Service manual

Revision 2/18/05 3 - 25
Hardware Description
Data Sheet: VIASYS 800VA Isolation Power Supply
Functional Description
This 800VA isolation power supply provides power to
the VikingSelect computer mounted on the G2 cart.
An input voltage selector provides settings of 110, 120,
220, or 240 VAC. The voltage selector is located behind
the panel directly above the line voltage input connector.
A separate selector switch allows you to select isolated
AC output voltages of either 115 or 230 VAC.
Two internal supplies provide ±15VDC, +12VDC and
+5VDC to power system peripherals.
Connector/Switch List
1. AC Input Voltage Selector & Fuse Holder
2. Output Voltage Selector for IEC 60320 connectors
(Normally covered by a sticker.)
3. Eight IEC 60320 Connectors
4. Microphone Preamp Power (±15VDC)
5. EEG Amp Power (±15VDC, +5VDC)
6. CPU Auxiliary Power for Nic Boards (± 15VDC)
7. Speaker Power (+12VDC)
8. External Stim Power (±15VDC)
9. 1394 FireWire Port from Computer
10. FireWire Ports for Amplifiers
11. Ground Lug
12. Photic Stim Power (Non-isolated)
1
23
4
5
67
8910
11
12
A
C In
AC Out Receptacles
1394 Port from Compute
r
Amplifier 1
Amplifier 2
Mic Preamp Power
EEG Amp Power
CPU Aux Power
External Stim Power
Speaker Power
600 VA
Transformer
Condor
GLM66-15
Supply
Condor
GLM55C
Supply
+15VDC
RTN
-15VDC
+5VDC
+15VDC
RTN
FireWire
Power Board
FireWire
Iso-Connector
Board
+12VDC
Regulator
Isolated Power Supply Connections & Block Diagram