softDSP SDS200A User Manual

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User’s Guide

- SDS 200(A) -

- SoftScope-

PC Based Digital Oscilloscope

www.softDSP.com

This document is being furnished by SOFTDSP CO., LTD.. for information purposes only to licensed users of the SDS 200(A) and is furnished on as “AS IS” basis, that is, without any warranties, whatsoever, expressed or implied.

SDS 200(A) and SoftScope are trademarks of SOFTDSP CO., LTD..

Other brand and product names are trademarks or registered trademarks of the respective holders. Microsoft is a registered trademark and Windows, the Windows logo are registered trademarks of the Microsoft Corporation.

Information in this document is subject to change without notice and does not represent a commitment on the part of SOFTDSP CO., LTD..

FCC NOTICE

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITION: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDERSI RED

OPERATION.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communication. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures :

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit difference from that to which the receiver is connected.

- Consult the dealer of an experienced radio/TV technician for help.

NOTE : The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment.

Certificate of Product Warranty

This product’s warranty, provided by SOFTDSP CO., LTD., covers a period of 1 year from the date of purchase. All faulty parts and/or functions, resulting despite user’s normal use, will be repaired and/or replaced at no charge during the warranty period.

However, if any of the malfunctions are caused by user carelessness, inadequate maintenance, or natural disaster, SOFTDSP will then provide repair and/or replacement services for a fee regardless of warranty period.

Products covered by this warranty are limited to those that are registered at the SOFTDSP headquarter or branch offices and repairs, replacements, or refunds will be issued according to manufacturer’s discretion. When in need of warranty services, the purchaser may visit our headquarter or one of our sales offices with the product or send the product with a detailed description of services required via postal service to any of our sales offices (the purchaser will be responsible for packaging, postage, and any postal insurance). Once repair services are completed, the supplier will return the product to the purchaser (return postage will be paid by the supplier).

However, if we determined required services to be outside the boundaries of the warranty coverage, we will first contact the purchaser and provide an estimate of repair costs and obtain authorization to conduct services before any work is done. In such a case, return postage along with the repair costs will be billed to the purchaser when the repaired product i s returned.

SOFTDSP CO., LTD.. will not be held legally liable for any malfunction resulting from user carelessness, abnormal use (e.g. ignorance of warning instructions, etc.), and/or natural disaster. Even if SOFTDSP CO., LTD. is in receipt of prior notification of such dangers, we will not be held legally liable.

Product Warranty Guide

Please read through the “Precautions for Safety” carefully to obtain a long and safe use of this product.

This product has been processed through careful quality control and testing procedures. Any malfunctions occurring during normal use are covered under the guidelines of the “Certificate of Product Warranty”, which is included in this Manual.

If you experience product malfuncti on, please contact our headquarters or any of our sales offices.

Precautions for Safety

Recommended Usage Environment

 In Operation

Temperature: 0 °C ~ 40 °C

Relative Humidity: 10 ~ 90% , When being used in a fixed state

 Not in Operation

Temperature: 20°C ~ 60°C

Relative Humidity: 5 ~ 95%, When being used in a fixed state

Power Source

 The USB terminal and SDS 200(A) are connected via a USB cable for DC +5V power from the

PC. The product does not require an outsi de power source.

Warning: Be careful not to input excessive power voltage

 The product’s input power capacity is fixed as shown below to prevent electric shock and/or fire.

Please DO NOT use voltage higher than that prescribed below.

<Oscilloscope Max. Voltage Capacity: CH1, CH2, EXT all 42 V

 Please eliminate all unused probes or tester leads so that they do not come in contact with

surrounding high voltage parts.

 Make sure that the PC’s power source is grounded.

pk, AC 30Vrms, DC 60V>

Handling Precautions and After Service

DO NOT open the cover and attempt to repair the product at home. This may cause electric shock and/or other accidents. Please be aware that after service cannot be performed after you’ve opened the cover at home. All repairs, etc. must be performed at an authorized After Service Center.

WARNING!)

 The equipment parts must not be replaced by the user as there is a danger of electric shock. All

repairs must be performed by an authorized technician and/or service center.

 When connecting a probe or signal input cable onto a circuit being tested, the grounded signal

input cable must be connected to t he grounded signal source. In a floating state, the electric current may vary relative to other devices or grounding, thereby damaging equipment, probes, or other measuring devices.

Usage Location

 If the products crevice is exposed to electric conductors (solids or liquids), the product will short

circuit and possibly create danger s of electric shock or fire. Please keep this product aw ay from humidity, water, or dust.

 DO NOT use this product near gas as well as other flammable and/or explosive materials.

 DO NOT place the product o n an unstable cart, stand, or tripod. Such usage creates the dangers of

accident and/or damage to product.

Maintenance and Storage

 The recommended temperature and humidity for equipment storage is 25 °C at 80% humidity.

