HP 185B - The Kilomegacycle Sampling Oscilloscope
1960 - The First Sampling Oscilloscope
As described in the first period of this Quick Tour, one could says that oscilloscopes at HP were not an immediately successful product line. In the HP Way, making a contribution was an important concern when designing a new instrument. The 185A was the first HP oscilloscope to make a contribution to the waveform measurement limit of the time.
As described in the first period of this Quick Tour, one could says that oscilloscopes at HP were not an immediately successful product line. In the HP Way, making a contribution was an important concern when designing a new instrument. The 185A was the first HP oscilloscope to make a contribution to the waveform measurement limit of the time.
Just two years later, the HP 185B was introduced in the March 1962 issue of the Hewlett Packard Journal.
The 185B mainframe with the 187B drawer combination, extended the equivalent bandwidth of the previous model HP 185A to the Gigahertz region. Thus giving the Journal the opportunity to title its article with the nickname "The Kilomegacycle Sampling Oscilloscope".
Brief specifications of the 185B when used with the 187B Dual trace Amplifier were: DC to 1000 mc passband with a rise time of less than 0.4 nanosec. Sensitivity from 10 mv/cm to 200 mv/cm in 1, 2, 5 sequence. Input impedance 100 K shunted by 2 pf, nominal.
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