GE
D
FQ091019, R
IRECTION
Table 5-3 RFI 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 RFI stops scanning and disables
Tx voltage.
The temperature references are set to 41.3
•
If the temperature reading falls below minimum temperature, the RFI stops scanning and disables
Tx voltage.
The minimum temperature references are set to 15
indicates a probe temperature-sensing error.
5-14
2
EVISION
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
Section 5-3 - Front End Unit
Connector - PIN#
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
V
N S
M
IVID Q
ERVICE
Connected From
ANUAL
o
C