Datasheet

Backplane Setup
7–344
2.13.3 Insertion of Termination Cards
Termination-card, AMP Z-PACK, 2-mm, 55-pin, HM male and female
connectors are identical to the clock-card connectors, and are inserted directly
onto the K and T pins used for slots 1 and 20, V
CC
, and data bits. Although the
termination card connectors are keyed on the top (see Figure 2–27), they can
be inserted backward because they are keyed on only one side.
Figure 2–27. Termination-Card Keying
Keying
Be sure that the red dot on the male connector and the card are facing each
other, to prevent improper operation. Both termination-card components face
the same direction, toward slot 20, so the key to proper operation is to inspect
for the keying and line up the red dots (see Figure 2–28). If the backplane is
not working, the proper orientation of the termination cards should be the first
thing you check. The cards can be rocked slightly side to side to seat and
remove them, but avoid bending the pins.
Figure 2–28. Slot 1 (Left) and Slot 20 (Right) Termination Cards on the Backplane