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| Agilent E7495 linux root account |
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| jordi:
I wanted to take the credit but you guys are faster! I did use my HEX editor, search for the strings, and reached the same offsets: 0x033E57C for .lic trick.. and 0x0123C4C...to fix the GPS. I will report my results. :box: Thanks a lot! |
| jordi:
So I went ahead and applied the patches. Seems like the modules are now activated, so I can confirm it works. :clap: I went "options spree" and activated everything I could (check the picture attached). Power Meter -Option 600- hangs the device during boot, so I went and dig a little and find out I need am extra hardware module, it can be installed tough (I saw a few on eBay). The GPS fix seems to work (at least it didn't crash or hang the device). But I'm not sure how to test it. If I go to and try to do the time base adjustment, it won't allow me (I press start and it doesn't do anything), maybe I need to have a GPS fix before activating? So I noticed a lot of people here had some Linux difficulties, so whoever is trying to patch the elgato in the future, in either device version please read this: I did run into a problem when I was updating elgato via FTP (which as curiosity detail it means "The Cat" in Spanish, I assume the guy is obsessed with cats, hint: check at the password), somehow after rebooting it will get stuck on the Disclaimer section (I got a little white). I was lucky to spot during the boot sequence the words "not enough access privileges elgato" So I typed on my telnet terminal "ls -l" and I noticed the Linux permissions were not set correctly: -rw-r--r-- 1 root root 5224820 May 31 20:12 elgato <------Patched -rwxr-xr-x 1 root root 5224820 May 27 14:35 elgato.original <------Original backup I easily fixed it by giving the same file permissions and allow for execution, so type this from the same folder the elgato file is located (via telnet): chmod u+rwx elgato chmod go+rx elgato or all at once (I didn't try it): chmod 755 elgato If anyone wants to learn more about permissions please go here https://www.pluralsight.com/blog/it-ops/linux-file-permissions Then I reboot and problem solved. ;D |
| jordi:
kirill_ka: No, I don't have the two boards and the 2 connectors. I wonder if the boards can be replicated? Not sure about the connectors, maybe eBay them. Yes, I can confirm after activation (290) it has now the option to generate a custom waveform, you must create such files on MatLab put them on the CF and run them. No further details, we need to figure it out. If you send me a waveform I can try to run it. I will try to record some video next week of the menu and GUI, but the "military suite" has an interesting automated tool that can be customized, saved, and loaded them from your external memory (and share them). You select a set of frequencies, Gain, and tolerances and it will tell you if it passes or not. It would be very useful for manufacturing testing or if you happen to test the same devices over and over or you want to let somebody else do it and you have time for advanced training. Still waiting for my CF to arrive, <2GB cards are not very common anymore and are overpriced. But if you know a trick to just dump the entire "hard drive" via FTP, so I don't do it one by one, please let me know. |
| DogP:
That's really cool! The part that's most intriguing to me is option 520 (Low Frequency Extension for Source). While the E7495 stock sig gen does 375 MHz - 2.5 GHz, it looks like the stock L4600A does 30 MHz - 1 GHz, with options to extend down to 2 MHz and up to 2.5 GHz. So, if the hardware is actually the same, I guess that means the E7495 can support sig gen down to 2 MHz w/ the L4600A software. BTW, regarding custom waveforms... I posted this: https://www.eevblog.com/forum/testgear/agilent-e7495-linux-root-account/msg1054142/#msg1054142 and https://www.eevblog.com/forum/testgear/agilent-e7495-linux-root-account/msg1054570/?topicseen#msg1054570 for making custom waveforms to replace the existing ones. I'd suspect that the option 290 uses the same arbitrary waveform format (16-bit I/Q), but allows the file to be specified rather than having to replace built-in files (curious what the size limitations are though). As I mentioned in one of those posts though... the arbitrary waveform generator doesn't suppress the LO or image, so its usefulness is somewhat limited. DogP |
| kirill_ka:
--- Quote from: jordi on July 06, 2020, 04:19:50 am ---No, I don't have the two boards and the 2 connectors. I wonder if the boards can be replicated? Not sure about the connectors, maybe eBay them. --- End quote --- Are you sure you are desperate enough? It may be well cheaper and easier just to buy a standalone power meter. I used the measurement board from my E7495 to populate a second channel in a E4418 power meter. The board from E7495 has it's own power reference while the E4418 doesn't have the power reference on the measurement board. That's the only difference I see. The remaining hw stuff you might be missing: 1. Power reference connector. 2. Sensor connector. 3. Power meter interface board. 4. Sensor cable. 5. The sensor itself. 6. Ribbon cables. Plus you need to connect all the stuff and enable the option correctly. If you still want to go this route, I can afford you some parts I have leftover. |
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