Hologic QDR 4500 - Page 39

Section 2 - Functional Description
2-17
Signal Description
Dist
1
Pin
C-ARM
2
Pin
STCLK+
STCLK-
Synchronizes data through the C-Arm Interface board to
the DAS.
JP1-9
JP1-10
JP1-9
JP1-10
STFRM+
STFRM-
Synchronous channel data frame from Communications
Controller through the Distribution board to the DAS.
JP1-12
JP1-13
JP1-12
JP1-13
ATD_CARM+
ATD_CARM-
Asynchronous Data from the from the C-Arm Interface
board.
JP1-15
JP1-16
JP1-15
JP1-16
SRD+
SRD-
Synchronous Data through the C-Arm Interface board
from the DAS.
JP1-18
JP1-19
JP1-18
JP1-19
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 Communications Controller 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’s 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
Notes: 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.