Sir, At Raipur Airport using TVS 455 XC printer in serial port distance approximate 60 feet .earlear it was printing ok but now printing garbuled ,change intair cable with new one ,but now printing is not proper (garbuled). kindlly sugesse for printig at this distance(60 feet),whether any line driver is required pls give quotation with full specification . Kishore kumar lahre AGM(CNS) S.V. Airport Raipur(C.G) Mob-8827322161