Author Topic: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown  (Read 76013 times)

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Offline orin

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #150 on: January 12, 2016, 09:52:17 pm »
Just a quick note to let everyone know that the Siglent engineering team does pay attention to your comments and suggestions. They have informed us that they are addressing the SPD3303X/X-E internal wiring placement & dressing issues pointed out on Dave's video.

Thanks
Steve


They really need to address the binding posts - see attached picture of a SPD3303D as it arrived from Tequipment.  Still haven't heard back from then what they intend to do about it...


After consulting with Siglent, TEquipment sent a replacement.  It replacement arrived today and appears to be in good shape.

A contributing factor towards the failure was immediately obvious.  The dense foam packing for the replacement has a cutout for the binding posts.  The original foam packing did not and obviously interfered with the binding post.  Presumably they used the packing meant for the rear of the instrument at the front of this particular instrument.

Orin.
 

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Offline hipfan75

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #152 on: April 14, 2016, 10:34:53 pm »
New FW for these PSU's:
http://www.siglentamerica.com/USA_website_2014/Firmware&Software/firmware/SPD3303X-P02.02R2.rar

The UI is much improved with the new firmware. It now simultaneously displays both the set values and actual readings. I've attached a couple of photos.

Regards,
HipFan75
 
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Online tautech

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #153 on: April 15, 2016, 12:43:10 am »
New FW for these PSU's:
http://www.siglentamerica.com/USA_website_2014/Firmware&Software/firmware/SPD3303X-P02.02R2.rar

The UI is much improved with the new firmware. It now simultaneously displays both the set values and actual readings. I've attached a couple of photos.

Regards,
HipFan75
Welcome to the forum.

Thanks for taking the trouble to register here and offer feedback.  :-+



At the time of this edit, Siglent websites had not been updated to show the new UI you've provided pics of:
 
« Last Edit: February 17, 2017, 09:42:58 am by tautech »
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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #154 on: December 29, 2016, 08:12:27 pm »
New Firmware for SPD3303X and X-E models.
http://www.siglentamerica.com/gjjrj.aspx?id=15

From the changelog:

Summary of Changes:
1) Add the CH3’s SCPI control command.
2) Fixed a design bug about voltage setup.
3) Remove the screen saver.
« Last Edit: April 13, 2017, 09:11:38 pm by tautech »
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Offline JohnG

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #155 on: April 13, 2017, 08:34:50 pm »
I have found a new problem with the SPD3303X-E, I think.

I bought the SPD3303X-E in part because I needed to be able to control it remotely and because I have been very happy with my SGD2042X.

However, I cannot reliably communicate with it. I am using Python 3.6 with Pyvisa 1.8 on a 32 bit Win 7 machine, using the latest Keysight Visa libraries, over USB. I have no problems talking to the SGD2042X, or any of my other equipment. But, I cannot talk reliably to the SPD3303X-E. If the default settings are used in Pyvisa, a supply.query('*IDN?') command times out. I got as far as finding out that it does not like the default write_termination of '\r\n', and I have to force it to '\n'. Sometimes it still seems to hang, and if I want to talk to the supply, I have to power it down and restart it.

Software: 1.01.01.02.03
Hardware: V3.0

Like I said, no issues with the SGD2042X, or any other equipment. Disappointing, because I bought this specifically for remote control purposes. Anyone have any ideas?

I would really not like to install NI-Visa to see if it works better. I have an Agilent USB-GPIB that I also need to use, and I have had repeated bad experiences with NI software, including one that required restoring my machine.

Any help appreciated.

John
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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #156 on: April 13, 2017, 09:21:10 pm »
John, there are some changes coming for many instruments to allow direct control without the need for any 3rd party software. Just where the SPD3303X and X-E fit into the FW update schedule for this I yet don't know.

Could the Labview drivers be of assistance in the meanwhile or do they need VISA too ?
http://siglentamerica.com/gjjrj-xq.aspx?id=3619&tid=204

Siglent USA have a team of techs that can look into this in detail for you.
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Offline FrankBuss

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #157 on: April 13, 2017, 11:21:23 pm »
However, I cannot reliably communicate with it. I am using Python 3.6 with Pyvisa 1.8 on a 32 bit Win 7 machine, using the latest Keysight Visa libraries, over USB. I have no problems talking to the SGD2042X, or any of my other equipment. But, I cannot talk reliably to the SPD3303X-E. If the default settings are used in Pyvisa, a supply.query('*IDN?') command times out. I got as far as finding out that it does not like the default write_termination of '\r\n', and I have to force it to '\n'. Sometimes it still seems to hang, and if I want to talk to the supply, I have to power it down and restart it.

