in the Video Field
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The trigger control of PDS7062T、PDS7102T
There are two trigger modes:
alternate trigger and single trigger.
Single trigger: Use a trigger level to capture stable waveforms in two channels
simultaneously
Alternate trigger: Trigger synchronous signals steadily. The two channels could
acquire the waveforms when the CH1 and CH2 are inputting two different frequency
signals.
Single trigger
Single trigger mode have edge trigger and video trigger, you can see different trigger
type for two vertical channels in this menu.
Edge Trigger: It happens when the trigger input passes through a given level along
the set direction.
Video Trigger: Carry out the field or line video trigger of the standard video signal.
The Edge and Video Trigger menus are described respectively as below:
Edge Trigger
Under the Edge Trigger mode, a trigger happens in the trigger threshold value of the
input signal edge. When the Edge Trigger is selected, a trigger will occur in the
rising or falling edge of the input signal.
The Edge Trigger Menu is shown as Fig.35.
Fig.35 Edge Trigger Menu
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User Manual of PDS Series Oscilloscope
Single trigger mode of the Edge Trigger Menu is described as below:
Function Menu
Source
Setting
CH1
CH2
EXT
EXT/5
Type
Slope
Trig mode
Edge
Rising
Falling
Auto
Normal
Single
Coupling
AC
DC
HF Rjc
LF Rjc
Sensitivity
0.2div~1.0div
Holdoff
100ns~10s
Description
Set Channel 1 as the trigger signal of the source.
Set Channel 2 as the trigger signal of the source.
Set the external trigger channel as the trigger
signal of the source.
Divide the External Trigger Source by 5 to
expand the external trigger level range.
Set vertical channel trigger type for edge
trigger.
Set a trigger on the rising edge of the signal.
Set a trigger on the falling edge of the signal.
Collect the wave form even if there is not
trigger condition is detected.
Collect the wave form only when the trigger
condition is fulfilled.
Collect a wave form when a trigger is detected,
and then stop sampling.
Block the direct current component.
Unblock all components.
Block the high-frequency signal and only
unblock the low-frequency component.
Block the low-frequency signal and only
unblock the high-frequency component.
Set trigger sensitivity
Turn “TRIG LEVEL” knob to set time slot
before another trigger event
Holdoff
Reset hold time to 100ns
Reset
Make such settings in Channel 1 as Rising for Slop, Auto for Mode and DC for
Coupling. The operation steps are as follows:
1、Press the TRIG MENU button and call out the trigger menu.
2、Press the F1 menu selection button and select single for Type.
3、Press the F2 menu selection button and select CH1 for source.
4、Press the F2 menu selection button and select CH1 for source.
5、Press the F4 menu selection button and choose Rising for Slope.
6、Press the F5 menu selection button to next menu and press the F2 menu selection
button choose AUTO for Coupling.
7、Press the F3 menu selection button to choose DC for Coupling. The display in the
screen is as Fig.36.
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User Manual of PDS Series Oscilloscope
Fig.36 Wave Form Triggered on the Rising Edge
Video Trigger
The operation menu of Video Trigger is shown as Fig.37.
Fig.37 Video Trigger Menu
The description of the Video Trigger menu is shown the following table:
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User Manual of PDS Series Oscilloscope
Function
Menu
Source
Setting
CH1
CH2
EXT
EXT/5
Type
Video Type
Sync
Modulation
Holdoff
Video
Line
Field
Odd field
Even field
Designed Line
NTSC
PAL/SECAM
100ns~10s
Description
Set Channel 1 as the trigger signal of the source.
Set Channel 2 as the trigger signal of the source.
Set the external input channel as the trigger signal of
the source.
Divide the external trigger source by 5 and expand the
external trigger level range.
Set vertical channel trigger type for video trigger.
Set a trigger level synchronization in the video line.
Set a trigger level synchronization in the video field.
Set synchronous trigger in the video odd field.
Set synchronous trigger in video even field.
Set synchronous trigger in designer line.
Set synchronization and account choose video
standard.
Turn “TRIG LEVEL” knob to set time slot before
another trigger event
HoldOff
Reset hold time to 100ns.
Reset
The operation steps for setting Channel 1 in Video Trigger Mode are as below:
1. Press the TRIG MENU button and call out the trigger menu.
2. Press the F1 menu selection button and choose single for Type.
3. Press the F2 menu selection button and choose CH2 for Source.
4. Press the F3 menu selection button and choose Video for Type.
5. Press the F4 menu selection button and choose Field for Sync. The screen display is
shown as Fig.38.
6. Press the F2 menu selection button and choose CH1 for Source.
7. Press the F4 menu selection button again and choose Line for Slope. The screen display
is shown as Fig.39.
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Fig.38 Wave Form Triggered in the Video Field
Fig.39 Wave Form Triggered in the Video Line
Alternate trigger
During alternate trigger the trigger signal mainly come from two vertical channels and it
can use to observe two irrelevant signals. You can see different trigger type for two
vertical channels in this menu. You can set edge or video.
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Two trigger vertical point display on the screen when set for alternate trigger. (red: CH1,
yellow: CH2)
Alternate trigger menu display is shown as Fig40, Fig41:
Fig40:Alternate edge trigger menu
Fig41:Alternate video trigger menu
The set and edge trigger are the same when trigger type for edge. The set and video trigger
are the same when trigger type for video.
