Connection To The Serial Port; Changing Modules - Black Box ME621A Manual

MODULAR FIBER CAMPUS DRIVER, MFCD PLUS

4.2 Connection to the Serial Port

The serial port interface on the Campus Driver uses interchangeable modules.
Each module has a 50-pin card-edge connector on one side and a serial port on
the other. Figure 4-3 below shows how a Module plugs into the back of the Campus
Driver.
Figure 4-3. Installing a plug-in serial interface module.
4.2.1 C M
HANGING
When you purchase a particular version of the ME621A or ME620A, it should be
shipped to you without any modules installed. The modules mentioned on page 7
are ordered separately. If you need to install one of these Modules, follow these
steps:
Removing an Existing Module
1. Turn the power switch off. Leave the power cord plugged into a grounded
outlet to keep the unit grounded.
2. Loosen the two thumbscrews on the module by turning them
counterclockwise.
3. Grasp the two thumbscrews and gently pull the module from the unit. Apply
equal force to the thumbscrews to keep the module straight during the
removal process.
Installing the New Module
1. Make sure the power switch is off. Leave the power cord plugged into a
grounded outlet to keep the unit grounded.
14
ODULES