Backplane Configuration
Backplanes (MIBS)
The key to flexibility in Cubix Systems is the backplane. It is installed in the bottom of the system, and determines how many CP, DP or SP Series plug-in computers can be installed.
MIBs and Possible Configurations
Table 1 displays the MIB configurations available in the Density Series Systems.
MIB P/N |
Description |
Notes |
Group Configurations |
400-A06220 |
8x2 Backplane w/MMX or CEL |
8 Groups |
Group 1 through Group 8 MMX or CEL + 1 Shared ISA/PCI Slot |
400-A06230 |
4x2 + 2x3 Backplane W/MMX, CEL or DP* |
6 Groups |
Group 1 through Group 4 MMX or CEL + 1 shared ISA/PCI Slot Group 5 and Group 6 DP* + 1 shared ISA/PCI Slot |
400-A06200 |
4x3 Backplane w/DP* |
4 Groups |
Group 1 through Group 4 DP* + 1 shared ISA/PCI Slot |
400-A06530 |
1x1 MMX or CEL + 3x3 Pentium II |
4 Groups |
Group 1 MMX or CEL only Group 2 through Group 4 Pentium II with 2 PCI Slots |
Table 1 Density MIB Configurations
*DP Density Series backplanes can have various processors, e.g. Pentium Pro, Dual Pentium II, Single Pentium II, MMX or Celeron (CEL) processors.
Density Power Control Modules
Following are the current trip points as set by the Density Control Modules.
Maximum Current Overload Trip Points - MIBs
MIB 400-A06220 (8x2 MMX/CEL) - GROUPS: G1-G8
GROUP VOLTAGE |
+5V |
+3.3V |
+12V |
-12V |
-5V |
MAX GROUP CURRENT |
11.5A |
1.5A* |
4.0A |
1.0A |
0.1A |
MIB 400-A06230 (4x2 MMX + 2x3 DP) - GROUPS: G1-G4
GROUP VOLTAGE |
+5V |
+3.3V |
+12V |
-12V |
-5V |
MAX GROUP CURRENT |
11.5A |
1.5A* |
4.0A |
1.0A |
0.1A |
GROUPS: G5-G6
GROUP VOLTAGE |
+5V |
+3.3V |
+12V |
-12V |
-5V |
MAX GROUP CURRENT |
19.5A |
1.5* |
6.8A |
1.7A |
0.1A |
MIB 400-A06200 (4X3 DP) GROUPS: G1-G4
GROUP VOLTAGE |
+5V |
+3.3V |
+12V |
-12V |
-5V |
MAX GROUP CURRENT |
19.5A |
1.5*A |
6.8A |
1.7A |
0.1A |
MIB 400-A06530 (1X1 CEL +3X3 PII) - GROUPS: G1
GROUP VOLTAGE |
+5V |
+3.3V |
+12V |
-12V |
-5V |
MAX GROUP CURRENT |
11.5A |
0A |
4.0A |
1.0A |
0A |
GROUPS: G2-G4
GROUP VOLTAGE |
+5V |
+3.3V |
+12V |
-12V |
-5V |
MAX GROUP CURRENT |
19.5A |
3.0A* |
6.8A |
1.7A |
0.1A |
*1.5A to each PCI slot
The +3.3V is generated from +5v.
The +5V current plus the +3.3V current cannot exceed the maximum +5Vcurrent.
How to Identify MIBs
On the back of the Density Series System, the I/O slots are numbered. If there are 16 numbered slots, the MIB will be 400-A06220. If there are 14 numbered slots, the MIB will be 400-A06230. If there are a total of 11 slots, the MIB will be 400-A06530. And, if there is a total of 12 slots, the MIB will be 400-A06200.
The cover can also be removed from the top of the Density System
and, depending upon the types of processors installed in the Density CPU bay, the Cubix
Corporation logo may be able to be viewed. The MIB P/N number can be found below the
Cubix Corporation logo. However, it should noted that access to the CPU bay is restricted
to service personnel only.
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