2- Theory Of Operation - Chattanooga Intelect Genisys 2776 Intelect Genisys 2782 Intelect Genisys 2792 Service Manual

2- THEORY of OPERATION

2.1 Overview
The Intelect/Genisys Ultrasound Therapy Systems are comprised of several PC board assemblies housed within a
common enclosure. These assemblies each support a distinct function in the product. The basic elements are User
Interface, Control Board, Ultrasound Board, Ultrasound Applicator, and Power Supply Circuits.
2.2 Power Supply Circuits
A universal input power supply provides all parts of the system with 12 volts DC. The supply is connected to the mains
at all times when the cord is attached. The power switch on the top of the unit, switch the 12V output of the power
supply to the different components in the system by way of the Power Distribution Board. The 12V supply is regulated
locally at each PC board as required.
2.3 Control Board
The Control Board serves just as its name implies. It controls the operation of the ultrasound board, user interface and
optional accessories. The control board communicates to the ultrasound board through a proprietary 8-bit parallel bus.
The control board drives the display. The control board reads the menu buttons. The control board also reads the
amplitude and the contrast control on the system. Sound output is generated by the control board and routed to an
internal speaker.
2.4 Ultrasound Board and Applicator
The ultrasound board generates the 1 or 3.3 MHz output to drive the ultrasound Sound Head. The ultrasound
board is accessed much like an I/O port by the control board. It can provide current and voltage information
about the ultrasound output of the board. The calibration data for the Sound Head is passed through the
ultrasound board from the applicator up to the control board. By storing the calibration data in the applicator
there is no calibration necessary for the ultrasound board. Calibrated Chattanooga Group Ultrasound Applicators,
designed specifically for the Intelect/Genisys Ultrasound Therapy Systems, can be connected and operated to
provide accurate coupling and output.
2.5 User Interface and Accessories
The LCD display panel provides the operator visible feedback in the way of menu choices. Pressing the menu
buttons makes selections from the menus. The control board interprets these user inputs and responds
accordingly. Audible feedback is given as well for events such as keypresses and end of treatment.
The Optional Battery mounts in the system bottom and supplies 24 VDC to the power supply. The Power Supply
distributes the power required to the system as needed. The charging circuit for the battery is incorporated on the
Control PCB. An icon on the display reflects the available amount of charge in the battery. When the system is
connected to an approved power outlet and a battery is installed in the system, the system will charge the battery
to full capacity. The incorporated charger will not overcharge the battery.
Intelect ® /Genisys
3
® Ultrasound Therapy Systems