Artesyn MVME55006E Single Board Computer Installation and Use (July 2014) - Manual (Page 35)

Hardware Preparation and Installation
MVME55006E Single Board Computer Installation and Use (6806800A37J) 35
1.7.12 Setting the PMC Vio Keying Pin
Signalling voltage (Vio) is determined by the location of the PMC Vio keying pin. Each site can
be independently configured for either +5V or +3.3V signalling. The option selected can be
determined by observing the location of the Vio keying pin.
1.8 Installing the RAM5500 Module
Procedure
To upgrade or install a RAM5500 module, refer to and proceed as follows:
1. Attach an ESD strap to your wrist. Attach the other end of the ESD strap to the
chassis as a ground. The ESD strap must be secured to your wrist and to ground
throughout the procedure.
2. Perform an operating system shutdown. Turn the AC or DC power off and remove
the AC cord or DC power lines from the system. Remove the chassis or system
cover(s) as necessary for access to the VME boards.
3. Carefully remove the MVME5500 from its VME card slot and lay it flat, with
connectors P1 and P2 facing you.
4. Inspect the RAM5500 module that is being installed on the MVME5500 host board
to ensure that standoffs are installed in the four mounting holes on the module.
Figure 1-15 VIO Keying Pin Settings
+3.3V key option on a PMC board +5V key option on a PMC board