Table 1–2 Key to Figure 1–2, Cabinet Layout, Rear View
Item
Component
Description
1
Zone A
Complete computer with enough elements to run an
operating system.
2
Zone B
Complete computer with enough elements to run an
operating system.
3
Fan assembly
Cooling device.
4
Blank panel
Not used.
5
Front End Unit (FEU)
AC input circuit breaker.
6
FEU
Converts ac power to 48 Vdc.
7
FEU
AC input connector.
8
Regulator
Pr3.3 Vdc at 30 A, +12 Vdc at 12.5 A, and
bias.
9
Regulator
Pr5 Vdc at 90 A.
10
Power system controller
Provides interface signals to the ATM module.
Miscellaneous Module Card Cage
11
Blank panel
Not used.
12
Slot 0 - Not used
For future expansion.
13
Slot 1 - Cross-link assembly
Connects Zone A and Zone B.
14
Slot 2 - Console module
Module with console port.
15
Slot 3 - Not used
Factory test module.
16
Slot 4 - Disk In/Disk Out module
Permits zone interconnections to access all
configured disks.
17
Slot 5 - CAMP module
Provides custom power control circuits.
Interface Module Card Cage
18
Slots 10 to 17
DSSI and NI interface modules.
Slots 20 to 27
For future expansion.
19
Disk device
Location for disk device.
20
Disk/tape/tape loader
Location for disk, tape, or tape loader device.
21
Disk/tape device
Location for disk or tape device.
22
Power distribution box A
AC power source for Zone A.
23
Power distribution box B
AC power source for Zone B.
24
UPS A
Optional uninterruptible power supply for Zone A.
25
UPS B
Optional uninterruptible power supply for Zone B.
Cabinet and Component Descriptions 1–5