Accession Number : AD0614778

Title :   A TAPE RECORDER NEGATIVE-TIME AND TRANSIENT TRIGGERING SYSTEM,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Rubinstein,Robert I. ; Long,Martin L. ,Jr.

Report Date : OCT 1964

Pagination or Media Count : 24

Abstract : A Negative-Time and Transient Triggering System (NETATT) has improved the systematic playback of transient phenomena stored on magnetic recording tape. A specific recorded trigger signal previously required to initiate the oscilloscope display of the recorded transient phenomena is no longer necessary. The NETATT System utilizes the passage of the transient phenomenon or any other simultaneously recorded transient signal across the recording head of the tape recorder as the trigger. Since the recording head in most tape recorders precedes the playback head, the system significantly increases the amount of pre-transient display available and permits the experimenter to locate the displayed transient on any preselected portion of the oscilloscope screen at varying sweep speeds without the loss of desirable information. The NETATT System provides many of the advantages of a tape searcher without incorporating its disadvantages. The NETATT System is capable of performing functions that are impossible to perform with a tape searcher. The specific transient radiation effects observed on a photomultiplier tube with the NETATT System are described. (Author)

Descriptors :   (*TRANSIENTS, TRIGGER CIRCUITS), (*MAGNETIC RECORDING SYSTEMS, TRIGGER CIRCUITS), (*TRIGGER CIRCUITS, TRANSIENTS), MAGNETIC TAPE, OSCILLOSCOPES, DISPLAY SYSTEMS, RADIATION EFFECTS, PHOTOMULTIPLIER TUBES, ELECTRON TUBES, INSTRUMENTATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE