Hello. Restoring an E4407B (more on that later) but confused by the "installed" license keys.
The preamp does NOT appear on the 'Amplitude' menu.
Can you tell me what keys should be available?
s/n = US40241127
Host ID = 2B411207
Update: I tried removing option 1D6 (Time-gated SA) since it also did not appear in the menu as it should per the installation note. I then tried to reactivate it with the key as shown... "License key invalid" error.
Can someone PLEASE look up this unit and tell me what license keys it should have. Would be much appreciated.
More info on this unit: has option E57 which apparently was for the Navy and makes it an E4407S.
See here: https://www.keysight.com/upload/cmc_upload/All/e57.pdf
Also, I replaced the front panel and now the line of garbage in the hardware screen is gone and displays as it should.
Makes me wonder if the EEPROM on that board was corrupt AND maybe the EEPROM on the processor board could also be corrupt. (no s/n on the exterior of the unit so no way to verify that it's correct!)
I searched our license system and it has no records for either the serial number or the HostID. (Doesn't necessarily mean it's not valid, it could just be too old for the system since it sold in 2000)
Yes, our system shows it as an E4407S.
I also looked for the production data on it, but it has long since been archived.
I also searched by the sales order number, but no data either.
Sorry, but I hit a dead end everywhere I looked...
Thanks for looking Mike. I guess I'm a bit stuck. From what I can tell from the E57 specs, option 1DR is the only license key that really should be there, unless other options were purchased later. I don't dare remove 1DR and attempt to restore it fearing that it might be gone forever.
A bit concerned that since the EEPROM on the front panel was trashed that perhaps the one on the processor board has some garbage data in it. The thing I am really trying to fix is the pesky "frequency reference error". The 10 MHz looks very solid (10.000,000,08 MHz after 8 hrs) so think this might be a "bogus" error.
I also see your request for assistance coming in from our call center. Can you send us, or post, a picture of the serial tag on the rear of the instrument? This might help to figure this all out.
Oh, and by the way, older instruments such as this didn't actually have license keys, we didn't use them for these instruments until a couple of years later, we just flipped a bit for each option.
I also looked at the licenses that you show in the image above and they do not match this instrument. Is the picture from a different instrument?
Can you also send images of other instrument screens? Show System, Show Hardware, etc..?
Yes, I asked the call center as well. Unfortunately, the tag on the rear has been destroyed either by accident or on purpose. (!!!) Was that way when I bought it (Ebay).
Here are a few more screen shots and YES, this instrument:
The HARDWARE screen is AFTER I replaced the front panel; the original one had a corrupt EEPROM so the serial number and other info was gone.
I will look again at the rear cover but I do not think the s/n is there anymore. I must admit I am confused about the keys… if they were not used, why are they listed?
PS – trying to track down the Frequency Reference Error – no luck yet. The L_100MHz_UNLCK signal is TRUE (low) from the reference board, but have yet to find out why.
FYI. The call center was slightly helpful; they sent me a key for Option 1DR but it does NOT match what is listed on the Licensing screen. (?) They suspect that perhaps the Processor board was replaced and has the wrong options, SN and host ID. I could be screwed. And yup, the sticker on the rear has been destroyed. Sad.
Retrieving data ...