Minimum System Requirements

T o install and run SoftScope, you should have the following;

Operating System

Windows 98/ME/2000/XP

CPU/Mainboard

Pentium 200MHz , USB equipped mainboard

Memory

32MByte

HDD

20MByte

Graphic Card

Microsoft DirectX supported Screen resolution: 800x600 Color depth: 16bit

Table of Contents

Ch 1. Introduction...............................................................................................1

1. What is SDS 200(A)/SoftScope ?..............................................................1

1. SDS 200(A).........................................................................................1

2. SoftScope ...........................................................................................2

2. Hardware Specification..............................................................................3

3. SoftScope Installation................................................................................5

4. SDS 200(A) Setup.................................. ........ .... .... .... ... ........ .... .... .... .... ..11

5. Setup sds200(a).inf under windows 2000...............................................12

6. Probe Calibration.....................................................................................14

Ch 2. How to use SDS 200(A)/SoftScope.......................................................15

1. Simple Measurement...............................................................................15

2. Basic Operations.....................................................................................17

Change Vertical Scale(Volt/Div)............................................................17

Measurement Using Cursor........................................ ..........................19

Measurement by Icon...........................................................................20

Change Trigger Level & Trigger Point ..................................................23

Single Shot/Stop Mode.........................................................................24

Put Label on The Screen......................................................................24

XY Plot..................................................................................................25

Average.................................................................................................26

Reference .............................................................................................26

Bandwidth Limit(SDS 200A)............................................................... ..27

Invert.....................................................................................................27

Trigger High Frequency Reject(SDS 200A).........................................27

Peak Detect(SDS 200A).......................................................................27

3. Print/Save Waveform......................................................... ......................28

Ch 3. Advanced Technique..............................................................................32

1. Advanced Trigger................................................................ .....................32

Edge Trigger................................................................ ............... ..........32

Logic Trigger(SDS 200)....................................................... ............... ..32

Pulse Trigger.................................................... ................ ............... ......33

Delay Trigger ........................................................... ............... ..............33

2. FFT function.............................................................................................35

3. Math................................................ .........................................................39

Ch 4. Toolbars, Menus, Dialog boxes & Screen Information.......................40

1. Toolbar........................................................................... ................ ..........40

2. Screen Information..................................................................................42

3. Option Dialog Box.............................................................. ......................44

4. Menu................................................... .....................................................45

File........................................................................................................45

View................................................................................. .....................45

Display..................................................................................................45

Channel.................................................................................................46

Horizontal................................................................................ ..............47

Trigger.................................................................. .................................47

Acquire..................................................................................................47

Utile...................................................... .................................................47

Measure................................................................................................48

Help.................................................................. .....................................48

Appendix...........................................................................................................49

Software Calibration....................................................................................49

Chapter 1. Introduction

Ch 1. Introduction

1. What is SDS 200(A)/SoftScope ?

1. SDS 200(A)

SDS 200(A) developed by SOFTDSP CO., LTD. is a portable PC-based Digital Oscilloscope.

High performance

SDS 200(A) has the following features: 200MHz analog bandwidth, 5GS/s equivalent sampling, 100MHz real-time sampling.

USB connected

SDS 200(A) uses USB that supports plug’n play, with 12Mbps communication speed.

Advanced trigger

SDS 200(A) has advanced trigger circuitry so that it can detect many complex signals.

Best performance for your dollar

SDS 200(A) has many features that is comparable to the high speed stand-alone DSOs. But it costs a fraction of the price.

No external power required

SDS 200(A) does not need an external power source, because it is bus-powered from USB.

Chapter 1. Introduction

2. SoftScope

SoftScope is a Wind ows soft wa re that contr ols SDS 200(A ) .

Easy to use

SoftScope is easy to use. It is intuitive and easy to understand.

Big screen

SoftScope uses 500 x 400 screen size.

Various data format processing

SoftScope can save waveform in the following formats: text file, jpg/bmp graphic file, MS excel/word fil e.

Fast screen update rate

SoftScope uses Microsoft DirectX, so that it gives upto screens per second update rate. (under Windows98, Pentium II environment)

Many kinds of measurements

SoftScope has 23 measurement functions.

The analog scope effect

SoftScope uses digital persistence and histogram method so that the display resembles an analog oscilloscope screen.

Chapter 1. Introduction

2. Hardware Specification

Input Max. sample rate Realtime sampling: 100MS/s using one channel, 50MS/s using two

channels

Equivalent sampling: 5GS/s Channels 2 Bandwidth 200 MHz (-3dB)

Single shot bandwidth:50MHz

20MHz bandwidth limiting function is available(SDS 200A) Vertical resolution 9 bits/channel Gain range 10mV ~ 10V/div @ x1 probe

(10mV, 20mV, 50mV, 100mV , 200mV, 500mV , 1V, 2V, 5V, 10V/div

1,2,5 sequence)

100mV ~ 100V/div @ x10 probe

1V ~ 1000V/div @ x100 probe

10V ~ 10kV/div @x1000 probe Range 8 divisions Offset level +/-4 divisions Coupling AC, DC, GND(SDS 200A) Offset increments 0.02 div Impedance 1M ohm DC accuracy +/-3% Input protection 42Vpk (DC + peak AC < 10 kHz, without external attenuation) Display Mode Y-T , X-Y Timebase Timebase range 2ns/div ~ 10s/div

