---
product_id: 51059067
title: "GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency"
brand: "best price square"
price: "$977"
currency: NZD
in_stock: true
reviews_count: 7
category: "Best Price Square"
url: https://www.desertcart.nz/products/51059067-gw-instek-sfg-1003-dds-function-generator-with-6-digit
store_origin: NZ
region: New Zealand
---

# 0.1Hz to 3MHz frequency range ±20ppm frequency accuracy & stability 6-digit high-res LED display GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency

**Brand:** best price square
**Price:** $977
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your signal game with precision that professionals trust!

## Quick Answers

- **What is this?** GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency by best price square
- **How much does it cost?** $977 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/51059067-gw-instek-sfg-1003-dds-function-generator-with-6-digit)

## Best For

- best price square enthusiasts

## Why This Product

- Trusted best price square brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Robust:** Lightweight 2.1kg design fits perfectly on any professional bench
- • **Precision Meets Power:** DDS & FPGA tech deliver ultra-stable, pinpoint frequency control
- • **Plug & Play Global Ready:** Includes UK & EU plugs—engineered for worldwide labs and workshops
- • **Versatile Waveform Arsenal:** Sine, square, triangle, and TTL outputs for every testing scenario
- • **Effortless Frequency Sweeps:** Push-button and dial sweep combo for seamless frequency response mapping

## Overview

The GW Instek SFG-1003 is a high-accuracy DDS function generator featuring a 0.1Hz to 3MHz frequency range, ±20ppm stability, and a crisp 6-digit LED display. Designed with FPGA technology, it offers sine, square, triangle, and TTL waveforms, making it an essential, compact tool for precise signal generation in professional and educational settings.

## Description

The SFG-1000 Series, an economic function generator with high accuracy and high stability output, are designed based on the DDS (Direct Digital Synthesized) technology embedded in a large scale FPGA. The 3MHz frequency range and the output waveform selection of Sine, Square, Triangle and TTL available in the SFG-1000 Series adequately provide the fundamental functions to ensure high confidence in test results. The DDS technology at an affordable price gives a high value solution to the users who need a signal source for accurate but simple measurement applications.

Review: Good value - This is excellent value and works really well. It has both push button frequency selection and a dial sweep so you can sweep a range of frequencies to get a plot on the scope of frequency response (which normally requires a ramp function). The best I could find with a fair bit of research.
Review: Good for accuracy on frequency - Setting up each time takes getting used to

## Features

- DDS Technique and FPGA Chip Design
- Frequency Range:0.1Hz~3MHz
- High Frequency Accuracy : ± 20ppm
- High Frequency Stability : ± 20ppm
- Max. Frequency Resolution : 100mHz
- item package contains both UK and EU plugs
- An economic function generator with high accuracy and high stability output
- DDS technique and FPGA chip design
- 3 MHz frequency range
- Output waveform selection of sine, square, triangle and TTL available
- Measures 251mm width by 91mm height by 291mm depth

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0051W6LDW |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 4.4 4.4 out of 5 stars (15) |
| Date First Available | 2 July 2015 |
| Display style | LED |
| Included components | User Manual^Power Cord^Test Lead GTL-101 |
| Item Package Quantity | 1 |
| Item Weight | 2.1 kg |
| Item model number | SFG-1003 |
| Manufacturer | GW Instek |
| Measurement System | Metric |
| Part number | SFG-1003 |
| Power source type | Corded-electric |
| Product Dimensions | 25.1 x 29.1 x 9.1 cm; 2.1 kg |
| Size | Without Voltage Display |
| Special Features | Test Lead set |

## Images

![GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency - Image 1](https://m.media-amazon.com/images/I/51lfz4NSAVL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What's the max peak-to-peak voltage?**
A: Hi Jerry, it's 10Vp-p (into 50 Ohm load).  plus/minus 20% at max. position.  Below is the datasheet for your review.http://www.jameco.com/Jameco/Products/ProdDS/2160411.pdf

**Q: Can this work on 240V? as on the back it say 120V, but in the description and in the manual it say 120/110/220/240V?**
A: Back of my unit is labeled "120V". Its possible you can open it up and switch ranges, but its not a full range power supply.

**Q: is the square wave duty cycle adjustable?  if so what is the range?**
A: Yes, the duty cycle of the square wave (default is 50%) can be adjusted from 25% to 75% (See page 23 of the included user guide).

**Q: Does this include hand-electrodes (stainless steel)?**
A: This function generator comes standard with Probe-GTL-101 x 1, and yes, stainless steel.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value
*by M***E on 23 November 2016*

This is excellent value and works really well. It has both push button frequency selection and a dial sweep so you can sweep a range of frequencies to get a plot on the scope of frequency response (which normally requires a ramp function). The best I could find with a fair bit of research.

### ⭐⭐⭐⭐⭐ Good for accuracy on frequency
*by F***. on 17 April 2023*

Setting up each time takes getting used to

### ⭐⭐⭐ Review
*by W***K on 24 January 2013*

The only thing I don't like about it is the user interface. To adjust fine increments of 1Hz, you must use the arrow keys to move the cursor to the place holder. It's not great for sweeping a range of values....but over all I've been happy to have a useable function generator up to 3Mhz ( i think...). Higher freq and a sweep function and/or better controls probably bump you up into the next price category....

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-11*