$183.41
$187.87 Shipping & Import Fees Deposit to Netherlands Details

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Price $183.41
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Estimated Import Fees Deposit $128.20
Total $371.28

Delivery Monday, December 16
Only 2 left in stock - order soon.
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GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency

3.8 3.8 out of 5 stars 31 ratings
$183.41
$187.87 Shipping & Import Fees Deposit to Netherlands Details

Shipping & Fee Details

Price $183.41
AmazonGlobal Shipping $59.67
Estimated Import Fees Deposit $128.20
Total $371.28

Available at a lower price from other sellers that may not offer free Prime shipping.
Without Voltage Display
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Purchase options and add-ons

  • 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
› See more product details

Frequently bought together

GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency
This item: GW Instek SFG-1003 DDS Function Generator with 6 Digit LED Display, 0.1Hz to 3MHz Frequency
$183.41
Only 2 left in stock - order soon.
Sold by Test Equipment USA and ships from Amazon Fulfillment.
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Customer reviews

3.8 out of 5 stars
31 global ratings

Customers say

Customers like the functionality, ease of use, and value of the precision measuring product. They mention it works well as an instructional tool and a repair tool. Some appreciate the high build quality.

AI-generated from the text of customer reviews

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FunctionalityEase of useValue for moneyBuild qualityFrequency drift
14 customers mention "Functionality"14 positive0 negative

Customers are satisfied with the functionality of the product. They mention it's an excellent function generator and a great device. Some say it works beautifully for the price.

"...Very fun and useful." Read more

"Functional, and easy to use (intuitive). Would be useful if it it included instructions, but they are available from Manufacturer...." Read more

"The unit works well, as advertised and recommend it for anyone with a need. Good quality for the price too..." Read more

"Worked well as a function generator. Very stable frequency and very easy to set output frequency with buttons or with dial...." Read more

9 customers mention "Ease of use"7 positive2 negative

Customers find the precision measuring product easy to use. They mention it's intuitive and fun to use.

"...Incredible value (features & functions per $). Intuitive, easy, and fun to use; performance easily matches specs. I'd buy a second one in a flash." Read more

"Great low priced low end function generator. Easy to use. Good documentation...." Read more

"Functional, and easy to use (intuitive). Would be useful if it it included instructions, but they are available from Manufacturer...." Read more

"Product is non-intuitive. Only way to get a square wave is to use the TTL output. (Who uses TTL any more?)...." Read more

8 customers mention "Value for money"8 positive0 negative

Customers appreciate the value for money of the product. They mention it's the best value for a bench function generator and has good quality for the price.

"This is one of the best investments in electronics I have made. Incredible value (features & functions per $)...." Read more

"Great low priced low end function generator. Easy to use. Good documentation...." Read more

"This unit was for me the right balance between price and capability - mileage may vary for others...." Read more

"...The price is certainly right for the functionality, but be aware that there is no warranty of any kind...." Read more

4 customers mention "Build quality"4 positive0 negative

Customers are satisfied with the build quality of the product. They mention it works as advertised, is solid, and has high build quality.

"Solid generator, no issues so far" Read more

"I really like this. Simple, solid, inexpensive. I use it for a variety of testing and design work in analog and mixed analog/digital." Read more

"Good functionality for the money. Works as advertised. Build quality is high and documentation is adequate. I would definitely recommend." Read more

"Good quality unit and good cost..." Read more

3 customers mention "Frequency drift"0 positive3 negative

Customers are dissatisfied with the frequency drift of the product. They mention the amplitude knob causes a small bit of frequency drift and doesn't have a constant phase at high frequencies.

"...I found a slight drift in the frequency, which I am not sure whether to attribute to the scope I was measuring with or this instrument..." Read more

"...Amplitude knob causes a small bit of frequency drift. Works as advertised." Read more

"Seems to not have constant phase at high frequencies. Although I am not a professional, need expertise from someone else." Read more

Four Stars
4 out of 5 stars
Four Stars
Great low priced low end function generator. Easy to use. Good documentation. Added photo of my measurement of full scale output of GW Instek measured on Tek 2215 set for 5 V/Div. Shows 20V peak-to-peak, no load directly connected to scope probe. Scope seemed to be calibrated ok at .2V, although some difference at 5V is probable. Hope this is helpful.
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Top reviews from the United States

wannabegeek
3.0 out of 5 stars For price, very usable
Reviewed in the United States on January 24, 2013
Size: Without Voltage DisplayVerified Purchase
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....
11 people found this helpful
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Rob
5.0 out of 5 stars Superb product
Reviewed in the United States on July 28, 2013
Size: With Voltage DisplayVerified Purchase
This is one of the best investments in electronics I have made. Incredible value (features & functions per $). Intuitive, easy, and fun to use; performance easily matches specs. I'd buy a second one in a flash.
One person found this helpful
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Stephen Lossner
4.0 out of 5 stars Four Stars
Reviewed in the United States on July 20, 2014
Size: Without Voltage DisplayVerified Purchase
Great low priced low end function generator. Easy to use. Good documentation. Added photo of my measurement of full scale output of GW Instek measured on Tek 2215 set for 5 V/Div. Shows 20V peak-to-peak, no load directly connected to scope probe. Scope seemed to be calibrated ok at .2V, although some difference at 5V is probable. Hope this is helpful.
Customer image
Stephen Lossner
4.0 out of 5 stars Four Stars
Reviewed in the United States on July 20, 2014
Great low priced low end function generator. Easy to use. Good documentation. Added photo of my measurement of full scale output of GW Instek measured on Tek 2215 set for 5 V/Div. Shows 20V peak-to-peak, no load directly connected to scope probe. Scope seemed to be calibrated ok at .2V, although some difference at 5V is probable. Hope this is helpful.
Images in this review
Customer image
Customer image
12 people found this helpful
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xyz
1.0 out of 5 stars Discovered to be broken.
Reviewed in the United States on July 29, 2016
Size: With Voltage DisplayVerified Purchase
Right now, I'm giving this a 1 star - I recently (outside of the 30 day return window) discovered that one of the LED crystals does not work - this means an '8' looks like a '0' for that digit, so "x.xx8x" looks just like "x.xx0x", entering "88888" shows "88808". This makes the unit useless to me. If you buy one of these, that should be the first you check, not that I would have thought to do so.

I'd like to hear back from the manufacturer, we'll see.
One person found this helpful
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Scott Sherwood
3.0 out of 5 stars Almost Worth It
Reviewed in the United States on January 5, 2023
Size: With Voltage DisplayVerified Purchase
Product is non-intuitive. Only way to get a square wave is to use the TTL output. (Who uses TTL any more?).

Analog out amplitude is via variable control. No way to set output via keypad
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Peter Fischel
5.0 out of 5 stars Very nice little machine!
Reviewed in the United States on July 9, 2018
Size: With Voltage DisplayVerified Purchase
I really like this unit a lot and found it a pleasure to use. I didn't realize you adjust the Duty cycle by pulling the knob out. Guess that's what we get for tossing the manual aside. Adjusting the digit position is great. I was able to precisely get the right frequency of a running motor after putting a led on it to flash at a particular frequency. Very fun and useful.
One person found this helpful
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Michael G. Sklar
5.0 out of 5 stars Excellent function generator for my needs
Reviewed in the United States on April 18, 2012
Size: Without Voltage DisplayVerified Purchase
This unit was for me the right balance between price and capability - mileage may vary for others. Most of the use I've made of it (using the book Electronic Circuits for Evil Genius, 2nd) has been at much lower frequencies than its maximum of 3 MHz. I was concerned that my oscilloscope can process 100 MHz signals but this unit can only send 3 MHz, but I haven't needed anything higher. This unit arrived very quickly and is as advertised.
4 people found this helpful
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Daniel Howe
4.0 out of 5 stars and easy to use (intuitive)
Reviewed in the United States on August 9, 2014
Size: Without Voltage DisplayVerified Purchase
Functional, and easy to use (intuitive). Would be useful if it it included instructions, but they are available from Manufacturer.

I found a slight drift in the frequency, which I am not sure whether to attribute to the scope I was measuring with or this instrument (+/- .09 hz in the 10 hz setting). That aside the investment paid for itself in 5 minutes, and will continue to do so every time it is turned on.
One person found this helpful
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Top reviews from other countries

Martin E
5.0 out of 5 stars Good value
Reviewed in the United Kingdom on November 23, 2016
Size: Without Voltage DisplayVerified Purchase
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.
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