GE Vivid S5 N - 5-3-3-7 Probe Management; 5-3-3-7-1 Mechanism

GE
P
ART NUMBER FN091065, REVISION 2 VS5 N AND VS6 N SERVICE MANUAL
Chapter 5 - Components and Function (Theory) 5-13
PRELIMINARY
5-3-3 RFI_AM Board (cont’d)
5-3-3-7 Probe Management
5-3-3-7-1 Mechanism
The RFI Board performs the following probe management functions:
• Controls the selection of a probe connector
• Senses the Probe type
• Senses the Scan Plane Angle on TE probes
• Senses the Probe temperature
• If the temperature exceeds the maximum temperature, the RBI stops scanning and disables
Tx voltage.
The temperature references are set to 41.3
o
C and 43.0
o
C
• If the temperature reading falls below minimum temperature, the RBI stops scanning and disables
Tx voltage.
The minimum temperature references are set to 15
o
C. A temperature reading as low as 15
o
C
indicates a probe temperature-sensing error.
Table 5-3 RFI_AM Board - Input DC Voltages
Input Description Connector - PIN# Connected From
+3.3 V DC voltage from PS P14 1-4 From PS
HVP_IN Fixed DC high voltage +80 V P14-9 From PS
HVN_IN Fixed DC high voltage -80 V P14-11 From PS
+THV Transmit high voltage
varies from 0 to +50 V
P14-12 From PS
-THV Transmit high voltage
varies from 0 to -50 V
P14-14 From PS
+5 V_IN DC voltage from PS P14-16 From PS
-5 V_IN DC voltage from PS P14-20 From PS
+12 V_IN DC voltage from PS P14-18 From PS
1.8 V DC voltage from PS P1421, 22 From PS