GE Vivid S5 N Service Manual page 331

P R E L I M I N A R Y
GE
P N FN091065, R
ART UMBER
5-3-3 RFI_AM Board
Table 5-3 RFI_AM Board - Input DC Voltages
+3.3 V
HVP_IN
HVN_IN
+THV
-THV
+5 V_IN
-5 V_IN
+12 V_IN
1.8 V
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
• If the temperature reading falls below minimum temperature, the RBI stops scanning and disables
Tx voltage.
The minimum temperature references are set to 15
indicates a probe temperature-sensing error.
2
EVISION
(cont'd)
Input Description
DC voltage from PS
Fixed DC high voltage +80 V
Fixed DC high voltage -80 V
Transmit high voltage
varies from 0 to +50 V
Transmit high voltage
varies from 0 to -50 V
DC voltage from PS
DC voltage from PS
DC voltage from PS
DC voltage from PS
Chapter 5 - Components and Function (Theory)
VS5 N
Connector - PIN# Connected From
P14 1-4 From PS
P14-9 From PS
P14-11 From PS
P14-12 From PS
P14-14 From PS
P14-16 From PS
P14-20 From PS
P14-18 From PS
P1421, 22 From PS
o o
C and 43.0 C
o
C. A temperature reading as low as 15
VS6 N
S M
AND ERVICE ANUAL
o
C
5-13