CH1 measures 10K Hz sine wave, CH2 measures a video signal. Alternate trigger set
steps are as follows:
1. Press the TRIG MENU button and call out the trigger menu.
2. Press the F1 menu selection button and select Alternate for Type.
3. Press the F2 menu selection button and select source for CH1.
4. Press the F3 menu selection button and choose Edge for Type.
5. Press the F4 menu selection button and choose Rising for Slope.
6. Press the F5 menu selection button and choose next menu.
7. Press the F2 menu selection button and choose DC for Coupling.
8. Press the F3 menu selection button and display 0.5div of Sensitivity CH1 trigger
complete set.
9. Press the F4 menu button to select Holdoff, use trig level knob to adjust Holdoff.
10. Press the F1 menu selection button and return to the first-level menu.
11. Press F2 menu selection button and choose CH2 for source.
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12. Press F3 menu selection button and choose video for type.
13. Press F4 menu selection button and choose line for sync.
14. Press F5 menu selection button to next menu.
15. Press F2 menu selection button and choose NTSC for modulation.CH2 trigger
complete set.
After Acquire waveform is shown as Fig.42
Fig.42 Alternate trigger waveform
Term interpretation
Trigger modes: There are three kinds of trigger modes available for this oscilloscope,
which is, auto, normal and single.
Automatic trigger mode: The oscilloscope can acquire the waveform without any
triggering condition detected in this mode, in which it will be triggered compulsively
when waiting for a specified period of time without any triggering condition ignited When
an invalid trigger is enforced,the oscilloscope can not keep the waveform in phase.
Normal trigger mode: In this mode, the oscilloscope cannot acquire the waveform till it
is triggered. When there is not any trigger, the oscilloscope will display the origin
waveform without new waveforms captured.
Single shot mode: In this mode, the oscilloscope will detect a trigger and capture a
waveform at each time when the customer presses the RUN/STOP key.
Sensitivity: Trigger circuit including sluggish in order to exclude the influences from
signal noise and get the stable trigger. The sluggish is adjustable among 0.2div~1.0div. It
means when set on 1.0 div trigger circuit don’t have any response to any signal of PK-PK
range ≤1.0div which to exclude the influences from signal noise.
Holdoff: A time interval before the oscilloscope responses to next trigger signal. During
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User Manual of PDS Series Oscilloscope
this Holdoff period, the trigger system becomes “blind” to trigger signals. This function
helps to view complex signals such as an AM waveform. Press Holdoff button to activate
“TRIG LEVEL” knob, then turn it to adjust Holdoff time.
To operate the Function Menu
The function menu control zone includes 6 function menu buttons and 3
immediate-execution buttons: SAVE/RCL, MEASURE, ACQUIRE, UTILITY,
CURSOR, DISPLAY, AUTOSCALE, AUTOSET and RUN/STOP.
To perform Sampling Setup
Press the ACQUIRE button and the menu is displayed in the screen, shown as Fig.43.
Fig.43 ACQU MODE Menu
The description of the Sampling Setup Menu is shown as follows:
Function Menu
Sample
Setting
Peak Detect
Average
Averages
4, 16, 64, 128
Description
General sampling mode.
It is used for the detection of the jamming burr
and the possibility of reducing the confusion.
It is used to reduce the random and don’t-care
noises, with the optional number of averages.
Choose the number of averages.
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Change the ACQU Mode settings and observe the consequent variation of the wave
form displayed.
Fig.44 Peak Detect mode, under which the burrs on the falling edge of the square wave,
can be detected and the noise is heavy.
Fig.45 Common ACQU Mode display, in which no burr can be detected.
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Fig.46 The displayed wave form after the noise is removed under the Average Mode, in
which the average number of 16 is set.
To set the Display System
Push down the DISPLAY button and the menu displayed in the screen is shown as
Fig.47.
Fig.47 Display Set Menu
The description of the Display Set Menu is shown as follows:
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User Manual of PDS Series Oscilloscope
Function Menu
Setting
Vectors
Type
Persist
Dots
OFF
1sec
2sec
5sec
Infinite
YT
Description
The space between the adjacent sampling points in
the display is filled with the vector form.
Only the sampling points are displayed.
Set the persistence time for each sampling point.
Show the relative relation between the vertical
voltage and the horizontal time.
Format
XY
Channel 1 is displayed on the horizontal axis and
Channel 2 on the vertical axis.
Bitmap
The data transmitted in communication are in the
bitmap form.
Carry
Vectors
The data transmitted in communication are in the
vector form.
On
Battery power content symbol on
Battery
Off
Battery power content symbol off
Display Type: With the F1 menu selection button pushed down, you can shift
between Vectors and Dots types. The differences between the two display types can
be observed through the comparison between Fig.48 and Fig.49.
Fig.48 Display in the Vector Form
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Fig.49 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. With the F2 menu selection button, different
persistence time can be chosen: 1sec, 2sec, 5sec, Infinite and Closed. When the
“Infinite” option is set for Persist time, the measuring points will be stored till the
controlling value is changed (see Fig.50).
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Fig.50 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 untriggered sample mode: the data are
displayed as bright spots and the sampling rate is 1MS/s and can not be changed.
The operations of all control knobs are as follows:
„
The Vertical VOLTS/DIV and the Vertical POSITION knobs of Channel 1are
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
Operation steps:
1.
