GE GA000100, Service Manual

Page: 229 / 802

GE H
EALTHCARE
D
IRECTION
GA091568, R
EVISION
5 VIVID E9 S
ERVICE
M
ANUAL
Chapter 5 - Components and functions (theory) 5 - 39
5-8-4-2 Location in the Unit
The Relay board is located in the Front End Rack on the end nearest to the front of the scanner.
5-8-4-3 Input DC Voltages:
• +15VDC
• +6VDC
• -6VDC
• -15VDC
• +100V PMXVPP (Voltage for Probe MUX)
• -100V PMXVNN (Voltage for Probe MUX)
Voltages provided by regulators on the board:
• +12 VDC
• +5 VDC
• +3.3 VDC
• -3.3 VDC
• -5 VDC
and
• LVDC (3.3 V/2.5A) for RT3D probe
5-8-4-4 Input Signals
•
Transmit period:
XMIT Pulses via the XD_BUS
• Receive period:
Echo signals from the selected probe
5-8-4-5 Output Signals
•
Transmit period:
XMIT Pulses to the selected probe
• Receive period:
Echo signals via XD_BUS to GRX cards