Rigol DG2041A, DG2021A User guide

User’s Guide RIGOL

Publication number UGB02101-1110 Oct 2008

DG2000 Series Function/Arbitrary Waveform Generator

DG2041A/DG2021A

RIGOL

z © 2006 RIGOL Technologies, Inc. All Rights Reserved z RIGOL products are protected by patent law in and outside of P.R. China. z Information in this publication replaces all previously corresponding material. z RIGOL Technologies, Inc. reserves the right to modify or change part of or all

the specifications and pricing policies at company’s sole decision.

NOTE: RIGOL is registered trademark of RIGOL Technologies, Inc.

User’s Guide for DG2000 Series

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Safety Notices

Review the following safety precautions carefully before operating the instrument to avoid any personal injury or damage to the instrument or products connected to it.

To avoid the potential hazards, it is necessary to use the instrument in the manner specified in this user guide.

The instrument should be serviced only by qualified personnel.

Avoid Fire or Personal Injury

Use proper power line. Only the special power line of the products approved by

the State should be used.

Insert or draw properly. Do not insert draw when the probe and the testing lead are connected with the power.

Ground the instrument. This generator is grounded through the protective terra conductor of the power cord. To avoid electric shock, the grounding conductor must be connected to the earth ground. Make sure that the instrument is properly grounded before connecting the input or output terminals.

Observe All the Ratings of the Terminal. To avoid fire or shock, observe all the ratings and symbols that marked on the instrument. Read the user guide carefully before making connections to the instrument.

Do not operate without Covers. Do not operate your generator with covers or panels removed.

Avoid Circuit or Wire exposed. Do not touch the exposed connections or components when the power is on.

Do not operate with suspected failures. If you suspect there is damage with this product, you have it inspected by qualified service personnel authorized by RIGOL before further operations.

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User’s Guide for DG2000 Series

Provide Proper Ventilation.

Do not operate in wet/damp conditions.

Do not operate in an explosive atmosphere.

Keep the product’s surfaces clean and dry.

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User’s Guide for DG2000 Series

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Safety Terms and Symbols

Terms in this guide. These terms may appear in this manual:

!

Terms on the product. These terms may appear on the product:

DANGER indicates an injury or hazard that may be immediately happen.

WARNING indicates an injury or hazard that may be not immediately happen.

CAUTION indicates that a potential damage to the instrument or other property

might occur.

Symbols on the product. These symbols may appear on the instrument:

Hazardous Voltage

WARNING: Warning statements indicate the conditions or practices that could result in injury or loss of life.

CAUTION: Caution statements indicate the conditions or practices that could result in damage to this product or other property.

!

Refer to the Instructions

Protective Earth Ground

Chassis Ground

Earth Ground

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User’s Guide for DG2000 Series

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V

The Introduction of DG2000 Series

This manual covers the following four types of DG2000 Series Function/ Arbitrary Waveform Generators: DG2041A、DG2021A.

RIGOL DG2000 Series Function/ Arbitrary Waveform Generator adopt the direct digital synthesizer (DDS) technology, which can provide stable, high-precision, pure and low distortion sine signal. It can also provide 40MHz square waveform with fast rising and falling edges. Its combination of excellent system features, easiness in usage and versatile functions makes this generator a perfect solution for your job now and in the future.

DG2000 Series Function/ Arbitrary Waveform Generator have clear and simple Front-Panel. The user-friendly panel layout and instructions, versatile terminals, direct graph interface, built-in instructions and help system have greatly simplified the operation process. Thus, users do not have to spend a great deal of time learning and familiarizing the operation of the generator before they can use it proficiently. The built-in AM, FM, PM, PWM and FSK modulating functions generate modulated waveform at ease, without the help of a separate modulating source. The USB I/O, LAN and GPIB are the standard configuration. Remote instructions meet the SCPI specification requirements.

From the characteristics and specifications given below, you will understand how DG2000 can satisfy your measurement requirements.

z 16+2 channels digital output module (optional) together with the analogue

channel can rebuild the most commonly used mixed signal in daily practice.

z DDS technology provides precise, stable and low distortion output signal. z 10 standard waveforms:

Sine, Square, Ramp, Pulse, Noise, Sinc, Exponential Rise, Exponential Fall, Cardiac and DC.

z 100MSa/s sampling rate, enable to edit arbitrary waveform with 14-bit, 512K

points.

z Frequency characteristics:

Sine/ Square: 1µHz to 40 MHz Ramp: 1µHz to 400 kHz

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Pulse: 500µHz to 16MHz White Noise: 20MHz bandwidth (-3dB) Arbitrary waveform: 1μHz to 12MHz

z Amplitude range: 2mV

pp to 10Vpp (50 Ω)

pp to 20Vpp (High Z)

40mV

z Abundant modulation function, various modulated waveform: AM, FM, PM, PWM

and FSK.

z Linear, logarithm Sweep and Burst mode. z Abundant I/O: External Modulation Source, External 10 MHz Reference Input,

External trigger source, waveform output, synchronous digital signal output, Internal 10 MHz Reference output.

z Support USB storage device; store and read waveform configure parameters or

the edited arbitrary waveform with USB devices. System Updating could also be performed by using USB devices.

z Remote control is realized by using the LAN. z Standard interface: USB Host & Device, RS-232, GPIB. z Graph interface which shows the signal setting directly. z Chinese/English user interface. z Embedded Chinese/English Help System. z Support Chinese/English Input.

Note:

All the specifications described in this guide are according to DG2041A, if you need to know the particular specifications about the other type, please see “Specifications” in Chapter 5.

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User’s Guide for DG2000 Series

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Content

Safety Notices ...........................................................................................II

The Introduction of DG2000 Series ............................................................. V

Chapter 1 Getting Started ..................................................................... 1-1

General Inspection.................................................................................. 1-2

Handle Adjustment ................................................................................. 1-3

The Front/Rear Panel .............................................................................. 1-4

The DG2000 User Interface ..................................................................... 1-7

To Set a Waveform ................................................................................. 1-8

To Set Modulate/ Sweep/Burst................................................................1-11

To Set Trigger/Output ............................................................................1-13

To Use Digital Input ...............................................................................1-14

To Use Store/Utility/Help Function...........................................................1-15

Chapter 2 Operating Your Generator .................................................... 2-1

The Menu/Graph Mode............................................................................ 2-2

To Set Sine Signals ................................................................................. 2-3

To Set Square Signals ............................................................................. 2-7

To Set Ramp Signals ..............................................................................2-10

To Set Pulse Signals...............................................................................2-12

To Set Noise Signals ..............................................................................2-16

To Set Arbitrary Signals..........................................................................2-17

To Generate the Modulated Waveform ....................................................2-30

To Generate Sweep ...............................................................................2-42

To Generate Burst..................................................................................2-45

To Store and Recall................................................................................2-49

To Set the Utility Function ......................................................................2-58

How to Use the Built-in Help System .......................................................2-81

Chapter 3 Application & Examples ........................................................ 3-1

Example 1: To Generate a Sine Wave....................................................... 3-1

Example 2: To generate a Square Wave ................................................... 3-2

Example 3: To generate a Ramp Wave..................................................... 3-3

Example 4: To generate a Pulse Wave...................................................... 3-4

Example 5: To Generate a Noise Wave..................................................... 3-6

Example 6: To generate Arbitrary Waveform............................................. 3-7

Example 7: To Create an Arbitrary Waveform ........................................... 3-8

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Example 8: To Generate an AM Waveform .............................................. 3-10

Example 9: To Generate an FSK Waveform ............................................. 3-12

Example 10: To generate a PWM Waveform............................................ 3-14

Example 11: To generate a Linear Sweep ............................................... 3-16

Example 12: To generate a Burst Waveform ........................................... 3-18

Chapter 4 Prompt messages & troubleshooting ................................... 4-1

Prompting Messages................................................................................ 4-1

Troubleshooting .................................................................................... 4-17

Chapter 5 Specifications ....................................................................... 5-1

Specifications.......................................................................................... 5-2

General Specifications.............................................................................. 5-7

Chapter 6 Appendix............................................................................... 6-1

Appendix A DG2000 Series Accessories..................................................... 6-1

Appendix B Warranty............................................................................... 6-2

Appendix C General Care and Cleaning ..................................................... 6-3

Appendix D Contact RIGOL ..................................................................... 6-4

Index ........................................................................................................... I

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User’s Guide for DG2000 Series

Chapter 1 Getting Started

This chapter covers the following topics:

General Inspection



Handle Adjustment



The Front/Rear Panel



The DG2000 User Interface



To S et a Wa ve fo rm



To Set Modulate/ Sweep/Burst



To Set Trigger/Output



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To Use Digital Input



To Use Store/Utility/Help Function



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General Inspection

When you get a new DG2000 Series Function/ Arbitrary Waveform Generator, you are suggested to take the following steps to inspect the instrument.

1. Inspect the shipping container for damage.

If there are damages in the packing or foam, keep them until the whole machine and the accessories passing the electric and mechanical testing.

2. Check the accessories.

Accessories supplied with the instrument are listed in chapter 6 "Appendix A: DG2000 Series Accessories". If the contents are incomplete or damaged, please contract the local selling representative of RIGOL.

3. Inspect the instrument.

In case any mechanical damage or defect, or if the instrument does not operate properly or pass performance tests, notify your RIGOL Sales Representative. If the shipping container is damaged, or the cushioning materials show signs of stress, notify the carrier of your RIGOL sales office. Keep the shipping materials for the carrier’s inspection. RIGOL offices will arrange for repair or replacement at RIGOL’s option without waiting for claim settlement.

