Agilent 1958-02 free download

File name 1958-02.pdf

HEWLETT-PACKARD JOURNAL T E C H N I C A L I N F O R M A T I O N F R O M T H E - h p - L A B O R A T O R I E S \/.»l O KJ*» A PUBLISHED BY THE HEWLETT-PACKARD COMPANY, 275 PAGE MILL ROAD, PALO ALTO, CALIFORNIA FEBRUARY, 1958 Increased Operational Simplicity In a New DC -Several Hundred K C Oscilloscope HE NEW -hp- Model 120A Oscilloscope Models 130A and 130BR and includes an auto JL shown in Fig. 1 provides the engineer a matic no-signal base line feature that sub wider equipment choice from which to match stantially simplifies set-up adjustments. The instrumentation performance and economy to excellent phase-shift-measuring characteristics the measuring problem without sacrificing of the Models 130A and 130BR are also pres SEE ALSO quality, precision or ent, although the circuitry of the amplifiers in "New -hp- R & D convenience. The in the 120A is not identical as it is in the 130A Arrangement," p. 6 strument has been de and 130BR. signed for the applications that require an AUTOMATIC BASE LINE oscilloscope with medium-high sensitivity in SWEEP ARRANGEMENT the vertical amplifier combined with an accu The automatic no-signal base line is de rate, high-quality sweep system, but where signed to reduce to a large extent or even only medium sensitivity is needed in the hori eliminate the searching with the vertical and zontal amplifier. Specifically, the 120A has a horizontal positioning controls that is often maximum vertical amplifier sensitivity of 10 necessary when an oscilloscope is first turned millivolts /cm, a maximum horizontal ampli