BNC 555 Series, User Manual, Page: 16 / 47

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Item Edit Mode
When the current item is non-numeric, the Up and Down arrow keys are used to select among
different options for the parameter. The adjustment knob may also be used to change the
selection. If the item is an on/off toggle, the Up arrow (CW adjustment knob) enables the item
and the Down arrow (CCW adjustment knob) disables the item.
Alphanumeric Input Mode
When the current item is alphanumeric, the system enters the Alphanumeric Input Mode. In this
mode, data is entered using the alphanumeric keypad. When entering alphanumeric values,
pressing a key will display the first letter shown on the keypad. Repeated key presses will
toggle through all the letters, both upper and lower case, shown on the keycap. To enter two
letters which appear on the same keycap, select the first character, then use the right arrow to
shift to the next position and enter the next letter. The Left and Right arrow keys may be used
to position the cursor to edit any character. When data entry is complete, the ENTER key must
be pressed. The keys contain the following characters.
• 1 1 2 3 4 5 6 7 8 9 0
• 2 A B C a b c 2
• 3 D E F d e f 3
• 4 G H I g h i 4
• 5 J K L J k l 5
• 6 M N O m n o 6
• 7 P Q R S p q r s 7
• 8 T U V t u v 8
• 9 W X Y Z w x y z 9
• 0 0 1 2 3 4 5 6 7 8 9
• . . , # $ % & ?
• - - + * / space
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