( 2ns, 4ns, 10ns, 20ns, 40ns, 100ns, 200ns, 400ns, 1us,

2us, 4us, 10us, 20us, 40us, 100us, 200us, 40 0us, 1ms,

2ms, 4ms, 10ms, 20ms, 40ms, 100ms, 200ms, 400ms, 1s,

2s, 4s, 10s /div 1-2-4 sequence) Acquisition mode

Equivalent sampling: 2ns/div ~ 4us/div

Realtime sampling: 10us/div ~ 400ms/div

Roll mode: 1s/div ~ 10s/div

Peak detection Range 10 divisions

Chapter 1. Introduction

Pre/Post trigger 0% ~ 1000% Time resolution 200ps Buffer size 10K samples

10K ~ 512K samples(SDS 200A) Trigger T ype Edge trigger: Rising edge, falling ed ge

Logic trigger: A ND, NAND , OR, NOR, XOR, X NOR (SDS 200)

Pulse trigger: Less than width, more than width (10ns ~ 167ms)

Delay trigger: By event (1~16,777,215), by time (10ns ~ 167ms) (SDS

200)

Delay trigger: By event (1~16,777,215), by time (1us ~ 167ms) (SDS

200A) Mode Auto, Normal and Single Autoset Yes Range 10 divisions Trigger level +/-4 divisions Settabillity 0.02 div increments Math Measurements Vp-p, Vmax, Vmin, Vmean, Vrms, Vamp, Vhigh, Vlow, positive overshoot,

negative overshoot, cycle mean, cycle rms, period, frequency, positive

pulse width, negative pulse width, rise time (10%~90%), fall time

(10%~90%), positive duty cyc le, negative duty cycle Cursor Time/frequency difference, voltage difference

Frequency only in FFT mode Math Addition, Subtraction, Multiplication, Division FFT Rectangular, Hanning, Hamming, Blackman Window Physical Interface Universal Serial Bus (USB) Power No external power source required.

Bus-powered from USB Dimensions

5.1" x 4.4" x 1.5" (130 × 112 × 38mm )

Chapter 1. Introduction

3. SoftScope Installation

Caution!) You must install ‘SoftScope’ before using SDS 200(A).

1. While in Windows, insert the installation CD into the CD-ROM drive.

2. The installation should start up automatically. Otherwise in Windows Explorer, switch to the CD-ROM drive and run Setup.exe.

3. The SoftScope Installation is started. Click Next to continue.

4. If you accept the license agreem ent, click Yes to continue.

Chapter 1. Introduction

5. Choose a destination directory. Click Next to continue.

6. Select Language you use. Click Next to continue.

7. Select Graph mode. Click Next to continue.

Chapter 1. Introduction

8. Check the setup information. Click Next to start copying of files.

9. This Status dialog is displayed during copying of files.

10. After Installing SoftScope, the installation program will check the DirectX version of your computer. If it is later than 6.0, the installation program will skip the DirectX Setup.

10.1 If it is earlier than 6.0 or no DirectX installed on your computer, you must reinstall DirectX. if you install from CD-ROM, DirectX Setup will start up. If you download SoftScope_with_DirectX.exe, DirectX will be installed automatically. If you download SoftScope.exe, you must download DirectX also.

Chapter 1. Introduction

10.2 Follow the directions of the DirectX Setup.( In case of installing the files downloaded from internet, you must download and install DirectX!)

11. Select if you reboot or not, you must reboot to use SDS 200(A).

12. When computer restarts, new hardware is found.

13. New hardware search wizard starts. Select ‘Automatically install software’ and then ‘Next’.

Chapter 1. Introduction

14. Set the driver search location to CD-Rom and then ‘Next’.

15. New hardware search wizard starts to search.

16. Select ‘sds 200’ driver and ‘Next’.

Chapter 1. Introduction

17. New hardware wizard installs software.

18. Finish new hardware search wizard.

Chapter 1. Introduction

4. SDS 200(A) Setup

Caution!) SoftScope must be installed before using SDS 200(A). This setup process is done once, at the first time of connection.

1. Connect the A-Type Plug of USB cable to your PC’s USB port.

2. Connect the B-Type Plug of USB cable to SDS 200(A)’s USB port.

3. SDS 200(A) will be detected automatically. (The picture is captured under Windows98 SE environment)

Chapter 1. Introduction

5. Setup sds200(a).inf under windows 2000

When sds200(a).inf file is not be detected automatically, you see the following dialog box.

In this case you must install sds200(a).inf file manually .

1. Choose ‘Search for a suitable driver for my device’ button. Click Next to continue.

2. Specify a location. Click Next t o continue.

Chapter 1. Introduction

3. The sds200(a).inf file is located in SoftSc ope CD-R OM root direc tory. Specify the location by eit her

entering or browsing.

4. sds200(a).inf file is detected aut om atically. Click Next to cont inue.

5. Click Finish.

Chapter 1. Introduction

6. Probe Calibration

SDS 200(A) calibration

1. When manufactured, SDS 200(A) is calibrated manually to obtain maximum performance.

2. You may calibrate SDS 200(A) 5 or 6 months after purchase.

Probe Compensation

1. You must use a probe with more than 200MHz bandwidth to get und istorted signal.

2. Probe should be compensated whenever it is connected for the first time.

3. Connect calibration signal to channel 1, then push AUTOSET.

4. Check the shape of the displayed waveform.

5. Adjust the probe until the displayed waveform is compensated.

Chapter 2. How to use SDS 200/SoftScope

Ch 2. How to use SDS 200(A)/SoftScope

1. Simple Measurement

1. Start SoftScope.

2. SoftScope checks the internal state of SDS 200(A), USB communication status and then read initialization data.

3. Connect channel 1 probe to the calibration terminal.

Push the autoset button.

