Matrix E-blocks Manual Del Usuario página 9

Using covers
In some circumstances it is advisable to
only allow access to certain parts of the
E-blocks boards. This includes situations
where settings or chip selections made on
E-blocks do not want changing, where there
is a chance of vandalism, or where there
is a chance of theft of components on the
E-blocks themselves.
To facilitate this clear acrylic covers are
available for all E-blocks.
Covers are mounted onto E-blocks with
25mm M3 bolts and 10mm or 12mm spacers
using the same grid of holes that are used
for mounting the E-blocks to the backplane.
The cross section diagram in Figure 7 shows
how this is done. The tight fitting clear
acrylic covers add considerable strength to
each E-block as well as making them - to
some extent - tamper proof. The exception
to this is the switch board which, because
the switches are relatively short, requires
the spacers to be replaced with M3 lock nuts
before the cover is put into place.
Further security
If you are concerned about the security of
your E-blocks systems themselves then it is
possible to attach them to a bench using a
Kingston style lock.
Clear acrylic cover
PCB
Backplane
25mm M3 bolts
Figure 7 - cover side profile
Making your own equipment
In addition to the backplanes it is also
possible to buy rugged plastic storage trays
for E-blocks. These are slightly larger than
a metal backplane which means they are
ideal for storage and distribution of E-blocks
based systems. Lids, packing and freight
boxes are also available.
Making your own E-blocks
The prototype and patch boards that are
part of the E-blocks range, allow you to make
E-blocks with your own circuits on.
9