· Up to 115.2 kbit/s
· Balanced current loop
· Independent of speed and code
· Galvanic isolation and transient protection.
· Status message transmission
· Transmission distance up to 21 km
· Easily installed
· 230 V, 115 V, 12-36 V DC, 24 V AC
The D-1 asynchronous short-range modem
guarantees trouble- free data communication over
distances up to 21 km with serial communication
RS232/V.24. It provides a reliable extension of data
lines. D-1 is a DIN rail version with internal
transformer for 230 V (115 V), or (D1-DC) 12-36 V
DC, 15-29 V AC.
The D-1 short-range modem permits data speeds up
to 115.2 kbit/s with full/half duplex, half simplex. Ver y
reliable data transmission is ensured by a tristated
balanced 10 mA current loop. This technique permits,
in addition to data trans-mission, the transmission of
a status signal in both directions.
The status signals in a 9-pole D-SUB connector are
selected with jumpers on the circuit board. See block
diagram on the next page. The signal interface X1 is
designed in accordance with the specifications EIA
RS232-C and CCITT V.24/V28.
The status of PWR ( Power on) RD, TD and DCD are
indicated on the front panel of the modem.