Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X

[tautech]

I think I did already? 😉

We need an SCPI command to return control to the local device (in this case Siglent DMMs) after the device has been controlled remotely.

Can you check EasyDMM behavior ?

I believe this might hold clues are to whether there is a bug or if additional SCPI commands are required to preserve user settings.

[KungFuJosh]

I think I did already? 😉

We need an SCPI command to return control to the local device (in this case Siglent DMMs) after the device has been controlled remotely.

Can you check EasyDMM behavior ?

I believe this might hold clues are to whether there is a bug or if additional SCPI commands are required to preserve user settings.

That was my first thought, but I didn't find any kind of useful logs with it, and I don't have anything setup to monitor what commands it's sending. Do you have a suggestion for that?

EasyDMM doesn't have the reset issue at all. Connect/disconnect states are set without messing anything up. Though it mostly sucks by comparison beyond that. 😉

[tautech]

I think I did already? 😉

We need an SCPI command to return control to the local device (in this case Siglent DMMs) after the device has been controlled remotely.

Can you check EasyDMM behavior ?

I believe this might hold clues are to whether there is a bug or if additional SCPI commands are required to preserve user settings.

That was my first thought, but I didn't find any kind of useful logs with it, and I don't have anything setup to monitor what commands it's sending. Do you have a suggestion for that?

EasyDMM doesn't have the reset issue at all. Connect/disconnect states are set without messing anything up. Though it mostly sucks by comparison beyond that. 😉

Nothing at all apart from some advanced sniffing.
Anyways, member Mortymore might have offered a solution. 

[KungFuJosh]

"To exit remote mode on the SDM3055/SDM3055A Digital Multimeter without using the *RST command, you can use the following alternative method:

Send the command "*CLS" to clear the status registers and error queue.
Send the command "SYSTem:LOCal" to switch the instrument from remote mode to local mode.
By sending these two commands sequentially, you can effectively exit remote mode on the DMM without performing a full reset using *RST. This method allows you to maintain the current configuration and settings of the instrument while switching back to local mode."

If it works or not... 

It didn't work for me, but that could be a PEBKAC error. I tried SYSTem:LOCal, SYST:LOC, syst:loc and none of that did anything to exit the remote state.

Currently, this is what the exit command is:
; Final command to meter before breaking connection
#finalCmd abort;*cls;*rst

Thanks,
Josh

[KungFuJosh]

Nothing at all apart from some advanced sniffing.
Anyways, member Mortymore might have offered a solution. 

VXI-11 bus, not SCPI for EasyDMM. It uses a "destroy_link" command.

[TheDefpom]

To return to local control, just press the shift key :-) this only works if you do not have any data being actively received by TC, so don't have a grid panel open or the "current values" tab open, if you are actively communicating with the meter you will see the display flick briefly to local and then revert back to remote.

[KungFuJosh]

To return to local control, just press the shift key :-) this only works if you do not have any data being actively received by TC, so don't have a grid panel open or the "current values" tab open, if you are actively communicating with the meter you will see the display flick briefly to local and then revert back to remote.

Thank you! That's a great workaround until Rob gets them to add the SCPI command. My only concern is for after shutting down TC, so that works great.

[Tjuurko]

New SDM3055 firmware:

2024/4/7  1.02.01.28
1. Added software options for accessory SCD30A.
2. Only upgrading to 1.02.01.27R2 can upgrade to this version
 
2023/4/4  1.02.01.27R2
1. Supports EMMC flash.
2. Add user-defined cold end compensation for temperature measurement.
3. After upgrading to version 1.02, you cannot return to version 1.01

https://www.siglenteu.com/service-and-support/firmware-software/digital-multimeters/#sdm3055-series

[tautech]

WOW, SDM3055 now ~35MB firmware files compared with ~9MB previously. 

[tautech]

WOW, SDM3055 now ~35MB firmware files compared with ~9MB previously. 

And it takes a while to install both updates, ~5min.
New messages appear on screen and when the upgrade is successful.

1. Added software options for accessory SCD30A.

Yes, this:
https://int.siglent.com/u_file/download/23_05_17/SCD30A_DataSheet_EN01A.pdf

Will test SCD30A for extended periods during our 3 day EMEX show next week.

[TheDefpom]

Rob, maybe give Siglent a poke to get it working on the 3065X…

[KungFuJosh]

Rob, maybe give Siglent a poke to get it working on the 3065X…

It should work on all their DMMs including the SDM3055X-E. 😉

[james38]

It seems that the changelog is a little messed up. I see different information and the date doesn't match either.

By the way, what is meant by EMMC Flash that is now supported?

[klausES]

Very interesting, but this point...

...
3. After upgrading to version 1.02, you cannot return to version 1.01
...

...let me, if there are still bugs, be very careful and reserved.
Anyone who has not only had to wait for months but years and in the meantime only survived through the return to an older version, hopefully understand this.

I was no longer informed for a long time. Maybe Siglent is now interested in doing everything better for his buyers ?

[Cyclotron]

Just got a new SDM3065X in, and the firmware shows 3.02.01.13

I checked to see if I needed to flash this before putting it in service, but this code version doesn't appear available to download and is N+1 rev higher than the version on the site.
3.01.01.12R1

It's been a long week; maybe I've got something wrong.

[KungFuJosh]

Just got a new SDM3065X in, and the firmware shows 3.02.01.13

I checked to see if I needed to flash this before putting it in service, but this code version doesn't appear available to download and is N+1 rev higher than the version on the site.
3.01.01.12R1

It's been a long week; maybe I've got something wrong.

You're fine. Your DMM came with newer firmware than what's available to download. That happens, especially on newer devices before a fw revision is released for download.

You likely won't be able to flash any firmware until a new branch is posted that starts with 3.02.xx.xx.

My DMM arrived with 3.02.01.12R1.

[tautech]

SCD30A 30A shunt for SDM3055/65X

In the recent EMEX 3 day exhibition we did a prolonged run with the new 30A shunt and compared accuracy reported on SDM3055 vs the SDL1030X Eload.
Eload was set in CC mode @5A with SPD3303X-E in Parallel mode supplying the current.

3-4mA variance was most seen which IMO is pretty decent calibration of a 30A capable shunt extending SDM 10A range to 30A capability.

[Martin72]

SCD30A 30A shunt for SDM3055/65X

Nice little gem, like the form factor.
Other ranges (upper) avaible ?

[tautech]

SCD30A 30A shunt for SDM3055/65X

Nice little gem, like the form factor.
Other ranges (upper) available ?

Seeing nothing on the Chinese website Martin.
Was pretty pleased with its performance although I haven't pushed it past 5A......yet !

Might get to do that this weekend, stay tuned as I have 60A from SPS5042X available.