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AFG 200/100


  • Frequency range: 1uHz~25MHz
  • 1uHz frequency resolution
  • Built-in 120 MSa/s, 10 bit resolution and arbitrary waveform editing function with 4k point memory
  • Dual channel models support coupling, tracking, and phase functions
  • Square waveform can adjust the duty cycle from 1% to 99%.
  • Support various arbitrary waveform editing methods.
  • Built-in AM/FM/PM/FSK/SUM(AFG-225/225P) modulation, sweep and burst functions
  • USB interface signal control
  • AFG-125P/225P provide three DC power selections


GW Instek launches the brand new AFG-100/200 series 25MHz USB modular arbitrary function generator with four models for selections. The AFG-100/200 series arbitrary function generator with many unique features such as light weight, handy, and USB interface compatible is an ideal choice for the applications at the general laboratories in applying stand-alone operation or collocation with the GDS-2000A series digital oscilloscope.

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AFG-225P Front Panel AFG-225P Rear Panel

The main features of the AFG-100/200 series are output amplitude of 2.5Vpp (connecting with a load of 50 ohms), frequency range reaching 25MHz, frequency resolution of 1uHz, and built-in sine waveform, square waveform, triangle waveform, and noise signal. Square waveform can adjust the duty cycle from 1% to 99% and it can be utilized as pulse signal. Users, via the GDS-2000A FG APP, can select from the 66 built-in function waveforms to conduct arbitrary waveform editing. The AFG-100/200 series, with functions of AM/FM/PM/FSK/SUM modulation, frequency sweep, burst and coupling, is suitable for various communications applications.

The AFG-100/200 series collocates with the FG APP of GDS-2000A digital oscilloscope through USB interface. While conducting stand-alone operation, the AFG-100/200 series utilizes USB interface, which allows users to quickly set up their required tests by the simple connection feature. AWES (arbitrary waveform editing software) PC software is provided to enter settings speedily and easily for measurement. Users can select required waveforms from arbitrary waveform editor.

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1. Stand-alone operation with PC software 2. Collocation with the GDS-2000A series DSO operation


MODEL NUMBER   AFG-125 / AFG-125P AFG-225 / AFG-225P
WAVEFORMS   Sine, Square, Ramp, Pulse, Noise, ARB


Sample Rate 120 MSa/s
Repetition Rate 60MHz
Waveform Length 4k points
Amplitude Resolution 10 bits
Non-Volatile Memory 4k points


Range Sine/Square 1uHz~25MHz
  Ramp 1uHz~1MHz
Resolution 1uHz
Accuracy Stability ±20 ppm
Aging ±1 ppm, per 1 year
Tolerance ≤1 mHz


Amplitude Range

GPA-501 power supply: 1mVpp to 2.5Vpp (into 50Ω), 2mVpp to 5Vpp (open-circuit)

USB power supply : 1mVpp to 2Vpp (into 50Ω), 2mVpp to 4Vpp (open-circuit)

Accuracy ±2% of setting ±1 mVpp (at 1 kHz)
Resolution 1mV or 3 digits
Flatness ±1% (0.1dB) ≤100kHz, ±3% (0.3 dB) ≤5MHz,±5% (0.4 dB) ≤12MHz, ±10%(0.9dB) ≤25MHz(sine wave relative to 1kHz)
Units Vpp, Vrms, dBm
Offset Range

GPA-501 power supply: ±1.25 Vpk ac +dc (into 50Ω), ±2.5Vpk ac +dc (Open circuit)

USB power supply: ±1 Vpk ac +dc (into 50Ω),±2 Vpk ac +dc (Open circuit) 

Accuracy 2% of setting + 10mV+ 0.5% of amplitude
WAVEFORM OUTPUT Impedance 50Ω typical (fixed), > 10MΩ (output disabled)
Protection Short-circuit protected. Overload relay automatically disables main output.


