Spectrum Analyzer - Rigol DSA815

[RikV]

So I must say too. Thanks!

[Nilton C]

Re: Spectrum Analyzer - Rigol DSA815
« Reply #1188 on: August 21, 2023, 08:36:29 pm »
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So, let's follow PeDre's discoveries to DELETE LICENSES ON A RIGOL DSA8xx/7xx:

1. Create a USB vendor disk (instructions attached) and insert the disk in the Rigol DSA (should work in any model)

2. Activate FACTORY MODE, using the keys according to the attached sequence.

3. A Del Option will appear to allow the deletion of the licenses. WARNING: Once pressed, it will delete all licenses! (You'll need to re-insert the ones you want to retain.)

This procedure was investigated by @PeDre. It seems that currently there is no SCPI command implementation to delete the licenses.
* DSA_USB_VendorDisk.txt (0.33 kB - downloaded 49 times.)

* DSA815-Production-Mode.png (13.77 kB, 800x480 - viewed 144 times.)

* DSA815-Del-Option.png (14.89 kB, 800x480 - viewed 138 times.)


Hi, I tried to do the same procedure but I couldn't do it.
make a pendriver to access factory mode
Would you help me
When trying to enter factory mode, the command is blocked
I use fw .18 or dsa and new model

[Holkly]

Can you obtain this information?

*IDN?
:PRIVate:FACTory:SKEY?

If so, pm me and I may be able to help you. 

You've got PM, Thanks !

[58kk90]

Guys, I have just picked up a used but mint looking  DSA815, in the licenses screeen, the only one I have is TG-DSA800 which I believe is the tracking generator as this has a tracjking generator installed that option is showing as forever, all the rest are showing as trial, time  left 0hr 0min 0s.

From the information screen, the unit has
Version of mainboard : 00.09
Version of radio frequency board FPGA : 00.05
Version of Digital board FPGS : 00:01.19
Version of Firmware : 00.01.19
Version of Boot : 00:01:04

From what I can see in this thread, I am stuffed to get the additional options enabled using the keygen as the trial time is zero for all the options, can anyone confirm that to be the case.
Obviously, having only just picked it up I don't want to turn it into a paperweight by doing something silly such as downgrading the firmware if that will not be of any help, but it would be really good to have the additional options enabled if possible.

Thank you.

[Holkly]

Dear TV84,

thanks a million..

Regards

[RandyS]

Can you obtain this information?

*IDN?
:PRIVate:FACTory:SKEY?

If so, pm me and I may be able to help you. 

You've got PM, Thanks !

You've got another PM too. Thanks!!!

[RandyS]

Can you obtain this information?

*IDN?
:PRIVate:FACTory:SKEY?

If so, pm me and I may be able to help you. 

MANY THANKS tv84!!!!!!!

[Zucca]

MANY THANKS tv84!!!!!!!

He's a legend.

[Spirex]

My 815 tg after an hour of work, today hung on half the scale.
After turning off and on, it hung on the loading sign, and that's it. There was strong heating near the input connector.
Do you know what I discovered? with a slight wobble of the stabilizers, two on the right, their middle terminals shorted to a common aluminum radiator. The thermal pads of the stabilizers were pressed through. I redesigned the cooling system with 3 pads.
I was lucky that the device survived. Judging by the messages above, the breakdown of the tantalum capacitor is a consequence of this. Do not delay with the modification, you may be next )))

[xrunner]

My 815 tg after an hour of work, today hung on half the scale.
After turning off and on, it hung on the loading sign, and that's it. There was strong heating near the input connector.
Do you know what I discovered? with a slight wobble of the stabilizers, two on the right, their middle terminals shorted to a common aluminum radiator. The thermal pads of the stabilizers were pressed through. I redesigned the cooling system with 3 pads.
I was lucky that the device survived. Judging by the messages above, the breakdown of the tantalum capacitor is a consequence of this. Do not delay with the modification, you may be next )))

Due to your post I have just taken mine apart. My thermal pads were not punched-through. However, I will replace them all.

I did notice a small problem with the white insulating bushings that the mounting screw goes through. The only bushing that was undamaged was the one used with the LM337. The other three used with the LM317s were "squashed" and damaged. This is because the LM337 has a thicker metal tab that works with the white bushing thickness (I have a bag of replacements and they are the same as these). The LM317s seem to require a different white insulating bushing because when the screw is tightened it will smash the thin extended part of the white bushing that Rigol used. Does anyone agree with this observation? I can cut down the thin extended plastic of the white bushing with a razor blade if I have to, but is there another "size" that goes with the LM317 thinner metal tab thickness out there?

I will post some pics tomorrow.

Also, how about the CR2032 battery? I can find nothing on this battery used in the DSA815. Can I simply take it out and replace it with no problems at all? 

