3 channel DDS generator purchase - Page 1
Forum section: electronics / testgear

author: KlausKragelund
author_rank: Regular Contributor
timestamp: April 10, 2022, 09:15:11 am
content: HiI have a Siglent 2 channel DDS generator, but sometimes I need 3 channelsI have been searching and sofar no hitsAnyone recommend one? (I would like better quality than Aliexpress :-))ThanksKlaus

author: DC1MC
author_rank: Super Contributor
timestamp: April 10, 2022, 09:31:26 am
content: Yup, almost impossible to find:https://www.amazon.de/-/en/Signal-Generator-Channel-Frequency-Waveform/dp/B089R4NGL9

author: pope
author_rank: Frequent Contributor
timestamp: April 10, 2022, 09:41:18 am
content: Quote from: KlausKragelund on April 10, 2022, 09:15:11 amWhy not getting another one? Do you need 3 channels on the same device?

author: KlausKragelund
author_rank: Regular Contributor
timestamp: April 10, 2022, 09:45:50 am
content: Quote from: DC1MC on April 10, 2022, 09:31:26 amThanksActually in Aliexpress using the search term "3 channel signal generator" came up empty. Adding a dash now suddenly showed the product you linked to ("3-channel signal generator"Thanks for the help

author: KlausKragelund
author_rank: Regular Contributor
timestamp: April 10, 2022, 09:47:26 am
content: Quote from: pope on April 10, 2022, 09:41:18 amI need to be able to apply 3 phase with 120 degrees between them. Does the Siglent SW support linking them together like that?

author: KlausKragelund
author_rank: Regular Contributor
timestamp: April 10, 2022, 10:50:19 am
content: Quote from: KlausKragelund on April 10, 2022, 09:47:26 amActually it does:https://siglentna.com/application-note/multi-generator-synchronization/?pdf=14786

author: Ground_Loop
author_rank: Frequent Contributor
timestamp: April 10, 2022, 12:30:26 pm
content: Quote from: KlausKragelund on April 10, 2022, 09:47:26 amI have done exactly this with a Tektronix AWG430.

author: maxwell3e10
author_rank: Frequent Contributor
timestamp: April 11, 2022, 02:29:34 am
content: There is also Wavetek 195, which is 4 channel. It's a little older and has 12 bit resolution, but with a lot of features. It's the same model as Aim/TTi TGA1244 for which one can find documentation.

author: ledtester
author_rank: Super Contributor
timestamp: April 11, 2022, 08:26:19 am
content: Quote from: KlausKragelund on April 10, 2022, 09:47:26 amThe Siglent DDS units have an external trigger input which can be used to start the output.For instance, see page 56 (physical page 67) of:https://siglentna.com/wp-content/uploads/dlm_uploads/2017/10/SDG1000_UserManual_UM02010-E08B.pdf

author: tautech
author_rank: Super Contributor
timestamp: April 11, 2022, 10:29:04 am
content: Quote from: ledtester on April 11, 2022, 08:26:19 amSDG1000 models have been replaced with SDG1000X, a far better instrument.These have a Sync output especially for ganging together multiple units.https://siglentna.com/wp-content/uploads/dlm_uploads/2022/03/SDG1000X_DataSheet_DS0201X_E01H.pdf

author: langwadt
author_rank: Super Contributor
timestamp: April 11, 2022, 04:00:54 pm
content: Quote from: KlausKragelund on April 10, 2022, 09:47:26 amonce you have the two phases with 120 degrees between them the last one is just an add and invert

author: KlausKragelund
author_rank: Regular Contributor
timestamp: April 11, 2022, 06:35:06 pm
content: Quote from: langwadt on April 11, 2022, 04:00:54 pmYes, but do you have a box like that just handy?Come to think of it, why doesn't anyone sell a box that has amplifiers etc, seems like there could be a marked for it, except for the cheap not sure it works Aliexpress stuff

author: langwadt
author_rank: Super Contributor
timestamp: April 11, 2022, 06:45:45 pm
content: Quote from: KlausKragelund on April 11, 2022, 06:35:06 pmobviously depends on frequency and load, but in the simplest case an opamp and three resistor would do

author: nctnico
author_rank: Super Contributor
timestamp: April 11, 2022, 08:19:00 pm
content: Quote from: KlausKragelund on April 11, 2022, 06:35:06 pmThis is an idea for a new product (power amplifier) I have for a while but so far no time to actually build it.