B&K Precision 2640 - Manual - Manual (Page 66)

66
Menu
There are two modes. One is Multi key function with the Shift Key
and the other is to select other functions.
It can select the functions using multi key and in Menu.
The functions that could be selected in Menu mode is as blow
To exit from Menu or System, push the Menu Key or push the Dot
key. These keys will move through the menu either lower or higher.
Level Unit
Reset
Band Rate
Connect PC