Hologic DISCOVERY A, Technical Manual

Page: 48 / 274

Discovery QDR Series Technical Manual
2-26
Table 2-15.
Analog Digital Converter Board/Integrator Multiplexor Board
Interconnection Diagram
Note 1. Some signal names are labeled differently on different schematic drawings.
Signal Signal
(see Note 1)
Description ADC Pins I/M PINS
MA1, MA2
MB1, MB2
MC1, MC2
MD1, MD2
IN0, IN1
IN6, IN7
IN2, IN3
IN4, IN5 Selects integrator
channels to be
returned to the
Analog/Digital
Converter.
JP4-1, JP4-3
JP4-13, JP4-15
JP4-5, JP4-7
JP4-9, JP4-11
JP7-1, JP7-3
JP7-13, JP7-15
JP7-5, JP7-7
JP7-9, JP7-11
MUX0- MUX3 IN8 IN9
IN10, IN11
JP4-17, JP4-19,
JP4-21, JP4-23
JP7-17, JP7-19,
JP7-21, JP7-23
GPL1, GPL2 IN14, IN15 JP4-29, JP4-31 JP7-29, JP7-31
MGN1, MGN2 IN12, IN13 Controls integrator/
multiplexor gains.
JP4-25, JP4-27 JP7-25, JP7-27
LTCH1, LTCH2 IN16 Latches control
signals on Integrator/
Multiplexor.
JP4-33
JP4-37 JP7-33
JP7-37
INTEG IN18 Controls signal
integration.
JP4-35 JP7-35
DISC IN19 Discharges the
integrating
capacitors.
JP4-39 JP7-39
TSTEN IN20 Test signal used to
verify the operation
of the integrators and
multiplexor when no
X-rays are present.
JP4-41 JP7-41
BB0
BB1
BB2
BB3 Integrator signals to
the Analog/Digital
Converter.
JP2-2
JP2-6
JP2-10
JP2-14
JP11-2
JP11-6
JP11-10
JP11-14
+15V
15V_RET
-15V
Powers the amplifiers
and switches of the
Integrator/
Multiplexor board
and powers the Solid
State Detector
boards.
JP1-5
JP1-4
JP1-3 JP10-5
JP10-4
JP10-3
+5V Powers the digital
circuitry of the
Integrator/
Multiplexor board.
JP1-2 JP10-2
GND JP1-1 JP10-1