4 Install the Fiber Module (Optional) Proceed to Step 5 if you are not using a fiber module.
The standard 10/100 TX module installed in the CenturySwitch may be replaced by a
Set the Backpressure Jumper
Prior to installing the fiber module, you must set the flow control/ backpressure jumper labeled “JP2” on the printed circuit board. See the diagram below for its location.
•Connect jumper pins 1 and 2 to enable backpressure.
•Connect jumper pins 2 and 3 to disable backpressure. (default)
1 2 3
JP2
Jumper JP2
Set the Duplex Mode Switch
Each fiber module can be configured for half duplex (HDX) or full duplex (FDX) operation by means of the slide switch located on the front panel. This switch should be set before applying power. The default setting on the modules is FDX (full duplex).
Install the Module
To install your FX module, first remove the TX interface by turning the two thumb screws counterclockwise and withdrawing the card. Replace it with the new module. Tighten both screws firmly to attach the fiber module to the CenturySwitch.
Lancast