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Handle Adjustment

To adjust the handle position of DG2000 Function/ Arbitrary Waveform Generator, please grip the handle by the sides and pull it outward. Then, make the handle rotate to the desired position. The operating methods are shown below in figure 1-1 and figure 1-2.

Figure 1-1 The Method of Adjusting the Handle

Figure 1-2 The Viewing Positions and Carrying Position

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The Front/Rear Panel

When you get a new DG2000 Series Function/ Arbitrary Waveform Generator, first you need to know how to operate the front/ rear panel correctly. This chapter will make a brief introduction and description for the operation and functions of the Front/ Rear Panel.

The Front Panel at a Glance

The DG2000 Series Function/ Arbitrary Waveform Generator has clear and simple front panel. See figure 1-3 and figure 1-4. The Front Panel has a knob, functional keys and menu buttons. The 6 grey buttons below the screen are menu buttons, with the help of which, you can choose different options on the current menu. The rests are the functional keys, with which you can enter different function menus or obtain specific functional applications directly.

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Figure 1-3 The Front Panel of DG2000 Series

User’s Guide for DG2000 Series

USB Host

Mode/Function

On/Off

Switch

Graph/Text

Mode Key

Menu

Operation

SoftKeys

Waveform

Selection

Keys

Mode/Function

Buttons

Number

Keys

Direction

Key

Output

Control

Trigger

Control

Figure 1-4 The Front Panel Operation Instruction of DG2000 Series

NOTE: The [Output] connector and [Sync] connector on the front panel

!

can be only used for the signal output. If they are used for input, it may make the circuit burned and the instrument in trouble.

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Knob

Output

Connector

Sync

Output

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The Rear Panel at a Glance

T

Trig/

Figure 1-5 The Rear Panel of DG2000 Series

10MHz

Reference Input

Term i na l

10MHz

Reference Output

Term i na l

10/100

Ethernet

GPIB

(IEEE 488)

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Power Socket

Modulation Input

erminal

Digital

Output

Figure 1-6 The Rear Panel Operation Instruction of DG2000 Series

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External

FSk/Burst

User’s Guide for DG2000 Series

USB Device Main Power

RS-232

Switch

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The DG2000 User Interface

DG2000 Series Function/ Arbitrary Waveform Generator provides two display modes: Menu and Graph. Under the Menu display mode, the display interface is divided into 4 parts: state, waveform icon, operation menu, and parameter display. See figure 1-7. Under the Graph display mode, you can check the current waveform parameters in the graphics. The display interface is also divided into 4 parts: state, parameter display, display menu button and waveform display. See figure 1-8. The operation menu will appear at the bottom of the screen when you press any menu button. These two display modes can be switched to each other by pressing the /A button.

State

Waveform

Operation

Menu

Parameter

Figure 1-7 The Interface Instruction of Menu Mode

Display Menu

State

Parameters

button

Parameter

Display

Waveform

Display

Figure 1-8 The Interface Instruction of Graph Mode

Note：

The signs for the buttons in this manual are the same as the panel buttons. Please note that the signs for the functional buttons on the operation panel are represented by squared words, such as Sine, which represents the transparent functional key with Sine on it on the front panel, while the menu buttons are represented by shadow words such as Frequency , which means the “Frequency” option in the Sine menu.

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To Set a Waveform

At the left of the operation panel, there is a set of buttons with waveform icon. See figure 1-9. The exercise below will help you familiarized with the waveform selection settings. The instructions of the waveform setting are all carried out in the Menu Display Mode.

Figure 1-9 The Waveform Selection Buttons

1. Press Sine button, and the waveform icon turns into Sine with a “Sine” typeface

in the state area. DG2000 Series Generator can generate Sine signal with frequency from 1μHz to 40MHz. By setting Frequency/Period, Amplitude/ High Level, Offset/ Low level, the Sine signal with different parameters can be generated.

Figure 1-10 The Sine Waveform in the Menu Display Mode

As shown in figure 1-10, the default signal parameters are: 1kHz Frequency, 5.0

pp Amplitude and 0Vdc Offset.

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2. Press Square button, and the waveform icon turns into Square with a “Square”

typeface in the state area. DG2000 Series Generator can generate Square signal with frequency from 1μHz to 40MHz and variable duty cycle. By setting Frequency/Period, Amplitude/ High Level, Offset/ Low level, and Duty Cycle, the Square signal with different parameters can be generated.

Figure 1-11 The Square Waveform in the Menu Display Mode

As shown in figure 1-11, the default signal parameters are: 1kHz Frequency, 5.0

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Vpp Amplitude, 0 Vdc Offset and 50% Duty Cycle.

3. Press Ramp button, and the waveform icon turns into Ramp with a “Ramp”

typeface in the state area. DG2000 Series Generator can generate Ramp signal with frequency from 1μHz to 400 kHz and variable Symmetry. By setting Frequency/Period, Amplitude/ High Level, Offset/ Low level, and Symmetry, the Ramp signal with different parameters can be generated.

Figure 1-12 The Ramp Waveform in the Menu Display Mode

As shown in figure 1-12, the default signal parameters are: 1kHz Frequency, 5.0

pp Amplitude, 0 Vdc Offset and 50% Symmetry.

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4. Press Pulse button, and the waveform icon turns into Pulse with a “Pulse”

typeface in the state area. DG2000 Series Generator can generate Pulse signal with frequency from 500μHz to 16MHz and variable Pulse Width and Edge Time. By setting Frequency/Period, Amplitude/ High Level, Offset/ Low level, Pulse Width and Edge Time, the Pulse signal with different parameters can be generated.

Figure 1-13 The Pulse Waveform in the Menu Display Mode

As shown in figure 1-13, the default signal parameters are: 1kHz Frequency, 5.0

pp Amplitude, 0 Vdc Offset, 20% Duty Cycle and 50ns Edge Time.

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5. Press Noise button, and the waveform icon turns into Noise with a “Noise”

typeface in the state area. DG2000 Series Generator can generate Noise signal with Band Width up to 20MHz. By setting Amplitude/ High Level, Offset/ Low level, the Noise signal with different parameters can be generated.

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Figure 1-14 The Noise Waveform in the Menu Display Mode

As shown in figure 1-14, the default signal parameters are: 5.0 V

dc Offset.

0 V

pp Amplitude and

6. Press Arb button, and the waveform icon turns into Arb with an “Arb” typeface in

the state area. DG2000 Series Generator can generate repeatable arbitrary waveform signals with at most 512K points and 12MHz frequency. By setting Frequency/Period, Amplitude/ High Level, Offset/ Low level, arbitrary waveform signals with different parameters can be generated.

Figure 1-15 The Arbitrary Waveform in the Menu Display Mode

As shown in figure 1-15, the default Exponential Rise Signal parameters are: 1kHz Frequency, 5.0 V

pp Amplitude and 0 Vdc Offset.

7. Press Digital button, and enter the interface of Logic Signal Output Module. For

the detailed explanations, please refer to User’s Guide of DG2000 Logic Signal Output Module.

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To Set Modulate/ Sweep/Burst

As shown in figure 1-16, there are three buttons on the front panel, which are used for Modulating, sweeping and bursting settings. The instructions below will help you familiarize with the setting of these functions.

Figure 1-16 The Modulate/ Sweep/ Burst button

1. Press Mod button, and a Modulated waveforms will be generated.

Parameters are set by using the menu buttons. The modulated waveform can be changed by changing the parameters such as Type, Internal/External Modulation, Depth, Frequency, Waveform, etc. DG2000 Series can modulate waveform by using AM, FM, PM, PWM and FSK. Sine, Square, Ramp or Arbitrary waveforms can be modulated (Pulse, Noise and DC cannot be modulated).

Figure 1-17 The Modulated Waveform in the Menu Display Mode

2. Press Sweep button, Sine, Square, Ramp or Arbitrary waveform can be swept

(Pulse, Noise and DC can not be swept). In the Sweep Mode, DG2000 Series generate signal with variable frequencies.

Figure 1-18 The Sweep Waveform in the Menu Display Mode

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3. Press Burst button, Burst for Sine, Square, Ramp, Pulse or Arbitrary waveform can

be generated (Noise can only be used in the gated Burst).

Figure 1-19 The Burst Waveform in the Menu Display Mode

Term Explanation Burst：Output Waveforms with set cycle times

Burst can last for certain times of waveform cycle (N-Cycle Burst) or be controlled by external gated signals (Gated Burst). Burst applies to all kinds of waveforms, but noise can only be used in gated burst. Generally it is called BURST function within every Signal Generator.

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To Set Trigger/Output

As shown in figure 1-20, there are two buttons on the right side of the operation panel, which are used to set Trigger and Output Control. The instruction below will help you familiarize with these functions.

Figure 1-20 The Trigger/Output Button

1. Press Trigger Button, choose internal/external or manual Trigger (Manual Trigger

can only be used in Sweep and N-Cycle Burst)

z The default setting for Trigger is “Internal”. In this mode, when the Sweep or

Burst Mode is also selected, the Generator will continuously generate burst. At this time, press Trigger button, the instrument will shift from the “Automatic” Trigger mode into “Manual” Trigger mode.

z When the generator uses the” External” Trigger Mode, if the Sweep or the

Burst Mode is selected, the signal will be continuously generated. At this time, press Trigger button, the instrument state will not change, and it will show the information “The instrument has already been triggered”.

z Every time you press the Trigger button, “Manual” Trigger will start a sweep

or generate a burst. Press the button again, and the generator will be triggered again.