Press the DISPLAY button and call out the Display Set Menu.
2.
Press the F3 menu selection button and choose the form as XY. The display
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format is changed to be XY mode (see Fig.51).
Fig.51 XY Display Mode
To Save and Recall a Waveform
Press the SAVE/RCL button, you can save and call out the wave forms in the
instrument. The menu displayed in the screen is shown as Fig.52.
Fig.52 Wave Form Save Menu
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User Manual of PDS Series Oscilloscope
The description of the Wave Form Save Menu is shown as the following table:
Function Menu
Source
WAVE
Setting
CH1
CH2
MATH
A,B
C,D
Save
CHA
OFF
ON
Description
Choose the wave form to be saved.
Choose the address in or from which the
waveform is saved or can be get access to.
Save the wave form of the source in the
selected address.
Switch on or off the display of the stored
waveform.
Save and recall the wave form
The PDS series oscilloscope can store four wave forms, which can be displayed with
the current wave form at the same time. The stored wave form called out can not be
adjusted.
In order to save the wave form of the channel CH1 into the address A, the operation
steps should be followed:
1.
Press the F1 menu selection button and choose CH1 for Source.
2.
Press the F2 menu selection button and choose A for Wave.
3.
Press the F3 menu selection button and save the wave form.
4.
Press the F4 menu selection button and choose ON for CHA. The stored wave
form A will be displayed in the screen. The voltage level and time base level will
also be shown at the upper left corner of the display area at the same time (see
Fig.53).
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User Manual of PDS Series Oscilloscope
Fig.53 Wave Saving
To perform the Auxiliary System Function Setting
Press the UNTILITY button and the menu is displayed in the screen as Fig.54.
Fig.54 Function Menu
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User Manual of PDS Series Oscilloscope
The description of the Auxiliary Function Menu is shown as the following table.
Function Menu
System Status
Recall Factory
Do Self Cal
Language
Setting
Chinese
English
Description
Display the system function menu.
Call out the factory settings.
Carry out the self-calibration procedure.
Choose the display language of the
operating system.
Perform 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. Then,press the F3 menu selection button and choose “Perform
Self-Calibration”. After confirming it is all set, push down F3 button and choose
“Perform Self-Calibration”, entering the self-calibration procedure of the
instrument.
SYS STAT (System State)
Press the F1 menu selection button and choose “SYS STAT” item. The menu pops up
in the screen as Fig.55.
Fig.55 SYS STAT Menu
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User Manual of PDS Series Oscilloscope
The “SYS STAT” menu is described as the following table:
Function Menu
Setting
Description
Horizontal
Show the horizontal parameter of the channel.
Vertical
Show the vertical parameter of the channel.
Trigger
Show the parameters of the trigger system.
Misc
Show the serial number and edition number.
After entering into the SYS STAT menu, choose the corresponding function, with the
corresponding parameters shown in the screen. If press the F1 menu selection button
and choose the function item “Horizontal”, the Horizontal System State will be
displayed in the screen. Press any other function button and exit from the SYS STAT
menu (see Fig.56).
Fig.56 Horizontal System State
To perform the Automatic Measurement
With the Measure button pressed down, an automatic measurement can be performed.
There are 20 types of measurements and 4 measurement results can be displayed
simultaneously.
The 20 types automatic measurements include frequency, cycle, average value,
peak-to-peak value , root mean square value, Vmax, Vmin, Vtop, Vbase, Vamp,
Overshoot, Preshoot, RiseTime, Fall Time, +Width, -Width, +Duty, -Duty,
DelayA B and DelayA B .
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User Manual of PDS Series Oscilloscope
Press the F1 menu selection button to choose Source or Type menu. You can choose
the channel to be measured from the Source menu and choose the measurement Type
(Freq, Cycle, Mean, PK–PK, RMS and None). The menu is displayed as Fig.57.
Fig.57 Measure Menu
Term interpretation
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.
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.
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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.
Measure
Four automatic measured values can be shown one time at maximum for the wave
form of each channel. Only if the wave form channel is in the ON state can the
measurement be carried out. No automatic measurement can be made for the saved or
the mathematically manipulated wave form, or in the XY or Scan format.
Measure the frequency, the peak-to-peak value of the Channel CH1 and the mean, the
RMS of the Channel CH2, according the following steps:
1.
Press the F1 menu selection button and choose Source.
2.
Press the F2 menu selection button and choose CH1.
3.
Press the F3 menu selection button and choose CH1.
4.
Press the F4 menu selection button and choose CH2.
5.
Press the F5 menu selection button and choose CH2.
6.
Press the F1 menu selection button and choose Type.
7.
Press the F2 menu selection button and choose Freq.
8.
Press the F3 menu selection button and choose Pk-Pk.
9.
Press the F4 menu selection button and choose Mean.
10. Press the F5 menu selection button and choose Cyc RMS.
The measured value will be displayed in the reading window automatically (see
Fig.58).
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Fig.58 Automatic Measurement
To perform the Cursor Measurement
Press the CURSOR button to display the cursor measurement function menu (CURS
MEAS) in the screen, which includes Voltage Measurement and Time
Measurement, shown as Fig.59.
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Fig.59 CURS MEAS Menu
The description of the cursor measurement menu is shown as the following table:
Function Menu
Type
Setting
OFF
Voltage
Time
Source
CH1, CH2
Delta
Cursor 1
Cursor 2
Description
Switch off the cursor measurement.