Harmonic Distortion

≤-50 dBc   DC ~ 1MHz, Ampl > 1Vpp 
≤-35 dBc   1MHz ~ 5MHz, Ampl > 1Vpp 
≤-30 dBc   5MHz ~ 25MHz, Ampl > 1Vpp


Rise/Fall Time ≤10ns at maximum output. (into 50 Ω load)
Overshoot <2%
Asymmetry 1% of period +5 ns
Variable duty Cycle

1.0% to 99.0% ≤100kHz
10% to 90% ≤ 1MHz
50% ≤ 25MHz


Linearity < 0.1% of peak output
Variable Symmetry 0% to 100% (0.1% Resolution)


Period 40ns~2000s
Pulse Width 20ns~1999.9s
Overshoot <2%
Accuracy 0.1%+20ns
Jitter 20ppm +10ns
AM MODULATION Carrier Waveforms Sine, Square, Ramp, Pulse, Arb
Modulating Waveforms Sine, Square, Triangle, Upramp, Dnramp
Modulating Frequency 2mHz to 20kHz
Depth 0% to 120.0%
Source Internal
FM MODULATION Carrier Waveforms Sine, Square, Ramp,
Modulating Waveforms Sine, Square, Triangle, Upramp, Dnramp
Modulating Frequency 2mHz to 20kHz
Peak Deviation DC to Max Frequency
Source Internal
SWEEP Waveforms Sine, Square, Ramp,
Type Linear or Logarithmic
Start/Stop Freq 1uHz to Max Frequency
Sweep Time 1ms to 500s
Source Internal / Manual
FSK Carrier Waveforms Sine, Square, Ramp, Pulse
Modulating Waveforms 50% duty cycle square
Modulation Rate 2mHz to 100 kHz
Frequency Range 1uHz to Max Frequency
Source Internal
PM Carrier Waveforms Sine, Square, Ramp
Modulating Waveforms Sine, Square, Triangle, Upramp, Dnramp
Modulation Rate 2mHz to 20kHz
Phase deviation 0˚ to 360˚
Source Internal
SUM Carrier Waveforms Sine, Square, Ramp, Pulse, Noise
Modulating Waveforms Sine, Square, Triangle, Upramp, Dnramp
Modulation Rate 2mHz to 20kHz
SUM Depth 0% to 100.0%
Source Internal
SYNC OUTPUT Type Sync, Sweep Marker, Burst Marker or Arbitrary Waveform Marker
Level TTL Compatible into 50Ω
Assignment Channel 1 or Channel 2
Polarity Normal or Inverted
Fan-out ≥4 TTL Load
Impedance 50Ω Typical
DUAL CHANNEL FUNCTION Phase -180˚ ~180˚ (Square and Pulse can not be change, Phase is 0°)
Track Synchronize phase

Frequency(Ratio or Difference) 
Amplitude & DC Offset

BURST Waveforms Sine, Square, Ramp, Arb
Frequency 1uHz~15 MHz(sine)
1uHz~15 MHz(Square) 
1uHz~1 MHz (Ramp
Burst Count 1 to 65535 cycles or Infinite
Start/Stop Phase -360 to +360
Internal Period 1ms to 500s
Gate Source External Trigger
Trigger Source Single or Internal Rate
TRIGGER DELAY N-Cycle, Infinite 0s to 655350ns
SAVE/RECALL   10 Groups of Setting Memories

Output Voltage : (2.5V/3.3V/5V)±5%, 
Output Current : 0.6A

  Power Consumption 10 W (Max)
  Operating Environment Temperature to satisfy the specification : 18 ~ 28˚C , Operating temperature : 0 ~ 40˚C ,Relative Humidity: < 80%, 0 ~ 40˚C,Installation category: CAT II
  Operating Altitude 2000 Meters
  Storage Temperature -10~70˚C, Humidity: ≤70%
  Dimensions (WxHxD) 215(W) x 35 (H) x 107(D) mm
  Weight Approx. 1kg

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