2. Press Output Button, activate or deactivate the output signal.

If an overload message is shown, disconnect the external equipment from the output terminals and press Output button, reactivate the output terminal.

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To Use Digital Input

As shown in figure 1-21, there are two groups of buttons on the operation panel, which are the direction button, the knob and the keypad. The instruction below will help you familiarize with the Digital Input Function.

(1) Direction Key and the Knob (2) Keyboard

Figure 1-21 The Front Panel Digital Input

1. Use the Direction keys to move the cursor left or right. Rotate the knob to change

a digit (clockwise to increase 1), and the range of digit is 0~9.

2. Use the Keypad to set the parameters values of the waveforms, which can change

its value directly.

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To Use Store/Utility/Help Function

As shown in figure 1-22, there are three buttons on the operation panel, which are used to call the store/recall, utility and help function. The instruction below will help you familiarize with these Functions.

Figure 1-22 The Store/Recall, Utility and Help Button

1. The Store/Recall Button is used to store waveform data and configure

information.

2. The Utility Button is used to set the auxiliary system function, change the output

configure parameters, interface setting, system setting information or perform the instrument self-test and read the calibration information, etc.

3. The Help Button is used to see the help information.

Operation Instruction To get help：

To get help on any key of the front panel, press the key and last for 1 second, then the help message will appear.

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Chapter 2 Operating Your Generator

Up to now you have got a brief understanding of the front/rear panel, every function control area and keys of DG2000 series. You should also know how to set your function/arbitrary waveform generator. If you are not familiar with these operations, please read Chapter 1 “Getting Started” again. This chapter covers the following topics:

 Menu/Graph Mode ( / A )  Setting Sine Signal ( Sine )  Setting Square Signal ( Square )  Setting Ramp Signal ( Ramp )  Setting Pulse Signal ( Pulse )  Setting Noise Signal ( Noise )  Setting Arb Signal ( Arb )  Settig Logic Signal Output ( Digital ) *  Output Modulated Signal ( Mod )  Output Sweep Signal ( Sweep )  Output Burst Signal ( Burst )  Trigger ( Trigger )  Store/Recall ( Store/Recall )  Utility Setting ( Utility )  Help System ( Help )

You are suggested to read this chapter carefully so as to understand DG2000 Series Generator‘s versatile waveform setting Functions and the other operation methods. *Note: For the operation instruction of Logic Signal Output, please refer to User’s

Guide of DG2000 Logic Signal Output Module.

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The Menu/Graph Mode

To activate the Graph Mode

Press / A to enter the Graph Mode. The name of the current selection parameter is shown on the top left corner of the screen, and its value is shown in inverse color. See figure 2-1.

Display Menu

Button

Figure 2-1 The Graph Mode Interface

To Select the Desired Parameter

To select the specific parameters, please press any menu button and the operation menu will pop out. Press the corresponding button to set the parameter. For example, if you want to change the frequency, press any menu button and select Freq menu. The direction button will help you find your desired parameter and change its value with the knob or the keypad, see figure 2-2. Under the Graph Mode, the parameters will still switch at a second press on the button, such as Amp/HiLev .

Current

Parameter

Output

Frequency

Amp Offset

Operation

Menu

Figure 2-2 Setting the parameters in the Graph Mode

To Quit the Graph Mode

To quit the Graph Mode, press the / A again and return the Menu Mode.

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To Set Sine Signals

In the Menu Mode, press Sine button to call the Sine operation. The top left corner of the screen will show the name of the current waveform, see figure 2-3. The output Sine waveform parameters are set by using the Sine operation menu.

The parameters for Sine waveforms are: Frequency/ Period, Amplitude/ High Level, Offset/ Low Level. Different Sine Signals are generated by setting these parameters. As is shown in figure 2-4, select Freq in the operation menu and the frequency parameter will show in the parameter area. then Users can change the frequency value by using the direction button and the knob or the keypad.

Output

Waveform

Operation Menu:

Controlled and

Operated by

menu button

Figure 2-3 The Setting Interface of Sine Signal Parameter

Parameter

Current

Figure 2-4 The Operation Menu

Table 2-1 The Menu Explanations of Sine Signal

Function

Menu

Frequency/

Period

Amplitude/

High Level

Offset/Low

Level

Settings Explanation

Setting the signal frequency or period; the

current parameter will switch at a second press.

Setting the signal Amplitude or High Level; the

current parameter will switch at a second press.

Setting the signal Offset or Low Level; the current parameter will switch at a second press

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To Set the Output Frequency/Period

1. Press Sine Æ Freq/Period Æ Freq , to set the frequency parameter.

The frequency shown on the screen is the default value when the instrument is powered or the set value beforehand. When setting the function, if the current value is valid for the new waveform, it will be used sequentially. If you want to set the period for the waveform, press Freq/Period button again, switch to the Period parameter (The current operation is displayed in inverse color).

2. Input the Desired Frequency.

Use the keypad to input the parameter value directly, and press the corresponding button to select the parameter unit. Or you can use the direction button to select the digit you want to edit, and then use the knob to change its value.

Current

Parameter:

Frequency

Figure 2-5 Setting the Frequency

Instruction:

When using the keypad to enter the digit, you can use the Left direction button to move the cursor backward and delete or change the value of the previous digit. When using the knob to input, use the direction buttons to select the digit you want to edit and rotate the knob to change its value.

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To Set the Output Amplitude

1. Press Sine Æ Ampl/HiLev Æ Ampl , to set the amplitude.

The amplitude shown on the screen is the default value when the instrument is powered or the set value beforehand. When changing the function, if the current value is valid for the new waveform, it will be used sequentially. If you want to set the waveform by high Level or Low Level, press Ampl/HiLev or Offset/Lolev again, switch to HiLev or LoLev parameter (The current operation is displayed in inverse color).

2. Input the Desired Amplitude

Use the keypad or the knob to input the desired value, choose the unit, and press the corresponding button.

Current

Parameter:

Amplitude

Figure 2-6 Setting the Amplitude

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To Set the DC Offset

1. Press Sine Æ Offset/LoLev Æ Offset , to set the offset.

The offset shown on the screen is the default value when the instrument is powered or the set value beforehand. When changing the function, if the current value is valid for the new waveform, it will be used sequentially.

2. Input the Desired Offset

Use the keypad or the knob to input the desired value, choose the unit, and press the corresponding button.

In the Graph Mode, the waveform is shown in figure 2-8.

Current

Parameter:

Offset

Figure 2-7 Setting the Offset

Figure 2-8 The Waveform Parameter in the Graph Mode

Notes: the Setting of any waveform for DC Offset is the same as sine wave, so we will not cover this topic hereon.

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To Set Square Signals

Press Square button, in the Normal Mode, the operation menu will appear at the bottom of the screen, see figure 2-9. Set the Square parameters by using the operation menu.

The parameters for Square waveforms are: Frequency/ Period, Amplitude/ High Level, Offset/ Low Level and Duty Cycle. See figure 2-10. In the operation menu, select Duty, and the corresponding parameter will be displayed in inverse color for which users can make a change.

Figure 2-9 The Setting Interface of Square Signal

Figure 2-10 The Operation Menu

Table 2-2 The Menu Explanations of Square Signal

Function

Menu

Frequency/

Period

Amplitude/

High Level

Offset/Low

Level

Duty Cycle Setting the Duty Cycle for Square Waveform

Settings Explanation

Setting the signal frequency or period; the current

parameter will switch at a second press.

Setting the signal Amplitude or High Level; the

current parameter will switch at a second press.

Setting the signal Offset or Low Level; the current parameter will switch at a second press

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Term Explanation: Duty Cycle: The percentage that the High Level takes up in the whole Period.

Please Note : for the Frequency Duty Cycle Value Below 8MHz: 20% to 80% From 8MHz to 16MHz (included): 40% to 60%

Higher than 16MHz: 50%

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To Set the Duty Cycle

1． Press Square Æ Duty , to set the Duty Cycle.

The Duty Cycle shown on the screen is the default value when the instrument is powered or the set value beforehand. When changing the function, if the current value is valid for the new waveform, it will be used sequentially.

2． Input the Desired Duty Cycle

Use the keypad or the knob to input the desired value, choose the unit, and press the corresponding button. The Generator will change the waveform immediately.

Current

Parameter:

Duty Cycle

Figure 2-11 Setting the Duty Cycle

In the Graph Mode, the waveform is shown in figure 2-12.

Figure 2-12 The Waveform Parameter in the Graph Mode

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To Set Ramp Signals

Press Ramp button, in the Normal Mode, the operation menu will appear at the bottom of the screen, see figure 2-13. Set the Ramp parameters by using the operation menu.

The parameters for Ramp waveforms are: Frequency/ Period, Amplitude/ High Level, Offset/ Low Level and Symmetry. See figure 2-14. In the operation menu, select Symm , and the corresponding parameter will be displayed in inverse color for which users can make a change.

Figure 2-13 The Setting Interface of Ramp Signal

Figure 2-14 The Operation Menu

Table 2-3 The Menu Explanations of Ramp Signal

Function

Menu

Frequency/

Period

Amplitude/

High Level

Offset/Low

Level

Symmetry Setting the Symmetry for Ramp Waveform

Term Explanation: Symmetry: The percentage that the Rising Period takes up in the whole Period.

Input Range: 0~100%

Settings Explanation

Setting the signal frequency or period; the current

parameter will switch at a second press.

Setting the signal Amplitude or High Level; the

current parameter will switch at a second press.