Display the voltage measurement cursor and
menu.
Show time measures the cursor and menu.
Choose the channel generating the wave form to
which the cursor measurement will be applied.
Read the difference between cursors.
Read the position of Cursor 1 (the Time is read
with reference to the horizontal trigger position
and the Voltage is to the ground point).
Read the position of Cursor 1 (the Time is read
with reference to the horizontal trigger position
and the Voltage is to the ground point).
Cursor Measurement
When carrying out the cursor measurement, the position of Cursor 1 can be adjusted
with the CURSOR1 (VERTICAL POSITION) knob of Channel 1, and that of
Cursor 2 can be adjusted with the CURSOR2 (VERTICAL POSITION) knob of
Channel 2.
Perform the following operation steps for the voltage cursor measurement of the
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User Manual of PDS Series Oscilloscope
channel CH1:
1.
Press CURSOR and recall the Curs Meas menu.
2.
Press the F1 menu selection button to choose Voltage for Type, with two purple
dotted lines displayed along the horizontal direction of the screen, which
indicating CURSOR1 and CURSOR2.
3.
Press the F2 menu selection button and choose CH1 for Source.
4.
Adjust the positions of CURSOR1 and CURSOR2 according to the measured
wave form, with the absolute value of the voltage amplitude difference between
Cursor 1 and Cursor 2 displayed in the increment window. The current position
of Cursor1 is displayed in the Cursor1 window and that of Cursor2 is displayed in
the Cursor2 window (see Fig.60).
Fig.60 Wave Form 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 CURS MEAS menu.
2.
Press the F1 menu selection button and choose Time for Type, with two purple
dotted lines displayed along the vertical direction of the screen, which indicating
Cursor 1 and Cursor 2.
3.
Press the F2 menu selection button and choose CH1 for Source.
4.
Adjust the positions of CURSOR1 and CURSOR2 according to the measured
wave form, with the cycle and frequency of Cursor1 and Cursor 2 displayed in
the increment window. The current position of Cursor1 is displayed in the
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Cursor1 window and that of Cursor2 is displayed in the Cursor2 window (see
Fig.61).
Fig.61 Wave Form of Cursor Measurement
To use Autoscale
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.
The menu is as follows:
Function Menu
Autoscale
Setting
Instruction
OFF
Turn off Autoscale
ON
Turn on Autoscale
Vertical
Follow-up and adjust vertical scale without
changing horizontal setting
Mode
Horizontal
Follow-up and adjust horizontal scale without
changing vertical setting
HORI—VERT
Follow-up and adjust the vertical and
horizontal settings.
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User Manual of PDS Series Oscilloscope
Only show one or two periods
Wave
Show Multi-period waveforms
If you want to measure the two-channel signal, you can do as the follows:
1. Press Autoscale, the function menu will appear on the right of the screen.
2. Press F1 and choose ON.
3. Press F2 and choose Horizontal- Vertical for Mode item.
4. Press F3 and choose
for Wave item.
Then the wave is displayed in the screen, shown as Fig.62.
Fig.62: Autoscale Horizontal- Vertical multi-period waveforms
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Fig.63: Autoscale Horizontal- Vertical mono-period waveform
Note:
1. Entering into Autoscale function and
flicker will be on the top left corner.
(flicker every 0.5 second)
2. At the mode of Autoscale, the oscilloscope can self-estimate “Trigger Type” (Edge,
Video, and Alternate) and “Mode” (Edge, Video). If now, you press “Trigger mode”
or “Type”, the forbidden information will display on the screen.
3. At the mode of XY and STOP status, pressing AUTO SET to enter into Autoscale,
DSO switches to YT mode and AUTO status.
4. At the mode of Autoscale, DSO is always in the state of DC coupling and AUTO
triggering. In this case, the forbidden information will be showing when making
Triggering or Coupling settings.
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 and if
press AUTOSET again, the oscilloscope will enter into Autoscale.
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, below settings will be made forcibly:
(1) The unit will switch from non-main time base to main time base status.
(2) The unit will switch to Peak detection menu while in the state of Average sampling mode.
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To use Executive Buttons
The executive buttons include AUTOSET, RUN/STOP.
AUTOSET
This button is used for the automatic setting of all control values of the instrument to
generate the wave form suitable for observation. Press the AUTOSET button and the
oscilloscope will perform the fast automatic measurement of the signal.
The function items of AUTOSET are shown as the following table:
Function Items
Acquisition Mode
Vertical Coupling
Vertical Scale
Bandwidth
Horizontal Level
Horizontal Sale
Trigger Type
Trigger Source
Trigger Coupling
Trigger Slope
Trigger Level
Trigger Mode
Display Format
Setting
Current
DC
Adjust to the proper division.
Full
Middle
Adjust to the proper division
Current
Show the minimum number of channels.
Current
Current
Mid-point Setting
Auto
YT
RUN/STOP: Enable or disable the waveform sampling.
Notice:
Under the Stop state, the vertical division and the horizontal time base of the
wave form 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 equal to or is less than 50ms, the horizontal
time base can be expanded for 4 divisions downwards.
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Quick Start Guide
Example 1: Measurement of Simple Signals
Observe an unknown signal in the circuit, and display and measure rapidly the
frequency and peak-to-peak value of the signal.
