RS PRO AFG21105 Function Generator & Counter 5MHz USB

  • RS Stock No. 123-3531
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CN
Product Details

RS Pro AFG-21000 and AFG-21100 Series Arbitrary Function Generators

RS Pro AFG-21000/AFG-21100 AFGs use direct digital synthesis (DDS) to generate signals at precise frequencies through a unique memory access and clocking mechanism. They offer an accurate and affordable signal source covering the output of Sine, Square (Pulse), Ramp (Triangle), Noise and Arbitrary waveforms. The 20 MSa/s sampling rate, 10 bit vertical resolution and 4 Kpts memory of the AFG-21000/AFG-21100 Series provide users with a flexible environment in which specific waveform output can be created as required. The application range of these user-friendly instruments is greatly extended by their 0.1 Hz resolution of Sine, Square and Triangle waveforms and the 1% ∼ 99% adjustable duty cycle of the Square (Pulse) waveform. The individual AFG-2000/AFG-2100 models are differentiated by frequency band and the AFG-2100 models have the additional features of AM/FM/FSK Modulation, Sweep and Frequency Counter.

Features and Benefits

Sine, Square, Triangular, Noise and Arbitrary waveforms
0.1 Hz resolution of Sine, Square and Triangular waveforms
20 MSa/s sampling rate, 10 bit vertical resolution and 4 Kpts memory
1% ∼ 99% adjustable duty cycle for Square waveform
Waveform parameter setting through numeric keypad entry and knob selection
Amplitude, DC offset and other key setting information displayed simultaneously on the 3.5 in LCD screen
USB device interface for remote control and waveform editing
PC arbitrary waveform editing software
AM/FM/FSK Modulation, Sweep and Frequency Counter (AFG-21100 models only)

Areas of Application

Education sector
Basic industrial

Supplied with

Power cord, test lead, quick start guide, user manual CD

RS PRO AFG-21105 5 MHz Arbitrary Function Generator

Introducing the range of high-quality arbitrary function generators from RS PRO. The professional AFG-21000 and 21100 range are DDS (direct digital synthesis) signal generators that cover a wide range of outputs like sine, ramp, square, noise and 20MSa/s arbitrary waveform. This RS PRO function generator has a 3.5-inch LCD screen that is clear and easy to read and offers reliable and precise results when it matters. This user-friendly instrument has a high resolution and adjustable duty cycle, making it ultra-versatile and suitable for a wide range of applications by offering an accurate and affordable signal source.

Features and Benefits:

• This high-quality RS PRO arbitrary function generator is a user-friendly and versatile instrument that can be used across a wide variety of applications
• The range offers 3 frequency bands of 0.1Hz - 5/12/25 MHz with a 0.11Hz resolution offering Sine, Square, Ramp, Noise and Arbitrary Waveform outputs
• Large 3.5-inch LCD screen for easy results viewing and clear display of digital waveform parameters
• Amplitude, DC offset other key setting information can be shown simultaneously on the LCD display
• The device range offers a 20MSa/s sampling rate, 10-bit vertical resolution and 4k point memory for Arbitrary Waveform
• 1% - 99% adjustable duty cycle for square waveform
• Waveform parameter settings can be entered through a numeric keypad and built-in trigger selection
• AM/FM/FSK Modulation, Sweep, and Frequency Counter Functions (AFG-21105/21112/21125 only)
• The generator has a USB device interface for remote control and waveform editing for additional functionality
• Free arbitrary waveform editing software available for download (see Technical Reference section for .zip file download)


Function generators and counters are a type of test and measurement device used to generate various types of electrical waveforms over a range of frequencies. They are available with single or dual-channel and can feature a wide range of interface types including LAN, Bluetooth, USB and more. Function generators and counters are commonly used as signal generators in areas such as:

• Audio products frequency characteristics measurement
• Pulse signal as a trigger or synchronization signal for electronic product testing
• Pulse noise simulation
• Reference clock signal of an electronic device
• Vibration signal simulation
• Noise simulation for communication system educational lab

They are often used in areas like:

• Integrated electronic testing
• Educational institutes
• Embedded systems
• Digital circuits
• Analogue signal processing
• Laboratories

What waveforms can be generated?

Sine, square, ramp, noise and arbitrary waveforms are the types of frequencies that can be generated from this range of RS PRO function generators.

What is the function generator supplied with?

• AFG-21000 range is supplied with: Power cord, test lead, instruction manual
• AFG-21100 range is supplied with: Power cord, test lead x2, instruction manual

Can this generator unit be calibrated?

Yes, the unit can be calibrated to RSCAL standards and can be found here:

123-3609 RSCAL


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Attribute Value
Maximum Frequency Range Sinewave 5MHz
Minimum Frequency Range Sinewave 0.1Hz
Maximum Frequency Range Square Pulse and Arbitrary Waveform 5MHz
Minimum Frequency Range Square Pulse and Arbitrary Waveform 0.1 Hz
Maximum Frequency Range Triangle/Saw 1MHz
Minimum Frequency Range Triangle/Saw 0.1Hz
Digital Frequency Yes
Digital Amplitude and Offset Yes
Internal Linear and Log Sweep Yes
Variable Sweep Yes
Internal and External Amplitude Modulation Yes
FM Modulation Yes
Time Base Accuracy ±20ppm
Dimensions 266 x 293 x 107mm
Output Impedance >300 (Output Disabled) kΩ, 50 (Fixed) Ω
Length 266mm
Width 293mm
Model Number p AFG21105
Input Impedance 1 kΩ
Frequency Range Square Pulse and Arbitrary Waveform 0.1 Hz → 5 MHz
Height 107mm
Minimum Operating Temperature 0°C
Interface Type USB
Maximum Operating Temperature +40°C
Weight 2.5kg
Plug Type UK
Output Amplitude 1 mV Pk-Pk → 10 V Pk-Pk, 2 mV Pk-Pk → 20 V Pk-Pk (Open Circuit)
33 In Global stock for delivery within 4 - 6 working days
Price Each
Was MYR2,167.16
MYR 1,210.60
Per unit
1 +