User`s manual

Hardware Installation
Mechanical Considerations
The X5 modules conform to IEEE1386 CMC specification and ANSI/VITA 42.0 specifications. These specifications define
the size of the module and mounting requirements. In short the modules are 75 x 150 mm and mount 10 mm from the host
card. This allows the XMC modules to fit in one slot in desktop PC or compact PCI systems.
For ruggedness, the modules should be mounted to a host card using the mounting screws and standoffs. The host bracket
should securely hold the XMC front bracket so that the module is snug in the bracket opening. This reduces mechanical strain
on the XMC connectors from the front panel cable attachments.
The card may be secured to the host card with two standoffs and four screws as shown. The Digikey number is provided
(www.digikey.com) for convenience; many suppliers have these standard screw and standoff sizes.
For high vibration applications, screws should be mounted with locking compound such as Loctite.
Table 3. XMC Mounting Hardware
Description Quantity Digikey Part Number
Metric pan head screw, M3x5, 3mm x 5mm 5 H742-ND
Threaded Standoff, 10mm with 3mm thread 3 4391K
During the logic and firmware design process, some modules require access to JTAG connectors for use with the
development tools. This may require greater access space than the final installation. A variety of engineering tools are
available to assist the designer during the development process such as PCIe to XMC adapters. A cabled version allows the
module to operate outside the chassis. An open chassis may also be required to get access to the XMC during the
development process so that the cables are easily accessible.
X5-GSPS User's Manual 29