1.
Carry out the following operation steps for the rapid display of this signal:
1.
Set the probe menu attenuation coefficient as 10X and that of the switch in the
probe switch as 10X.
2.
Connect the probe of Channel 1 to the measured point of the circuit.
3.
Push down the AUTOSET button.
The oscilloscope will perform the AUTPSET to make the wave form 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 displayed signals automatically. Complete the
following operations for the measurement of frequency, cycle, and mean and
peak-to-peak value:
1.
Press the MEASURE button to show the automatic measurement function menu.
2.
Press the F1 menu selection button and choose Source, with the Source menu
displayed.
3.
Press the F2, F3, F4 and F5 menu selection buttons and choose CH1.
4.
Press the F1 menu selection button again and choose Type, with the Type menu
displayed.
5.
Press the F2 menu selection button and choose Freq.
6.
Press the F3 menu selection button and choose Period.
7.
Press the F4 menu selection button and choose Mean.
8.
Press the F5 menu selection button and choose Pk-Pk.
Then, the frequency, cycle, mean and peak-to-peak value will present in the menu and
change periodically (see Fig.64).
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Fig.64 Waveform of Automation Measurement
Example 2: Gain of the Amplifier in the Metering Circuit
Set the probe menu attenuation coefficient as 10X and that of the switch in the probe
as 10X.
Connect the oscilloscope CH1 channel with the circuit signal input end and the CH2
channel to the output end.
Operation Steps
1.
Push down the AUTOSET button and the oscilloscope will automatically adjust
the waveforms of the two channels into the proper display state.
2.
Push down the MEASURE button to show the MEASURE menu.
3.
Press the F1 menu selection button and choose Source.
4.
Press the F2 menu selection button and choose CH1.
5.
Press the F3 menu selection button and choose CH2.
6.
Press the F1 menu selection button again and choose Type.
7.
Press the F2 menu selection button and choose Pk-Pk.
8.
Press the F3 menu selection button and choose Pk-Pk.
9.
Read the peak-to-peak values of Channel 1 and Channel 2 from the displayed
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User Manual of PDS Series Oscilloscope
menu (see Fig.65).
10. Calculate the amplifier gain with the following formulas.
Gain = Output Signal / Input signal
Gain (db) = 20×log (gain)
Fig.65 Wave Form of Gain Measurement
Example 3: Capture the Single Signal
The digital storage oscilloscope takes the lead in providing the convenience capturing
of such non-periodic signals as pulse and burr, etc. If you intent to capture a single
signal, you can not set the trigger level and the trigger edge unless you have particular
priori knowledge of this signal. For example, if the pulse 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. If it is uncertain as to the signal, you can make an observation of it in
advance under the automatic or ordinary mode to determine the trigger level and the
trigger edge.
The operation steps are as follows:
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User Manual of PDS Series Oscilloscope
1.
Set the probe menu attenuation coefficient to 10X and that of the switch in the
probe to 10X.
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 button ACQUIRE to display the ACQUIRE Mode menu.
4.
Press the F2 menu selection button and choose Peak Detect.
5.
Press the TRIG MENU button to display the Trigger Mode menu.
The following steps are different for different models.
PDS5022S, PDS6042S, PDS6062S, PDS6062T
6.
Press the F1 menu selection button and choose Edge as the trigger type.
7.
Press the F4 menu selection button and choose Single as the trigger mode.
8.
Press the F3 menu selection button and choose Rising as the slope.
9.
Rotate the LEVEL knob and adjust the trigger level to the mid-value of the
signal to be measured.
10. If the Trigger State Indicator at the top of the screen does not indicate Ready,
push down the RUN/STOP button and start Acquire, waiting the emergence of
the signal in conformity with the trigger conditions. If a signal reaches to the set
trigger level, one sampling will be made and then displayed in the screen. With
this function, any random occurrence can be captured easily. Taking the burst
burr of larger amplitude for example, set the trigger level to the value just
greater than the normal signal level, and then press the RUN/STOP button and
wait. When there is a burr occurring, the instrument will trigger automatically
and record the wave form generated during the period around the trigger time.
With the HORIZONTAL POSITION knob in the horizontal control area in the
panel rotated, you can change the horizontal position of the trigger position to
obtain the negative delay, making an easy observation of the waveform before
the burr occurs (see Fig. 66).
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Fig. 66 Capture the Single Signal
PDS7062T, PDS7102T
6.
Press the F1 menu selection button and choose Single as the trigger type.
7.
Press the F2 menu selection button and choose CH1 as the source.
8.
Press the F3 menu selection button and choose Edge as the trigger type.
9.
Press the F4 menu selection button and choose Rising as the slope.
10. Press the F5 menu selection button to next menu.
11. Press the F2 menu selection button and choose Single as the trigger mode.
12. Rotate the LEVEL knob and adjust the trigger level to the mid-value of the
signal to be measured.
13. If the Trigger State Indicator at the top of the screen does not indicate Ready,
push down the RUN/STOP button and start Acquire, waiting the emergence of
the signal in conformity with the trigger conditions. If a signal reaches to the set
trigger level, one sampling will be made and then displayed in the screen. With
this function, any random occurrence can be captured easily. Taking the burst
burr of larger amplitude for example, set the trigger level to the value just greater
than the normal signal level, and then press the RUN/STOP button and wait.
