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Use the following directions to connect the CPU to the SPS and other motherboards.
1. Connect P3 on the SPS to P1 on the CPU motherboard using the 8 wire harness
with eight-position Molex minifit connector (provided).
2. Make sure the 10 way, right angle header, connector P3 on the CPU is secured to
J1 on the next motherboard to the left. Repeat this for the third (leftmost)
motherboard, and on if applicable.
The power distribution interface (PDI) mounted to the back of each expansion cabinet
carries 24V Card power and data to each 4”x 5” card.
Refer to “Step 7: Installing Modules into Expansion Bays (4100U)” for instructions on
mounting 4”x 5” cards to the PDI. Also bear in mind the following variations:
• In a remote expansion cabinet, a transponder interface card (TIC) requires additional
interconnections. This occurs in MINIPLEX systems. Refer to Chapter 3.
• Regular motherboards require non-PDI interconnections to each other and to the
CPU. Refer to “Step 5: Installing Modules into Expansion Bays (4100U).”
The 4 wire harness 734-008 is used to carry 24V Card power and coms from bay to bay.
Connector P1 on the PDI receives power from the previous PDI or from P6 on the SPS
(or alternatively from P7, P8 on the CPU Motherboard). P2 on the PDI is used to carry
power and coms to a 64/64 Controller. P3 is used to carry power and coms to the next
PDI.
Jumpers P4 and P5 on the PDI are set to positions 2-3 (right) to provide card power
to the bay only if an XPS is fitted to the PDI. Jumpers P4 and P5 are set to positions
1-2 (left) to provide card power to the bay from P1 on the PDI.
Note: Interconnections can become more involved if 4100 motherboards are
used. Refer to “Step 5: Installing Modules into Expansion Bays (4100U)”
if this is the case.
Continued on next page
Step 4. Interconnecting Modules and Bays, Continued
Card
Interconnections in
the CPU Bay
Card
Interconnections
Within Expansion
Bays
Basic Bay-To-Bay
Interconnections