Hologic DISCOVERY A, Technical Manual

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Discovery QDR Series Technical Manual
2-29
Notes: 1.C-Arm = C-Arm Interface board
2.ADC=Analog/Digital Converter board.
2.14 Torroid Power Module and DIN Rail
The Torroid Power Module provides the AC voltage required by the Discovery Operator's
Console computer system and the Scanner. The module is located behind the pedestal at
the foot end of the table and consists of a Main Power circuit breaker, a Power On
indicator, and a torroid AC line input isolation transformer. The Main Power circuit
breaker and the Power On indicator are located on the rear of the Pedestal enclosure. The
isolation transformer is located inside the Pedestal enclosure.
AC power from the Torroid Power Module is sent to the Scanner on a four-wire cable
providing split 240 volts to the DIN Rail. (Refer to Figure 3-1 and Figure 3-2 for a
drawing of the C/W or A/SL versions of the DIN Rail). From the DIN Rail, unfiltered AC
is fed to the line filter and, from there, distributed to various sections of the Scanner.
Unfiltered AC is also fed to an AC outlet connector at the rear of the Electronics Tray.
This outlet provides AC power to the Operator’s Console power strip. A second AC outlet
provides unfiltered AC only while x-rays are being produced. This outlet is used in the
factory to give a visual indication of x-ray production during testing.
+15V
-15V
15V_RET
+7V
Powers the Data Acquisition System.
JP10-32
JP10-33
JP10-36
JP10-37
JP10-30
JP10-31
JP10-34
JP10-35
JP10-38
JP10-39
P1-32
P1-33
P1-36
P1-37
P1-30
P1-31
P1-34
P1-35
P1-38
P1-39
CONTINUITY Emergency shutdown daisy chain (grounded on
ADC board)
JP10-1 P1-1
Signal Description
C-Arm
1
Pin
ADC
2
Pin