Svan brand low cost 64 kb data testers [model pcmdt i] have built in transmitters and receive codirection code pattern to test 64 kb data circuit features include easy detection of data link failure of working system audio visual indication for error g 703 co directional data bandlinjg and ccitt requirements of 0 to 30 db loss met most favourably the data testers are compact and handy suitable for moblie use and are available in size of 300 mm l * 200 mm w * 105 mm h and work on 12 v 48 v dc
