Hologic DISCOVERY A - Page 37

Discovery QDR Series Technical Manual
2-15
Note: 1 Dist = Distribution Board
2 C-Arm= C-Arm Interface Board
Figure 2-7 shows the boards and assemblies that connect to the C-Arm Interface Board.
SRCLK+
SRCLK-
Synchronizes data through the C-Arm Interface
Board from the DAS.
JP1-21
JP1-22
JP1-21
JP1-22
SRFRM+
SRFRM-
Synchronous channel data frame through
Distribution Board to PCI Communication
Command Board from the DAS.
JP1-24
JP1-25
JP1-24
JP1-25
XR_ZEROX_CC+
XR_ZEROX_CC-
AC line zero-crossing signal used for system wide
synchronization. Generated by the C-Arm
Interface Board.
JP1-30
JP1-31
JP1-30
JP1-31
INTEGR_CC+
INTERG_CC-
Synchronous signal for Detector Integrate period.
Generated by the C-Arm Interface Board.
JP1-33
JP1-34
JP1-33
JP1-34
SYSRST_CARM+
SYSRST_CARM-
Resets the C-Arm Interface Board. JP1-39
JP1-40
JP1-39
JP1-40
EMERGENCY_CARM+
HW_EMGNCY_RET-
Removes power from the Scanner motor drivers
and the X-ray system
JP1-42
JP1-43
JP1-42
JP1-43
XRAY_LIGHT+
XRAR_LIGHT-
Applies power to the AUX X-RAY light outlet on
the Power Console.
JP1-48
JP1-49
JP1-48
JP1-49
CONTINUITY 1
CONTINUITY 2
Emergency shutdown daisy chain. JP1-1
JP1-5
JP1-1
JP1-5
+15V
-15V
15V_RET
Powers the Data Acquisition System. JP4-1
JP4-3
JP4-2
JP9-1
JP9-3
JP9-2
24V
24V_RET
Generates +5VDC to power the digital section of
the C-Arm Interface Board, and +7VDC for
power to the Data Acquisition System.
JP4-4
JP4-5
JP9-4
JP9-5
28V
28V_RET
Powers the stepper motors and fan. JP4-6
JP4-7
JP9-6
JP9-7
Signal Description
Dist
1
Pin
C-ARM
2
Pin