When there is a burr occurring, the instrument will trigger automatically and
record the wave form generated during the period around the trigger time. With
the HORIZONTAL POSITION knob in the horizontal control area in the panel
rotated, you can change the horizontal position of the trigger position to obtain
the negative delay, making an easy observation of the waveform before the burr
occurs (see Fig.67).
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User Manual of PDS Series Oscilloscope
Fig.67 Capture the Single Signal
Example 4: Analyze the Details of a Signal
Observe the Signal Containing Noises
If the signal is interfered by the noise, the noise may cause a failure in the circuit. For
the analyzing of the noise in detail, please operate the instrument according to the
following steps:
1.
Press the ACQUIRE button to display the ACQU MODE menu.
2.
Press the F2 menu selection button and choose Peak Detect.
In this case, the screen display contains the wave form of a random noise. Especially
when the time base is set as Low Speed, then noise peak and burr contained in the
signal can be observed with the peak detection (See Fig.68).
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Fig.68 Wave Form of the Signal Containing Noises
Separate Noises from the Signal
When analyze the wave form of a signal, you should remove the noise contained in it.
For the reduction of the random noise in the oscilloscope display, please operate the
instrument according to the following step:
1.
Press the ACQUIRE button to show the ACQU MODE menu.
2.
Press the F3 menu selection button and choose Average.
3.
Press the F4 menu selection button and observe the wave form obtained from
averaging the wave forms of different average number.
After the averaging, the random noise is reduced and the detail of the signal is easier
to be observed. Shown as follows, after the noise is removed, the burrs on the rising
and falling edges appear (see Fig.69).
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]
Fig.69 Wave Form of the Noise-Removed Signal
Example 5: Application 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.
Connect the oscilloscope with the circuit and monitor the input and output signals of
the circuit.
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.
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.
5.
Adjust the VOLTS/DIV knob, making the amplitudes of two signals equal in the
rough.
6.
Push down the DISPLAY button and recall the DISP SET menu.
7.
Press the F3 menu selection button and choose XY for Format.
The oscilloscope will display the input and terminal characteristics of the network
in the Lissajou’s graph form.
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User Manual of PDS Series Oscilloscope
8.
Adjust the VOLTS/DIV and VERTICAL POSITION knobs, optimizing the
wave form.
9.
With the elliptical oscillogram method adopted, observe and calculate the phase
difference (see Fig.70).
The signal must be
centered and kept in the
horizontal direction.
Fig.70 Lissajous Graph
Based on the expression sinq =A/B or C/D, where, 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 difference angle can be obtained, namely, q =± arcsin (A/B) or ± arcsin (C/D).
If the principal axis of the ellipse is in I and III quadrants, the determined phase
difference angel should be in 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).
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 PDS5022S, PDS6042S, PDS6062S, PDS6062T
For the trigger in the video field, carry out operations according to the following
steps:
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User Manual of PDS Series Oscilloscope
1.
Press the TRIG MENU button to display the trigger menu.
2.
Press the F1 menu selection button and choose Video for Type.
3.
Press the F2 menu selection button and choose CH1 for Source.
4.
Press the F3 menu selection button and choose Field for Sync.
5.
Adjust the VOLTS/DIV, VERTICAL POSITION and SEC/DIV knobs to
obtain a proper wave form display (see Fig.71).
Fig. 71 Wave Form Obtained from Video Field Trigger
Video Field Trigger for PDS7062T, PDS7102T
For the trigger in the video field, carry out operations according to the following
steps:
1.
Press the TRIG MENU button to display the trigger menu.
2.
Press the F1 menu selection button and choose Single for type.
3.
Press the F2 menu selection button and choose CH1 for Source.
4.
Press the F3 menu selection button and choose Video for Type.
5.
Press the F4 menu selection button and choose Field for Sync.
6.
Adjust the VOLTS/DIV; VERTICAL POSITION and SEC/DIV knobs to
obtain a proper wave form display (see Fig.72).
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Fig.72 Wave Form Obtained from Video Field Trigger
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Troubleshooting
1. In the case of that the oscilloscope is still in the black-screen state without any
display after the power is switch on, perform the following Basic Troubleshooting
hints procedure.
z
z
z
z
Check whether the power connection is connected properly.
Check whether the power switch is pushed down to the designated position.
Restart the instrument after be completed the checks above.
If this product still can not work normally, please get in touch with Lilliput and
we will be under your service.
2. After acquiring the signal, carry out the following operations if the wave form of
the signal is not displayed in the screen.
z Check whether the probe is properly connected to the signal connecting wire.
z Check whether the signal connecting wire is correctly connected to the BNC
(namely, the channel connector).
z Check whether the probe is properly connected with the object to be measured.
z Check whether there is any signal generated from the object to be measured (the
trouble can be shot by the connection of the channel from which there is a signal
generated with the channel in fault).
z Make the signal acquisition operation again.
3. The measured voltage amplitude value is 10 times greater or smaller than the
actual value.
Check whether the channel attenuation coefficient and the attenuation ration of the
probe used in practical application is match.
4. There is wave form displayed, but it is not stable.
z Check whether the Source item in the TRIG MODE menu is in conformity with
the signal channel used in the practical application.
z Check on the trigger Type item: The common signal chooses the Edge trigger
mode for Type and the video signal the Video. Only if a proper trigger mode is
applied, the wave form can be displayed steadily.
z Try to change the trigger coupling into the high frequency suppress and the low
frequency suppress to smooth the high frequency or low frequency noise
triggered by the interference.
