Mocomtech CIM-550 Manuel D’Utilisation

 

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The user can fully control and monitor the operation of the CiM-550 modem from the 
front panel, using the keypad and display. Nested menus are used, which display all 
available options, and prompt the user to carry out a required action. 

The display has two lines each of 24 characters. On most menu screens, the user  will 
observe a flashing solid block cursor, which blinks at a once-per-second rate. This 
indicates the currently selected item, digit, or field. Where this solid block cursor would 
obscure the item being edited (for example, a numeric field) the cursor will automatically 
change to an underline cursor. 

If the user were to display the same screen for weeks at a time, the display could become 
‘burnt’ with this image. To prevent this, the unit has a ‘screen saver’ feature which will 
activate after 1 hour. The top line of the display will show the Circuit ID (which can be 
entered by the user) and the bottom line will show the circuit Eb/No value (if the demod 
is locked) followed by ‘Press any key....’. The message moves from right to left across 
the screen, then wraps around. Pressing any key will restore the previous screen. 

 

The keypad comprises six individual 
key switches, mounted directly behind 
a fully sealed membrane overlay. They 
have a positive ‘click’ action, which 
provides the user with tactile feedback. 
These six switches are identified as UP 
ARROW, DOWN ARROW, RIGHT 
ARROW, LEFT ARROW, ENTER and 
CLEAR.