5. SoftScope sets vertical/horizontal scale automat ica lly.

6. Join dots to a solid line. A. SoftScope displays the data from SD S 200(A) as a dotted line. B. To see the waveform more clearly, push the line-join icon.

Chapter 2. How to use SDS 200/SoftScope

7. Add persistence effect. A. Persistence effect is analog-scope like effect that remembers the history of displayed waveforms. With persistence effect, you can see the more frequent line clea rer. B. Change the persistence effect coefficient.

8. Change the intensity of the waveform. A. Just as in changing the persistence e ffect, you can change the intensity. B. By changing the scroll bar in the menu, you can see a more/less distinct line.

Chapter 2. How to use SDS 200/SoftScope

2. Basic Operations

Change Vertical Scale(Volt/Div)

1. Press the voltage change panel in the screen. (Same method to Channe l 2, Math, Re fer ence )

- Select Volt/Div to change.

- Voltage per scale is changed.

2. Press voltage change icon .

- Shape of cursor is changed to

differs for each channel.)

: Can measure using horizontal and vertical axis at the same time. : Can measure using horizontal axis.(Measure Voltage) : Can measure using vertical axis.(Measure Period and Frequency)

3. Change vertical scale(volt/div) from menu and hot-key. A. Channel Ch1 Setting Volt Scale B. Press the appropriate hot-key.

4. Change AC/ D C setting. A. Push the AC/DC icon to change. B. Push the same button once more to restore.

, meaning Channel 1(When it is a channel 1). (The shape of cursor

Chapter 2. How to use SDS 200/SoftScope

Change Horizontal Scale(Time/Div)

1. Change horizontal scale(time/div) from panel. A.

B. Set the time/div scale with mouse or keyboard. C. Horizontal scale is changed.

2. Change horizontal scale(time/di v) w ith mouse button.

A. B. Cursor is changed to “T”.

C. Push the left/right mouse button to change volt/div. D. With mouse that supports scroll button, change the trigger point.

3. Change horizontal scale(time/di v) from menu and hot-key. A. Channel  Time Scale. B. Press the appropriate hot-key.

Push time scale change icon.

Push time scale change panel.

Chapter 2. How to use SDS 200/SoftScope

Measurement Using Cursor

Measure voltage and time of fset simply using mouse.

Push icon and the cursor is changed to cross .

B. Push left mouse button, and the cross line s appear.

C. Drag the mouse button to the point you want to measure.

D. Release the left mouse button, the voltage difference and time difference will be shown at the status

bar.

E. Push right mouse button, and the cross lines disappear.

Chapter 2. How to use SDS 200/SoftScope

Measurement by Icon

SDS 200(A) has many measurement functio ns.

-Peak-to-peak = Max – Min

Pk-Pk

Max

Min

Amp

Base

Top

-Measured over the entire waveform

-Voltage of the absolute maximum level

-Measured over the entire waveform

-Voltage of the absolute minimum level

-Measured over the entire waveform

-Amp = Base – Top

-Measured over the entire waveform

-Voltage of the statistical minimum level

-Measured over the entire waveform

-Voltage of the statistical maximum level

-Measured over the entire waveform

Upper t hreshold

Middle threshold

Lower threshold

Mean

Cycle mean

RMS

-Voltage of the 90% level from base to top

-Voltage of the 50% level from base to top

-Voltage of the 10% level from base to top

-The arithmetic mean over the entire waveform

-The arithmetic mean over the first cycle in the wa veform

-The Root Mean Square voltage over the entire waveform

Cycle RMS

Positive Overshoot

Negative Overshoot

Period

Frequency

Rise time

Chapter 2. How to use SDS 200/SoftScope

- The Root Mean Square voltage ove r the first cycle in the waveform

- Positive Overshoot = (Max - Top)/Amp x 100 %

- Measured over the entire waveform

- Negative Overshoot = (Base - Min)/Amp x 100 %

- Measured over the entire waveform

- Time to take for the first signal cycle to complete in the waveform

- Measured in seconds

- Reciprocal of the period of the first cycle in the waveform

- Measured in Hertz(Hz)

- Time taken from lower threshold to upper threshold

Fall time

Positive Duty Cycle

Negative Duty Cycle

Positive Pulse Width

Negative Pulse Width

- Time taken from upper threshold to lower threshold

- Positive Duty Cycle = (Positive Pulse Width)/Period x 100%

- Measured of the first cycle in waveform

- Negative Duty Cycle = (Negative Pulse Width)/Period x 100%

- Measured of the first cycle in waveform

- Measured of the first positive pulse in the waveform

- The time between the 50% amplitude points

- Measured of the first

- View next icons

Chapter 2. How to use SDS 200/SoftScope

Upper/Lower Level Setting Set Upper/Lower Ratio Upper/Lower standard value should be given to obtain Rising Time and Falling Time. Upper/lower ratio for overall waveform(%) is set using this function and this value is used to calculate Rising/Falling Time Measurement.

Chapter 2. How to use SDS 200/SoftScope

Change Trigger Level & Trigger Point

1.Set the trigger input source. A. With only one channel on, trigger input source is automatically set to the channel. With 2 channels

on, you can choose trigger input source between the two.

