DESIGNER’S HANDBOOK 4189350049C EN
Page 112 of 206
Min backlight level
(local) is the backlight level that equals a dimmer value of 0 %. This setting should never be
set to 0 since it turns the backlight totally off, and it will no longer be in accordance with regulations for a display-
based bridge product. The valid value range is 0-100 out of the total of 250 backlight steps.
This is a local setting for the XDi itself and can be used to level minimum backlight level between several XDi units
placed next to each other.
Max backlight level
(local) is a function that makes it possible to fine-tune the max backlight level equal to 100 %.
This is useful to equalise the light level on different XDi units sitting next to each other or to match other screen-
based equipment using the same dimmer control input. Default is 250, and valid value range is 50-250 again out of
the total of 250 backlight steps.
Note: To extend backlight life on the XDi 192 display this value is automatically reduced to 225 in all XDi 192
libraries, when the library package is generated / released.
Start-up/Menu dimmer level
is the
default dimmer level % if no dimmer input is available and also the minimum
level when the menu structure is entered. This should not be set to a value below 20 %.
Global min offset level:
this function offers the possibility to adjust the minimum backlight level for all XDi units in
a dimmer group on the CAN bus. This global minimum level is added to the local minimum dimmer level.
Display calibration:
This function makes it possible to adjust the display colours, so that it is possible to adjust a
brand new service unit to an aged XDi where the display colours has changed.
Please see
“Appendix 1: Colour calibration - service instruction
for a detailed explanation and service instruction.
This function is only available in XDi libraries with version number 2000 or higher with a release date after
25.03.2020.
10.1.4.1
Dimmer source
The dimmer input source is preconfigured in the selected product profile (PP), but it may be manually adjusted
during installation.
The dimmer source can be preconfigured in PP to be:
•
Digital option
(DX1) push-buttons connected to the digital inputs.
•
Analogue input
(AX1) voltage source is connected to the Dim/HV3+ input.
•
XDi-net
dimmer signal is received in XDi-net data format via CAN
•
NMEA (
NX2) a NMEA DDC sentence is received on one of the NMEA inputs.
•
CANopen PDO converter
is used to convert and un-map TPDO or RPDO dimmer data
•
Front buttons
up/down adjustment on front.
It is always possible to shift from a preconfigured dimmer source to XDi-net as dimmer source (and back to
the default source). Shifting to another source type than XDi-net requires selection of a PP supporting this
type of source.