StorCase Technology S20A120 - Manual (Page 25)

18 Appendix B - Factory-Installed Options
StorCase Technology, Inc. S20A120 User's Guide - Rev. A01
Appendix B - Factory-Installed Options
Data Express Ultra160 Repeater Board
The Data Express Ultra160 Repeater Board (P/N S20A130) is an upgrade attachment for the
S20A120 (cable-less 68-pin DE300) receiving frame (Figure B-1). This attachment provides
a repeater function, as described below.
Repeater Function
Specifically in LVD/Single-Ended implementations, unknown system components and their
combinations may produce impedance mismatches, excessive capacitance loading and/or
noise interference within the system, potentially introducing intermittent incompatibility issues.
To minimize these unpredictable effects caused by varying system specifications, StorCase
recommends the Data Express Repeater Board on all Ultra160 Data Express receiving frames.
This Repeater Board provides a signal repeater function that allows the Data Express drive
enclosure to contribute to improved signal quality to and from the drive.
For more information and data, please refer to the Repeater Board Benefits and Downward
Compatibility technical papers on our web site at: http://www.storcase.com/tools
Attaching the Repeater Board
The S20A120 may be purchased with the Repeater Board factory-installed. If the board has
not already been attached to the S20A120 receiving frame, follow the instructions below to
add the board.
NOTE: The device carriers should be locked into the receiving frame prior to the
following procedure to maintain proper connector alignment between the
receiving frame and the device carriers.
1. Remove the two (2) screws from the receiving frame motherboard and set aside (Figure
B-2).
2. Attach the two (2) stand -offs (provided) to the mounting holes on the receiving frame
motherboard.
4. Carefully align the connectors of the repeater board with the connectors on the
receiving frame motherboard and gently push the board into position. Make certain that
all connectors are properly mated.
5. Secure the board to the receiving frame stand-offs with the same two (2) screws from
Step 2 (Figure B-2).