Re: [time-nuts] Isolated 1PPS-input for distribution-amp?

Anders wrote: I'm looking for a solution for galvanic isolation of a 1PPS signal-input to a distribution amplifier. * * * Does anyone have experience with a circuit with good rise-time and low jitter? Sometimes the simplest solutions can be best. In this case, capacitive coupling

Re: [time-nuts] Isolated 1PPS-input for distribution-amp?

Hoi Anders, On Thu, 31 Aug 2017 15:12:00 +0300 Anders Wallin wrote: > I'm looking for a solution for galvanic isolation of a 1PPS signal-input to > a distribution amplifier. What is the goal of the isolation? Breaking ground loops? Or safety? How much isolation

Re: [time-nuts] Isolated 1PPS-input for distribution-amp?

HCPL7101 and similar 50MBaud optocouplers claim 50ps rms jitter. Some non optical isolated couplers specify ~30ps jitter. Bruce > > On 01 September 2017 at 00:12 Anders Wallin > wrote: > > Hi all, > I'm looking for a solution for galvanic isolation

[time-nuts] Isolated 1PPS-input for distribution-amp?

Hi all, I'm looking for a solution for galvanic isolation of a 1PPS signal-input to a distribution amplifier. We have an old box using HCPL-2411 at the input followed by 74LS04, but the degraded rise-time (from below 3ns out of a clock, to >12 ns out of the box) and increased jitter (from below