Poul-Henning Kamp wrote: >In message <[EMAIL PROTECTED]>, John Ackermann N8UR writes: > > > >>In theory, the bus is supposed >>to handshake to avoid that problem, but that's not always reliable on >>the older instruments -- they will report that they're ready for another >>command when in fact they aren't. In fact, while doing this experiment >>the 5370B would show "Err 1" (invalid command) on its display if I tried >>to talk to the 3456A too soon after talking to the 5370. >> >> > >Are you 100% sure this is a problem on the 5370B ? > > Nope. It might be in the 3456A, particularly now that I know the 3456A has a memory problem. But I have seen the timing issue show up in other ways, for example if I do a write to the 5370B and then an immediate read, sometimes the read fails. inserting (IIRC) 500uS of delay after the write caused that problem to go away.
John _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
