I am an amateur seismologist. I currently have three seismometers running into an a/d board where the analog signal is processed and then sent to a monitor on the wall.
The software has all the times except there is no display on each trace for a minute mark
I'm wondering what people are doing today to get single pulses out at predetermined times?
Years ago, I built this circuit using decade counters and divided down to the pulse / minute
While it worked great, it wasn't very accurate over time
I know there are clock chips which have embeded crystals for accuracy, but have never used one
or know exactly what to look for. Any assistance in pointing me to a device or two would be great.
I am going to build buffer amps for each input, configuring them as summing amplifers with no
gain.
I also need to be able to change the signal from the clock output to set the pulse height on the
display. I'm guessing a pot as a voltage divider before the summing input? Or is there something
inherent with the clock chips that I can vary the pulse output?
Thanks a ton for any suggestions
The software has all the times except there is no display on each trace for a minute mark
I'm wondering what people are doing today to get single pulses out at predetermined times?
Years ago, I built this circuit using decade counters and divided down to the pulse / minute
While it worked great, it wasn't very accurate over time
I know there are clock chips which have embeded crystals for accuracy, but have never used one
or know exactly what to look for. Any assistance in pointing me to a device or two would be great.
I am going to build buffer amps for each input, configuring them as summing amplifers with no
gain.
I also need to be able to change the signal from the clock output to set the pulse height on the
display. I'm guessing a pot as a voltage divider before the summing input? Or is there something
inherent with the clock chips that I can vary the pulse output?
Thanks a ton for any suggestions