I am not sure if this is the right forum to post this but I was referred to here by another user from EEvblog Test Equipment forum
I have a 3458A with the S/N sticker missing.
The firmware revision is 9.2
Is there any way I can read the serial number of the instrument?
ID? only says HP3458A and it does not understand SCPI
The serial number is not stored in firmware. If someone ripped it off the back, it is gone forever.
The serial number is not stored in firmware. If someone ripped it off the back, it is gone forever.
yes it looks like it has fallen off
isn't it stored in any NVRAM that can be dumped?
The serial number is not stored in firmware. If someone ripped it off the back, it is gone forever.
yes it looks like it has fallen off
isn't it stored in any NVRAM that can be dumped?
No.
Even inside the instrument, there is no redundant sticker.
Frank, one of the first HP3458A users (1989)
do you have a cal sticker on it, sometimes you can do a reverse search if it was stored at the cal facility, traceable
do you have a cal sticker on it, sometimes you can do a reverse search if it was stored at the cal facility, traceable
it only has an Electrical Safety Check sticker by Keysight from July 2023 but that does not have any work order number on it.
Cal seals on the screws are intact.
it seems to be working properly. Passed self tests and ACAL ALL at least 15 times by now. No errors but I am still not sure it is really
flawless or not. So maybe it has a drift problem which needs long term testing? I dont know...
I am not a volt nut and never had a 3458A before and never studied about them so it's all new to me.
I am contacting the seller to see if he knows anything. I can return it if he cannot provide a reasonable answer
Worth checking if is stored in the calibration string. CALSTR? from GPIB or keypad
Still I would like to do the short term A3 drift test (as per service note 18A) using the CAL? 72 but I cannot keep the unit running 24/7 for 7-10 days.
I can run it for like 5-6 hours per day.
Is it ok to run it say 6 hours a day and get the temp and cal?72 after an ACAL at the end of each day and then turn it off and repeat the next day to
gather enough data?
or is it mandatory to run the unit 24/7?
It doesn't count if it isn't running, needs to be 247.