User guide

Hardware Installation
890 USE 108 00 August 2001 119
Installing a BXT 201 Cable in a Stacked Drop Layout
Using a BXT201
Cable in a
Stacked Drop
If you are installing a stacked configuration (two rows of backplanes installed one
over the other on two parallel DIN rails), you may connect the last (rightmost)
backplane in the top row to the last (rightmost) backplane in the bottom row using a
BXT 201 bu
The BXT 201 bus extension cable is 500 mm (19.7 in) long; it may be run either from
rack 1 in the top row to rack 3 in the bottom row or from rack 2 in the top row to rack
4 in the bottom row. (See Planning a Stacked Drop Layout , p. 108.) A stacked
installation may use DTA 201 secondary backplanes in conjunction with a DTA 200
primary backplane; DTA 202 secondary backplanes cannot be used.
Both ends of the BXT 201 cable are 30-receptacle bus connectors that mate with the
30-pin connectors on the right sides of the two backplanes. A ground strap on each
end of the cable should also be connected to the system reference connectors on
the two backplanes.
The following figure shows the connection for the BXT 201 cable.
A
B