Siglent SDG1025 weird behaviour - Page 1
Forum section: electronics / testgear

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: May 09, 2018, 11:22:00 am
content: Hi,I have a brand new Siglent SDG1025 function generator. I put both channels on the pulse section and tried to generate pulses. Then I modified the Delay for the second channel to make some shifts in the second channel signal. I did not work at all. I changed to a different waveform such as the square and I modified the phase section. it did not shift again!Then I thought that might be because of the calibration or something because I had not performed that. Then I went to Utility menu and did the self-calibration. But now the situation got worse. Now the output voltages are not normal and all are wrong. it gives wrong outputs.

author: tautech
author_rank: Super Contributor
timestamp: May 09, 2018, 09:06:26 pm
content: Quote from: VanitarNordic on May 09, 2018, 11:22:00 amSorry I haven't got one anymore to help work through all your issues but I doubt there's anything wrong except user error.WRT the output voltages.If the output is set for fifty ohms and not loaded by that impedance the p-p will read high.Set the output for HiZ.

author: nctnico
author_rank: Super Contributor
timestamp: May 09, 2018, 09:39:38 pm
content: Phase shifting should work even without coupling the channels together but the frequencies will have to be exactly the same. Any screendump from an oscilloscope showing the signals?

author: Macbeth
author_rank: Super Contributor
timestamp: May 09, 2018, 09:44:11 pm
content: I have an SDG1025 and a scope I have just been using today, but OP's post is extremely vague and so I have no interest in helping them.

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: May 10, 2018, 03:16:23 am
content: Quote from: tautech on May 09, 2018, 09:06:26 pmIt is already on HiZ. Your doubt is wrong that just happened after calibration

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: May 10, 2018, 03:21:17 am
content: Quote from: Macbeth on May 09, 2018, 09:44:11 pmI will appreciate if you leave us alone then and dont write a post

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: May 10, 2018, 03:24:03 am
content: Please dont reply to this post. I will contact the manufacturer for help

author: tautech
author_rank: Super Contributor
timestamp: May 10, 2018, 03:43:26 am
content: Quote from: VanitarNordic on May 10, 2018, 03:16:23 amCan I ask what firmware version is installed ?The latest is 39R5 and available here:https://www.siglenteu.com/service-and-support/firmware-software/waveform-generators/#sdg1000-series

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: May 10, 2018, 03:45:50 am
content: Quote from: tautech on May 10, 2018, 03:43:26 amYes thank you, but I have done that already and calibrated with the latest firmware. I forgot to mention in the first topic

author: tautech
author_rank: Super Contributor
timestamp: May 10, 2018, 09:57:55 am
content: Have you checked out the operating tips on the Siglent websites ?https://www.siglenteu.com/operating-tip/generating-multi-phase-waveforms/

author: VanitarNordic
author_rank: Frequent Contributor
timestamp: May 10, 2018, 10:14:53 am
content: Quote from: tautech on May 10, 2018, 09:57:55 amThat's for when we want to generate 4 signals using two generator devices. I am just using two channels or even one. The device usage is quite straighforward. I contacted the manufacturer and the seller. Waiting for a response