Siglent SDL1000X/SDL1000X-E Electronic Load

[Johnny B Good]

 I've had mine since 12th January last year and so far I've not seen any sign of trouble. However, I doubt I've clocked up more than 30 hours of run time since then so it's a bit of a worry that mine might start exhibiting the same symptom given a few tens of hours more run time.

 I've got a set of four 100AH 12.8v LiFePo4 batteries that I'm planning on running capacity tests on a pair at a time at 12A which will add another 17 hours or so run time and probably 34 hours if I decide to do a second run. I could land up seeing the same issue by the end of those tests.

 System Info doesn't show total run time, just the number of startup times (51 when I last checked just now).

@Mortymore, Any idea how many hours of run time you'd clocked up before the display went "funny"?

[Mortymore]

Hi

I have no idea about the amount of runtime hours. I can only say that in a span of a month or so, it had some regular use testing 7Ah lead acid batteries, with tests set to run for approximately 5h if the battery was in good condition, and most of them were not. I'd say 30h per week. This is a rough estimate of 120h powered on in that month. And lately I've been using it more regularly again because I started to learning Python and I'm trying to develop a program that involves communication with a PSU, 2 DMMs and the Load, so it can be powered on for a few hours a day. That can be just 1 hour, but can be also 5h or 6h straight during the weekend.
Thing is, the SDM3000X DMMs have screensaver option, but the SPD3000 PSU and SDL1000 Load doesn't (understandably), so as long the Load as to stay powered on, the display is on.

Regards
Cesar

[Joe1vm]

Hi.
finaly SDL1020X-E has been received today. Interestingly with 1.1.1.23R1, which is not available for download yet....

[did]

Hi,
I bought one SDL1020X-E few week ago and I'm facing one very strange issue.
Time to time, when I power up the DC Power load, I have one HW tests check NOK (LOAD FAILED, EEPROM PASSED, ADC FAILED) and the unit is not operational (not possible to read input voltage and set one DC current). In some cases, on top of this HW test check NOK, I have the fan running at maximum speed.
I tried to make the FW Upgrade to latest available version (1.1.1.22R1) and to reset to factory setting but problem remains.
This issue is not systematic and I didn't find so far the trigger to reproduce this misbehavior on purpose. This is a seldom issue, very likely linked to temperature but I didn't find the root cause yet. It seems the occurence is higher when I restart the unit after 1 or 2 days of iniactivity (very cold restart  ). When the unit is booting without error then the equipment is fully operational.
 Did you see similar issue in the past with this SDL1000 equipment familly ?
I put in attachment pictures corresponding to this problem :  HW tests failures snapshot and the corresponding System Info screen (where you can see the HW ID = 00-00-000).

[GnomeZA]

Hi,
I bought one SDL1020X-E few week ago and I'm facing one very strange issue.
Time to time, when I power up the DC Power load, I have one HW tests check NOK (LOAD FAILED, EEPROM PASSED, ADC FAILED) and the unit is not operational (not possible to read input voltage and set one DC current). In some cases, on top of this HW test check NOK, I have the fan running at maximum speed.
I tried to make the FW Upgrade to latest available version (1.1.1.22R1) and to reset to factory setting but problem remains.
This issue is not systematic and I didn't find so far the trigger to reproduce this misbehavior on purpose. This is a seldom issue, very likely linked to temperature but I didn't find the root cause yet. It seems the occurence is higher when I restart the unit after 1 or 2 days of iniactivity (very cold restart  ). When the unit is booting without error then the equipment is fully operational.
 Did you see similar issue in the past with this SDL1000 equipment familly ?
I put in attachment pictures corresponding to this problem :  HW tests failures snapshot and the corresponding System Info screen (where you can see the HW ID = 00-00-000).

If it is new, isn't it just safer to return it for replacement/repair under warranty.  I mean I know we all like taking things apart and so on, but like if you buy new one of the few rare benefits is you can get it fixed for free.

[did]

Hi,
RMA number already received yesterday from the seller 
I will send back the unit after Christmas holiday period. During the while I will try to find out the trigger of this misbehavior. Will start the SDL1020X-E in different temperature conditions in the coming days. May be I will find the suitable way to reproduce this issue and then ease the diagnosis.

[Bad_Driver]

My load suffers from the same issue.

First boot: the same failure and the fan is running at full speed.
Second boot: everything is ok.

Unfortunately my device is now 26 month old, 2 month older than the European warranty period, so I have to apply for the 3 year-warranty from Siglent.

Has anyone the commands by the hand to reconvert my SDL1020x-E backward to the original state?
Thanks in advance!

