Signal analyzing apparatus for time sequential signals

Claim 1

Signal analyzing apparatus for time sequential electronic signals comprising: a. a plurality of light emitting diodes positioned in line relationship; b. a photo-sensitive medium responsive to the said light emitting diodes; c. means for moving the said photo-sensitive medium, in contacting relationship, past the line of light emitting diodes in a direction substantially at a right angle to the line of light emitting diodes, at a manually controllable variable velocity; d. an amplifier having manually controllable variable amplification, amplifying the said time sequential signals and providing a first output and a second output; e. means including a scanner cooperating with the said first output of the amplifier for sequentially scanning the said first output over the said line of light emitting diodes; f. means cooperating with the said scanner for manually controlling the said scanning rate; g. a trigger pulse generator cooperating with the said second output of the said amplifier providing a trigger pulse output responsive to manually selectable amplitude levels of the said time sequential signal; h. means responsive to the said trigger pulse cooperating with the said scanner for automatically synchronizing the scanning rate of the said scanner responsive to the said trigger pulse; and i. means for manually selecting either the said manually controlled scanning rate or the said automatically synchronized scanning rate.