Tektronix 5L4N

This Analyzer is a spectral analyzer module for Tektronix Scopes of the 5000er-Series.

It possesses a frequency range of 0-100KHz, is thus an ideal audio analyzer.

Besides is an extension, whose function could not be clarified yet finally.

It seems on the one hand for external evaluations (video output, level measurement, frequency measurements etc) to be built, on the other hand one it possesses one "TVC IN", whose sense does not admit to me is.