Fast Ethernet Media Converter – Installation Guide
3
Installation
The module comes equipped with a bank of DIP switches and
jumpers for setting configuration.
The default DIP switch settings (all switches in the UP position)
and jumper settings will work for most installations..
The following steps are used to configure the Perle Fast
Ethernet Media Converter Module:
1. Set the Auto-MDIX jumper (optional).
2. Set the Auto-Config jumper (CM-100 only) (optional)
3. Set the DIP switch settings (optional).
4. Insert the Media Converter Module into the chassis.
5. Connect the fiber cable.
6. Connect the copper cable.

Auto-MDIX Jumper

Note: The factory settings for Auto-MDIX will work for most
installations, but if there is a need to modify the settings, follow
the procedure below.
The AUTO-MDIX jumper (J5) is located on the upper edge, at
the midpoint of the module (see diagram below for labelling). By
covering or strapping pins 1 and 2, the C-100 and CM-100 will
operate as an MDI device. By covering or strapping pins 2 and 3,
the C-100 and CM-100 will automatically detect the Ethernet
cable’s polarity and configure itself as either an MDI or an MDIX
device. Removing the strapping is the same as AUTO.
NOTE: The default jumper setting is Auto