This precious thing allows me to connect my GPSDO and have very stable 10MHz output, so all test equipment can use it as reference. The GPSDO itself provides very stable frequency, but has “only” an OCXO inside. So, long-time stability comes from GPS, but now short-time stablility also comes from the rubidium standard and not from the OCXO anymore. So more long- and short-time stability!
Continue reading “Symmetricom Rubidium Standard”Category: English
General logic ICs of the 74xx series
This is a list of number of pins and the function of general-purpose logic ICs of the 74xx series. There is also 54xx and 40xx series.
Continue reading “General logic ICs of the 74xx series”View 500MHz on Tektronix TDS380
This is how the old good Tektronix TDS380 acquires a 500MHz signal from Marconi Instruments 2031 signal generator. Very stable, calm trigger and display. No jumping around, albeit using 16x averaging.
Continue reading “View 500MHz on Tektronix TDS380”Playing with the oscilloscope
This is frequency modulated signal on a oscilloscope, but the carrier frequency is lower than the modulation frequency.
Continue reading “Playing with the oscilloscope”Juniper JunOS fwdd commands
Those commands can show you the status of fwdd:
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