Hi Anders,
with my counters, I put a 10 MHz sinewave from the GPSDO (thunderbolt)
on channel 1 of oscilloscope, triggering on it, then I put the
counter's 10 MHz reference to channel 2 and I trim the reference until
there's no (or barely) shifting of the timebase signal with respect to
the fixed (triggering) 10 MHz from GPSDO.
HTH
Frank IZ8DWF
On Tue, Oct 10, 2017 at 1:58 PM, anders.gustafsson@...
[hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
What would be a reasonably cheap way of checking frequency calibration? I have an old hp 5328, with oven. I also have one of those cheap GPS modules where the PPS output can be reprogrammed. I set it to 1kHz and the counter showed 1.0000kHz. Sounds good?
There are u-blox modules that can be reprogrammed to output 10MHz and the 5328 can use an external 10MHz for timebase. Would such a module (below) work?
