Kontron VMOD-2D - Manual (Page 65)

VMOD-2/VMOD-2D
12/15/97
Installation
Page 4 - 5 Man. ID 03139, Rev. Index 0200
The recommended maximum cable length should be limited to 5 meters (~15 feet) to ensure
minimum voltage drop/risk of cables becoming damaged/trapped, etc
Caution!
Ensure that the current ratings of the connected flat-band cables are
never exceeded.
4.5 Front Panel Functions
The front panel of the VMOD-2 has only the 50-pin connector on it. The odd numbered pins of
this connector are on the right side when looking at the connector from the VMOD-2's front
(see figure 4.5 below). The even pins are on the left side of the connector and the lowest num-
bers for each (odd and Even) row are at the bottom ascending. Depending on where your
VMOD-2 piggyback is fitted, you will need to use the lower half of this connector or the upper
half.
The connector (front-panel connector only) is provided with a polarizing keyway to ensure that
the made up cable cannot be inserted up-side-down (therefore to the wrong piggybacks and
with reversed connections) if at any time it has been disconnected. Two retainer/ejectors lock
the connector into place and/or help to eject it during disconnection.
To help differentiate between cables for interfacing with differently configured VMOD/VMOD-
2s we recommend a drop of colored paint be placed on the back of the connector and onto the
front panel of the VMOD to which this cable should fit. This could be very important and save
considerable time later if reconfiguring your VMEbus system. Further, in very large systems,
or where lot's of VMOD/VMOD-2's are in use, two drops of paint at the top and bottom of the
connector and on the ends of the retaining latches could provide an at-a-glance confirmation
of both piggyback types before making connections.