902fx/fxe & 904fx /fxe half duplex setup, 902/904 note, Rev. c & d boards are hard wired for port1 = hdplx – B&B Electronics 900-PM - Manual User Manual

Page 8: Rev. b & e boards are hard wired for port1 = fdplx

(Revised 8/3/2009)

902FX/FXE & 904FX /FXE HALF DUPLEX SETUP

All 900 series fiber modules are factory configured for full duplex operation. The setting is controlled
by jumper JP1 on the backplane.
Note: Most 100Mbit fiber systems will be compatible with this Full Duplex setting. If Half Duplex
operation is desired, then follow these steps using proper wrist strap grounding techniques:

1. Remove the power & power plugs from the unit.
2. Loosen all thumbscrews & remove all modules.
3. Remove the six screws holding the backplane
4. Remove the backplane.
5. Move the jumper JP1 from position 1-2 to 3-4
6. Re-install the backplane & modules & power plugs.

902/904 Note:

Rev. C & D boards are hard wired for Port1 = HDPLX,
Rev. B & E boards are hard wired for Port1 = FDPLX.

JP1