The Model 505 Automatic Waveform Analyzer provides great flexibility in automatic testing of repetitive waveform requiring high resolution. Features such as the auto delay, .2, .5,1 time base multipliers, 10 sweeps averaging and short sweep mode provide state-of-the-art accuracy in an instrument that automatically seeks out the signal and positions it with the proper time reference to the trigger* This is a tremendous asset to valid software preparation. Both the 50 ohm P20 sampling probe, for high frequency measurements, and the widely used Model P21 probe for monitoring higher impedance circuitry perform very nicely with the Model 505 Waveform Analyzer. These are ruggedized probes of a chassis machined from aluminum bar stock and excellent cable strain relief to protect the advanced sensing circuitry. The 8 xIO cm CRT with a bright sharp dual-channel display allows operation judgment of waveform qualities that could not easily be quantized. In addition, the front panel controls used in conjunction with the CRT provide an excellent software development tool for the user.