[Mortymore]

For an SDL1020X-E hacked to an SDL1030X, the process can be reverted using Ni-Max (with LAN connection, or USB)

SDL1030X -> SDL1020X-E
SYSTem:DEVICE:PRODUCTUG:ID 2

300W -> 200W
SYSTem:DEVICE:POWERUG 200

Rename LOAD (if it was changed)
SYSTem:DEVICE:PRODUCTUG SDL1020X-E

 
Model IDs:
1 - SDL1020X (4 digits)
2 - SDL1020X-E  (3 digits)
4 - SDL1030X (4 digits)
5 - SDL1030X-E  (3 digits)

[Veteran68]

If you use a LAN connection you don't need NI software, all you need is a telnet client and connect to port 5025

Code: [Select]

┌──(david@tux1)-[~]
└─$ telnet sdl1020x-e 5025
Trying 192.168.0.232...
Connected to sdl1020x-e.XXXXXX.com.
Escape character is '^]'.
*IDN?
Siglent Technologies,SDL1030X,SDL13GXXXXXXXX,1.1.1.22R1
^]
telnet> quit
Connection closed.
┌──(david@tux1)-[~]
└─$
You can use PuTTY on Windows (or any other terminal app that supports telnet)

[pmendiuk]

I have a SDL-1020X-E that previously was very reliable, then intermittently does not apply any load.  The unit is out of warranty and I wondered if anyone have a schematic or service manual?

[Martin72]

Hi,
There are no schematics in the service manual, only some measure points.

[pmendiuk]

Sounds like I'll be making some schematics for the output circuit and the FET drivers.  Has anyone done their own calibration for the SDL1020X-E?

[Martin72]

I got the SM today, I have to read through the calibration part first.

[Martin72]

Here the service manual(will be deleted within 24hrs):
(Link removed)

[Martin72]

I couldn't hold back any longer and tried to see if I could turn the 1020X-E into a 1030X load.
It works, and it's very quick and easy...
I used LAN instead of the USB connection.

And then as follows:
-Select LAN as the connection on the load, activate DHCP
-Call up Putty (or a similar program)
-Enter the assigned IP, port 5025, Telnet
-Then enter the known commands in the Putty window(I only entered them separately because of the pictures, you can of course type them in one after the other and confirm with Return.)
-There is no feedback, disconnect afterwards and switch off the load.
-Switch the load on again and be happy. 

The calibration should therefore be invalid, I will recalibrate it soon.

Martin

[delvo]

@Martin72 if you have information about how to calibrate it I would love to know

[Martin72]

Send you a PM.

[Veteran68]

Told you it was easy

[BillyO]

I couldn't hold back any longer and tried to see if I could turn the 1020X-E into a 1030X load.
It works, and it's very quick and easy...
I used LAN instead of the USB connection.

Martin, no need to hide your 192.168.x.x address.  That private range has been duplicated just about a billion times all around the globe.  If someone can find your public facing IP address and get past your firewall, then finding your instruments in that private subnet could be passed on to a 12 year old poetry student.   

[mawyatt]

Where does one acquire the manual that has the proper calibration procedure? Looked at the Siglent NA site and the Service & User Manuals have nothing about instrument calibration?

Best,

[Martin72]

I had received the service manual with calibration instructions from siglent last week and had it here for download at short notice, I can post the link again.
The explanation from siglent as to why this document is no longer downloadable was that the script had caused "confusion for some" and they had therefore taken it off the net again.

[Martin72]

Here again the link (will be deleted soon):

Edit: Link removed after four days.

[pmendiuk]

Here again the link (will be deleted soon):

Edit: Link removed after four days.

Thanks for that link.

[Martin72]

Today I briefly tested whether the load works at all - after the purchase and "upgrade" I hadn't touched it again.
I will definitely test it in more detail and I think I will open a separate thread for this, as it would quickly get lost here.
It will be a few more weeks before I'm ready, because I have to wait for my new scope.
In the meantime I can get some other things, because when I was looking around I noticed that all my supplies can only deliver a maximum of 3A...a bit low.
Let's see.
As I said, briefly tested the SDM3065X, which was still calibrated until the summer, as a reference and recorded three values.
First of all: This connection(load connectors)....Who comes up with something like this...
Terrible, I'll have to change that before the test.
Then:
These were small currents, you shouldn't forget to switch the range at the load, otherwise the display is inaccurate.

Set Current: Measured Current: Deviation:

500mA         0.499504A               -0.10%
1A               0.999558A              -0.04%
1.25A           1.249561A              -0.04%

I think that's very neat.

Here is the deviation display load/SDM3065X:

Load:  SDM3065X:  Deviation:

0.4992A   0.499504A   -0.06%
0,9996A    0.999558A  -0.004%
1.2496A    1.249561A  -0.003%

I also think that's very good.
And as I think about it, this is something I can already test, up to 3A.
I will probably create a table with more values.

[Martin72]

I have now recorded a few more values, used a different power supply unit and set not only the current range but also the voltage range of the load (5A/30V).
Further, more detailed tests and impressions as mentioned later and in a new thread.



You should not be influenced by the first values, such small currents cannot be precisely mapped by this type of load, so this is not a shortcoming.