Service manual

Revision 2/18/05 2 - 19
System Overview
VikingSelect
Introduction
This section describes the VikingSelect at the block
level. The order of topics are:
1. Power and Power Distribution
2. Computer Platform
3. Patient Signal Path
4. Stimulators
Power Distribution
The power supply and power distribution system for the
VikingSelect contains the following components:
• FireWire Isolation power supply (GII cart)
• Isolation/FireBrick power supply (UniBody cart)
FireWire Isolation Power Supply
The FireWire Isolation power supply provides isolated
A.C. power to the GII cart-mounted assemblies and
auxiliary D.C. power to the Stimulus Controller, and the
FireWire Amplifier assemblies.The FireWire Isolation
power supply is designed to receive A.C. voltages of
100, 120, 220, and 240VAC. There are two A.C. voltage
selector switches: one for input voltage selection and the
other for output voltage selection.
USB
Mouse
Keyboard
Processor
FireWire
Interface
Card
To Network
Isolated
Power Supply
USB Printer
Monitor
Amplifier 1
Amplifier 2
IES-16
Electrical
Stimulator
IES-2
Electrical
Stimulator
AS-1
Auditory
Stimulator
SC-1
Stimulus
Controller
NIC-105A
RIGHT
NIC-105A
LEFT
Power
AES
115
120
%
S403
%
S403
VikingSelect Acquisition Station Components