VOLTCRAFT DDS-3025USB User manual

User’s Manual
DDS-3025USB
ARBITRARY FUNCTION GENERATOR

Content
General safety summary.........................................................................................................1
Introduction.............................................................................................................................2
Chapter 1 Getting started........................................................................................................4
1.1 System Requirements ...............................................................................................5
1.2 Installing Hardware....................................................................................................6
1.3 Installing Software .....................................................................................................9
Chapter 2 Operating Basics..................................................................................................12
2.1 The User’s Interface ................................................................................................13
2.2 The Menu System ...................................................................................................14
2.3 The Waveform Control System................................................................................17
Chapter 3 Understanding Functions......................................................................................18
3.1 Waveform parameter...............................................................................................19
3.2 Waveform Output Control........................................................................................20
3.3 Edition of Arbitrary Waveform..................................................................................21
3.4 Waveform Data Files...............................................................................................22
3.4 Frequency/Counter Measurement...........................................................................23
3.5 Digital Input/Output..................................................................................................24
3.6 Output without PC ...................................................................................................27
3.7 Synchronized output................................................................................................28
3.8 External Trigger Input..............................................................................................29
Chapter 4 Application Examples...........................................................................................31
4.1 Generate the Simple Waveform ..............................................................................32
4.2 Generate Arbitrary Waveform..................................................................................33
Appendix...............................................................................................................................34
Hardware Specification..................................................................................................35
Cleaning and maintenance............................................................................................37

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USER’S MANUAL 1
General safety summary
Please understand the following safety precautions to avoid injuries and damages to the
product or any equipment connected. To be away from possible dangers, please be sure to
follow the regulations.
Only qualified persons are allowed to do the maintenance.
Prevent from fire and any personal damage.
Use Proper Power Cord. Use the power cord authorized in your country only.
Correctly Plug in and Pull out. When the probes or the test leads are connecting to
the voltage source, please do not plug in or pull out.
Ground the product. This product is grounded through the grounding conductor of the
power cord. To avoid electric shocks, the grounding conductors must be grounded
properly before making connections to the input or output terminals of the instrument.
Correctly connect probe. The probes’ ground terminals are at the same voltage level
of the product ground. Do not connect the ground terminals to a high voltage.
Check the ratings of all terminals. To avoid fire or shock hazard, check all ratings and
marks on the product. Follow the user’s guide for detailed rating information before
making connections to the product.
Do not operate the product when the case or panel is removed.
Avoid Circuit Exposure. Do not touch exposed connections and components when
power is on.
If you think the product is broken, do not operate. If you think that this product has
something wrong, please let qualified service persons to check it.
Keep proper ventilation.
Do not operate in wet/damp environment.
Do not operate in flammable and explosive air.
Please keep the product surface clean and dry.

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USER’S MANUAL 2
Introduction
DDS-3025USB Arbitrary Waveform Generator has 1 channel of arbitrary waveform output,
12 Bits output, 1 channel of synchronized signal outputs, 1 channels of Counter/Frequency
Measurement inputs, 4 Bits input and external trigger input. User can edit the waveform
arbitrarily by the mouse or choose the regular waveforms such as Sine, Square, Tri-angle,
Saw-tooth, TTL, White Noise, Gauss Noise, Trapeze, Exponent, AM and FM. The
parameters, such as amplitude, frequency and offset, are also settable. The data format of
DDS-3025USB is completely compatible with that of Tektronix; it can directly read the
waveform data files produced by the Tektronix oscilloscope or Tektronix waveform editor
software and redisplay the waveform. DDS-3025USB adopts the DDS technology so that it
has the advantages of high frequency accuracy, high waveform resolution, high reliability,
and wide software support. It can widely use in the various kinds of electronics labs and it
offers complete interface for second time development to be pointlessly inserted into other
auto-measuring systems.

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USER’S MANUAL 3
Panel introduction
USB Port
USBXI Port
External Trigger
OUTPUT
Synchronized
Signal Output
Counter/Frequency
Inputs
Digital IN Pins
Control Pin
Digital Out Pins
GND
GND

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Chapter 1 Getting started
This chapter focuses on the following topics:
System Requirements
Installing hardware
Installing software

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1.1 System Requirements
Minimum System Requirements
Operating System
Windows XP/Vista/Win 7/Win8
Memory
128MB
Graphic Card
Microsoft DirectX supported
Screen resolution: 1024x768
Color depth: 16bit
Recommended System Requirements
Operating System
Windows XP/Vista/Win 7/Win 8
Memory
256MB
Graphic Card
Microsoft DirectX supported
Screen resolution: 1024x768
Color depth: 16bit

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USER’S MANUAL 6
1.2 Installing Hardware
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 the device’s USB port.
3. New hardware is found.
4. New hardware search wizard starts.

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5. Choose the correct directory of the driver through the browser or search in the CD driver.
6. New hardware wizard installs software.

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7. Finish new hardware search wizard.

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1.3 Installing Software
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 DDS-3025USB Installation is started. Click 'Next' to continue.

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USER’S MANUAL 10
4. Choose a destination directory. Click 'Next' to continue.
5. Check the setup information. Click Next to start copying of files.

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6. This Status dialog is displayed during copying of files.
7. The installation is complete.

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Chapter 2 Operating Basics
This chapter focuses on the following topics:
The User’s Interface
The Menu System
The Waveform Control System

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USER’S MANUAL 13
2.1 The User’s Interface
DDS-3025USB provides users a simple and full-featured interface so that users do not have
to spend a lot of time to learn.

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2.2 The Menu System
1. File
New: Create a new device
Close: Close current device
Open CSV…: Open a “CSV” file
Save CSV…: Save a “CSV” file
Save CSV As…: Save a “CSV” file as other name
Print…: Print the current waveform
Print Preview: Preview the current waveform
Print Setup: Configure the print setup
Exit: Exit DDS-3025USB
2. Edit
Points Edit: Draw the waveform after click the command of Arb.
Zoom In: Zoom in the waveform.
Zoom Out: Zoom out the waveform.

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3. Wave Parameter
Square: Show square waveform.
Ramp: Show ramp waveform.
Trapezia: Show trapezia waveform.
Exponent: Show exponent waveform.
AM/FM: Show AM/FM waveform.
4. Digital IO
Pattern Generator: Set the Digital out pin as pattern generator.
Programmable Output: Set the Digital out pin as programmable output.
Output Set: Show Digital out setup dialog.
5. Display
Background Color: Set background color.
XY Line Color: Set XY color.
Curve Color: Set curve color.
Cursor Color: Set cursor color.
Wave Number: Set the number of periods displayed.
Show/Hide Control: Show or hide the control panel.

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6. Utility
Sweep: Show the sweep dialog.
Open Output Power On: Save the current waveform to DDS-3025USB, and generate
the waveform when the DDS-3025USB powers on.
Close Output Power On:Stop generates the waveform when the DDS-3025USB
powers on.

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2.3 The Waveform Control System
Click Menu “Display”->”Show/Hide control”, you can show or hide the waveform control panel.
You can change the waveform parameter such as frequency, amplitude, Y Offset, or phase.
Also, it includes the frequency/counter measurement system.

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Chapter 3 Understanding Functions
This chapter focuses on the following topics:
Waveform parameter
Waveform output control
Edition of Arbitrary Waveform
Counter/Frequency Measurement
Waveform data files
Digital Input/Output
Output Power On
Synchronized Output
External Trigger Input