The Lab::Measurement project provides Open Source control of Test & Measurement devices with Perl. This post introduces the new Test & Measurement back end modules Lab::VXI11 and USB::TMC. Both VXI-11 and USBTMC are open standards and are supported by most modern T & M devices. They were developed as alternatives to the legacy GPIB (General Purpose Interface Bus). The main purpose of GPIB is to transfer text messages between the measurement PC and an…