The USB code is not the best. It works if you add delays after sending the commands:

https://www.eevblog.com/forum/metrology/raspberry-pi23-logging-platform-for-voltnuts/msg1094066/#msg1094066
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Offline JohnG

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #158 on: April 14, 2017, 01:53:49 am »
John, there are some changes coming for many instruments to allow direct control without the need for any 3rd party software. Just where the SPD3303X and X-E fit into the FW update schedule for this I yet don't know.

Could the Labview drivers be of assistance in the meanwhile or do they need VISA too ?
http://siglentamerica.com/gjjrj-xq.aspx?id=3619&tid=204

Siglent USA have a team of techs that can look into this in detail for you.

Thanks, I avoid Labview. Direct control is of less interest to me personally, because pyvisa forms a consistent framework. I have other equipment that I also communicate with, so a different method means I spend more time coding, which is not really my strength nor interest. That's just me, though, I'm sure others have probably been asking for it.


The USB code is not the best. It works if you add delays after sending the commands:

https://www.eevblog.com/forum/metrology/raspberry-pi23-logging-platform-for-voltnuts/msg1094066/#msg1094066

Thanks for this. I was looking for something like this for a while, but didn't find it. While I don't like the slowness, it will work for now. Do you have any idea if it will be any better through a LAN connection? I have to learn how to do that anyway to talk to my scope.

John
 
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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #159 on: April 14, 2017, 05:30:56 pm »
PM sent
 

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #160 on: August 24, 2017, 08:17:00 pm »
We now have the correct imagery on all Siglent websites showing the GUI as it is in latest firmware versions.
For some time now the display has shown dialed in values AND actual real time load values.
http://www.siglentamerica.com/pdxx.aspx?id=1393&T=2&tid=17


« Last Edit: August 24, 2017, 09:12:34 pm by tautech »
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Offline belba

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #161 on: November 10, 2017, 10:06:24 pm »
Hello,

I own a Siglent SPD3303S but the Firmware is marked the Device as a SPD3303D. The power supply shows only 2 digits after a V/A value, for example 3.00V instead 3.000V.

I have more Mysteries about my power supply Version:

At http://www.siglent.com/ENs/prodcut-dbjg.aspx?Proid=529,1142,&tid=17&id=1132&T=2 the difference between a 3303S and a 3303X ist the output voltage/current. A X-Model should have a max voltage at 32Volt and a max current at 3.2 Ampere, a S-Modell should have only 30 Volt and 3 Ampere.

If you look at my model, I have the higher output values like the modern X-model

My questions are following:

  • I have Paid for a S-model but I have not the higher resolution at the display, how can I get the higher resolution?
  • Which kind of model I own now? A SPD3303S-, SPD3303D-, SPD3303X- or a SPD3303X-E-model
  • I would like to have also the improved firmware too and I'm very shure, that the Hardware is not really different between the models, is there a improved firmware for my, whatever model, aviable?
 

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #162 on: November 10, 2017, 10:14:18 pm »
Hello,

I own a Siglent SPD3303S but the Firmware is marked the Device as a SPD3303D. The power supply shows only 2 digits after a V/A value, for example 3.00V instead 3.000V.

I have more Mysteries about my power supply Version:

At http://www.siglent.com/ENs/prodcut-dbjg.aspx?Proid=529,1142,&tid=17&id=1132&T=2 the difference between a 3303S and a 3303X ist the output voltage/current. A X-Model should have a max voltage at 32Volt and a max current at 3.2 Ampere, a S-Modell should have only 30 Volt and 3 Ampere.

If you look at my model, I have the higher output values like the modern X-model

My questions are following:

  • I have Paid for a S-model but I have not the higher resolution at the display, how can I get the higher resolution?
  • Which kind of model I own now? A SPD3303S-, SPD3303D-, SPD3303X- or a SPD3303X-E-model
  • I would like to have also the improved firmware too and I'm very shure, that the Hardware is not really different between the models, is there a improved firmware for my, whatever model, aviable?
There's two very similar firmware versions for the S and D models, both are 6R2 versions.
Be sure to install the S version, you can find it here:
http://siglentamerica.com/gjjrj-xq.aspx?id=1223&tid=15
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Offline Smokey

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #163 on: November 10, 2017, 11:57:28 pm »
What is the highest rate that I can remotely change the output voltage on one channel and read the current on the other channel?

