
IBM42M10SCYAA10
IBM42M10LCYAA20
1063Mb/s Gigabit Link Module
Page 28 of 30
glm1063.02.fm.02
Feb. 15, 2000
System Board Configurations
These GLMs are designed to be used in multiple configurations:
Back-to-back:
All necessary card features are offset to allow ease of installation on opposite sides of a
host card. This requires the use of female surface mount connectors on the system card.
Close pitch side-to-side:
Cards can be placed on a 36.8mm pitch by sharing common holes for L-Clip
retention.
Both:
Back-to-back and close pitch side-to-side are completely compatible.
Mechanical Features
Positive Retention:
The integrated L-Clips provide sufficient retention for most environments. Screw holes
are integrated into the retainer on the optical end of the product for use in environments with high vibration
content or where tail stock or other additional mounting hardware is not used to secure the SC connectors.
Integrated Extraction Tool:
This tool provides a simple method to remove the GLM from the host card
without requiring access to the sides or back of the card. It also minimizes stress to both the GLM and the
system card during removal of the GLM.
Alignment Pins:
These pins are integrated into the product. The center of the round pin is the GDT (Geomet-
rical Dimension and Tolerance, an industry standard mechanical drawing methodology) registration point.
These pins also provide stress relief for the 80-pin connector. This is especially important when the system
card uses a surface mount connector.
EMI Slot:
There is a small (2mm) vertical slot in the SC connector. This allows the system to cut the aperture
of SC connector in half. This is extremely important in applications where the SC connector extends outside
the system box. We strongly encourage designing the tail stock with a hole for each of the SC connectors
(i.e., have a small metal strip between the connectors).
Connector Availability
One source for the mating connectors is:
Samtec
810 Progress Blvd., PO Box 1147
New Albany, IN 47151-1147
(812) 944-6733
Samtec Part Numbers:
Pin-in-hole: FOLC-120-01-P-Q-LC
Surface-mount with Standard Clipping:
FOLC-120-02-P-Q-LC
Surface-mount with Reverse Clipping:
FOLC-120-02-P-Q-LCR