[xrunner]

Here's some pics of what I found. As I said, the white bushings Rigol assembly line used (and the replacements I have here) are meant for the thickness of the tab on an LM337, et al. You can clearly see in the close-up what happens to the bushing when the mounting screw is tightened. On the left, since it fits the thickness of the tab on a LM337, no damage is caused to the white bushing. The other three white bushings have severe crushing damage because the thinner white part is way too long for the thickness of the metal tab of an LM317.

I don't have any bushings that would fit right, and I guess Rigol didn't either (or the assembly line gorilla made a mistake), so the gorilla with a screwdriver just tightened and crushed them so the metal tab would press against the insulator / heat sink.

I'm going to fix the bushings I have so they correctly fit the tabs on the LM317s. 

[Spirex]

On my aluminum radiator, the pressed nuts stick out a little, they also pressed through the thermal pad and shorted out.
I replaced all the plastic bushings and installed two pads one on top of the other to add thickness.
If you look closely, the stabilizers are crooked and do not fit parallel to the radiator.
With two pads, everything returned to normal.

[xrunner]

How about the CR2032 battery? Can it be replaced easily with no loss of functionality? I can find no information on it.

[Spirex]

I can't tell you about the battery, I haven't changed it yet.
I don't think the licenses will be cancelled, but the time will just reset.

[xrunner]

Here's how I cut the white bushings. Now it all fits perfectly. Thank you Rigol for the exciting experience! 

[Lusus]

Can you obtain this information?

*IDN?
:PRIVate:FACTory:SKEY?

If so, pm me and I may be able to help you. 

tv84, thank you very much, you are my hero!

[Breili]

Can you obtain this information?

*IDN?
:PRIVate:FACTory:SKEY?

If so, pm me and I may be able to help you. 

And here's another person who has to thank TV84. So: Thank you very much, you are great.
CU,
Breili

[frediano]

Which utility can I use to download, for backup purposes, the firmware of my DSA815-TG ?
I have already connected an USB cable to the USB port on the back panel of the instrument, and using Zadig I have installed a WinUSB driver for the DSA815.
Now i need an utility that can read the firmware from the DSA and save it to a file on the PC.

Thanks
Frediano
 

[Fenstergucker]

Hello Frediano,

I assume you want to read and save the flash memory from the device.
Under my user name my website is linked to the program 'Messinstrumente-Skript' from me.
It works with the WinUSB driver and the following script reads and saves the flash memory.

But I'm not sure whether the flash memory can still be read with the latest firmware version. I am using version 01.18.00.02.

Peter

Code: [Select]

instrument usbtmc 1AB1 0960

data Flash
data Part
data Fram

// Part 1
Part function scpi read :SYST:FRE? 0,1048576
Part function remove block
Flash set Part

// Part 2
Part function scpi read :SYST:FRE? 1048576,1048576
Part function remove block
Flash add Part

// Part 3
Part function scpi read :SYST:FRE? 2097152,1048576
Part function remove block
Flash add Part

// Part 4
Part function scpi read :SYST:FRE? 3145728,1048576
Part function remove block
Flash add Part

// FRAM
Fram function scpi read :PRIV:CAL:DATA:RNV? 0,2048
Fram function remove block

// Save
Flash function save "DSA815-Flash.bin" template
Fram function save "DSA815-FRAM.bin" template


[frediano]

Can you obtain this information?

*IDN?
:PRIVate:FACTory:SKEY?

If so, pm me and I may be able to help you. 

MANY THANKS tv84!!!!!!!

Thanks indeed ! You are a valuable resource !

Frediano

[frediano]

Is the SSC option compatible with firmware 00.01.17 ? Or should I update to 00.01.19 ?
Are there any contraindications about installing 00.01.19 ?

TIA
Fred

[Fenstergucker]

Hello Fred,

with firmware v01.17 the SSC-DSA option was added and works.
With firmware v01.19, Sig Capture only has the MaxHold trace, the RT trace has no function. That's why I use firmware v01.18.
On the other hand, the LAN connection works much better with firmware v01.19.

Peter

[frediano]

Hello Fred,

with firmware v01.17 the SSC-DSA option was added and works.
With firmware v01.19, Sig Capture only has the MaxHold trace, the RT trace has no function. That's why I use firmware v01.18.
On the other hand, the LAN connection works much better with firmware v01.19.

Peter

Thanks Peter. Given that I use the USB connection only, no LAN, maybe I could update to 01.18, avoiding the pitfalls of 01.19.

TNX
Fred

[Fenstergucker]

Hello Fred,

here is my old unfinished 32-bit program for controlling the DSA. I have added a current libusb-1.0.dll and tested it with Windows 7 (3.5 MB):

[Link removed]

Unfortunately, the web pages and the quick guide are only available in German. It is not possible to read in and save data, only remote control is possible. Sometimes the program is still quite useful.

Peter

[frediano]

Thanks Peter, I will give it a try.

-Fred