Telematrix DC640 User Manual
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Caller Identification (Caller ID) LCD Display Adjustments
LCD TILT ANGLE FEATURE
The LCD can b e t ilted u pward for
direct vi ewing and e asy reading.
Tilt the LCD to the desired position
by lifting up the back of LCD hous-
ing (Figure 1).
(60° maximum upward tilt).
LCD CONTRAST FEATURE
(16-step)
The LCD c haracters can be l ight-
ened or d arkened u sing t he c on-
trast UP/DOWN keys (Figure 2).
While the hands et i s i n the O N
HOOK position, simply press the UP
or DO WN ke ys to adjust th e con-
trast of the L CD screen. T here are
16 contrast st ep a djustments
(Figure 3).
To l ighten c haracters, pre ss the
“UP” key.
To darker c haracters, pr ess the
“DOWN” key.
The display will clear 3 seconds
after the last key press or after
pressing the EXIT key.
C O N T R A S T
█ █ █ █ █ █ █ █ █
Figure 3
PRESS THE UP OR DOWN KEYS
Save
Select
Exit
Figure 2