From: "Poul-Henning Kamp" <[EMAIL PROTECTED]> Subject: Re: [time-nuts] Off the wall: anyone with experience programmingHP3456A? Date: Sat, 10 Sep 2005 20:24:25 +0200 Message-ID: <[EMAIL PROTECTED]>
> 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 ? > > I've spent a lot of time with my logic analyzer while implementing > GPIB in FreeBSD (partly because I couldn't find a datasheet for the > uPD7210 anywhere) and I have never seen my 5370B misbehave in any > way. I think I have the uPD7210 datasheet lying around here if you still need it, even for verification. I am following this thread with some interest, since I have too been bitten by the SRQ monster when (trying) to program against one of my HP3457A's. Cheers, Magnus _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