B. Change trigger source from the radio-button.

C. Change trigger source from menu bar.

EX) Trigger  Trigger Source CH1 or CH2

D. Change trigger input source using hot key.

2. Change the trigger level. A.

Move the trigger level icon, you can move the trigger level.

B. Input the trigger level from editor

3. Change the trigger point. A.

B. Input the trigger point from editor.

4. Change the trigger condition.

A. B. Use menu or hot-key . ( Trigger  Trigger Up/D own )

5. Set delay on/off.

B. When delay on, the trigger point separates from the horizontal expansion point. The horizontal

Move the trigger point icon, you can move the trigger point.

Push the trigger up/down icon to change trigger condition.

Push the delay button to set delay on or off.

expansion point stays at the center of the screen.

Chapter 2. How to use SDS 200/SoftScope

Single Shot/Stop Mode

1. Change state to stop or single shot.

A. Push the stop button B. Every operation is the same as in the running state.

2. Single-shot action.

A. Push the single-shot but t o n B. Single-shot is available only in Real Time mode.

C. Push the single-shot button again to pause, SDS 200(A) waits for the trigger signal again.

, SDS 200(A) is in stop state.

to acquire only 1 waveform after the trigger condition you set.

Put Label on The Screen

1. Add a label on the screen.

Push the label icon.

B. The mouse cursor is changed to 'I' shape. C. Push the left mouse button. D. Input string.

E. Change the text/back color. F. Push the confirm button to finish. G. Change the label by clicking the label again.

Chapter 2. How to use SDS 200/SoftScope

XY Plot

XY Plot acts to analyze correlation of data of two channels. Lissajous diagram is displayed in the screen when you use XY Plot, which enables to compare frequencies, amplitudes and phases of counterpart waveform against the reference waveform. This makes it possible to compare and analyze frequency, amplitude and phase between input and output.

Chapter 2. How to use SDS 200/SoftScope

Average

Add acquired waveform as many as the number of average, calculate and display the average. Perform Moving Average for 2 waves to 256 waves and display it in the screen. Average function is applied to real time Mode and ETS Mode, and this function can not be used when role Mode and ETS Mode are turned off.

Reference

Reference waveform can be used after saving the waveforms in the channel 1 or channel 2.

Can work in ‘File’ of menu.

Load Reference(

Save Channel1 As Reference( load it as Reference waveform.

Save Channel1 As Reference(

Reference waveform.

) : load Reference waveform saved in the form of file.

) : Save the curr ent channel 1 as Referenc e waveform and

) : Save the current channel 2 as Reference waveform and load it as

Chapter 2. How to use SDS 200/SoftScope

Bandwidth Limit(SDS 200A)

Eliminate high-frequency element of input signal. Signal over 20MHz is not accepted.

Invert

Invert the phase of input signal.

Trigger High Frequency Reject(SDS 200A)

Eliminate high-frequency element of trigger signal. Signal over 20KHz is not triggered.

Peak Detect(SDS 200A)

In peak detection mode, it accepts minimum and maximum amplitude from 2 continuous intervals an d displays in the screen. Possibility of aliasing can be removed using peak detection function.

Chapter 2. How to use SDS 200/SoftScope

3. Print/Save Waveform

1. Save acquired waveform in the following formats.

A. T ext File B. JPG/BMP File C. Excel F ile D. W ord File

2. Save as text format.

A. In Menu-> File-> ‘Save As DAT’ / T oolb a r’, select ‘Save As DAT’ icon(

B. Save after selecting the file name and location of saving . C. When reading the saved file, it appears as follow s :

3. Save as JPG/BMP format.

A. In ’Menu’ - ‘File’, select ‘Save As JPG’(

B. Save after selecting the file name and location of saving . C. Option for saving of image can be selected in ‘File’ -> ‘Option’.

) or ‘Save As BMP’( ).

Chapter 2. How to use SDS 200/SoftScope

Example) Saved BMP File

4. Copy the image into clipboard.

A. Select Copy from the File menu. B. Waveform is copied into clipboard. C. Paste the image into any program that supports clipboard paste.

Following is the screen for copying the waveform to the image board using clip board.

Chapter 2. How to use SDS 200/SoftScope

5. Transfer the data to MS Excel using ActiveX automation.

A. Select Copy at the File menu. B. MS Excel is activated and then data is transferred by using ActiveX.

6. You can save the data to MS Word using ActiveX automation.

A. In ‘Menu’ -> ‘File’, select ‘Save As Word’. B. MS Word is activated and then data is transferred by using ActiveX.

7. Print the waveform.

Chapter 2. How to use SDS 200/SoftScope

A. Display the waveform, by selecting ‘Print’ / Toolbar printer icon(

B. Display the screen to print by selecting Preview’ / Toolbar preview icon (

Example) Preview screen

) in ‘Menu’-> ‘File’.

) in ‘Menu’-> ‘File’->‘.

Chapter 3. A dvanced Technique

Ch 3. Advanced Technique

1. Advanced Trigger

You can return to normal trigger mode by uncheck Logic, Pulse, Delay check box in the advanced trigger dialog box.

(Normal trigger mode) (Advanced trigger mode)

Edge Trigger

The Edge Trigger generates a trigger when the source signal passes through a specified level in either positive or negative direction, set by the user. This is the same trigger type found in a conventiona l analog oscilloscope. The source, the slope and the level must be set for Edge Trigger operation.

