SRM-5A Short Haul Modem Campbell Scientific Vietnam

 

Short haul modems provide local communication between data loggers and computers. Typically, two modems are required—one at the data logger end and one at the computer end.

Overview

The SRM-5A, manufacted by RAD, is an asynchronous modem used for local communication between a data logger and a computer. Two SRM-5A Short Haul Modems are required: one at the data logger end and one at the computer end. Each short haul modem transmits over an unconditioned 4-wire telephone line or the CABLE2TP two-twisted pair cable. Data rates up to 9,600 bps are possible.

Benefits and Features

  • Provides the easiest link for communicating with one data logger over longer distances
  • Low voltage transmission levels minimize crosstalk between adjacent lines within the same cable.
  • Data are transmitted and received at a balanced impedance, providing excellent immunity to circuit noise.
  • Transmits up to 6.2 miles using 19 gauge cable at 9600 bps
  • Transmits up to 7.6 miles at 1200 bps