Human HumaStar 300, Service Manual

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test Program
259
17.7.2 HoSt CoMputeR Setup
HuMaStaR 300 has a built-in serial line RS232 (COM 1) that enables to pre-
set the communication speed via its software. Such modification takes place by
programming the serial port via the computer board. For further information
see
section 16 paragraph 16.5 .
The Host computer that is connected to the HuMaStaR 300 , has to have its
transmition parameters preset. (default values) as follows:
19200, n, 8, 1, Xon/Xoff
17.7.3 ConneCtionS
The HOST computer has to be connected to the serial port 1 of the
HuMaStaR
300 (COM 1), by a serial cable with the following connections:
HOST COMPUTER (DTE) HuMaStaR 300 (DTE)
DB9 DB25 DB9
2 3 ------------------------------------- 3
3 2 ------------------------------------- 2
5 7 ------------------------------------- 5
17.7.4 pRotoCol StRuCtuRe
The data exchange is organized in packets. These can be classified as:
prologue packet: sends first a file indicating the number of lines that will be
transferred. Followed by the structure of that data packet:
He “ “ + NumberO “ “ + Ch CR
data packet: sent after with the following structure:
He “ “ + Data “ “ + Ch CR
“ “ this character is a space with the value of (ASCII 32 - HEX 20)
- HeadChar: is a sinle character at the start of a line, such as:
“R” (Risults) in case of transmition
“P” (Patient) in case of reception