GFK-1504N  Chapter 2 Installation  2-39 
 
 
Installing Modules 
Module to Carrier
Connectors
 
Setting the Carrier Keying 
Keying dials on the carrier must be used to assure that the correct module type 
will be installed on that carrier. One dial selects alphabetic characters and the 
other selects numbers. These dials must be set to match the factory keying on 
the underside of the module. Refer to Appendix D for module keying 
assignments. 
Module to Carrier
Connectors