Setting the signal Offset or Low Level; the current parameter will switch at a second press

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To Set the Symmetry

1． Press Ramp Æ Symm , to set the Symmetry.

The Symmetry shown on the screen is the default value when the instrument is powered or the set value beforehand. When changing the function, if the current value is valid for the new waveform, it will be used sequentially.

2． Input the Desired Symmetry.

Use the keypad or the knob to input the desired value, choose the unit, and press the corresponding button. The Generator will change the waveform immediately.

In the Graph Mode, the waveform is shown in figure 2-16.

Current

Parameter:

Symmetry

Figure 2-15 Setting the Symmetry

Figure 2-16 The Waveform Parameter in the Graph Mode

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To Set Pulse Signals

Press Pulse button, in the Normal Mode, the operation menu will appear at the bottom of the screen, see figure 2-17. Set the Pulse parameters by using the operation menu. The parameters for Pulse waveforms are: Frequency/ Period, Amplitude/ High Level, Offset/ Low Level, Pulse Width/Duty Cycle and Edge Time. See figure 2-18. In the operation menu, select Width , and the corresponding parameter will be displayed in inverse color for which users can make a change.

Figure 2-17 The Setting Interface of Pulse Signal

Figure 2-18 The Operation Menu

Table 2-4 The Menu Explanations of Pulse Signal

Function

Menu

Frequency/

Period

Amplitude/

High Level

Offset/Low

Level

Width/ Dty Cyc

Edge Setting the Edge Time for Pulse Waveform.

Settings Explanation

Setting the signal frequency or period; the current

parameter will switch at a second press.

Setting the signal Amplitude or High Level; the

current parameter will switch at a second press.

Setting the signal Offset or Low Level; the current parameter will switch at a second press.

Setting the signal Pulse Width or Duty Cycle; the current parameter will switch at a second press.

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Term Explanation: Pulse Width:

Positive Pulse Width: the time span between thresholds of 50% of the rising edge amplitude to the next 50% of the falling edge amplitude; Negative Pulse Width: the time span between thresholds of 50% of the falling edge amplitude to the next 50% of the rising edge amplitude.

Edge Time:

The time span between the thresholds of the 10% to 90% of the rising edge amplitude is called Rising Time. The time span between the thresholds of the 10% to 90% of the falling edge amplitude is called Falling Time. The Rising Time and the Falling Time together are called Edge Time.

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To Set the Pulse Width

1． Press Pulse Æ Width , to set the Pulse Width.

The Pulse Width shown on the screen is the default value when the instrument is powered or the set value beforehand. When changing the function, if the current value is valid for the new waveform, it will be used sequentially.

2． Input the Desired Pulse Width

Use the keypad or the knob to input the desired value, choose the unit, and press the corresponding button. The Generator will change the waveform immediately.

Current

Parameter:

Pulse Width

Figure 2-19 Setting the Pulse Width

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To Set the Edge Time

1． Press Pulse Æ Edge , to set the Edge Time.

The Edge Time shown on the screen is the default value when the instrument is powered or the set value beforehand. When changing the function, if the current value is valid for the new waveform, it will be used sequentially.

2． Input the desired Edge Time

Use the keypad or the knob to input the desired value, choose the unit, and press the corresponding button. The Generator will change the waveform immediately.

Current

Parameter:

Edge Time

Figure 2-20 Setting the Edge Time

In the Graph Mode, the waveform is shown in figure 2-21.

Figure 2-21 The Waveform Parameter in the Graph Mode

Instruction:

The system has the default setting that the Rising and Falling edge time are the same.

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To Set Noise Signals

Press Noise button, in the Normal Mode, the operation menu will appear at the bottom of the screen, see figure 2-22. Set the Pulse parameters by using the operation menu. The parameters for Noise waveforms are: Amplitude/ High Level and Offset/ Low Level. See figure 2-23. In the operation menu, select Ampl , and the corresponding amplitude will be displayed in inverse color for which users can make a change for the the amplitude of Noise. And Noise signal has no frequency or period.

Figure 2-22 The Setting Interface of Noise Signal

Figure 2-23 The Operation Menu

Table 2-5 The Menu Explanations of Noise Signal

Function

Menu

Amplitude/

High Level

Offset/Low

Level

Settings Explanation

Setting the signal Amplitude or High Level; the

current parameter will switch at a second press.

Setting the signal Offset or Low Level; the current parameter will switch at a second press.

In the Graph Mode, the waveform is shown in figure 2-24.

Figure 2-24 The Waveform Parameter in the Graph Mode

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To Set Arbitrary Signals

Press Arb button, in the Normal Mode, the operation menu will appear at the bottom of the screen, see figure 2-25. Set the Arbitrary Waveform parameters by using the operation menu.

Arbitrary Signals are divided into two categories: the built-in optional system waveforms and the user-defined arbitrary waveforms. The parameters for Arbitrary Waveforms are: Frequency/ Period, Amplitude/ High Level and Offset/ Low Level. See figure 2-26. In the operation menu, select Freq , and the corresponding frequency will be displayed in inverse color for which users can make a change.

Figure 2-25 The Setting Interface of Arbitrary Signal

Figure 2-26 The Operation Menu

Table 2-6 The Menu Explanations of Arbitrary Signal

Function

Menu

Frequency/

Period

Amplitude/

High Level

Offset/Low

Level

Load Select the built-in Arbitrary Signal for Output.

Edit Create and Edit Arbitrary Waveform.

Settings Explanation

Setting the signal frequency or period; the current

parameter will switch at a second press.

Setting the signal Amplitude or High Level; the

current parameter will switch at a second press.

Setting the signal Offset or Low Level; the current parameter will switch at a second press.

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To Select the built-in Arbitrary Waveform

There are five built-in Arbitrary Waveforms and user-defined Arbitrary Waveforms in the Generator. To select one of them, following the instructions below:

Press Arb Æ Load , to enter into the interface shown below.

Figure 2-27 The Operation Menu

Table 2-7 The Selection Menu of Built-in Arbitrary Waveform

Function

Menu

Built-in

Stored

Settings Explanation

Select one of the five built-in Arbitrary Waveforms

(See Table 2-8)

Select one of Arbitrary Waveforms stored in the

Non-volatile memory.

Select one of Arbitrary Waveforms stored in the

Volatile

Volatile memory. When a new waveform is created, the old one will be erased. Delete one of the Arbitrary Waveforms stored in

Delete

the Non-volatile memory. The five Built-in Waveforms can not be deleted.

Cancel the current operation, and return to the upper menu. (The followings are the same)

Instructions:

z When there is no waveform stored in the Non-Volatile Memory, the

Stored Menu and the Delete Menu will hide.

z When there is no waveform in the Volatile Memory, the Volatile menu will

hide.

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User’s Guide for DG2000 Series

1. To Select the Built-in Waveform

Press Arb Æ Load Æ BuiltIn , and enter into the following interface.

Figure 2-28 The Operation Menu

Table 2-8 The Built-in Arbitrary Waveforms Menu

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Function

Menu

ExpRise

ExpFall

Settings Explanation

Select the built-in Exponential Rise Waveform

Select the built-in Exponential Fall Waveform

NegRamp

Sinc

Select the built-in Negative Ramp Waveform

Select the built-in Sinc Waveform. Sinc＝Sin(x)/x

Cardiac Select the built-in Cardiac Waveform

In the Graph Mode, the waveform is shown in figure 2-29.

Figure 2-29

The Waveform Parameter in the Graph Mode (Exponential Rising Waveform)

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2. To Select the Stored Waveform

Press Arb Æ Load Æ Stored , and enter the following interface. Select the desired waveform document which will be displayed in inverse color and press Recall to recall it from the memory.

Figure 2-30 The Operation Menu

Table 2-9 The Stored Arbitrary Waveform Menu

Function

Menu

Settings Explanation

Local

Disk

U Disk

Select display route for the system information

(When U Disk

is connected )

Setting of the Generator

Arbitrary waveform file

All types of documentation

Type

State

Data

All

Recall the waveform or Setting

Recall

information in the specific position in the memory.

Store

Remove

Save the waveform to the appointed place( See Table 2-24)

Remove any waveform that has been stored in the memory

Instructions:

When there is no waveform stored in the Arb1、Arb2、Arb3 and Arb4, this menu will hide (The followings is the same and will not explain again)

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3. To Remove the Waveform

Press Arb Æ Load Æ Store , and enter the following interface. Select the waveform documentation to be deleted which will be displayed in inverse color, and then press Remove to delete it.

Figure 2-31 The Operation Menu

Table 2-10 The Menu Explanations of Waveform Removal

Function

Menu

Disk

Type

Recall

Store

Remove

Settings Explanation

Local

Select display route for the

U Disk

system information

(When U disk

is connected )

State

Data

All

Setting of the Generator

Arbitrary waveform file

All types of documentation Recall the waveform or Setting

information in the specific position in the memory.

Save the waveform to the appointed position

Remove any waveform that has been stored in the memory

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To Edit the Arbitrary Waveform

The Generator allows users to edit Arbitrary Waveforms, which can create any new waveform by initializing points. The operation steps are as follows:

Press Arb Æ Edit , enter the interface shown below.

Figure 2-32 The Operation Menu

Table 2-11 The Menu Explanations of Waveform Edition

Function

Menu

Creat

Stored

Volatile

Delete

Settings Explanation

Create a new waveform, and erase the waveform

in the Volatile memory.

