Com1 Connection - ob DD2050 Use And Maintenance Manual

3.4 COM1 CONNECTION

Fig 3.4 – COM! connection diagram (9 pole sub D)
CAUTION
Operating limits stipulated by the standard RS232:
Maximum transmission distance = 15 m
Maximum line voltage = ± 12 VDC
For connection to external devices, use a screened cable
and connect the screen to the metal cap of the 9-pin
connector.
1-26
Key:
DCD232 = Data Carrier Detect
DSR232 = Data Set Ready
RX232 = Received data
RTS232 = Request to send
TX232 = Transmitted data
CTS232 = Clear to send
DTR232 = Data terminal Ready
RI232 = Ring Indicator
GND = GND
DD2050