AFG-3021 > 신호발생기

주요 특징

• 1uHz to 20 or 30MHz, 16-bit resolution with 1 mVpp to 10 Vpp amplitude. 1 or 2 channel (s)

• 250 MSa/s sampling rate for higher time resolution arbitrary waveforms

• 8M Points/channel standard waveform memory

I• nput/output signal ground independent of housing and signal ground between channels also insulated.

• Synchronized phase operates up to 6 units and 12 channels

• Pulse waveform parameters can be set independently for more precise timing

• Harmonic signal generator

• Dual channel models support SUM modulation, coupling, tracking, and phase functions

• Built-in AM/FM/PM/FSK/PWM/SUM modulation, sweep and burst functions

• Provide USB/LAN/GPIB (optional) instrument control interface

The AFG-3000 series arbitrary function generators, including 20MHz/30MHz single channel and dual channel models,  are designed to meet industry, scientific research, and education applications. In the design of isolated output, all output channels are earth ground isolation, which is suitable for test applications of floating circuit. For instance, connecting an AFG-3000 with a power supply’s DC voltage, the maximum AC-DC cascaded output reaches+42V or -42V. Each channel of dual channel models can be operated independently or multi units can simultaneously function without taking grounding reference into consideration. Applications are, for instance, the ignition control or transmission device of automotive electronics. The series features sample rate of 250MSa/s, 16-bit resolution, and 8M point memory depth for arbitrary waveform generation. Users not only can save the edited waveforms to the memory to build arbitrary waveforms, but also rebuild waveformsby the AFG-3000’s built-in DSOLink function with a GW Instek digital storage oscilloscope.

The AFG-3000 series supports synchronized phase for multi channel operation up to 6 units and 12 channels. A reference input connector is available allowing an external 10 MHz time base to synchronize the internal clock and elevate the frequency output accuracy. The series supports frequency sweep and amplitude sweep that can also integrate other functions, including linear/logarithm, one-way (saw tooth)/two-way (triangle), continuous/single trigger/gatedtrigger to meet various application requirements by applying different sweep methods. Frequency sweep tests the frequency response of electronic components such as filter and low frequency amplifier. Amplitude sweep simulates vibration tests (requires a vibration tester), and it also conducts aging tests of various materials and linearity tests of low frequency amplifier.

The main features of the AFG-3000 series include output amplitude from 1mVpp to 10Vpp (connected with a 50 ohm load); frequency range from 1uHz to 20MHz or 30MHz; 1uHz frequency resolution; and built-in sine, square, pulse, triangle, ramp, DC voltage, harmonic and noise. The waveform width, rise edge time and fall edge time of pulse waveform can be adjusted flexibly. Pulse waveform, with duty cycle from 0.017% to 99.983%, can be applied as trigger signals.Users can conduct arbitrary editing via 65 built-in function waveforms. The series supports AM/FM/PM/FSK/PWM modulation, frequency sweep, amplitude sweep and burst to satisfy industrial application requirements. Dual channel models provide SUM modulation, coupling, tracking, and phase to meet the test requirements of differential signal, phase control and amplifier distortion. Built-in 8th harmonic signal generator simulates harmonic signal of switching power supplies and it also tests EMI power filter characteristics.The AFG-3000 series provides free arbitrary waveform editing software (AWES) for users to quickly edit waveforms from the built-in diagrams so as to execute measurements.

The AFG-3000 series comes with four models. Model number and channel (s) are listed as follows:

Circuit Design for Ground Isolation among Output/Input Terminal, Instrument Chassis, and Dual Channels

Channel 1, channel 2, reference 10 MHz input, synchronization and modulation input/output connector grounding are isolated from instrument chassis. The output channels of dual channel models are independently isolated. These connectors can sustain maximum isolation voltage up to ±42Vpk (DC+ AC peak value) to earth ground that is ideal for floating circuit tests. Multi units output can be executed without factoring in grounding reference issue. Thebuilt-in DC bias voltage of the AFG-3000 series can be applied on various waveforms. The DC bias voltage is ±5V under 50 ohm load. Automotive electronic applications such as ignition controller or transmission devices require higher DC bias voltage. As shown in the following diagrams, when the Voffset of the power supply is 32Vdc, the maximum output of the AFG is 20Vpp, and the maximum voltage output to the ground is 42V. If Voffset is 41Vdc, the maximum output of the AFG is 2Vpp and the maximum voltageoutput to the ground remains to be 42V. Therefore, an external power supply can be used to bring up the DC bias voltage to ±42Vpk (DC+ AC peak value).