Edit the waveform stored in the non-Volatile

memory

Edit the waveform stored in the Volatile memory

Delete one of the Arbitrary Waveforms stored in the Non-volatile memory. But The five Built-in Waveforms can not be deleted.

Instructions:

z When there is no waveform stored in the Non-Volatile Memory, the Stored

Menu and the Delete Menu will hide.

z When there is no waveform in the Volatile Memory, the Volatile menu will

hide.

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1. To Create a New Waveform

Press Arb Æ Edit Æ Creat , to set the overall parameters for the waveform. The setting interface is shown in figure2-33 and the menu in table 2-12.

Figure 2-33 The Interface of setting the new waveform parameters

Figure 2-34 The Operation Menu

Table 2-12 The Explanations of Waveform Parameters

Function

Menu

Settings Explanation

Period Setting the Period for the Waveform

LevelHi Setting the Level High for the Waveform

LevelLo

Setting the Level Low for the Waveform

Activate the linear Interpolation between the

Interp On/

Off

defined points Deactivate the linear Interpolation between the defined points

Points

Set the number of points when Initializing the waveform

EditPt Start the Waveform Editor

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To Set the Point Number

Press Points , set the number of the initializing points. When a new waveform is created, the waveform editor will firstly create a waveform with two points. The Waveform Editor connects the last point to the Voltage Level of point #1 to create a continuous waveform automatically. A waveform with most 512K points can be created. In the default setting, the voltage of point #1 is High Level, the time is at 0 s, while the

voltage of point #2 is Low Level and the time is the half of the set Cycle period.

To Set the Interpolation

Press Interp , if you select Interp On , and the points will be connected with beelines; otherwise, the voltages between the two consecutive points will not change, and the waveform looks like a step-up one.

To Edit the Waveform Points

Press Arb Æ Edit Æ Creat Æ EditPt , the waveform can be defined by setting the time and voltage for each point. The interface is given as follows:

2-24

Figure 2-35 The Operation Menu

User’s Guide for DG2000 Series

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Table 2-13 The Menu Explanations of Waveform Edition

Function

Menu

Settings Explanation

Point# Select the point to be edited

Time Set time for the Selected point

Voltage

Set Voltage for the Selected point

Insert a new point between the

Insert

defined points. Use the “Time” and “Voltage” to define the new point.

Remove Remove the current point

Save

Save the created waveform to the non-Volatile Memory.

Instruction:

The time for the last definable point should be less than the cycle period of the waveform.

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Save the Waveform to the Non-Volatile Memory

Press Arb Æ Edit Æ Creat Æ EditPt Æ Save , enter the following interface. Select the desired waveform document to be saved, which will be displayed in inverse color and press Save to save it to the specific place.

Figure 2-36 The Operation Menu

Table 2-14 The Menu Explanations of Saving New Waveform

Function

Menu

Settings Explanation

Local

Disk

U Disk

(When a U

Select display path for the system information

disk is

connected )

Setting of the Generator

Arbitrary waveform file

All types of documentation

Type

State

Data

All

Recall the waveform or Setting

Recall

information in the specific position in the memory.

Store

Remove

Save the waveform to the appointed position

Remove any waveform that has been stored in the memory

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Instruction To save the Arbitrary Waveform：

In the Non-volatile Memory, each waveform storage position can only save one waveform. If a new one is stored, the old one will be erased.

z For a waveform containing points below 128K, the current position will be

used.

z For a waveform containing points from128K to 256K, two sequential position

will be used.

z For a waveform containing points from256K to 512K, All the 4 position will be

used.

In the Graph Mode, the waveform is shown in figure 2-37.

The Default

Arbitrary

Wavefor

m

Figure 2-37 The Waveform Parameter in the Graph Mode

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2. To Edit the Stored Waveform

Press Arb Æ Edit Æ Store , enter the following interface. Select the desired waveform document to be edited, which will be displayed in inverse color and press Recall to recall and edit it in the Volatile memory.

Figure 2-38 The Operation Menu

Table 2-15 The Menu Explanations of Editing Stored Waveform

Function

Menu

Settings

Explanation

Local

Disk

U Disk

(When a U

Select display path for the system information

disk is

connected )

Setting of the Generator

Arbitrary waveform file

All types of documentation

Type

State

Data

All

Recall the waveform or Setting

Recall

information in the specific position in the memory.

Store

Remove

Save the waveform to the appointed position.

Remove any waveform that has been stored in the memory

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3. To Delete a Waveform

Press Arb Æ Edit Æ Delete , to delete a waveform. Select the desired waveform to be deleted which will be displayed in inverse color and press Remove to delete it.

Instruction

The Ultrawave software can be used to edit the user-defined waveform, and you can download it from the official website

www.rigolna.com.

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To Generate the Modulated Waveform

Use the Mod button to generate modulated waveform. DG2000 Series can generate AM, FM, FSK, PM or PWM modulated waveforms. The modulation parameters should be set in different types of modulation. For example, in AM, users can set the Source (Internal/ External), depth, Modulating Frequency, Modulating Waveform and Carrier Waveform; in FM, users can set the Source (Internal/ External), Frequency Deviation, Modulating Waveform and Carrier Waveform; in FSK, users can set the Source (Internal/ External), Hop Frequency, FSK Rate, Modulating Waveform and Carrier Waveform; while in PM, users can set the Source (Internal/ External), Phase Deviation, Modulating Frequency, Modulating Waveform and Carrier Waveform, etc.

We will explain how to set these parameters in details according to different types of Modulation.

Figure 2-39 The setting Interface of Modulated Waveform

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AM

The modulated waveform consists of two parts: the Carrier Waveform and the Modulating Waveform. In AM, the Amplitude of the Carrier Waveform varies with the instantaneous voltage of the modulating waveform. The Parameters for the AM are shown in table 2-16.

Figure 2-40 The Setting Interface of AM Waveform

Press Mod Æ Type Æ AM , enter the following interface.

Figure 2-41 The Operation Menu

Table 2-16 The Menu Explanations of the AM Parameters

Function

Menu

Settings

Explanation

Type AM Amplitude Modulation

Internal The Source is Internal

SrcInt

SrcExt

External

The Source is External. Use the [Modulation In] connector in the Rear panel.

Depth Set the amplitude range

Set the modulating waveform

AMFreq

frequency. Frequency Range:

2mHz~20kHz (Only Internal). Sine Square

Waveform

Triangle UpRamp DnRamp

Press the function key Sine , Square

etc to choose different Shape of

waveform. Noise Arb

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Note: When choose the external modulation, the menu Depth , AMFreq and Shape will hide.

In the Graph Mode, the waveform is shown in figure 2-42.

Type

Frequency

Depth

Wavefor

Source

Modulated

Carrier

Figure 2-42 The Waveform Parameter in the Graph Mode

Term Explanation Modulation Depth

The Amplitude Range (also called “Percentage Modulation”). Modulation Depth varies from 0% to 120%.

z In the 0% Modulation, the output amplitude is the half of the set one. z In the 100％ Modulation, the output amplitude is the same with the set one. z For an external source, the depth of AM is controlled by the voltage level of the

connector connected to the [Modulation In]. +5V corresponds to the currently set depth 100%.

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FM

The modulated waveform consists of two parts: the Carrier Waveform and the Modulating Waveform. In FM, the Frequency of the Carrier Waveform varies with the instantaneous voltage of the modulating waveform. The Parameters for the FM are shown in figure 2-43.

Figure 2-43 The Setting Interface of FM Waveform

Press Mod Æ Type Æ FM , enter the following interface.

Figure 2-44 The Operation Menu

User’s Guide for DG2000 Series

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Table 2-17 The Menu Explanations of the FM Parameters

RIGOL

Function

Menu

Settings

Explanation

Type FM Frequency Modulation

SrcInt SrcExt

Internal Choose the Internal source.

external

Use the rear [Modulation In] linker to select the external source. Set the Frequency Deviation between

Deviat.

the Modulating Waveform and the Carrier Waveform. Set the modulating waveform

FMFreq

frequency. Frequency Range: 2mHz~20kHz (Only Internal).

Sine Square

Shape

Triangle UpRamp DnRamp

Press the function key Sine , Square etc to choose different Shape of

waveform. Noise Arb

Note: When choose the external modulation, the menu FMFreq and Shape will hide.

In the Graph Mode, the waveform is shown in figure 2-45.

Modulating Frequency

2-34

Frequency Deviation

Figure 2-45 The Waveform Parameter in the Graph Mode

User’s Guide for DG2000 Series

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Term Explanation Frequency Deviation

z The Deviation should be equal to or less than the Carrier Waveform Frequency. z The Sum of the Deviation and the Carrier Frequency should be equal to or less

than maximum frequency of the selected function plus 100 kHz.

z For an External Source, the Deviation is controlled by the ±5V voltage Level of

the Connector connected to the [Modulation In]. +5V adds to the selected Deviation, lower external voltage generates less deviation, while negative voltage reduces the modulated signal frequency below the corresponding carrier’s.

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FSK

The FSK Modulation is a modulation method, the output frequency shifts between the two pre-set frequencies (Carrier Waveform Frequency and the Hop Frequency). The Frequency for the Output Frequency to shift from the carrier waveform frequency to and from the Hop frequency is called the FSK rate. The frequency by which the output frequency shift from each other is determined by the Internal Frequency generator or the Signal Voltage Level offered by the [Ext Trig/FSk/Burst] connector in the rear panel:

z If you choose the Internal Modulation, the frequency at which the output

frequency shifts between the carrier frequency and the Hop frequency is determined by the set FSK rate.

z If you choose External Modulation and overlook the FSK rate, the output frequency

is determined by the Voltage Level of the [Ext Trig/FSk/Burst] connector on the rear panel. If the Voltage Level is low, then generate the carrier frequency; when the voltage level is High, generate the Hop frequency.

