The RTAjr is a low cost precision 1/3 octave real time analyzer for PC computers, and provides a new level of powerful capabilities never before possible with conventional bench top analyzers. The complete system consists of an ISA half length PC slot card, and the Windows based operating software. Users may choose from 4 different calibrated microphones (M31, M51, M52, M53) with maximum SPLs ranging from 125dB to 170dB.

The system features built in scoring systems popular with car stereo applications for both IASCA and USAC, as well as a host of different post processing and display capabilities, only possible in a PC based analyzer.

In addition to measuring maximum SPL and 1/3 octave RTA response, the RTAjr also includes built in ANSI A, B, C weighting filters, and provides a unique feature of Impedance measurement capability. This is a very handy feature for checking speakers and crossovers for defective components or connections.