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DTUS065 rev A.7 – June 27, 2014
V.9.3
Not using the C-Key
To make sure that the C-Key is never used, you should blank it out (“erase”
configuration function). The C-Key LED will then light up in red; you can
configure it to disable it.
V.9.4
Replacing a product on the field
Let’s imagine a product which is installed, in use and its configuration has
been backed up on its C-Key. Now let’s imagine that the product was
damaged and needs replacement. Here is the procedure that will transfer the
configuration from the damaged product “
DP
” to the new one “
NP
”.
Requirements: a small screwdriver to unplug and plug back the C-Key.
1)
Remove the C-Key on
NP
(if any) and keep it apart; it won’t be used.
2)
Power off
DP
, disconnect cables and unscrew from its support.
3)
Dismount the C-Key from
DP
.
4)
Plug the C-Key into
NP
and screw it.
5)
Mount
NP
in its location, reconnect the cables.
If
NP
has been used previously, and you are unsure whether its
configuration disables the C-Key:
6)
Power up
NP
, wait for the “Diag” LED to turn green.
7)
Push the reset button steadily for at least 3 seconds, until the “Diag”
LED turns back red; this resets the product to factory settings. Wait until
both “Diag” and “C-Key” LEDs turn green.
V.9.5
Working with the C-Key in the lab
In the lab you may not know exactly the internal configuration or the C-Key
contents.
You can use the product with the C-Key plugged or unplugged. Always
power off the product before plugging or unplugging the C-Key.
We suggest that you disable the C-Key, but let it mounted, while testing
various configurations. When you are satisfied with your configuration you
can save it to the C-Key. The “C-Key disable” flag itself is not saved to the
C-Key.
Remember that a reset to factory settings will clear the “C-Key disable” flag.
Only a configuration action (saving or erasing) will change a C-Key
contents.
