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Model 914-X Series Modular Multiplexer System User Manual
Focal Technologies Corporation
Page 10-2
A Moog Inc. Company
Document Number: 914-0601-00
Rev.
5.0
10.2 Card Stacking
Expansion cards are stacked using the expansion connectors as a high speed backplane system. Ensure the
orientation of the cards match, and observe the genders of the expansion connectors. Male connectors are always
on the top (component) side of the board, and female connectors on the bottom.
1. Bench level testing of the 914-HDE system should be performed prior to permanent installation of the cards
using Loctite and/or epoxy. This will allow all interfaces to be configured and tested with the user equipment
prior to committing to the assembled hardware configuration.
2. Mounting order:
a.
Top card
: Optical card(s) [914-CWDM; 914-FOS; 914-SPLIT]
b. Media converter card(s) [914-HDV2]
c. Low speed expansion card(s) [914-AX; 914-DX]
d. Medium speed expansion Card(s) [914-VDX; 914-EX]
e.
Base card
: Motherboard [914-HDE]
3. Install the 914-HDE Motherboard to a suitable mounting plate.
a.
Use the 5/32” standoffs with thermal gap material under the card to provide a good conductive
cooling path to the mounting plate and/or enclosure.
b. Alternatively ensure there is adequate airflow to provide cooling to the 914-HDE Motherboard.
c. If no expansion cards are required, install the supplied nuts with Loctite 290 (or similar).
d. If expansion cards are required, move to step 4.
4.
Install the supplied 21/32” standoffs with Loctite 242 (or similar) to the 914-HDE or 914 card directly under
the next expansion card.
a. Stack the expansion card carefully onto the expansion header while lining up the standoffs to the
mounting holes. The card should seat directly down on all sides simultaneously with little
resistance.
b. Optionally install a 914-HDE high speed ribbon cable with Loctite SI 595 CL RTV for expansion
connector retention. Refer to Section 10.3 for details.
i. Complete the first card with supplied nuts and Loctite 290 or similar.
ii. Start the next stack with the male end of the ribbon cable epoxied to the bottom side female
expansion connector. Use Loctite SI 595 CL RTV to retain this connector in place.
iii. Start the new
stack with supplied 21/32” standoffs.
c. Repeat step 4 for each Expansion card.
5. Complete the stack with supplied nuts and Loctite 290 (or similar) to retain the top card.
Figure 10-2: 914-X Series System Stack