Several time ago, I looked for a way to redirect measurement performed by 34401A multimeter to an old application which expected to receive the value from the keyboard. It was a test program developed several year before and it was very boring to read the screen of the multimeter and input the value by hand using the keyboard. Moreover, sometimes happened that the technician made a mistake and the recorded value was wrong.
So far, I haven't find any utility able to do that. I decided to develop it and you can find it using a well know search engine. Its name is Serial RS232 to Keyboard WedgeKey Utility for HP Agilent Keysight 34401A.
Hope it could be useful for other technicians like me.