User's Manual

Table Of Contents
NACOS Platinum
ED 3100 G 140 / 04 (2011-11)
Operating Instructions
I-5 NACOS Platinum Graphical User Interface
I General.fm / 10.11.11
I-50
There are different possibilities available to verify the alive status of the MFD which are listed and
explained below.
The Time Display
The system provides feedback that it is still active and operating, i.e. alive. This is specifically indicated
on each MFD in the title bar of the HMI by the seconds changing in the time display.
If picture freeze occurs, all data on the screen as well as the display of the seconds will be frozen, so
that the operator is able to notice this fault.
The Cursor and HMI
Picture freeze caused by the computer or the graphics adapter of the MFD can also be recognized by the
fact that moving the trackball or the mouse does no longer change the cursor position on the screen.
If the computer or its application software has a severe fault it can also happen that the cursor is still
moving but a click on any HMI element (for instance an operable button on the screen) is no longer
working correctly.
The RADAR Video
The transmission of the radar video from a connected transceiver to the MFD is monitored continuously.
If the connection to the transceiver is disturbed or completely lost, the respective alarm messages
describing the reason for the fault are given (See chapter 7.15 on page A-81 for details).
If the refresh of the radar video is not possible, the alarm No RADAR Video is issued; the video in the
PPI is cleared and will no longer be updated.
If no such alarm is indicated and you want to check the alive status of the radar transmission and the
PPI update you should switch off all signal processing of the radar video, increase the video gain to
maximum in order to visualize all targets and eventually clutter in the vicinity, or - as a minimum - make
the video noise visible on the PPI. If the video noise is visible and is changing at each antenna rotation,
this part of the system is alive and operable.
In order to make the rotating antenna sweep visible, you can
- "Step up and down with the radar range, or
- "Change the video gain between minimum and maximum.
In both cases the update of the video sectors on the PPI should be observable.
The Monitor
A green LED at the lower right corner of the MFD monitor indicates the running connection to the MFD
computer. If the connection is lost or disturbed, the LED will stay green but start flashing once per
second and the screen will normally become dark. If the LED changes to orange the monitor is in stand-
by mode waiting for sync signal, red indicates the switched off status. The LED will flash red in case of
excessive temperatures.