MARTECH RCD PRO
Module designed to work with RNS510 (Siemens/VDO, Continental, Columbus) navigations
Martech CLIP with RCD PRO activation
12V/3A power supply to power the radio
LTTL to RS232 converter
cable with 26pin connector for Navi system
Diagram connection scheme for RNS510
LTTL RS232 converter schematic you can find at www.martech.pl/forum. You can make it on the basis of standard MAX232, also. Power signal can be taken directly from pin1 of RJ45 PORT2 of CLIP.
There is no need to use Martech Expander for these units. In the absence of a plug-for navigation system, you can use a regular slot with the goldpins in 2.54mm pitch.