Source: CH1/CH2

-Selects the trigger source.

Slope: Up Edge/Down Edge

-Selects the slope of the source.

Level: +/- 4 vertical screen divisions (Full screen range)

-Selects the level of the input signal where the Edge Trigger is gener ate d. The level is sele cted b y

trigger level pointer at the right-hand side of the display screen and the source is selected from the tool bar radio button.

Logic Trigger(SDS 200)

Chapter 3. A dvanced Technique

The Logic Trigger generates a trigger depending on the logical relation between the state of the two input channels. AND, NAND, OR, NOR, XOR, XNOR Logic Triggers are available and the two input states can be negated if selected.

Ch1 state: High/Low

-Selects the state of channel 1 signal for Logic Trigger input

Ch2 state: High/Low

-Selects the state of channel 2 signal for Logic Trigger input

Logic type: AND, NAND, OR, NOR, XOR, XNOR

-Selects logic type

Pulse Trigger

The Pulse Trigger generates a trigger if the pulse width of the input signal is either less or more than the preset time.

Equation: Less tha n/More than

- Selects whether the trigger is generated when the pulse is less than or more than the preset pulse time

value.

Time: 10ns ~ 167ms

- Selects the pulse width time

Delay Trigger

The Delay Trigger generates a trigger by waiting for a preset time or number of events after a primary trigger from combination of edge, logic and pulse trigger is generated and when the first trig ger from the secondary trigger source is detected.

Equation: By time/By event

- Selects the delay condition eithe r by time or by event.

Delay condition : By Time(1us~167ms), By Event(1~1 6, 777, 2 15 even t) => When operating By event, two inputs of Delay trigger is called Primary trigger and Secondary trigger

Chapter 3. A dvanced Technique

respectively. Due to features of hardware, delay time of 1us exists before first effective input of Secondary trigger comes after satisfying Delay conditions by in pu t of Pr imar y trigger.

Secondary trigger source: CH1/CH2

- Selects the trigger source of the secondary trigger.

Secondary trigger slope: Rising/Falling

- Selects the slope of the secondary trigge r.

Chapter 3. A dvanced Technique

2. FFT function

FFT(Fast Fourier Transform)

This function analyze the frequency component of current waveform.

Pushing the FFT icon, the FFT dialog box appears.

< The voltage component analyzed using FFT is displayed as Volt unit, and the value transformed as log scale or by other computation is displayed as rms(root mean square) value.>

2. The left setting menu of the FFT dialog box.

Channel Sets input source for FFT analysis Window Type Sets digital filter type No. of Freq Bins Sets size of digital filter Scale T ype Sets y scale type as Linear or Log scale Vertical Scale Sets vertical scale Frequency Scale Sets horizontal scale

Chapter 3. A dvanced Technique

If the information is more than the quantity displayed to the display window, more information is displayed by using scroll bar.

3. The above menu bar of the FFT dialog box

:Save the FFT information as various data type

 Save As Text : This Button saves the FFT information as text form ation.  Save As Excel : This Button transfers the FFT information to MS Excel using ActiveX

automation.

 Save As Bmp : This Button saves the FFT information as Bitmap Image.  Save As Jpg : This Button saves the FFT information as Jpeg Image.

: This shows the information of C ursor. Example) This means that frequency of cursor point is 3.6MHz and amplitude is 0.029Volts.

:FFT Cursor On/Off

4. The below information wi ndow of the FFT dialog box

: This shows the information of Harmonics.

: This shows the information about measurement of FFT.

: Amplitude of the fundamental frequency

: Sum of Amplitude of Harmornic(excluding fundamental frequency)

Chapter 3. A dvanced Technique

: Sum of Noise (excluding fundamental frequency, Harmonics, DC and Nyquist bins)

: Total Number of bins

: Total Number of bins of Harmonic : Total Number of bins of Noise.

 SNR(Signal to Noise Ratio) : The ratio of the amplitude of the fundamental frequency to the

Noise.

ENOB(Effective Number of Bits) : The number of bits in an ideal converter that would be required to give the same SNR performance.

 SINAD(Signal to Noise and Distortion) : The ratio of the amplitude of fundamental frequency

to the Noise, but Noise include Harmonics.

 THD(Total Harmonic Distortion) : The ratio of the rms sum of the harmonics to the rms value

of the fundamental.

 SFDR(Spurious Free Dynamic Range) The ratio of the rms signal amplitude to the rms value of

the peak spurious spectral component. The peak spurious component may or may not be a harmonic.

: The rms value of the peak spurious spectral component.

 T ota l Power : The rms value of the sum of all spectral com ponent s.

: Sum of Noise excluding DC and Nyquist.

Chapter 3. A dvanced Technique

5. The FFT display window

:Each green cross points to the Harmonics and red cross points to the cursor. A coordinate axis of X displays the frequency and a coordinate axis of Y displays the amplitude of the frequency. The scrollbar of horizontal and vertical move the base of coordinate axis of X and Y.

Chapter 3. A dvanced Technique

3. Math

Add/Subtract/Multiply/Divide the two waveforms.

Push the Math icon.

