Esa Heikkinen wrote: >> The capacitance of the 1x probe is too high. >> > > So I have to check that also: it shows 46 pF on 1x mode and 10.6 pF in > 10x mode. > > Ok so the main question is that what kind of amplifier I should use with > 10544A to get a clean signal, if it can't stand even an oscilloscope > without distortion on it's output? And what do that kind of amplifier > cost - more than HP10811, for example? > > Many other OCXO's (like thunderbolt's) can be connected directly to the > 50 ohms. load without any trouble with harmonics. > > Esa
You can easily construct a suitable buffer amplifier using inexpensive and readily available parts. It was an early design, intended to drive a 1k load located very close to the connector terminals. The buffer design depends on what reverse isolation you require and what output signal level. The venerable LH0033C has been used as a buffer to drive a 50 ohm load. However it is relatively expensive if its even available. Since this is RF you dont need the low offset voltage and drift of such a device. Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.