Got my DMM6500 yesterday and I am very happy with it.
The build quality is great and I really like the interface, it's easy and quick to navigate.
All functions are quick to access. As an electronics beginner I really value the amount of information and help hints that I can access directly in the UI.
And the amount of features is just amazing at that price.
(972,49 Euro with VAT from welectron.com, Germany)
My unit was calibrated on the first of december at Tektronix in China and came with firmware 1.7.3c preinstalled.
Only downside is the already known transformer hum.
My unit is about as loud as my fridge (with the compressor running.) which might not be horrible, but it still feels excessive.
Especially because the
Another comparison might be hum from a fluorescent tube that needs replacement.
When the DDM is on, the hum is gone (as far as I can tell.)
I think I would not mind it in an office environment, but at home the hum is just too loud and I need to cut power to it when not in use.
Btw. is there a good source explaining where that transformer hum is coming from?
The fan is noticeable, but completely ok. (I actually rather have the fan running than the transformer hum
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/grin.gif)
)
E-Design:
If your offer still stands, could you have a quick check of my Serial Number? (Cal Certificate states Revision as 00, if thats of any help)
I would rather talk to Keithley/Tektronix support to fix the hum (if a fix is available), than trying to be lucky switching units because I definitely want to keep a DMM6500!
Thank you very much in advance!