FUJITSU M304X - Manual (Page 83)

6.2.2 Physical specifications of interface signals
The physical specifications of RS-232-C interface signals of electrical
specifications, interface cable specifications, and connector pin assignment
s p e c i f i c a t i o n s .
Electrical specifications
Signal levels must be within the following ranges:
Low level (off) -3 v or less
High level (on) V or more
Note: These signal levels are measured at the interface connector.
Signals with incorrect levels may be sent at power on and power off.
The interface signal transmitter and receiver must be the same as those
shown in Figure 6.2.
. Transmitter
-12 v
Semiconductors or equivalents
. Receiver
Signal
ground
100 PF
Semiconductors or equivalents
Figure 6.2 RS-232-C interface signal transmitter and receiver
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