Hi all!
Anyone ever tried to use one of these without the urv5 or diy own ones?
There's a little write-up here:
http://www.bymm.de/documents/15/Reparaturbericht_NRV_Z5_V1_3.pdf (sorry, it's german)
Seems there's a cal eeprom in the connector which holds 4096 bytes (the unit has an 12 bit adc... what a coincitance

...
so reverse engineering might be feasible, but if someone has already looked into this before...
regards