Figure 2-46 The Setting Interface of FSK Waveform

Press Mod Æ Type Æ FSK , enter the following interface.

Figure 2-47 The Operation Menu

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User’s Guide for DG2000 Series

Table 2-18 The Menu Explanations of the FSK Parameters

RIGOL

Function

Menu

Type FSK Frequency Shift Keying Modulation

SrcInt

SrcExt

HopFreq

FSK Rate

Note: When choose the external modulation, the menu FSkRate

will hide.

In the Graph Mode, the waveform is shown in figure 2-48.

Settings

Internal Choose the Internal source.

Use the rear [Ext Trig/FSk/Burst]

external

connector to choose the external source.

Set the Hop Frequency Range: 1µHz~40MHz.

Set the frequency at which the output frequency shifts between the carrier frequency and the Hop frequency (OnlyInternal): 2mHz~100kHz.

FSK Frequency

Explanation

Hop Frequency

Figure 2-48 The Waveform Parameter in the Graph Mode

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PM

The modulated waveform consists of two parts: the Carrier Waveform and the Modulating Waveform. In PM, the Phase of the Carrier Waveform varies with the instantaneous voltage Level of the modulating waveform. The Parameters for the PM are as shown in figure 2-49.

Figure 2-49 The Setting Interface of PM Waveform

Press Mod Æ Type Æ PM , enter the following interface.

Figure 2-50 The Operation Menu

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User’s Guide for DG2000 Series

Table 2-19 The Menu Explanations of the PM Parameters

RIGOL

Function

Menu

Settings Explanation

Type PM Phase Modulation

Internal Choose the Internal source.

SrcInt

SrcExt

external

Use the rear [Modulation In] connector to choose the external source. Set the Phase Deviation between the

Deviat.

Modulating Waveform and the Carrier Waveform, ranging from 0

o

to 360o

Set the modulating waveform

Freq

frequency. Frequency Range:

2mHz~20kHz (Only Internal). Sine Square

Shape

Triangle UpRamp DnRamp

Press the function key Sine, Square

etc to choose different Shape of

waveform. Noise Arb

Note: When choose the external modulation, the menu PMFreq

and Shape will hide.

In the Graph Mode, the waveform is shown in figure 2-51.

Modulating Frequency

Phase Deviation

Figure 2-51 The Waveform Parameter in the Graph Mode

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PWM

The modulated wave is composed of the carried wave and the modulation wave. In the PWM ( Pulse-Width Modulation), the pulse width of the carried wave varies with the instantaneous voltage Level of the modulating waveform. The Parameters for the PWM are shown in figure 2-52.

Figure 2-52 The Setting Interface of the PWM Waveform

The PWM function is only for modulating the Pulse wave. Once in the other wave interface, press Mod you may discover the softkey PWM can not be used while choosing the modulation type, it can enter the PWM interface only by pressing Mod Once in the Pulse interface.

Press Pulse and enter the PWM interface, then press Mod, enter the following menu.

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Figure 2-53 The operation menu

User’s Guide for DG2000 Series

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T

Table 2-20 The Menu Explanations of the PWM Parameters

Function

Menu

Settings Explanation

Type PWM Pulse Width Modulation

Internal Choose the Internal source.

SrcInt

SrcExt

external

Use the rear [Modulation In] connector to choose the external source.

DtyDev

WidDev

Set the offset of the PWM.

Set the frequency of the modulation

PWMFreq

wave with the range: 2mHz~20kHz (Only Internal).

Sine Square

Shape

Triangle UpRamp DnRamp

Press the function key Sine, Square etc to choose different Shape of

waveform. Noise Arb

Note: When choose the external modulation, the menu WMFreq

and Shape will hide.

In the Graph Mode, the waveform is shown in figure 2-54.

he frequency of phase

modulation

he offset of the phase

Figure 2-54 The Waveform Parameter in the Graph Mode

Instructions:

z The max range of DtyDev is the minimum in (duty, 1 - duty);

The max range of WidDev is the minimum in (width, period - width).

z

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To Generate Sweep

In the frequency sweep mode, the function generator “sweep” from the start frequency to the stop frequency at the sweep rate you specify. Sweeping can be generated by Sine, Square, Ramp or Arbitrary Waveforms (Pulse, Noise and DC are not allowed).

Figure 2-55 The Setting Interface of Sweep Waveform

Press Sweep button, in the Normal Mode, the operation menu will appear on the bottom of the screen, see figure 2-56. Set the Waveform parameters by using the operation menu.

Figure 2-56 The Operation Menu

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Table 2-21 The Menu Explanations of the Sweep Parameters

RIGOL

Function

Menu

Linear/

log

Start/

Center

Stop

Span

Time

Trigger

Settings Explanation

Set the Sweep frequency with linear change Set the Sweep frequency with logarithmic change

Set the Start Frequency of the Sweep Set the Center Frequency of the Sweep

Set the Stop Frequency of the Sweep Set the Frequency Span of the Sweep

Set the Time Span of the Sweep for which the Frequency changes from the Start Frequency to Stop Frequency. Int: Choose Internal Source

Ext: Choose External Source, use the [Ext

Source

Trig/FSk/Burst] connector in the rear panel Manual: Choose External Source, set the start and stop time by hand

: Signal Triggered at Rise Edge

Trig Ou t

: Signal Triggered at Fall Edge

Off: Turn off Trigger Setting Finish Setting

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Sweep Frequency Setting

Use Start and Stop or Center and Span to set the range of the frequency. Press the button again to switch to each other.

z To Sweep upward, set the Start Frequency lower than the Stop Frequency, or set a

positive frequency interval.

z To Sweep downward, set the Start Frequency higher than the Stop Frequency, or

set a negative frequency interval.

In the Graph Mode, the waveform is shown in figure 2-57.

Sweep Time

Stop Frequency

Start Frequency

Sweep Type

Figure 2-57 The Waveform Parameter in the Graph Mode

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To Generate Burst

Burst Function can generate versatile waveforms in burst, which can last specific times of waveform cycle(N-Cycle Burst), or when the external gated signals( Gated Burst) is applied, any waveform could be used. But noise can only be used in Gated Burst.

Press Burst button, in the Normal Mode, the operation menu will appear on the bottom of the screen, see figure 2-58. Set the Waveform parameters by using the operation menu.

Figure 2-58 The Setting Interface of Burst Waveform

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Set the N-Cycle Burst

Press Burst Æ NCycle , enter the following menu.

Figure 2-59 The Operation Menu

Table 2-22 The Menu Explanations of N-Cycle Burst

RIGOL

Function

Menu

Settings Explanation

N-Cycle Set the N-Cycle Mode

Cycles/ Infinite

Set the Number of the bursts in a N-Cycle Set the Number of the bursts in a N-Cycle to be infinite

Phase Set the Start Phase of the Burst

Period Set the Period of the Burst

Delay Set the Delay of the burst

Int: Choose Internal Source Ext: Choose External Source, use the [ Ext

Source

Trig/FSk/Burst] connector in the rear panel Manual: Choose External Source, set the

Trig ge r

start and stop time by hand

: Signal Triggered at Rising Edge

Trig Ou t

: Signal Triggered at Falling Edge

Off: Turn off Trigger Setting Finish Setting

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User’s Guide for DG2000 Series

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N-Cycle/ Gated

N-Cycle has specific number of waveform cycles, and every burst is activated by a trigger event. Gated burst controls burst by external source.

Cycle Number

Set the number of Waveform Cycle in an N-Cycle (1 to 1,000,000 or Infinite). If you choose Infinite, then a continuous waveform will be generate which will not stop until a trigger event happens (Trigger button is pressed).

z If needed, Burst Period will increase to cater to the specific number of cycles. z For a frequency greater than 25MHz, only a bust with infinite cycles is allowed. z For an infinite-cycle Burst, External or Manual Trigger is needed to activate burst.

Phase

Define the Start and the Stop Point in a waveform. The phase varies from -360° to +360°, and the default setting is 0°. For an Arbitrary Waveform, 0° is the phase of the first waveform point.

Period

Set the time span between an N-Cycle Burst and the next. If necessary the period will increase to reach the specific number of cycles in a burst. Burst Period> Period X Burst Number

Delay

Set the Time Delay between the Trigger Input and the Start of the N-Cycle Burst. The minimum delay is a function of the specific burst period, and should always be greater than 0.

In the Graph Mode, the waveform is shown in figure 2-60.

Burst Period

Start Phase

Delay

N-Cycle

Cycle Times

Figure 2-60 The Waveform Parameter in the Graph Mode

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Set the Gated Burst

Press Burst Æ Gated , enter the following menu.

Figure 2-61 The Operation Menu

Table 2-23 The Menu Explanations of Gated Burst

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Function

Menu

Settings Explanation

Gated Set the Gated Mode

Polarity

Phase

Pos

Neg

Set the Polarity of the Gated Signal

Set the Start Phase of the Gated Signal

In the Graph Mode, the waveform is shown in figure 2-62.

Start Phase

Positive Gated Signal

Gated

Figure 2-62 The Waveform Parameter in the Graph Mode

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To Store and Recall

Press Store/Recall button, and the operation menu will appear at the bottom of the screen. You can save or read the State or Data Documentation in the Generator or build and delete documentation in the U Disk. File names can either be Chinese or English.

