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OPERATION
2.6.5 External
Matrix Expansion
Trim tee adapters (Model 7078-TRX-T) can be used to pro-
vide daisy chain capability
between the trim input con-
External
jumper
cables must be used to expand
the
nectars. Figure 2-18 shows a typical arrangement between
number of rows in the matrix, or to connect between col-
two Model 7072 cards. Ideally, custom-length
triax cables
umns of cards installed
in different
mainframes.
An ex-
should be used to avoid the cable "jungle"
that would oc-
ample of such an expanded matrix is shown in Figure 2-17.
cur with longer, standard-length
cables.
Here, six cards are configured
as a 16 x 36 matrix. Since
the rows are internally
jumpered,
only columns must be
jumpered
externally
in this configuration.
Note that the
backplane jumpers must be removed to separate the cards
into two groups.
Figure 2-17. 16 x 36 Matrix Constructed
by External Jumpering
2-23
I
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