Src1/Src2 Sets input source. Operator Sets operation method

2. Select source 1, source 2 and operator from the dialog box. Example) Input1 waveform + Input2 waveform

Chapter 5. Appendix

Ch 4. Toolbars, Menus, Dialog boxes & Screen Information

1. Toolbar

1. Save As Dat -Save as “.dat” file

2. Preview -Previews current waveform

3. Print -Prints current waveform

4. Option -Shows option dialog box

5. Label -Shows label on the screen

6. Cross Cursor -On/Off function of Cross Cursor

7. Horizontal Cursor -On/Off function of Horizontal Cursor

8. Vertical Cursor -On/Off function of Vertical Cursor

9. Persistence -Sets persistence time

10. Intensity -Sets intensity of the waveform

11. Line Join -Joins the dots to lines

12. ETS ON/OFF -Sets ETS(Equivalent Time Sampling) On/Off

13. Run/Stop -Starts waveform acquisitions

-Stops waveform acquisitions

14. Single Shot -Executes a single-shot acquisition

15. Auto Shot -Adjusts the vertical, horizontal, and trigger controls for a

usable display automatically

16. FFT -Shows FFT dialog box

17. Channel 1 On/Off -Channel 1 On/Off

18. Channel 1 AC/DC/GND -Select Channel 1 AC/DC/GND

19. Channel 1 Voltage Scale -Adjust Channel 1 Volt/Div

20. Channel 2 On/Off -Channel 2 On/Off

21. Channel 2 AC/DC/GND -Select Channel 2 AC/DC/GND

22. Channel 2 Voltage Scale -Adjust Channel 2 Volt/Div

23. Math On/Off -Math On/Off

Chapter 5. Appendix

24. Math Voltage Scale -Adjust Math Volt/Div

25. Reference On/Off -Reference On/Off

26. Reference V oltage Scale -Adjust Reference Volt/Div

27. Time/Div -Adjust Time/Div

28.Delay On/Off -Sets trigger delay on

-Sets trigger delay off

29. Trigger Source -Sets trigger source to a specific channel

30. Trigger Up/Down -Triggers on the risin g edge of the signal

-Triggers on the falling edge of the signal

31. Auto/Normal Trigger -Enables free running waveform acquisitions

-Triggers only on valid trigger events

32. Advanced Trigger -Shows advanced trigger dialog box

Chapter 5. Appendix

2. Screen Information

SoftScope has the following windows to show the internal states and settings.

- Display current probe Attenuation (1:1, 1:10, 1:100, 1:1000).

- Display current Volt/Div.

- Click mouse to change set up value.

2. Configuration of Channel 2 Window(

Reference W indow (

- Display current Time/Div.

- Click mouse and change set up value.

When SDS 200(A) is in a delay-on state it shows the current trigger point using time

: Channel 1 Window

) is same as the Channel 1 window .

: Time Window

: Trigger status display wi ndow

) , Math Window( ),

5. A.

B. C.

dimension.

When SDS 200(A) is in a delay-of f stat e it shows the curre nt trigge r point usi n g % scale.

: Tr igger poi n t disp la y w ind ow

The trigger point shows the trigger position in the acquired waveform.

This line shows the whole acquired waveform.

You can see the data currently showing using [ ] mark.

This mark shows the reference point when horizontal scale(time/div) is changed.

: Trigger state selection tool bar

Trigger source selection radio button

Chapter 5. Appendix

Trigger mode (Auto/Normal)

Trigger condition (Up edge/Down edge)

Triger state display window.

Display trigger source, trigger m ode, trigger type, trigger slop and trigger level.

: T rigger sta te of curr en t acquired w aveform A. 'Auto trig'd' - Trigger signal is automatically generated because of no valid triggered signal. B. Waiting – SDS 200(A) is waiting for the incoming trigger. C. Trig'd – Acquired waveform is triggered.

3. Option Dialog Box

Chapter 5. Appendix

Title On -Check to include title on file/print output Title -Use to set the title on file/print o utput Format -Sets color or Black or white type Include -Check to include information Grid View -Sets the graticule type Channel Color Level -Sets color level of waveform

-Check to display waveform in color

Chapter 5. Appendix

4. Menu

File

Name Sub Menu Operation

Save As DA T Save as DAT File format Ctrl +S Save As JPG Save as JPG File format Save As BMP Save as BMP File format Save As Word Saves w ave for m as word file F4 Save As Excel Saves waveform as excel file F5

Hot-key

Option Selects the waveform or screen

option Copy Saves waveform to clipboard Ctrl + C Load Reference Load Reference file. Save Channel1 As Reference Save Channel2 As Reference Preview Previews the waveform F7 Print Prints the waveform Ctrl + P Exit Stops the SoftScope and return Ctrl + X

Save and load channel 1 waveform as

Reference waveform

Save and load channel 1 waveform as

Reference form

View

Name Sub Menu Operation

File Toolbar Shows/Hides File Toolbar Ctrl + F1 Display T oolbar Shows/Hides Display Toolbar Ctrl + F2

Hot-key

Channel Toolbar Shows/Hides Channel Toolbar Ctrl + F3 Run/Stop Toolbar Shows/Hides Run/Stop Toolbar Ctrl + F4 Trigger Toolbar Shows/Hides Trigger T oolbar Ctrl + F5 Utile Toolbar