Figure 2-63 The Save and Read Interface

Figure 2-64 The Operation Menu

Table 2-24 The Menu Explanations of Store and Recall

Function

Menu

Settings Explanation

Local

Disk

U Disk

Choose display route for the system information

(When U Disk is connected )

Setting of the Generator

Arbitrary waveform file

All types of documentation

Type

State

Data

All

Recall the waveform or Setting

Recall

information in the specific position in the memory.

Store

Remove

Save the waveform to the appointed position.

Remove any waveform that has been stored in the memory

About the Disk

Use the Disk button to choose Local or U Disk (When U Disk is connected).

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To Save the Instrument State

Users are allowed to store the instrument state in any one of the 4 Non-Volatile Memories. When the power is on again, the instrument will return to the state before it was powered off. The state storage will “memorize” the selected function (including the Arbitrary Waveform), Frequency, Amplitude, DC Offset, Duty Cycle, Symmetry, and other modulation parameters used.

To Save the Instrument State, following the steps:

1. Choose the file Type to store

Press Store/Recall Æ State , and set the storage type as “State”.

2. Choose the location of the file.

There are four positions in the local STATE1, STATE2, STATE3 and STATE4, and you can choose one of them by rotating the knob.

3. Name the file and Save it

Press Store button, enter the self-defined name. Press Store to finish.

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To Save Data

Users are allowed to store data document in any of the 4 Non-Volatile Memories. If the position is already occupied, the new document will cover the old one. To save the data, following the steps:

1． Set the file Type to store

Press Store/Recall Æ State Æ data , and choose “data” as the storage type.

2． Choose the location of the file.

There are four positions in the local ARB1, ARB2, ARB3 and ARB4, and you can choose one of them by rotating the knob.

3． Name the file and Save it

Press Store button, enter the self-defined name. Press Store to finish.

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The interconnection of DG2000 and DS1000

We have introduced the interfaces of DG2000 to you before, and mentioned the USB Host Interface. And now, we will introduce how to use this interface to connect DG2000 with DS1000 (oscilloscope) to realize the nondestructive data Transmission.

1． Connect DG2000 with DS1000 to sample data; 2． Connect the USB Host Interface of DG2000 with the USB Device Interface of

DS1000. View the waveform in DS1000, following the steps below:

View the Acquired Waveform

Press Store/Recall button, enter the following menu.

Figure 2-65 The operation menu

Rotate the knob, choose CH2: ON

Figure 2-66 Choose the channal

The pre-setting for data reading is finished, and we are going to view the waveform DS1000 acquired. Press Read , and DG2000 will store the waveform that DS1000 acquired in the Volatile Memory.

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User’s Guide for DG2000 Series

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To export the waveform acquired

Press Arb Æ Load Æ Volatile , to load the waveform just read.

Figure 2-67 The operation menu

Figure 2-68 Load the waveform

Notes：The frequency shown in DG2000 may be different greatly from that you imagine. This is because that DG2000 considers the acquired 512K points as a period. If you want to get the real period of the generated waveform, you have to multiple the frequency value shown on DG2000 with the number of the real period in this false period.

Figure 2-69 The Waveform Display in DS1000

As shown in the figure above, this is the waveform shown on another DS1000 by the above operation. Please note that the frequency shown on this instrument is the same as the expected one.

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To Use USB storage

As shown in figure 2-70, the storage location is divided into: the inherent storage (Local) and the U Disk storage(U Disk). At the left side of the front panel, there is a USB interface. When a USB storage is connected, the storage menu will show “U Disk ”. The default location is the local storage.

Figure 2-70 The Interface of USB Storage

1． Install the Mobile Storage

Insert the mobile memory to the USB interface on the front panel, and the screen will show “

2． Choose the Mobile Memory

Press Disk , move the cursor upward or downward to select “U Disk”. Choose Type to be “data” and press Store , enter the file name and then press Store to save the file.

3． Uninstall the Mobile Storage

Remove the U Disk from the Interface and the system will inform you that the U Disk has been removed, and the “U Disk” Sign will disappear.

Note: DG2000 supports the flash U disk in the format of FAT (less than 1G) and FAT32 (less than 2G).

”.

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To Save a File

Press Store/Recall Æ Store , enter the following interface. Enter the self-defined file name in the “File Name” frame. Below the frame is the input keypad. Use the direction button to select the desired character. When the character is in inverse color, press Select to input it.

Figure 2-71 The File Storage Interface

Figure 2-72 The Operation Menu

Table 2-25 The Menu Explanations of File Storage

Function

Menu

Lang

Settings Explanation

EN English Input

CN Chinese Input

Select Select the current character

Remove

Delete the current character

Store Store the file with the current name

Cancel the current operation

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1. English Input

The English Input Interface is shown in figure 2-73, to save a file named as “NewFile”, following the steps below:

File Name

Input

Keypad

Figure 2-73 The English Input Interface

(1) Press Lang Æ EN , enter the English Interface;

(2) Input the file name” NewFile”.

Use the Knob to adjust the cursor to the right character, and press Select . Repeat this until you have selected all the characters needed. Press +/- to choose the majuscule or lowercase.

(3) Edit the File Name

When you have entered a wrong character, move the cursor to the wrong character and press Remove to delete it. And then reenter the file name.

(4) Press Store , to finish and save the file.

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2. Chinese Input

The Chinese Input Interface is shown in figure 2-74. To save a new file, follow the steps below:

File Name Input

Input menu

Page Controller

Key Pad

Figure 2-74 The Chinese Input Interface

(1) Press Lang Æ CN , enter the Chinese Input Interface.

(2) Press “ +/- ”to choose the lowercase, and input the spell of the Chinese.

(3) Input the file name : “新文件”

Use the Knob to adjust the cursor to the right character, and press Select , input “Xin”. In the Input Menu, choose the Chinese character you need with the help of the page controller and the 1~9 button on the keypad.

(4) Edit the wrongly input

When a file name is wrong, move the cursor to the character and press Remove to delete it and reenter the file name.

(5) Press Store to finish and save the file.

Notes: The length of file name user can edit is up to 25 characters or 11 Chinese characters (The file can be stored in U-disk or non- volatile memories, but the length of file name has the limit). The length limit in non-volatile memories is 12 characters or 6 Chinese characters; the limit in U-disk is 39 characters or 19 Chinese characters. If surpass the length limit, N/A is shown.

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To Set the Utility Function

With the Utility function, you can set the parameters of the Generator such as: DC On/Off, Sync On/Off, Output Parameter, Interface Parameter, System Setting and Testing Parameter. The DC switch offers the options of DC output or Arbitrary Waveform Output. Sync Switch offers the option to choose the Sync Signal or not. The Output setting provides the parameter setting for Load/Impedance, Range, Normal/ Inverse and Phase. The Interface Setting offers the storage and load of the configure parameter setting for GPIB (IEEE-488), LAN, RS232 or USB remote control. The System Setting provides the setting for Language, Display, Beep, Screen Guard, Format, Power System Configure and default setting. The test setting provides the self-testing and calibration storage as well as the password and safety switch.

Press Utility to enter the Utility Menu. Its functions are listed below in table 2-26.

Figure 2-75 The Operation Menu

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User’s Guide for DG2000 Series

Table 2-26 The Menu Expanations of Utility System Setting

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Function

Menu

DC On/

Off

Sync On/

Off

Settings Explanation

On Set the output waveform as DC

Off Set the output waveform as Arbitrary.

On

Off

Activate the Sync Signal of the [Sync] Connector on the front panel. Deactivate the Sync Signal of the [Sync] Connector on the front panel.

Output Set the Output parameter (Table 2-27)

I/O Set the I/O (Table 2-28)

System Set the System Configuration (Table 2-33)

Tes t/ Ca l

Test and Calibrate the instrument (Table 2-37)

Instruction Sync Switch Setting：

When the amplitude is low relatively, you can reduce the distortion of the output signal by prohibiting the Sync Signal. And the current storage is in the Non-Volatile Memory.

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To Set the DC Output

Press Utility Æ DC On/Off Æ DC On , enter the following interface.

Figure 2-76 The DC Setting Interface

DC Offset

Set the DC Voltage Level.

To Shift into the Arbitrary Waveform Output

(1) Press Utility Æ DC On/Off Æ DC Off , close the DC output and return the

output of the Arbitrary Waveform.

(2) Press any functional button, and the waveform output setting turns to the output

of arbitrary waveform. The DC option is turned off automatically.

In the Graph Mode, the waveform is shown in figure 2-77.