Connection diagram for AFG connecting with power supply to increase D.C. bias.

The Vout of AFG is 20/2 Vpp when DC bias is 32/41 Vdc.

Test settings: power supply output -31.8V, and  AFG-3032 output 20Vpp, 1kHzz sine wave.

The test result obtained from an oscilloscope (high impedance load). The lowest voltage was -42.4V.

Multi Channel Synchronized Phase Operation

Users can implement multi channel synchronized-phase operation up to 6 units and 12 channels (AFG-3032/3022). There are two methods to execute synchronized phase applications. Under different multiple frequency settings, master unit can synchronize the phase of each channel of the slave units. At 10 MHz reference frequency input (REF IN) connector, users can input 10 MHz atomic clock frequency standard via external signal source to increase frequency outputaccuracy.

Method one uses reference frequency output (REF OUT) and reference frequency input (REF IN), 50 ohm BNC cable (RG-58A/U) and T type BNC connector to connect up to 6 units to conduct synchronized phase operation.

Method two uses reference frequency output (REF OUT) and reference frequency input (REF IN) ), 50 ohm BNC cable (RG-58A/U) to connect up to 4 units to conduct synchronized phase operation.

Harmonic Signal Generator

Harmonic signal generator simulates the harmonic signal of switching power supplies and conducts characteristics tests on EMI power filter. Users can set order number and phase for harmonic signals to obtain desired signals. The following diagrams show 8th harmonic signal.

Harmonic signal generator

Harmonic signal

Pulse Generator

The output frequency for pulse reaches 25 MHz and its duty cycle is from 0.017% to 99.983%. Users can set pulse width, duty cycle, rise edge time, fall edge time and edge time to support trigger signal. The following diagrams show settings for pulse signal.

Pulse Generator

Pulse

Versatile Output Waveform Selections

65 built-in function waveforms include engineering applications, medical electronics, mathematics, and standard waveforms such as sine, square, triangle, ramp, pulse, noise, harmonic, and DC voltage that allow users to easily select desired waveforms. Users can select and edit 65 function waveforms from the arbitrary function.

Sine

Square

Triangle

Ramp

Pulse

Noise

Harmonic

DC

Modulation Function

The series supports AM, FM, PM, FSK, PWM and SUM modulation. Modulation source can be from inside or outside. Applications include the baseband of communications systems, motor control and light adjustment.

AM

FM

PM

FSK

PWM

SUM

Burst Function

The series supports N-period or gated trigger. Phase angle, duration time, frequency, waveform infinite can be adjusted to meet non-continuous output applications.

Burst setting

Burst signal

Sweep Function

The series supports frequency sweep and amplitude sweep that can also integrate other functions, including linear/logarithm, one-way (saw tooth)/two-way (triangle) waveforms, continuous/single trigger/gated trigger to meet various application requirements by different sweep methods. Frequency sweep carries out tests on the frequency response of electronic components such as filter and low frequency amplifier. Amplitude sweep simulates vibration tests (requiresa vibration tester), and it also conducts aging tests of various materials and linearity tests of low frequency amplifier.

Amplitude sweep setting

Amplitude sweep signal

Frequency sweep setting

Frequency sweep signal

Flexible Arbitrary Waveform Editing 

Four methods to obtain arbitrary waveforms.

Front Panel Operation

Via single unit’s panel, arbitrary waveforms can be selected, edited, stored, recalled, output, triggered from 65 built-in waveforms.

CSV File Upload

Support CSV file upload produced by MATLAB and Excel.

