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Figure 16. 3494 CX0 and CX1 Frame (Front View)
Figure 17 on page 18 shows the rear (without the rear door) of the 3494 CX0
Frame, with the following functional components:
1 3494 AX0 VTCs
Two or four 3494 AX0 VTCs may be installed in the 3494 CX0 Frame. The
3494 AX0 VTCs provide interconnection between the 3494 B18, B10, and
B20 VTSs and host system ESCON attachments.
The position numbers for the 3494 AX0 VTCs are 0, 1, 2, and 3. Position 0
is the lowermost position; position 3 is the uppermost position. When the
3494 CX0 Frame contains only two 3494 AX0 VTCs, they are in positions 0
and 1.
2 Primary Control Compartments
The primary control compartments distribute power to the 3494 AX0 VTCs
in the 3494 CX0 Frame. The lower primary control compartment powers
the 3494 AX0 VTCs in positions 0 and 2. The upper primary control
compartment powers the 3494 AX0 VTCs in positions 1 and 3.
17
Chapter 1. Introduction
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