Chapter 1
Overview
The front and rear panels
4460 GSM System Option and 4468 EDGE System Option
Version 12.20
19
The numeric keys
With the help of the numeric keys, you enter parameter values on entry fields.
Important function keys mainly used in combination with the numeric keys
deletes the character left to the cursor on an entry field.
confirms all the changes or entries.
The cursor keys
With the help of the
(
L
EFT
) or
(
R
IGHT
) cursor keys, you navigate the
cursor from one entry field to the previous or next one.
The
(
U
P
) or
(
D
OWN
) cursor keys allow you to increase or
decrease the parameter value on a numeric entry field or to step through the
predefined settings of a selection field.
The selection key
This wheel is used to quickly change values on entry fields.
When the cursor is positioned on an entry field (the entry field is then inverted),
a turn on the selection key directly changes the value. Any change made with the
selection key is instantly confirmed. It is not necessary to push the
E
NTER
key
Altering numeric values:
navigate to the required entry field.
Clockwise rotation (i.e. to the right) of the selection key increases the value,
counterclockwise rotation (i.e. to the left) decreases it.
