4.3. Handshake and other properties
4.3.3 General properties of the RS 232 interface
Only a shielded data cable (for example, METROHM D.104.0201) may be used to con-
nect the Dosimat with external devices. The cable shield must be properly grounded on
both instruments (pay attention to current loops; always ground in a star-head formation).
Only plugs with sufficient shielding may be used (for example, METROHM K.210.0381
with K.210.9045).
46
The Dosimat is configured as DTE (Data Terminal Equipment).
The RS 232 interface has the following technical specifications:
• Data interface according to the RS 232C standard, adjustable
transfer parameters, see page 18.
• Control characters: C
• Cable length:
Start
7 Data Bit
(ASCII DEC 13)
R
L
(ASCII DEC 10)
F
max. approx. 15 m
Parity Bit (even)
1 Stop Bit
765 Dosimat