For background, see https://www.eevblog.com/forum/testgear/rigol-dp832-remote-command-update-rate/
 

Offline Smokey

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #164 on: November 14, 2017, 12:39:32 am »
Just one bump in case anyone knows the remote update rate of this thing...
 

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #165 on: April 27, 2018, 08:27:59 pm »
New 5 min vid on these PSU's.

https://youtu.be/H-BiphMqp5g
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Offline hkBattousai

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #166 on: December 09, 2018, 09:23:19 am »
Q1) What is the standard with for the banana plugs?

Q2) At 16:15, it is said that, for an adjustable current power supply, the output capacitors are desired to be minimum possible. What is the reason behind this?
« Last Edit: December 09, 2018, 01:01:01 pm by hkBattousai »
 

Offline alm

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #167 on: December 09, 2018, 05:06:49 pm »
Imagine you want to test a low-power LED. You set the current limit to 1 mA, and leave the voltage limit set to 30 V, since limiting the current should be sufficient. Now you connect your LED to the power supply. The output cap will be charged to 30 V, and is not subject to the current limit (it is located beyond the pass transistor). This capacitor will dump all its energy into the poor LED. The current will only be limited by the ESR of the cap, resistance in wiring etc. The bigger the cap, the more energy will be dumped in the device under test in this scenario.
« Last Edit: December 09, 2018, 08:00:06 pm by alm »
 

Offline hkBattousai

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #168 on: December 09, 2018, 07:36:03 pm »
I understood it. Thank you very much.
 

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #169 on: March 10, 2020, 05:38:55 pm »
Hello..

The Siglent SPD3303X-E laboratory power supply arrived today. What can I say ... I'm verry happy.
The Siglent power supply is super quiet. In addition to Rigol DP321 power supply, you can now work relaxed
and even listen to music  :-+

I just don't understand why the Rigol DP831 power supply is so loud after being switched on  :-//
After switching on, the fan starts up and then constantly at medium speed.
Perhaps the power transistors in the power supply are "preheated" like in the diesel before the start  :o

Conclusion: Although the Rigol DP831 power supply compared to the Siglent laboratory power supply more adjustment
and Possesses analysis functions (even a system temperature display), I will ultimately
opt for the Siglent laboratory power supply and send the other one back.

Greetings Rolf
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Offline oz2cpu

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #170 on: March 05, 2021, 06:57:06 pm »
comments to the #828 video

the 2020 version : banana connectors now with correct hole.
the wires are now secured with cable ties,
the too hot bridge rectifier is now 56C,
no more screensaver,
both setpoint and actual are displayed at same time.
idle power usage 12W all outputs off.
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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #171 on: March 05, 2021, 08:24:02 pm »
comments to the #828 video

the 2020 version : banana connectors now with correct hole.
the wires are now secured with cable ties,
the too hot bridge rectifier is now 56C,
no more screensaver,
both setpoint and actual are displayed at same time.
idle power usage 12W all outputs off.
Nice, hadn't noticed the binding posts had been shifted 1mm.  :o

Do install the latest FW for the new features added:
Add the OCP function (Long push the right arrow button (’→’) get into or exit OCP function).
Different font colors when the power is ON and OFF.
Some improvements about the USB’s stability.
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Online tautech

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #172 on: March 06, 2021, 02:07:46 am »
comments to the #828 video

the 2020 version : banana connectors now with correct hole.
the wires are now secured with cable ties,
the too hot bridge rectifier is now 56C,
no more screensaver,
both setpoint and actual are displayed at same time.
idle power usage 12W all outputs off.
Nice, hadn't noticed the binding posts had been shifted 1mm.  :o
Deeper investigation shows recent stock of SN# SPD3XIDD4R54** units still have 20mm spacings.
Do you have a later SN# unit ?
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Offline oz2cpu

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #173 on: March 06, 2021, 11:13:27 am »
i dont care much about the spacing, why would i ?
it is the HOLE that David complain about, it was too large in his very erly demo unit,
so his chepo crapy banana plugs did not mate correctly,
I tried all types of banana plugs and cables i could find here,
all go tight and firmly, and there is always a perfect good and stable connection,
I dont own any banana plugs as low quality as the types David used.
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Offline rs20

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Re: EEVblog #828 - Siglent SPD3303X precision Lab PSU Teardown
« Reply #174 on: March 08, 2021, 10:42:05 am »
i dont care much about the spacing, why would i ?




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