Display/hide Utile Toolbar

Ctrl + F6

Display

Name Sub Menu Operation

Line Join On/Off Joins the waveform with line Ctrl + J

Hot-key

Chapter 5. Appendix

Persistence Changes the p ersistence effect Ctrl + E

+ Increases intensity of waveform Ctrl + Inc Intensity

_ Decreases intensity of waveform Ctrl + Del Label Edit On/Off Inserts text to waveform Ctrl + L Cross Cursor On/Off On/Off Cross Cursor Ctrl + U Horizontal Cursor On/Off On/Off Horizontal Cursor Vertical Cursor On/Off On/Off Vertical Cursor

Channel

Name Sub Menu Operation Hot-key

Channel1

On/Off On/Off Shift + F1 Voltage Change Volt/Div setting Shift + F5 Probe Attenuation Change Probe Attenuation AC/DC/GND Coupling Change AC/DC/GND Shift + F2

Channel2

Math

Reference

Invert On/Off Change phase of waveform Bandwidth Limit (SDS 200A) On/Off On/Off Shift + F7 Voltage Change Volt/Div setting Shift + F11 Probe Attenuation Change Probe Attenuation AC/DC/GND Coupling Change AC/DC/GND Shift + F8 Invert On/Off Change phase of waveform Bandwidth Limit (SDS 200A) On/Off On/Off Ctrl + M Voltage Change Volt/Div setting Probe Attenuation Change Probe Attenuation Math Option Set Option of Math On/Off On/Off

Voltage Change Volt/Div setting Probe Attenuation Change Probe Attenuation

Bandwidth limit

Chapter 5. Appendix

Horizontal

Name Sub Menu Operation Hot-key

Time/Div Delay On/Off On/Off Delay Ctrl + D

Change Time/Div setting

Ctrl + T

Trigger

Name

Trigger Source CH1 Selects CH1 from trigger source Shift+Ctrl+F1 Trigger Source CH2 Selects CH2 from trigger source Shift+Ctrl+F2 Slope Selects Up/Down from Trigger Up/Down Shift+Ctrl+F3 Auto/Normal Selects Normal/Auto from Trigger Normal/Auto Shift+Ctrl+F4 Advanced Trigger Selects Advanced trigger Shift+Ctrl+F5 Trigger High Frequency Reject On/Off (SDS 200A)

Sub Menu

Operation Hot-key

Eliminate trigger high-frequency

Acquire

Name Sub Menu Operation Hot-key

Run/Stop Starts/Stops acquiring waveform Ctrl + R Single Shot Begins Single Shot operation Ctrl + H Auto Set Changes horizontal/vertical scale for waveform Ctrl + A ETS On/Off On/Off ETS A verage Changes average count number Peak Detection (SDS 200A)

Peak Detection On/Off

Utile

Name Sub Name Operation Hot-key

FFT Shows FFT form Ctrl + F Measurement

XY plot On/Off On/Off XY plot Ctrl + Y Calibration Processes Offset calibartion Shift+Ctrl+F6

Time - Ctrl + F Voltage - Upper/Lower Level Upper/Lower

Chapter 5. Appendix

Measure

Name Sub Menu Operation Hot-key

Voltage Peak to Peak

Maximum Minimum Amplitude Top Base Upper Middle Lower Mean Cycle Mean RMS Cycle RMS Positive Overshoot Negative Overshoot

Time Period

Frequency Rise Time Fall Time Positive Duty Cycle Negative Duty Cycle Positive Pulse Width Negative Pulse Width

Measurement of Peak to Peak Voltage Measurement of Maximum Voltage Measurement of Minimum Voltage Measurement of A mplitude Voltage Measurement of Top Voltage Measurement of Base Voltage Measurement of Upper Voltage Measurement of Middle Voltage Measurement of Lower Voltage Measurement of Mean Voltage Measurement of Cycle Mean Voltage Measurement of RMS Voltage Measurement of Cycle RMS Voltage Measurement of Positive Overshoot Voltage Measurement of Negative Overshoot Voltage Measurement of Period Measurement of Frequency Measurement of Rise T im e Measurement of Fall Time Measurement of Positive Duty Cycle Measurement of Negative Duty Cycle Measurement of Positive Pulse Width Measurement of Negative Pulse Width

Ctrl+Alt + P Ctrl+Alt + X Ctrl+Alt + N Ctrl+Alt + A Ctrl+Alt + T Ctrl+Alt + B Ctrl+Alt + U Ctrl+Alt + M Ctrl+Alt + L Ctrl+Alt + E Ctrl+Alt + C Ctrl+Alt + R Ctrl+Alt + Y Ctrl+Alt + S Ctrl+Alt + G Ctrl+Alt + I Ctrl+Alt + F Ctrl+Alt + V Ctrl+Alt + Z Ctrl+Alt + J Ctrl+Alt + D Ctrl+Alt + W

Ctrl+Alt + H Upper/Lower Level

Set Upper/Lower ratio

Help

Name Sub Name Operation Hot-key

Help Shows help file F1 About Displays about Dialog Box F9

Chapter 5. Appendix

Appendix

Software Calibration

It is necessary for you to calibrate regularly to make the measurements as accurate as possible

1. Short input signal as shown below.

2. Zero calibration dialog box appears.

softDSP SDS200A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual