AFG-3000 Series User Manual

AFG-3000 Series User Manual

Arbitrary Function Generator

AFG-2000 Series

USER MANUAL

GW INSTEK PART NO. 82AF-21200E01

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will Corporation.

The information in this manual was correct at the time of printing.

However, Good Will continues to improve its products and therefore reserves the right to change the specifications, equipment, and maintenance procedures at any time without notice.

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

TABLE OF CONTENTS

Table of Contents

S AFETY INSTRUCTIONS .................................. 3

G ETTING STARTED ......................................... 8

Main Features ..................................................................... 8

Panel Overview .................................................................. 10

Setting up the Function Generator .................................... 17

Q UICK REFERENCE ....................................... 19

How to use the Digital Inputs ........................................... 20

Selecting a Waveform ........................................................ 22

ARB ................................................................................... 24

Modulation ........................................................................ 25

Sweep (2100 series only) ................................................... 29

Counter (2100 series only) ................................................ 31

Save/Recall ........................................................................ 32

Default Settings ................................................................ 33

O PERATION .................................................. 35

Select a Waveform ............................................................. 37

Setting the Frequency ........................................................ 37

Setting the Amplitude........................................................ 38

Setting the DC Offset ........................................................ 39

Setting the Duty Cycle/Symmetry ...................................... 40

Amplitude Modulation (AM) (AFG-2100 Series) ............... 42

Frequency Modulation (FM) (AFG-2100 Series) ................. 50

Frequency Shift Keying (FSK) Modulation (AFG-2100 Series)

.......................................................................................... 59

Frequency Sweep (AFG-2100 Series) .................................. 67

Creating an Arbitrary Waveform ......................................... 74

Using the Frequency Counter............................................. 76

Using the SYNC Output Port ............................................. 78

1

AFG-2000 Series User Manual

Save and Recall State/ARB Waveform ................................ 82

R EMOTE INTERFACE ..................................... 84

Selecting the USB Remote Interface .................................. 86

Command Syntax ............................................................... 87

Command List ................................................................... 93

System Commands ............................................................ 95

Status Register Commands ................................................ 96

Apply Commands .............................................................. 97

Output Commands .......................................................... 103

Amplitude Modulation (AM) Commands ......................... 112

AM Overview ................................................................... 112

Frequency Modulation (FM) Commands .......................... 116

FM Overview ................................................................... 116

Frequency-Shift Keying (FSK) Commands ........................ 121

FSK Overview .................................................................. 121

Frequency Sweep Commands........................................... 125

Sweep Overview .............................................................. 125

Arbitrary Waveform Commands ....................................... 130

Arbitrary Waveform Overview .......................................... 130

Save and Recall Commands ............................................. 133

A PPENDIX ................................................... 135

Error Messages ............................................................... 135

AFG-2000 Series Specifications ....................................... 137

EC Declaration of Conformity .......................................... 141

I NDEX ......................................................... 142

2

SAFETY INSTRUCTIONS

S

AFETY INSTRUCTIONS

This chapter contains important safety instructions that should be followed when operating and storing the function generator. Read the following before any operation to ensure your safety and to keep the function generator in the best condition.

Safety Symbols

These safety symbols may appear in this manual or on the instrument.

WARNING

Warning: Identifies conditions or practices that could result in injury or loss of life.

CAUTION

Caution: Identifies conditions or practices that could result in damage to the function generator or to other objects or property.

DANGER High Voltage

Attention: Refer to the Manual

Protective Conductor Terminal

Earth (Ground) Terminal

DANGER Hot Surface

3

AFG-2000 Series User Manual

Double Insulated

Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased.

Safety Guidelines

General

Guideline

CAUTION

Do not place heavy objects on the instrument.

Do not place flammable objects on the instrument.

Avoid severe impact or rough handling that may damage the function generator.

Avoid discharges of static electricity on or near the function generator.

Use only mating connectors, not bare wires, for the terminals.

The instrument should only be disassembled by a qualified technician.

Power Supply

WARNING

(Measurement categories) EN 61010-1:2010 specifies the measurement categories and their requirements as follows. The instrument falls under category II.

Measurement category IV is for measurement performed at the source of a low-voltage installation.

Measurement category III is for measurement performed in a building installation.

Measurement category II is for measurement performed on circuits directly connected to a low voltage installation.

Measurement category I is for measurements performed on circuits not directly connected to Mains.

AC Input voltage: 100 ~ 240V AC, 50 ~ 60Hz.

Connect the protective grounding conductor of the AC power cord to an earth ground to prevent electric shock.

4

SAFETY INSTRUCTIONS

Fuse

WARNING

Cleaning the function generator

Operation

Environment

Fuse type: F1A/250V.

Only qualified technicians should replace the fuse.

To ensure fire protection, replace the fuse only with the specified type and rating.

Disconnect the power cord and all test leads before replacing the fuse.

Make sure the cause of fuse blowout is fixed before replacing the fuse.

Disconnect the power cord before cleaning the function generator.

Use a soft cloth dampened in a solution of mild detergent and water. Do not spray any liquid into the function generator.

Do not use chemicals containing harsh products such as benzene, toluene, xylene, and acetone.

Location: Indoor, no direct sunlight, dust free, almost non-conductive pollution (Note below) and avoid strong magnetic fields.

Relative Humidity: < 80%

Altitude: < 2000m

Temperature: 0°C to 40°C

(Pollution Degree) EN 61010-1:2010 specifies pollution degrees and their requirements as follows. The function generator falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.

Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has no influence.

Pollution degree 2: Normally only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

Pollution degree 3: Conductive pollution occurs, or dry, nonconductive pollution occurs which becomes conductive due to condensation which is expected. In such conditions, equipment is normally protected against exposure to direct sunlight,

5

Storage environment

Disposal

AFG-2000 Series User Manual

 precipitation, and full wind pressure, but neither temperature nor humidity is controlled.

Location: Indoor

Relative Humidity: < 70%

Temperature: -10°C to 70°C

Do not dispose this instrument as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Please make sure discarded electrical waste is properly recycled to reduce environmental impact.

6

SAFETY INSTRUCTIONS

Power cord for the United Kingdom

When using the function generator in the United Kingdom, make sure the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the following code:

Green/ Yellow: Earth

Blue:

Brown:

Neutral

Live (Phase)

As the colours of the wires in main leads may not correspond with the coloured marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth terminal marked with either the letter E, the earth symbol or coloured

Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the supplier.

This cable/appliance should be protected by a suitably rated and approved

HBC mains fuse: refer to the rating information on the equipment and/or user instructions for details. As a guide, a cable of 0.75mm

2

should be protected by a 3A or 5A fuse. Larger conductors would normally require

13A types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off the mains power and remove the cable, any fuses and fuse assemblies. All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard.

7

AFG-2000 Series User Manual

G

ETTING STARTED

The Getting started chapter introduces the function generator’s main features, appearance and introduces a quick instructional summary of some of the basic functions. For comprehensive operation instructions, please see the operation chapter.

Main Features

Model name

AFG-2005 AFG-2105 AFG-2012 AFG-2112 AFG-2025 AFG-2125

Frequency Range 0.1Hz~5MHz 0.1Hz~12MHz 0.1Hz~25MHz

Output waveform Sine, Square, Ramp, Noise, ARB

Amplitude range

Variable Offset

Sweep operation

AM

FM

FSK

Frequency Counter

Variable Duty

SYNC

output

Save/Recall

0.1Hz~20MHz

1 mVpp to 10 Vpp (into 50Ω)

2 mVpp to 20 Vpp (open-circuit)

20MHzHz~25MHz

1 mVpp to 5 Vpp (into 50Ω)

2 mVpp to 10 Vpp (open-circuit)

8

ARB

USB Interface

Performance

Features

Interface

GETTING STARTED

DDS technology using an FPGA provides high resolution waveforms

25MHz DDS (Direct Digital Synthesis) signal output series

0.1Hz resolution

Full Function Arbitrary Waveform Capability

20 MSa/s sample rate

10 MHz repetition rate

4 k-point waveform length

10-bit amplitude resolution

Ten 4k waveform memories

Sine, Square, Ramp, Noise

Int/Ext AM, FM, FSK modulation

Modulation/sweep signal output

Save/recall 10 groups of setting memories

Output overload protection

ARB (Arbitrary Waveform) can be edited with

PC software

USB interface as standard

3.5 inch LCD

9

AFG-2000 Series User Manual

Panel Overview

AFG-2105/2112/2125 Front Panel

LCD Display Number pad

Scroll Wheel Arrow keys SYNC output port

AFG-2125

Arbitrary Function Generator

Function keys

FUNC

FREQ

AMPL

7

4

8

5

9

6

OFST

DUTY

Point

Value

ARB

1 2 3

Enter

0

/

OUTPUT

Save/Recall

Hz/Vpp

Shape

AM

INT/EXT kHz/Vrms

DEP/DEV

FM

Hop

MHz/dBm

Rate

FSK

LIN/LOG

%

Start/Stop

Sweep

Shift

Gate

Count

SYNC

MAIN

50 W

POWER

50

W

MAIN output port

Enter key

ARB keys Operation keys

Output control key

AFG-2005/2012/2025 Front Panel

Power button

LCD Display Number pad

Scroll Wheel Arrow keys SYNC output port

AFG-2025

Arbitrary Function Generator

Function keys

FUNC

FREQ

AMPL

OFST

DUTY

7

4

1

0

8

5

2

9

6

3

/

Point

Value

ARB

Save/Recall

Hz/Vpp kHz/Vrms MHz/dBm

Enter

OUTPUT

% Shift

SYNC

MAIN

50

W

POWER

50

W

MAIN output port

Enter key

ARB keys Operation keys

Output control key

Power button

10

LCD display

Keypad

Scroll Wheel

GETTING STARTED

3.5 inch, 3 color LCD display.

7

4

1

8

5

2

9

6

3

The digital keypad is used to enter values and parameters. The keypad is often used in conjunction with the selection keys and variable knob.

0

/

The scroll wheel is used to edit values and parameters in steps of

1 digit. Used in conjunction with the arrow keys.

Arrow keys

Output ports

Enter key

Power button

Output control key

Operation keys

SYNC

MAIN

50

W

Decrease Increase

Used to select digits when editing parameters.

SYNC output port (50Ω impedance).

Main output port (50Ω impedance).

50

W

Enter

Used to confirm input values.

POWER

Turns the instrument power on/off.

OUTPUT

Turns the output on/off.

Shift

Hz/Vpp

Selects Hz or Vpp units.

+

Save/Recall

Hz/Vpp

Saves or recalls waveforms from memory. kHz/Vrms

Selects kHz or Vrms units.

11

12

AFG-2000 Series User Manual

Shift

INT/EXT

+ kHz/Vrms

Sets the source to internal or external for the modulation and

FSK functions*.

Shift

MHz/dBm

Selects MHz or dBm units.

Hop

+

MHz/dBm

Sets the ―Hop‖ frequency for FSK modulation*.

Shift

%

+

%

Selects % units.

LIN/LOG

Sets the sweep to linear or logarithmic*.

Shift

Shift

Shift

AM

Shape

AM

The shift key is used to select the secondary functions on the operation keys.

The AM key is used to turn AM modulation on/off*.

Selects the modulation waveform*.

+

FM

The FM key is used to turn FM modulation on/off*.

+

DEP/DEV

FM

Selects the modulation depth or the frequency deviation*.

Shift

Shift

FSK

Selects FSK modulation*.

Rate

+

FSK

Sweep

Start/Stop

Sets the AM, FM, FSK modulation and sweep function rate*

Selects the Sweep function*.

Sets the Start or Stop frequency*.

Sweep

+

Count

Turns the frequency counter on/off*.

GETTING STARTED

ARB edit keys

Function keys

Shift

+

Point

Value

ARB

FUNC

FREQ

Gate

Count

Sets the frequency counter gate time*.

Arbitrary waveform editing keys.

The Point key sets the ARB point numbers.

The Value key sets the amplitude value of the selected point.

The FUNC key is used to select the output waveform type:

Sine, Square, Ramp, Noise, ARB.

Sets the frequency of the selected waveform.

AMPL

OFST

Sets the amplitude of the selected waveform.

The OFST sets the DC offset for the selected waveform.

DUTY

The DUTY key sets the duty cycle of square and ramp waveforms.

*indicates functions/features for the AFG-2105/2112/2125 only.

13

AFG-2105/2112/2125 Rear Panel

MOD output

AFG-2000 Series User Manual

WARNING

TO AVOID ELECTRIC SHOCK THE POWER CORD PROTECTIVE

GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND.

NO OPERATOR SERVICEABLE COMPONENTS INSIDE.

DO NOT REMOVE COVERS. REFER SERVICING TO

QUALIFIED PERSONNEL.

AC 100-240V

50-60Hz 25VA

SER.NO. LABEL

OUTPUT

MOD

INPUT

Counter

Trigger MOD

Power socket Mini USB port

AFG-2005/2012/2025 Rear Panel

Trigger input

Counter input

MOD input

WARNING

TO AVOID ELECTRIC SHOCK THE POWER CORD PROTECTIVE

GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND.

NO OPERATOR SERVICEABLE COMPONENTS INSIDE.

DO NOT REMOVE COVERS. REFER SERVICING TO

QUALIFIED PERSONNEL.

AC 100-240V

50-60Hz 25VA

SER.NO. LABEL

Power socket

MOD output

Counter input

MOD input

Trigger input

Mini USB B port

OUTPUT

MOD

Trigger

Mini USB port

INPUT

Counter

MOD

Modulation output port.

Counter input port.

Modulation input port.

Trigger input port.

The Mini-B type USB connector is used to connect the function generator to a PC for remote control.

14

Power Socket

Input

GETTING STARTED

AC 100-240V

50-60Hz 25VA

Power input: 100~240V AC

50~60Hz.

Display

Waveform type

Counter settings

Frequency display

USB icon

Secondary parameter display

Modulation, sweep, counter menu

Waveform type

Counter settings

USB icon

Press the function key to cycle through different output waveforms.

Gate time counter settings*.

Shows the USB interface status.

Frequency

Display

Secondary parameter display

Displays the main waveform frequency settings.

Displays secondary waveform parameters and settings.

15

AFG-2000 Series User Manual

Modulation, sweep, counter menu

Displays the modulation, sweep and counter functions as well as the modulating waveform and source*.

*indicates functions/features for the AFG-2105/2112/2125 only.

16

GETTING STARTED

Setting up the Function Generator

Background

This section describes how adjust the handle and power up the function generator.

Adjusting the stand

Pull out the handle sideways and rotate it.

AFG-2125

Arbitrary Function Generator

FUNC

7 8 9

FREQ

4 5 6

AMPL

OFST

DUTY

1

0

Point

Value

ARB

Save/Recall

Hz/Vpp

Shape

AM

2 3

Enter

/

INT/EXT kHz/Vrms

DEP/DEV

FM

OUTPUT

Hop

MHz/dBm

Rate

FSK

LIN/LOG

%

Start/Stop

Sweep

Shift

Gate

Count

OUTPUT

SYNC

MAIN

POWER

50 W

50 W

Place the AFG horizontally.

Place the handle upright to tilt the stand.

Place the handle vertically to hand carry.

17

Power Up

AFG-2000 Series User Manual

1. Connect the power cord to the socket on the rear panel.

2. Press the power button on the front panel.

POWER

3. The instrument will turn on and load the

default settings (see page 33 for default

settings).

The function generator is now ready to be used.

18

QUICK REFERENCE

Q

UICK REFERENCE

This chapter lists operation shortcuts and default factory settings.

Use this chapter as a handy reference for instrument functions. This chapter is to be used as a quick reference; for detailed explanations on parameters, settings and limitations, please see the operation

chapter (page 35) or specifications (page 137).

How to use the Digital Inputs ........................................... 20

Selecting a Waveform ........................................................ 22

Sine Wave ............................................................................. 22

Square Wave ......................................................................... 22

Ramp Wave .......................................................................... 23

ARB ................................................................................... 24

ARB - Points .......................................................................... 24

Modulation ........................................................................ 25

AM (2100 series only) .......................................................... 25

FM (2100 series only) .......................................................... 26

FSK Modulation (2100 series only) ..................................... 27

Sweep (2100 series only) ................................................... 29

Counter (2100 series only) ................................................ 31

Save/Recall ........................................................................ 32

Save ...................................................................................... 32

Recall .................................................................................... 32

Default Settings ................................................................ 33

19

QUICK REFERENCE

How to use the Digital Inputs

Background

The AFG-2000 has three main types of digital inputs: the number pad, arrow keys and the scroll wheel. The following instructions will show you how to use the digital inputs to edit parameters.

1. First select the function that must be edited pressing one of the function or ARB keys. The selected function will flash.

AFG-2025

Arbitrary Function Generator

Function keys

FUNC

FREQ

AMPL

OFST

DUTY

Point

Value

ARB

7

4

1

0

8

5

2

9

6

3

/

Save/Recall

Hz/Vpp kHz/Vrms MHz/dBm

Enter

OUTPUT

% Shift

SYNC

MAIN

50

W

POWER

50

W

ARB keys

2. To edit a parameter, use the arrow keys to move the cursor to the digit that needs to be edited.

cursor

20

QUICK REFERENCE

3. Use the scroll wheel to increment the parameter by the resolution of the digit under the cursor.

In the example above, the scroll wheel will increment the parameter in 0.1 volt increments.

Clockwise increases the value, counterclockwise decreases the value.

4. Press the Enter key to confirm the new parameter value.

5. Alternatively, the number pad can be used to set the value of the selected parameter.

1

0

7

4

Enter

8

5

2

9

6

3

/

6. To finish editing with the number pad, select the unit with one of the unit keys.

(Hz, kHz, MHz, Vpp,

Vrms, dBm, %)

Hz/Vpp kHz/Vrms

MHz/dBm

%

21

AFG-2000 Series User Manual

Selecting a Waveform

Sine Wave

Example: Sine Wave, 10kHz, 1Vpp, 2Vdc

Output

MAIN

50

W

1. Press the FUNC key repeatedly to select the Sine wave.

FUNC

2. Press FREQ > 1 > 0

> kHz.

FREQ

1

0 kHz/Vrms

3. Press AMPL > 1 >

Vpp.

4. Press OFST > 2 >

Vpp.

AMPL

OFST

5. Press the OUTPUT key.

OUTPUT

1

Hz/Vpp

2

Hz/Vpp

Square Wave

Example: Square Wave, 10kHz, 3Vpp, 75% duty cycle

Output

MAIN

50

W

1. Press the FUNC key repeatedly to select the Square wave.

FUNC

2. Press FREQ > 1 > 0

> kHz.

FREQ

1

0 kHz/Vrms

22

QUICK REFERENCE

3. Press AMPL > 3 >

Vpp.

AMPL

4. Press DUTY > 7 > 5

> %.

DUTY

5. Press the output key.

OUTPUT

7

3

Hz/Vpp

5

%

Ramp Wave

Example: Ramp Wave, 10kHz, 3Vpp, 25% symmetry

Output

MAIN

50

W

1. Press the FUNC key repeatedly to select the Ramp wave.

FUNC

2. Press FREQ > 1 > 0

> kHz.

FREQ

1

0 kHz/Vrms

3. Press AMPL > 3 >

Vpp.

AMPL

4. Press DUTY > 2 > 5

> %.

DUTY

5. Press the OUTPUT key.

OUTPUT

2

3

Hz/Vpp

5

%

23

AFG-2000 Series User Manual

Save/Recall

Save

Example: Save waveform to memory.

1. Press Shift >

Save/Recall. Select

Save.

2. Turn the scroll wheel and choose a save number.

Shift

Save/Recall

+

Hz/Vpp

3. Press Enter to confirm the save file number.

Enter

Recall

Example: Recall waveform from memory.

1. Press Shift >

Save/Recall. Select

Recall.

2. Turn the scroll wheel and choose a saved file number.

3. Press Enter to confirm the recall.

Shift

Save/Recall

+

Hz/Vpp

Enter

32

QUICK REFERENCE

Default Settings

The default settings appear each time the power is turned on.

Output Config.

Function

Frequency

Amplitude

Offset

Output units

Output terminal

Sine wave

1kHz

100mVpp

0.00Vdc

Vpp

50Ω

Modulation

(AM/FM/FSK)

Carrier Wave 1kHz Sine wave

Modulation waveforms 100Hz Sine wave

AM Depth

FM Deviation

100%

10Hz

FSK Hop Frequency

FSK Frequency

Modulation Status

100Hz

500Hz

Off

Sweep

Start/Stop frequency

Sweep time

Sweep rate

Sweep type

Sweep status

100Hz/1kHz

1s

100Hz

Linear

Off

System settings

Power off signal

Display mode

Error queue

On

On cleared

33

AFG-2000 Series User Manual

Memory settings (ARB) No change

Output

Interface config.

USB

Calibration

Calibration Menu

Off

CDC

Restricted

34

OPERATION

O

PERATION

The Operation chapter shows how to output basic waveforms and create ARB waveforms. The AFG-2105/ 2112/ 2125 can also perform advanced functions such as modulation, sweep, FSK and counter functions.

Select a Waveform ............................................................. 37

Sine, Square, Ramp, Noise Waveform................................. 37

Setting the Frequency ........................................................ 37

Setting the Amplitude........................................................ 38

Setting the DC Offset ........................................................ 39

Setting the Duty Cycle/Symmetry ...................................... 40

Amplitude Modulation (AM) (AFG-2100 Series) ............... 42

Selecting AM Modulation .................................................... 43

AM Carrier Waveform .......................................................... 43

Setting the Carrier Frequency............................................... 44

Setting the Carrier Amplitude .............................................. 45

Setting the Modulating Wave Shape ................................... 46

Setting the Modulation Frequency (Rate) ........................... 46

Modulation Depth ................................................................ 47

Setting the Modulation Source ............................................ 49

Frequency Modulation (FM) (AFG-2100 Series) ................. 50

Selecting FM Modulation ..................................................... 51

FM Carrier Waveform ........................................................... 51

Setting the Carrier Frequency............................................... 52

Setting the Carrier Amplitude .............................................. 53

Setting the Modulating Wave Shape ................................... 54

Setting the Modulation Frequency (Rate) ........................... 55

Frequency Deviation ............................................................. 56

Setting the Modulation Source ............................................ 57

Frequency Shift Keying (FSK) Modulation (AFG-2100 Series)

.......................................................................................... 59

Selecting FSK Modulation .................................................... 60

FSK Carrier Waveform .......................................................... 60

FSK Carrier Frequency .......................................................... 61

35

AFG-2000 Series User Manual

Setting the Carrier Amplitude .............................................. 62

Setting the Hop Frequency .................................................. 63

FSK Rate ............................................................................... 64

Setting the FSK Source ........................................................ 65

Frequency Sweep (AFG-2100 Series) .................................. 67

Selecting Sweep ................................................................... 68

Setting Start and Stop Frequency ........................................ 68

Sweep Mode ......................................................................... 70

Sweep Rate ........................................................................... 71

Setting the Sweep Source (Trigger) ..................................... 72

Creating an Arbitrary Waveform ......................................... 74

Using the Frequency Counter ............................................. 76

Selecting the Frequency Counter Function ......................... 76

Selecting the Gate Time ....................................................... 77

Using the SYNC Output Port ............................................. 78

Connecting the SYNC Output Port ..................................... 78

SYNC Output Signal ............................................................ 78

Save and Recall State/ARB Waveform ................................ 82

36

OPERATION

Select a Waveform

The AFG-2000 can output four standard waveforms: sine, square, ramp and noise waveforms.

Sine, Square, Ramp, Noise Waveform

Panel Operation

1. Press the FUNC key repeatedly to select a standard waveform (Sine,

Square, Ramp, Noise).

Example:

Sine wave

FUNC

Note

The modulation, FSK, sweep and counter functions must be disabled before a standard waveform can be output.

Setting the Frequency

Panel Operation

1. Press the FREQ key.

FREQ

2. The FREQ icon will flash in the frequency display area.

37

Range

Example:

FREQ = 1kHz

AFG-2000 Series User Manual

3. Use the arrow

keys, scroll wheel and Enter key to edit the frequency.

Enter

Use the keypad and the relevant

unit key to enter a new frequency.

7

4

1

0

8

5

2

9

6

3

/

Hz/Vpp kHz/Vrms

MHz/dBm

Sine 0.1Hz ~ 25MHz*

Square 0.1Hz ~ 25MHz*

Ramp 0.1Hz ~ 1MHz

*limited to 5MHz for the AFG-2005/2105,

12MHz for the AFG-2012/2112.

Setting the Amplitude

Panel Operation

1. Press the AMPL key.

AMPL

2. The AMPL icon will flash in the secondary display area.

38

OPERATION

Range

Example:

AMPL= 1Vpp

3. Use the arrow

keys, scroll wheel and Enter key to edit the amplitude.

Enter

Use the keypad and the relevant

unit key to enter a new amplitude.

7

4

1

8

5

2

9

6

3

Hz/Vpp kHz/Vrms

0

/

MHz/dBm

No load 2mVpp~20Vpp

2mVpp~10Vpp for 20MHz – 25MHz

50Ω Load 1mVpp~10Vpp

1mVpp~5Vpp for 20MHz – 25MHz

Setting the DC Offset

Panel Operation

1. Press the OFST key.

OFST

2. The OFST icon will flash in the secondary display area.

39

Range

Example:

OFST= 1VDC

AFG-2000 Series User Manual

3. Use the arrow

keys, scroll wheel and Enter key to edit the offset.

Enter

Use the keypad and the Vpp key to enter a new offset.

7

4

8

5

9

6

1 2 3

Hz/Vpp

0 /

No Load (AC+DC) ±10Vpk

±5 Vpk for 20MHz–25MHz

50Ω Load (AC+DC) ±5 Vpk

±2.5 Vpk for 20MHz–25MHz

Setting the Duty Cycle/Symmetry

Background

The DUTY key sets the duty cycle or symmetry of the standard square or ramp waveforms.

Panel Operation

1. Ensure a square or ramp waveform is selected.

Page 37

2. Press the DUTY key.

DUTY

3. The duty icon will flash in the secondary display area.

40

OPERATION

Duty Cycle Range

4. Use the arrow

keys, scroll wheel and Enter key to edit the duty cycle/symmetry.

Enter

Use the keypad and the % key to enter a new duty cycle/symmetry.

≤ 100kHz

7

4

1

8

5

2

9

6

3

0

/

1.0% ~ 99.9%

%

≤ 5MHz

≤ 10MHz

≤ 25MHz

20.0% ~ 80.0%

40.0 ~ 60.0%

50.0% (fixed)

10% 50% 90%

Symmetry Range All frequencies 0% ~ 100%

0% 50% 100%

Example:

DUTY= 50.0%

41

AFG-2000 Series User Manual

Using the SYNC Output Port

Connecting the SYNC Output Port

Background

The SYNC output port is used as a synchronization signal for function outputs. All the output signals apart from the noise output function have a synchronization signal.

Connection

Note

Connect a BNC cable from the

SYNC output port on the front panel to the desired input device.

SYNC

50

W

The SYNC signal is output even when the main output is not output.

SYNC Output Signal

SYNC Output For

Sine Wave

SYNC output: TTL square waveform with a 50% duty cycle. The SYNC output is at a logically high level when the sine output is positive.

Output diagram

Sine output

0V

SYNC output

0V

78

OPERATION

SYNC Output For

Square Wave

SYNC output: TTL square waveform with a duty cycle corresponding to the duty cycle of the output square wave. The SYNC output is at a logically high level when the square wave output is positive.

Output diagram

Square wave output

0V

SYNC output

0V

SYNC Output For

Ramp Wave

SYNC output: TTL square waveform with a 50% duty cycle. The SYNC output is at a logically high level when the sine output is positive.

Output diagram

Ramp wave output

0V

SYNC output

0V

SYNC Output For

ARB Wave

SYNC output: A single TTL positive pulse at the start of each ARB period (pulse width = 1/sample rate).

Output diagram

ARB output 0V

SYNC output

0V

79

AFG-2000 Series User Manual

SYNC Output For

AM

SYNC output: TTL square waveform with a 50% duty cycle. The SYNC output is at a logically high level when the modulated output is positive.

Output diagram

AM output

0V

SYNC output

0V

SYNC Output For

FM

SYNC output: TTL square waveform with a 50% duty cycle. The SYNC output is at a logically high level when the modulated output is positive (The

SYNC output is synchronized to the modulated output frequency).

Output diagram

FM output 0V

SYNC output

0V

80

OPERATION

SYNC Output For

FSK

SYNC output: TTL square waveform with a 50% duty cycle. The SYNC output is at a logically high level when the modulated output is positive (The

SYNC output is synchronized to the modulated output frequency).

Output diagram

FSK output 0V

SYNC output

0V

SYNC Output For

Sweep

SYNC output: TTL square waveform. The SYNC output is at a logically high level when the sweep output is positive (The SYNC output is synchronized to the sweep output frequency).

Output diagram

Sweep output 0V

SYNC output

0V

81

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