5. No Display Responses to the Push-down of RUN/STOP.
Check whether Normal or Signal is chosen for Polarity in the TRIG MODE menu and
the trigger level exceeds the wave form range.
If it is, make the trigger level is centered in the screen or set the trigger mode as Auto.
In addition, with the AUTOSET button pressed, the setting above can be completed
automatically.
6. After the AVERAGE value sampling is set in the ACQU MODE or a longer
duration is set in the DISP MODE, the display rate is slowed down.
It is a normal phenomenon.
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User Manual of PDS Series Oscilloscope
Appendix A: Technical Specifications
Unless otherwise specified, the technical specifications applied are applicable to the
probe with the attenuation switch setting 10X and the PDS series digital oscilloscope.
Only if the oscilloscope fulfill the following two conditions at first, can these
specification standards be reached.
„
This instrument should run for more than 30 minutes continuously under the
specified operating temperature.
„
If the change range of the operating temperature is up to or exceeds 5℃, open the
system function menu and execute the “Self-calibration” procedure.
All specification standards can be fulfilled, except one(s) marked with the word
“Typical”.
Characteristic
Bandwidth
Channel
Mode
Acquisition:
Sample rate
(real time)
Instruction
●25MHz ---- PDS5022S
●40MHz ---- PDS6042S
●60MHz ---- PDS6062S, PDS6062T, PDS7062T
●100MHz ---- PDS7102T
2 + 1 (External)
Normal, Peak detect, Averaging
●100MS/s ---- PDS5022S
●250MS/s
---PDS6042S, PDS6062S, PDS6062T
●500MS/s ---- PDS7062T, PDS7102T
Input coupling
DC,
AC ,
Ground
● 1MΩ±2% , in
Input impedance
Input:
parallel with20pF±5pF
---PDS5022S, PDS6042S,PDS6062S,PDS6062T
●1MΩ±2%,in parallel with 15pF±5pF
--- PDS7062T,PDS7102T
Probe attenuation
1X,10X,100X,1000X
factor
Max. input voltage
300V (PK-PK) (DC + AC PK-PK)
●10S/s~100MS/s---- PDS5022S
Horizontal
System:
Sampling rate
●10S/s~250MS/s
---- PDS6042S, PDS6062S, PDS6062T
●1S/s~500MS/s ---- PDS7062T, PDS7102T
Interpolation
(sin x)/x
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User Manual of PDS Series Oscilloscope
z 5K points on each channel---- PDS5022S
Record length
z 6K points on each channel
---- PDS6042S, PDS6062S, PDS6062T,
PDS7062T, PDS7102T
●5ns/div~100s/div, step by 1~2.5~5
Scanning speed
(S/div)
---- PDS5022S
●5ns/div~100s/div, step by 1~2~5
---- PDS6042S, PDS6062S, PDS6062T,
PDS7062T, PDS7102T
Sampling rate / relay
time accuracy
±100ppm
Single:±(1 interval time+100ppm×
Interval(△T)
accuracy(DC~
100MHz)
Vertical
system:
reading+0.6ns)
Average>16:±(1 interval time +100ppm×
reading+0.4ns)
A/D converter
8 bits resolution (2 Channels simultaneously)
Sensitivity
5mV/div~5V/div(at input)
●±10div(5mV/div~5V/div)----PDS5022S
Displacement
●±50V(500mV~5V),±2V(5mV~200mV)
---- PDS6042S, PDS6062S, PDS6062T,
PDS7062T, PDS7102T
Single bandwidth
Full bandwidth
Low Frequency
≥5Hz (at input, AC coupling, -3dB)
≤14ns----PDS5022S
Rise time
(at input, Typical)
≤8.75ns---- PDS60462S
≤5.8ns---- PDS6062S, PDS6062T, PDS7062T
≤3.5 ns----PDS7102T
DC accuracy
±3%
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User Manual of PDS Series Oscilloscope
The voltage difference (△V) between any two
points on the wave form after averaging the
captured wave forms of more than 16:
●± (5% Reading + 0.05 divisions)
DC accuracy
(average)
----PDS5022S, PDS6042S, PDS6062S,
PDS6062T
●±(3% Reading + 0.05 divisions)
---- PDS7062T, PDS7102T
Edge
Trigger
Type
Edge
trigger
Rising、Falling
Line synchronization, Field synchronization,
Video
Odd field, Even field, Any line
Sensitivity
Adjustable:0.2div~1.0div
Coupling
DC, AC, LF Rjc, HF Rjc
Trigger
Internal
±6 div from the screen center
level
EXT
±600mV
range
EXT/5
±3V
Trigger
Internal
±0.3div
level
EXT
±(40mV + 6% of Set Value)
EXT/5
±(200mV +6% of Set Value)
Accuracy
(typical) :
Horizontal Trigger displacement
Pre-trigger : 655 div
Post-trigger : 4 div
Trigger Holdoff range
100ns~10s
50% level setting (typical)
Input signal frequency ≥50Hz
Trigger
Internal
Peak-peak value of 2div
sensitivity
EXT
400mV
EXT/5
2V
(Video trigger,
typical)
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User Manual of PDS Series Oscilloscope
NTSC, PAL, SECAM (any
Signal system
frequency)
Alternate
CH1 trigger
Edge, Video
trigger
CH2 trigger
Edge, Video
Readout resolution 6 digits
Cymometer
Frequency range
(only for
PDS7062T
and
Single source
PDS7102T)
Cursor
AC coupling, 2Hz to full
bandwidth
z When the triggering mode is
edge triggering, it is a one
channel Cymometer.
z When the triggering mode is
alternating triggering, it is a two
channel cymometer.
z When the triggering mode is
video triggering,the cymometer
will not work..