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Offset

Figure 2-77 Waveform Parameter in the Graph Mode

User’s Guide for DG2000 Series

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To Set the Sync Output

The Generator provides Sync output through the [Sync] Connector on the Front Panel. All the standard output functions (except DC and Noise) have a corresponding Sync Signal. For some Sync applications, they can be prohibited if users do not want to use them.

z In the default setting, the Sync Signal should be connected to the [Sync]

Connector (activated). When the Sync Signal is prohibited, the output voltage Level of the [Sync] Connector is Low.

z In the Inverse Mode, the Sync Signal does not Inverse.

z For Sine, Square, Ramp and Pulse Signal, the Sync Signal is a Square Signal with

50% Duty Cycle. When the output is positive, the Sync Signal is TTL High Level compared to 0 V Voltage or DC Offset; when the output is negative, The Sync Signal is TTL Low Level compared to 0 V Voltage or DC Offset.

z For Arbitrary Waveform, the Sync Signal is a Square Waveform with 50% Duty

Cycle. At the time when the first output waveform point is generated, the Sync Signal Voltage is TTL High Level.

z For AM, FM and PM in Internal Modulation, the Sync Signal reference is the

Modulated Signal (not the Carrier Signal). The Sync Signal is a Square Waveform with 50% Duty Cycle. In the first half modulation period, the Sync Signal is TTL High Level. For External Modulation, the Sync Signal reference is the Carrier Signal (not the Modulated Signal). The Sync Signal is also a Square Waveform with 50% Duty Cycle.

z For FSK, the Sync Signal Reference is the Hop Frequency, and the Sync Signal is a

Square Waveform with 50% Duty Cycle. For the Hop Frequency, at the hopping point, the Sync Signal is TTL High Level.

z For the Burst, when the burst starts, the Sync Signal is High Level. At the specific

point when the Cycle Number ends, the Sync Signal turns Low Level (If the Waveform has a relative starting phase, it may be not zero intersections). For an infinite burst, the Sync Signal is the same as the Sync Signal of the continuous Signal.

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z For the External Gated Burst, the Sync Signal follows the External Gated Signal.

But, please note that this signal will not turn Level Low until the last period end (If the Waveform has a relative starting phase, it may be not zero intersections).

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To Set Output Parameter

Press Utility Æ Output , enter the following menu.

Figure 2-78 The Operation Menu

Table 2-27 The Menu Explanations of Output Setting

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Function

Menu

Settings Explanation

Set the Load connected to the Output

Load

High Z

Connector. Set the Load connected to the Output Connector as High Z.

Range

Normal Inverse

Phase

Allow the Instrument to choose the best Amplifier/ Attenuator

Waveform Normal Output Waveform Inverse Output

Set the Phase Offset of the Output Waveform

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1. To Set the Output Load

For the [Output] Connector on the Front panel, the Generator has a built-in 50Ω series output impedance. If the actual load does not match the set one, the amplitude and offset displayed are incorrect. This function is used to match the displayed voltage with the expected one. Steps for setting the Load value:

(1) Press Utility Æ Output Æ Load , enter the following interface.

Please note that the Load Parameter shown on the right bottom is the default when the power is on or the pre-set load value. If the current value is valid for the output, then the current value can be used.

(2) Input the desired Load Value.

Use the Keypad or the Knob to enter the desired value and choose the unit: Ω or KΩ, press the corresponding button.

Figure 2-79 Set the Output Load

Instruction

DG2000 Series have a fixed 50Ω Series impedance no matter what the value has set for this parameter. If the real load is different from the set one, the displayed voltage will not equal with the real voltage.

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2. To Set the Inverse Waveform

Press Utility Æ Output Æ Inverse , to set the inverse Waveform output.

No offset voltage will change while the waveform is inversed. An inversed waveform will be displayed in the Graph Mode.

Normal

Figure 2-80 The Normal Waveform

Inverse

Figure 2-81 The Inverse Waveform

3. To Adjust the Phase

Press Utility Æ Output Æ Phase, enter the following interface.

Set the Phase with the unit of degree.

Figure 2-82 Set the Phase

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To Set the I/O

Press Utility Æ I/O , to set the I/O. See figure 2-83.

Figure 2-83 The Setting Interface of the I/O

Table 2-28 The Menu Explanations of Setting I/O

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Function

Menu

Settings Explanation

LAN Set the LAN configuration parameter

GPIB Set the GPIB Address

USB See USB equipment address

RS232

Set the RS232 Interface

Set the GPIB address as any value within 0 ~ 30. The default setting is “7”. The Address is stored in the Non-Volatile Memory, and will show when the power is on. The I/O Setting offers the Storage and Load of the configuration parameter setting of the GPIB（IEEE-488）, RS232 or LAN which are used for remote control.

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1. To Set LAN

You can configure the IP Address, the DNS setting or check the current network configuration by setting the LAN interface.

Press Utility Æ I/O Æ LAN , enter the following interface.

Figure 2-84 The Operation Menu

Table 2-29 The Menu Explanations of LAN Setting

Function

Menu

IP

setup

Settings Explanation

Set the corresponding parameter for IP

DNS Set the corresponding parameter for DNS

Info The current setting information about the host

IP Setup

Press Utility Æ I/O Æ LAN Æ IPSetup , enter the following interface.

Figure 2-85 The Interface of IP Setup

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Table 2-30 The Menu Explanations of IP Setup

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Function

Menu

DHCP

On/Off

IP

addr

Settings Explanation

On

Off

Open the DHCP setting, allot the IP address dynamically Close the DHCP setting, set the IP address manually

Set the IP address

IP Mask Set the IP Mask

Gate Way Set the Gate Way

Instruction Open the DHCP：

Press DHCPon , allot the IP address dynamically. At this time, the IPAddr , IPmask and Gate way menu will hide.

DNS

Press Utility Æ I/O Æ LAN Æ DNS , enter the following interface.

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Figure 2-86 The Setting Interface of DNS

Table 2-31 The Menu Explanations of Setting DNS

User’s Guide for DG2000 Series

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Function

Menu

Settings Explanation

Host Set the Host Name

Domain Set the Domain

Server Set the Server Address

Host Name

Set the Host Name, it consists of letter, number and dash (“-”). Consult with your network administrator for the Host name you need. Use the knob and the direction button to select the character to set the host name (you can only use the keypad to enter the number). The Host name will be stored in the Non-Volatile Memory.

Domain Name

Set the Domain Name with letter, number, dash (“-”) and dot (“.”). Consult with your network administrator for the Domain name you need. Use the knob and direction button to select the character to set the domain name (you can only use the keypad to enter the number and dot). The Domain name will be stored in the Non-Volatile Memory.

Info

Press Utility Æ I/O Æ LAN Æ Info , the current system information is shown below.

Figure 2-87 The System Information

Instruction

If the DHCP is enabled and you want to use the DNS address that the DHCP Server returns, please set the Server to be “0.0.0.0”.

2. To Set GPIB

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The range of the GPIB interface address is 0~30, and the default value is “7”.

Press Utility Æ I/O Æ GPIB , enter the interface below.

Figure 2-88 The Interface of Setting the GPIB

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3. To Set RS232

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Make sure that the Baud Rate and the Parity match the computer. Besides, make sure that the RS232 cable is connected correctly. The I/O setting is stored in the Non-Volatile Memory, and will show when the power is on.

Press Utility Æ I/O Æ RS232 , enter the following interface.

Figure 2-89 The Setting Interface of Setting RS232

Table 2-32 The Menu Explanations of Setting RS232

Function

Menu

Baud Set the RS232 Baud Rate

Parity Set the RS232 Parity and the data digit

Baud Rate

Set the RS232 Baud Rate. Make sure that the Baud Rate matches the computer. The optional rates are: 115k, 57.6k, 38.4k, 19.2k, 9600, 4800, 2400, 1200. The default setting is 9600. The current setting is stored in the Non-Volatile Memory.

Parity

Set the Parity and the data digit of RS232. Make sure that the parity matches the computer. The optional settings are: Odd, Even and No Parity. The default setting is “No Parity”. The current setting is stored in the Non-Volatile Memory.

Settings Explanation

To Set the System

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Press Utility Æ System , enter the following interface.

Figure 2-90 The Operation Menu

Table 2-33 The Menu Explanations of System Setting

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Function

Menu

Lang Set the System Language

Display Set the parameter for the Screen Display

Beep

On/Off

Svr on/off

Format Set the data format

Setting

Key points: Power On

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Settings Explanation

On Open Beeper

Off Close Beeper

Activate the Screen Guard function. Screen

On

Guard will be on if no action is taken within 3 minutes. Press any button to return the display screen.

Off deactivate the Screen Guard function

PowOn: When the power is on, all the

PowOn

setting will return to the default value. Latest: When the power is on, all the setting will return to the latest setting.

Default Return all the setting into the default

Timer Choose the clock source as internal/external

User’s Guide for DG2000 Series

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The Setting is used when the instrument is powering on. Two choices are available: the default setting and the latest. Once selected, the setting will be used when the instrument restarts.

Beep

Activate or deactivate the sound when an error occurs from the front panel operation or the remote interface operation. Activate or deactivate any sound made by the button or knob on the front panel.

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1. Language Setting

The DG2000 Series Generator supports two languages: Chinese and English. To Select Language, press Utility and then Lang to select the language. Press Utility Æ System Æ Lang , change the current language.

Figure 2-91 The Interface of Language Setting

2. Display Control

Press Utility Æ System Æ Display , enter the following interface.

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Figure 2-92 The Interface of Display Setting

Table 2-34 The Menu Explanations of Display Setting

Function

Menu

Settings Explanation

Contra Set the Display Contrast Parameter

Light Set the Display Light Parameter

Invert Set the Invert Display

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User’s Guide for DG2000 Series

Rigol DG2041A, DG2021A User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Notices

The Introduction of DG2000 Series

Chapter 1 Getting Started

General Inspection

Handle Adjustment

The Front/Rear Panel

The DG2000 User Interface

To Set a Waveform

To Set Modulate/ Sweep/Burst

To Set Trigger/Output

To Use Digital Input

To Use Store/Utility/Help Function

Chapter 2 Operating Your Generator

The Menu/Graph Mode

To Set Sine Signals

To Set Square Signals

To Set Ramp Signals

To Set Pulse Signals

To Set Noise Signals

To Set Arbitrary Signals

To Generate the Modulated Waveform

To Generate Sweep

To Generate Burst

To Store and Recall

To Set the Utility Function