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Rs 485 Telephone Modems
  • General
  • Feature
  • Specification
The telephone modem is an industrialised dial and leased line modem that can be connected to the public telephone network with approvals for use in many different countries around the world. The unit is designed for industrial use, has a watchdog function and is galvanically isolated to provide reliable communications in harsh environments. Terminal data rates of up to 57,600 bit/s can be handled using data compression and error correction.
• RS485 or RS232 interface • Dial-up or leased line (2-wire and 4-wire) • AT-commands • Simple DIP-switch configuration • Data compression V.42bis and MNP5/Error correction V.42 (MNP 2-4; LAP-M) and MNP 10 • Watchdog, monitoring circuit • Galvanic isolation • Reliable long-distance communications
mechanical Mounting : Suitable for 35 mm DINrail mounting. Dimensions (mm): 55(W) x 100 (H) x 128(D) Weight : 0.4 kg Interface : EIA RS232-C/ITU-T V.24. RS485. Line interface : RJ-12 connector or 4- position screw block. Line : 2-wire for dial-up connections. 2-wire or 4 wire for leased line connections. electrical Power supply : 24 Vdc +50%/-50% Power consumption : 200 mA Fuse, F1 : 1.6 AF, 5 x 20 mm, Littlefuse. Transmission : Asynchronous or synchronous. Transmission speed, DET : 300, 600, 1.2k, 2.4k, 9.6k, 19.2k, 38.4k,& 57.6k bit/s. Indicators : Power, Line, Ans, Rel, TD, RD, RTS, DCD, DTR. Transient protection to line : Yes Isolation RMS power supply : 1,500 V
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