Direct Waveform Reconstruction

Collocate with GDS series digital oscilloscopes to retrieve waveforms and upload them to arbitrary generator to achieve direct waveform reconstruction.

Arbitrary Waveform Editing PC Software

Use AWES to edit complex waveforms. The software supports waveform mathematical operation. The waveform series includes Uniform Noise, Gaussian Noise, Rayleigh Noise, various digital codes such as non zero code, Manchester and RS-232, etc.

Correlated Functions of Dual Channel Outputs    

AFG-3032/3022 models support independent channel or correlated channel applications. Four correlated functions are provided including SUM modulation, coupling, tracking, and phase.

1.  SUM modulation combines two signals and outputs the signal via one single channel. Combining noise and sine waveform to execute speaker’s distortion test is one of the applications.

2.  Coupling function arbitrarily sets ratio and difference for frequency and amplitude between two channels to realize a simultaneous effect for all parameters of dual channel. The example is amplifier using third order interpolation point (IP3) measurement to simulate signal output of two different frequency oscillators.

3.  Tracking function produces differential signal with same frequency, same amplitude, and 180 degree phase difference.

4.  Phase function arbitrarily sets phase parameters between two channels such as simulating sine/ cosine/square signal phase adjustment

제품 사양

AFG-3031

AFG-3032

AFG-3021

AFG-3022

채널

1CH

2CH

1CH

2CH

특징

I/O 커넥터 외피 vs 장비 섀시 절연 상태

CH 출력, SYNC 출력, 10MHz REF 입력, MOD 입력/출력의 커넥터 외피는 장비 섀시와 절연되어 있습니다. 절연 커넥터 외피의 최대 허용 전압은 ±42 Vpk (DC+ACPeak)입니다.

CH1/CH2 GND 절연상태

-

절연

-

절연

파형

기본 파형

Sine, Square, Triangle, Ramp, Pulse, Noise,Harmonic

임의파형

샘플링 속도

250MSa/s

반복 속도

125MHz

파형 길이

8M 포인트

진폭 분해능

16 비트

메모리

10세트 (세트 당 8M 포인트)*1

사용자 정의 출력 섹션

2 포인트~8M 포인트, 섹션 선택 가능

트리거

EXT

내장 임의파형

Sine, Square, Ramp, Sinc,Pulse, DC, Sin(x)/x,Exponential Rise, Exponential Fall, Negative Ramp, Absatan, Havercosine,Sinever, Abssin, Haversine, Stair_down, Abssinehalf, N_pulse, Stair_UD,Ampalt, Negramp, Stair_up, Attalt, Rectpuls1, Stepresp, Diric_even,Roundhalf, Trapezia, Diric_odd, Sawtoot, Tripuls1, Gauspuls1, Sinetra,Dlorentz, ln, Sqrt, Exporise, Lorentz, Xsquare, Expofall, Gauss, Since,Arccos, Arctan, Sech, Arccot, Arctanh, Sinh, Arccsc, Cosh,Tan, Arcsec, Cot,Tanh, Arcsin, Csc, Arcsinh, Sec, Barthannwin, Chebwin, Kaiser, Bartlett,Flattopwin, Triang, Blackman, Hamming, Tukeywin, Bohmanwin, Hann

주파수 특성

범위

Sine

1μHz~30MHz

1μHz~30MHz

1μHz~20MHz

1μHz~20MHz

Square

Pulse

1μHz~25MHz

1μHz~25MHz

1μHz~20MHz

1μHz~20MHz

Ramp

1μHz~1MHz

분해능

1μHz

정확도

안정도

±1ppm

0~50℃

±0.3ppm

18~28℃

에이징

±1ppm/year

허용오차

≤1μHz

출력 특성*2

진폭

범위

1mVpp~10Vpp

50Ω 부하

2mVpp~20Vpp

개방 회로(High Z)

정확도

±(설정값 1%)±1mVpp

1kHz, 50Ω 부하

분해능

0.1mV 또는 4디지트

평탄도

0.1dB

<10MHz 

0.2dB

10MHz~30MHz

* Sinewave relative to 1kHz, 50Ω 부하

단위

Vpp, Vrms, dBm

오프셋

범위

±5Vpk ac+dc

50Ω 부하

±10Vpk ac+dc

개방 회로(High Z)

정확도

(설정값 1%)+2mV+(진폭 0.5%)

파형 출력

임피던스

50Ω typ.

