Display Parameters 3-89
September 2008
Chapter 3 - MTM800 Product Information Manual 6866537D87-F
Semi-Auto - If this feature is enabled, the backlight works both manually and automatically. A button
must be programmed for backlight control. The user is able to turn the backlight on or off and if
turned on manually the terminal will turn the backlight off after the backlight timer expires.
Auto - If this option is selected, the terminal will automatically turn the backlight on for button press
and call reception and turn it off when the backlight timer expires.
23.1.2 Backlight Timer
This is the ‘Auto’ option timer and it defines how long the backlight will remain on, when the terminal
has gone back to its normal standby state.
The range setting is from 1 to 30 seconds, the default setting is 10 seconds.
23.1.3 Display Contrast
This option is used to set the contrast of the terminal’s display. This setting will improve the clarity of
the information displayed and improve viewing in bright conditions.
The contrast level of the display can be set from 0 to 255 in steps of 1, the default being 32.
23.2 Home Mode Display
This sub menu has the following four options that define the text displayed during the various stages
of the terminal’s power up and idle state.
23.2.1 Home Mode Display Text
An alphanumeric text string of up to 24 characters can be entered in this field and will be displayed
when ever the terminal is in Home Mode.
23.2.2 Home Mode Display Protocol Identifier
The number in this field defines the message protocol used by the terminal to transmit and receive
messages on the control channel when in Home Mode and enables the phone to identify the type of
received message as a Home Mode Display message and take any necessary action.
Note: Protocol Identifiers. These define the action a terminal must take when a message is received.
Some messages are displayed and others are actioned by the terminal, i.e. DGNA updates.
The range is from 0 to 255, the default is 220.
For more information see: ETSI EN300 392 - 2 Paragraph 29.4.3.9 Table 439.
23.2.3 Welcome Screen
An alphanumeric text string of up to 28 characters can be entered in this field and will be displayed
as the terminal powers up.
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