Access ATB420 Series Service Manual page 13

Access keyboards ATB 420/421 Multi-Function Keyboard Product Specification and Service Guide
3. Once the keyboard has been located, a set-up menu will be displayed e.g.
For serial output requirements
Keying any of the numbers (1 to 7) will toggle the parameter for that parameter, e.g. keying 6 will
change from SITA to ARINC protocol and vice versa.
After making the required changes, key 8 to save the new settings in the keyboard and terminate
the set-up process. Alternatively key 9 will exit without saving changes made. IT IS IMPORTANT
TO KEY EITHER 8 OR 9 BEFORE TERMINATING THE PROGRAM. Please note that changes
made will not take effect until the keyboard is power cycled.
Notes.
1. ARINC protocol does not allow 7 bit data on the host port.
2. 7 bit host interface is incompatible with expanded JIS.
3. The keyboard firmware version and build reference i.e. 'X' is displayed with the menu.
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