User manual

Page 34© 2009 Active Research Limited
Connection Status LED’s:
The four status LED’s inform the
user what stage the reprogramming
operation is currently at.
Initially no LED’s will be lit. Once a
successful connection is made to
an NDC-4 unit, the Connected LED
will light. During the reprogramming
operation, both the Erasing and
Programming LED’s will become lit, and nally, once the
operation is complete, the Success LED with light. It is
normal for the success LED to only stay lit for a second or
two, after which it will turn off.
Data Communication LED’s:
These LED’s indicate if any data
communication to the NDC (Tx) and
from the NDC (Rx) is happening.
They are very useful in helping to
diagnose simple connection issues.
Program command button:
Becomes available/selectable once
connection to an NDC-4 unit is
achieved. This button Initiates the
ash update of the NDC hardware.
At this point the diagnostic LED on
the NDC-4 will be solid red.
The reprogramming operation
Once the program button has been pressed, the
reprogramming operation cannot (and must not) be
stopped and must complete successfully - otherwise the
NDC hardware will become unusable.
To this end the user must take all precautions to prevent
loss of battery power to the NDC, or communications with
the NDC hardware. If there is a failure with either of these,
the reprogramming operation must be restarted - once the
original issue has been removed.
Progress Bar:
During the reprogramming operation the progress bar will
be visible. This indicates how much of the two stages has
been completed and how much is left to do.
During the Erasing operation, the bar is red showing the
Flash memory being erased (cleared).
During the Programming operation, the bar is green (with
a red background), showing the new rmware being written
to the ash memory. Once the green progress bar reaches
the far right hand side, the operation will be complete and
the Success LED will light for a second or two.
The successful completion of the rmware update process
can be further checked by looking at the ID display area.
The Main ID (Current Version) and the Patch ID (New
Version) will now be identical - proving that the new
rmware is now safely inside the NDC-4.