△V and △T between cursors
Peak-to-peak value, average value, root
mean square value, frequency , period,
Vmax, Vmin,Vtop, Vbase, Vamp,
Automatic
Overshoot, Preshoot,
RiseTime, Fall Time, +Width,
Measurement
-Width, +Duty, -Duty,
DelayA B
Waveform Math
Waveform storage
Bandwidth
Lissajou’s
figure
Communication
port
+, -, Invert,FFT
4 waveforms
Full bandwidth
Phase difference
USB1.1 or RS-232
87
and DelayA B
±3 degrees
User Manual of PDS Series Oscilloscope
General Specifications
Display
Display Type
Display Resolution
Display Color
7.5” color liquid crystal display---- PDS5022S
7.8” color liquid crystal display---- PDS6042S, PDS6062S
8” color liquid crystal display----PDS6062T , PDS7062T,
PDS7102T
640 (horizontal) × 480 (vertical) pixels
256 colors---- PDS5022S,PDS6042S, PDS6062S
65536 colors, TFT screen----PDS6062T,PDS7062T, PDS7102T
Probe compensation
Output voltage (typical)
5V, with the Peak-to-peak value ≥1MΩ
Frequency ( typical)
1KHz square wave
Power
Supply
100-240 VACRMS,50/60Hz,CAT II
Consumption
<15W
Fuse
1A,T class,250V
Battery
Optional
Environment
Working temperature: 0 ℃~ 40 ℃
Storage temperature: -20 ℃~ +60 ℃
Temperature
Relative Humidity
≤ 90%
Operating: 3,000 m
Non-operating: 15,000 m
Height
Cooling Method
Natural convection
Mechanical Specifications
Model
PDS5022S
Weight
1.6kg
Dimension
PDS6042S
PDS6062S
1.7kg
PDS6062T
1.8kg
PDS7062T
PDS7102T
1.7kg
350mm×157mm× 103mm
Interval Period of calibration:
Perform self- calibration to verify that your instrument is operating properly. Selfcalibration performs an internal self- alignment routine to optimize the signal path in the
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User Manual of PDS Series Oscilloscope
oscilloscope. The routine uses internally generated signals to optimize circuits that affect
channel sensitivity, offset and trigger parameters. Let the instrument to warm up for at
least 30 minutes before performing self- calibration. You should perform self- calibration
according to the following recommendations:
• Every 12 months or after 2000 hours of operation
• If the ambient temperature is > 10 °C from the calibration temperature
• If you want to maximize the measurement accuracy
• After experiencing abnormal operation.
• To verify proper operation after repairing
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User Manual of PDS Series Oscilloscope
Appendix B: Package Contents
Standard Accessories:
z
Passive probe: x 2,
z
CD: x 1 (PC link application software).
z
RS232 data line or USB data line: x 1
z
Power line: x 1 (up to the standards of the country in which it is used.)
z
User Manual: x 1
Options:
z
Battery
Appendix C: Maintenance, Cleaning and
Repairing
General Maintenance
Please don't store or put the instrument in the place where the liquid crystal display
will be directly exposed to the sunlight for a long time.
Caution: The instrument or probe should not be stained with the spraying agent,
liquid and solvent to avoid any damage to it.
Cleaning
Check the probe and instrument regularly according to their operating state. Clean the
external surface of the instrument following the steps what shown as below:
1.
Please wipe the dust from the instrument and probe surface with a soft cloth. Do
not make any scuffing on the transparent LCD protection screen when clean the
LCD screen.
2.
Clean the instrument with a wet soft cloth not dripping water, during the period
of which please pay attention to the disconnection of power. It is recommended to
scrub with soft detergent or fresh water. Please don't apply any corrosive
chemical cleaning agent to prevent the instrument or probe from damage.
Warn: Before power on again for operation, it is required to confirm that the
instrument has already been dried completely, avoiding any electrical short circuit or
bodily injury resulting form the moisture.
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User Manual of PDS Series Oscilloscope
Appendix D: Battery Using Guide
Charging the oscilloscope
The lithium battery maybe not be charged when delivery. Please charge the battery for 12 hours to
make sure enough power to supply (the oscilloscope should be turned on during charging) to
oscilloscope. The battery can supply power for 4 hours after being charged completely.
There will have battery power indication show on the top of panel when oscilloscope power supplied
and
imply for different power consumption and when
by the battery. , ,
the power can only supply for 5 minutes maximum.
shows it means
Note:
To avoid superheat of battery during charging, the environment temperature is not allowed to exceed
the permissible value given in technical specification.
Replacing the Lithium Battery Unit
It is usually not required to replace the battery unit. But when it is required to replace it, only qualified
personnel can carry out this operation, and only use the same specification lithium battery.
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