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Agilent E7495 linux root account

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Wallace Gasiewicz:
I just did an apparently successful upgrade to 6.25.
However, I cannot do the time/frequency patch
There is no egServer file nor any elgato that I can find anywhere.
[root@Linux /root]$cd /flash goes to [root@Linux /flash]$
cd /egServer : No such file or directory
Any suggestions?
Wally

Wallace Gasiewicz:
OK I did copy Telnet copy elgato to my computer, Linux is new to me, taking a while to comprehend.
However the binary (HEX) address 0x0122880: does not look like  4b2585e2152882e2 in the very least. I am using Frhed. I replaced it with de2585e23f2882e2 anyway and the e7495 boot stopped at the copywrite screen.
Had to reinstall 6.25 from PCMCIA. e7405 works fine . Yellow triangle still present. Date is 2004

Why is my code different?

UPDATE
I did update to 6.25
I got several copies of the zip all were 23104 KB
unzipped,put on PCMCIA Card
Rebooted the e7495 with the card
Seemed to work fine,
Copied elgato
my copy is 5224025 bytes
another person on this site quoted his file was 5195908 byes
Obviously I cannot do the time/freq patch since I cannot find the correct hex to modify
upgrade files on the PCMCIA are:
xImage  version  reloadFFS  ramdisk.gz
and folders upgrade and firmware_upgrade

what am I doing that is wrong???
what am I missing???

ddcc:

--- Quote from: technogeeky on March 27, 2019, 04:10:46 am ---Can we also get the same picture without annotations -- for A/B comparison to see your notes?

--- End quote ---

Here's the base image.



--- Quote from: technogeeky on March 27, 2019, 04:10:46 am ---Also, can we get some shots from a low angle (say, 30 degrees up from the plane of the board) so we can see the size and configuration of RF gaskets and such.

--- End quote ---

Attached are some more images. The gasket seems to just be a separate layer of metal foil that is sandwiched between the PCB and the metal enclosure; I lined it up with the metal walls as shown in the photo.

ddcc:
I plan to do a writeup with some more photos once (if) I manage to fix this receiver. The odd part about this problem is that the loss measurements are consistently too high, and they don't seem to be affected by whatever is connected to the source port. Today, I had a 10db attenuator connected, so I'd expect around 20db of return loss, but the measurements hit -10db!

The generator definitely seems to be working though, when set to a frequency sweep for 1.5 GHz to 1.5001 GHz return loss measurements, I see the correct signal at the coupled port. I also see some weird reflections at the transmitted port, I'm not sure if this is normal? But I don't think the problem is with any of the switches, because I see the signal all the way back on the analyzer input path (although the signal is radiating enough that I can see it without even probing the board), and because I'd expect the measurements to be super low if the switches failed, since there'd probably still be a bit of parasitic coupling? I'm wondering now if the rework performed on my unit might have something to do with this problem.

kirill_ka:

--- Quote from: Wallace Gasiewicz on March 30, 2019, 06:39:25 pm ---Copied elgato
my copy is 5224025 bytes
another person on this site quoted his file was 5195908 byes

--- End quote ---
It was definitely LF -> CR-LF converted. FTP transfer in text mode I guess. Switch FTP to binary mode.

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