고정

>10MΩ

출력 차단 상태

보호

단락 회로 보호; 과부하 릴레이가 자동으로 출력을 차단

SYNC

레벨

TTL 호환

>1kΩ

출력

임피던스

50Ω nominal

정현파(SineWave) 특성

고조파(Harmonic) 왜곡*5

-60dBc

DC~1MHz, 진폭<3Vpp

-55dBc

DC~1MHz, 진폭>3Vpp

-45dBc

1MHz~5MHz, 진폭>3Vpp

-30dBc

5MHz~30MHz, 진폭>3Vpp

THD

<0.2%+0.1mVrms @ DC~20kHz

불요파(Spurious, non-harmonic) *5

-60dBc

DC~1MHz

-60dBc

DC~1MHz

-50dBc

1MHz~20MHz1MHz~30MHz

-50dBc

1MHz~20MHz

-50dBc+6dBc/octave

위상 잡음

<-110dBc typ.

10MHz, 15kHz band

구형파(SquareWave) 특성

상승/하강시간

≤8ns*3

듀티 비율

20.0%~80.0%

≤25MHz

20.0%~80.0%

≤20MHz

40.0%~60.0%

25MHz~30MHz

오버슈트

<5%

비대칭도

주기 1%+1ns

지터(Jitter)

0.01%+525ps

<2MHz 

0.1%+75ps

>2MHz

램프(Ramp) 특성

선형성

<(피크 출력 0.1%)

대칭성

0%~100%; 분해능 0.1%

펄스(Pulse)특성

펄스 폭

20ns~999.830s; 주기 ≧ 펄스폭-0.625 [(상승 시간-0.6ns)+(하강 시간-0.6ns)]

듀티 설정 범위

0.017%~99.983%

주기

40ns~1,000,000s

상승/하강 시간

9.32ns~799,900s (분해능 0.01ns 또는 3디지트)

분해능

0.00%

오버슈트

<5%

지터(Jitter)

100ppm+50ps

고조파(Harmonic)특성

고조파 차수

≤8

고조파 유형

Even, Odd, All, User; 진폭 및위상 설정 가능

AM 변조

반송 파형

Sine, Square, Triangle, Ramp, Pulse, ARB

변조 파형

Sine, Square, Triangle, Up Ramp, Down Ramp

변조 주파수

2mHz~20kHz

깊이

0.0%~120.0%

신호원

INT/EXT

FM 변조

반송 파형

Sine, Square, Triangle, Ramp

변조 파형

Sine, Square, Triangle, Up Ramp, Down Ramp

변조 주파수

2mHz~20kHz

피크 편차

DC~30MHz (분해능 1uHz)

DC~20MHz (분해능 1uHz)

신호원

INT/EXT

PM 변조

반송 파형

Sine, Triangle, Ramp

변조 파형

Sine, Square, Triangle, Up Ramp, Down Ramp

변조 주파수

2mHz~20kHz

위상 편차

0˚~360˚; 분해능0.1˚ 

신호원

INT

PWM 변조

반송 파형

Square

변조 파형

Sine, Square, Triangle, Up Ramp, Down Ramp

변조 주파수

2mHz~20kHz

편차

펄스폭 0%~100.0%; 분해능 0.01%

신호원

INT/EXT

SUM 변조

반송 파형

Sine, Triangle, Ramp, Pulse, Noise

변조 파형

Sine, Square, Triangle, Up Ramp, Down Ramp

변조 주파수

2mHz~20kHz

비율

반송 파형 진폭 0%~100.0%; 분해능 0.01%

신호원

INT/EXT

FSK 변조

반송 파형

Sine, Square, Triangle, Ramp

변조 파형

Square, 50% 듀티 비율

변조 주파수

2mHz~1MHz

주파수 범위

DC~30MHz

DC~20MHz

신호원

INT/EXT

Sweep

파형

주파수 스윕 : Sine, Square, Triangle,Ramp; 

진폭 스윕 :Sinew, Square, Triangle, Ramp, Pulse, Noise, ARB

유형

주파수 스윕/진폭 스윕

기능

LIN/LOG

방향

Up/Down

Start/Stop 주파수

1uHz~30MHz

1uHz~20MHz

Sweep 시간

1ms~500s; 분해능 1ms

Trigger 모드

Single, EXT, INT

Trigger 신호원

INT/EXT

Burst

파형

Sine, Square, Triangle, Ramp, Pulse, Noise

주파수

1uHz~30MHz*4

1uHz~20MHz*4

Burst 카운트

1~1,000,000 Cycle/Infinite

Start/Stop 위상

-360˚~+360˚; 분해능 0.1˚

내부 주기

1us~500s

Gate 신호원

EXT TRIGGER; Pulse 파형은 GATE 모드에서만사용 가능

Trigger 신호원

Single, EXT, INT

Trigger 지연

N-Cycle, Infinite : 0s~100s; 분해능 1us

EXT MOD 입력

유형

AM, FM, PWM

전압 범위

±5V full scale

입력 임피던스

10kΩ

주파수

DC~20kHz

MOD 출력

지원

지원

-

지원

-

유형

AM, FM, PM, PWM, SUN, Sweep

출력 레벨

≥1Vpp

출력 임피던스 

>10kΩ typ.

EXT TRIGGER 입력

유형

FSK, Sweep, Burst, N Cycle ARB

입력 레벨

TTL 호환

슬로프

상승/하강 (선택 가능)

펄스 폭

>100ns

입력 주파수

DC~1MHz

입력 임피던스

10kΩ, DC coupled

지연 시간

Sweep : <10us (typ.); Burst : <100ns(typ.)

지터(Jitter)

Sweep : 2.5us; Burst : 1ns, Pulse 제외, 300ps

10MHz REF 출력

출력 전압

1Vpp/50Ω 구형파

출력 임피던스

50Ω, AC coupled

출력 주파수

10MHz

10MHz REF 입력

입력 전압

0.5Vpp~5Vpp

입력 임피던스

1kΩ, unbalanced, AC coupled

입력 주파수

10MHz±10Hz

파형 

정현파 또는 구형파 (50±5% 듀티)

GND 절연

최대 42Vpk

EXT SYNC

위상 지연 (최대)

직렬 연결 : 39+(N-2)x39±25ns; 병렬 연결 : (N-1)x6±25ns; (N=연결된 장치의 수)

* 연결 장치 최대 개수 : 직렬 연결 4, 병렬연결 6

적용 가능 기능

Sine, Square, Triangle, Pulse, Ramp, Harmonic,MOD, Sweep, Burst

기타

저장/호출

10세트 설정 메모리

인터페이스

USB(Host/Device), LAN, GPIB(옵션)

디스플레이

4.3인치 TFT LCD, 480 x 272 x 3(RGB)

AC 입력 전원

AC 100~240V, 50~60Hz

소모 전력

50VA

85VA

50VA

85VA

치수 및 무게

265(W) x 107(H) x 374(D) mm, 약4kg

*1 총 10개의 파형을 저장할 수 있습니다. 저장되는 각 파형은 최대 8M 포인트로 구성될 수 있습니다.

*2 0℃~28℃ 범위의 외부 동작 시에는 1℃ 당 출력 진폭 및 오프셋 사양의 1/10을 추가합니다.

*3 Edge 시간은 주파수가 커질수록 감소합니다.

*4 25MHz 이상의 Sine, Square 파형은 “Infinite” 카운트만 허용됩니다.

*5 낮은 진폭에서 고조파(Harmonic) 왜곡과 불요파(Spurious) 잡음은 -70 dBm으로 제한됩니다.