Vco/4K Power Subsystem; General Description - Cisco VCO/4K Mechanical Assemblies

1.0 GENERAL DESCRIPTION

The power subsystem in the VCO/4K Open Programmable Switch consists of the following
main components:
• Power entry module
• Power backplane
• Power supply module (two modules in redundant systems)
This subsystem is in the lower portion of the VCO/4K system. Figure 1 shows the front of a
redundant system with the door removed and two power supply modules visible. Figure 2
shows the power entry module in the rear of the system. The power backplane is located
internally, between the power supply modules and the power entry module.
The power subsystem powers the following:
• Programmable switch logic
• Disk storage units
• Analog functions
• Ring voltage (if optional ring generator is installed)
• Cooling fans
Technical Description

VCO/4K Power Subsystem

VCO/4K Power Subsystem 1-1