The LDM485 is a compact RS-232 to RS-485 converter which features a complete electrical isolation barrier and heavy duty electrical surge protectors. These devices feature a rugged aluminum enclosure small enough to mount on the back panel of typical computer equipment, saving valuable desk and floor space. Isolation is provided by optical couplers and a DC-to-DC converter. The RS-232 connection is through male or female EIA 25-pin connectors. The RS-485 connections are made through convenient solderless screw terminals.

Features

• Interface : Isolated RS-232 to RS-485 Converter
• Common Mode Isolation : 1500V surge, 1000V continuous
• Baud Rate Range : 0 - 57.6K bps
• Max. Data Distance : 8 miles (13.3km)
• Max. Multidrop : 64 units
• Modes : 4-wire full duplex, 2-wire half duplex, 2-wire simplex
• Channel Lines : TD, RD, RTS, CTS
• Control Lines : RTS, CTS, DTR, DSR, RLSD
• MTBF : > 100,000 hrs
• Power : Host or External Powered (-12V DC, +12V DC, 12V AC)
• Operating Temperature : 0 to +70C