Filter
Top Products
167
Appendix D - Installation of Additional Digital Modems
Cyclades-PR4000
APPENDIX D INSTALLATION OF ADDITIONAL DIGITAL MODEMS
The purpose of this appendix is to describe the correct procedure for the installation of the digital modem board in
the PR4000. When the PR4000 is purchased with modems, the modems are installed at the factory. This chapter
should be read ONLY when modems are purchased at a later date.
The modems are extremely sensitive to static electricity, (more so than RAM), and should be handled with caution.
The body carries static electricity and if the person installing the board is not correctly grounded, the modem
board could suffer irreversible damage. Please follow the instructions outlined below carefully to avoid damaging
the board.
Step One:
Unplug the PR4000 from the power source and remove the power cord. Remove all cables connecting the PR4000
to other devices.
Step Two:
Carry the PR4000 to a workbench or table with an anti-static surface and wrist-strap. If a workbench of this type
is not available, use the wrist strap sent with the modems (a wrist-strap is not included for all countries due to
differences between electrical installations). The directions should be followed carefully. Please note that the
wrist-strap should not be connected to the PR4000 because it is no longer plugged in and thus no longer connected
to ground.
Step Three:
Remove the four top screws and the eight screws on the bottom edges of the PR4000, as shown in the figure.