25/08/2004 ©
Söring
Service-Manual Arco- and RF-units
1
not valid for A-3000/ -2000
2
not valid for Arco-2000
-48-
3
not valid for MBC600
4
not valid for Arco-1000
10. Description of interface board
The interface board serves for the data communication between CPU and the module. It
is part of the coagulator- and the cut module, each of them contain this board.
Electrical properties:
Voltage supply:
±
15 Volt, 0 Volt (GNDA)
+5 Volt, 0 Volt (GND)
Data input: 12 bit
(Connector J1)
Data output: 6 analog outputs
(Connector J2) 8 bit (digital)
Data back-transfer: 2-bit module back-transfer signal, DOWN-signal for
high Power supply (connector J2 & J3) to module
status bus
Via connector J1 and the optically isolated module control-bus driver the interface board
receives module control data and address data from the CPU. The module control data
appearing at the output of the opto-coupler array are stored in the intermediate memory-
1, after intermediate memory-1has received the clock signal (strobe) from the decoder.
In the following the CPU transmits address data to the interface board. These address
data determine by chip selector and address comparator which of the following units
(D/A-converter 1/2/3/4/5/6 or intermediate memory-2) has to take the data from
intermediate memory-1.
The stored data are transferred to the module via the module connection (connector J2),
which supplies the interface board with power. The module sends a back-message to the
CPU via J2 and J3.
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