Archive OEC UroView 2800, Руководство пользователя

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X-Ray & ABS
13
Service Periodic Maintenance Contents Schematics Illustrated Parts Installation
Pressing the Pulse button on the X-Ray Control Console to enable pulsed imaging uses the pulse rate as currently selected from the
Workstation MODE screen.
Pulse rates are:
System
Video Rate Displayed
Rate Real System
Pulse Rate Pulse Width
in ms
30 FPS 1 1 50
30 FPS 2 2 50
30 FPS 4 3.75 50
30 FPS 8 7.5 30
30 FPS 15 15 25
25 FPS 1 1 50
25 FPS 2 2.083 50
25 FPS 4 4.167 50
25 FPS 6 6.25 30
25 FPS 12 12.5 25
When pressed, the Pulse button is sensed by the X-Ray Console Switch Matrix. The button code to enable the mode is sent to
the console X-Ray Control Interface PCB and is delivered to the X-Ray Control Console CPU card plugged into the X-Ray
Control Console Backplane. The CPU checks to see if the system is in Film or Digital Spot Mode, or if an exposure is underway,
and if not, allows the Pulse command to be sent.
The output control signal from the CPU card via the X-Ray Control Interface PCB is then sent via ARCnet to the Table/Generator
Interface Card. The state of pulsed imaging is also communicated to the Workstation when the state changes. This is done so the
Workstation Status Indicator bar can indicate that pulsed imaging is enabled.
The pulse command is transferred via CAN bus to the generator interface PCB and passed on to the kV Control PCB. The kV
Control PCB CPU commands the generator to go into pulse mode using the pulse rate set up from the Workstation MODE
screen.
Low Dose
The Low Dose Mode button on the X-Ray Control Console enables Low Dose Automatic Brightness System (ABS) table control
of the kVp, mA, and camera gain technique. Pressing the button turns on the button LED to indicate the mode has been enabled.