Siemens MOBILETT Plus Manual page 15

Structure of the functional description
The block diagrams and the wiring diagram X037E are the basis for the functional
description given below.
The block diagram, which you can fold out from front page, is divided into three basic
functional areas.
In the upper area, together with the power-line connection to board D8, are the reference
value requests with Control and display panel on board D3 and the actual value signals
from the single tank.
In the central area CPU board D1, on which two microprocessors for signal control and
for regulation and monitoring tasks are located, is shown.
As the main processor an SAB 80C535 8 bit processor is used. This implements the user
interface and supervises most of the non time-critical signals.
For the supervision of real-time tasks during exposure, such as parameter regulation and
monitoring, and for tube current integration to give the mAs product, an SAB 80C166 16
bit microprocessor is used.
In the lower area the power components and the power consuming components are
shown.
•
capacitor-charging circuit on board D7
•
capacitor bank, M1
•
high-voltage inverter on board D13
•
multifunction board D4,
•
X-ray tube / single tank H1
•
collimator lamp in Z66
•
turn-plate solenoid PM, MOBILETT Plus only
Siemens-Elema AB
Solna, Sweden
a) filament-circuit inverter
b) anode-plate drive inverter
c) collimator-lamp control circuit
d) turn-plate control circuit.
Register 6 SPR8-215.850.02
Rev. 01 01.02
4
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