. The Bell System technical journal . ideo amplifier now consists of two Hewlett Packard wide band dis-tributed amplifiers, having a baseband width of about 175 mc. Thesecond one of these has been modified to give a higher output sweep circuits for this oscilloscope have been built especially forthis use, and produce a sweep speed in the order of 6 feet per micro-second. An intensity pulser is used to eliminate the return trace. Theseparts of the system are controlled by a synchronizing output from thepulse generator 100-kc oscillator. A precision phase shifter is used atthe receiv
. The Bell System technical journal . ideo amplifier now consists of two Hewlett Packard wide band dis-tributed amplifiers, having a baseband width of about 175 mc. Thesecond one of these has been modified to give a higher output sweep circuits for this oscilloscope have been built especially forthis use, and produce a sweep speed in the order of 6 feet per micro-second. An intensity pulser is used to eliminate the return trace. Theseparts of the system are controlled by a synchronizing output from thepulse generator 100-kc oscillator. A precision phase shifter is used atthe receiver for the same purpose that a range unit is employed in radarsystems. This has a dial, calibrated in millimicroseconds, which movesthe position of a pulse appearing on the scope and makes accuratemeasurement of pulse delay time possible. Fig. 4 also shows the appearance of the pulses obtained with thisequipment. The pulse on the left-hand side of this trace came from the PULSE SIGNAL 9000 MC SYNC SIGNAL100 KC TW TUBES VIDEOAMPLIFIER. INTENSITY PULSER 100 KC PRECISION PHASE SHIFTER SWEEPGENERATOR
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
