[time-nuts] OT: Prologix GPIB and HP3478A...

John Miles jmiles at pop.net
Wed Nov 28 01:25:43 EST 2007


Did you try sending ++auto 0 before powering up the 3478A?

This setting is persistent, so you should only have to do it once to keep
the board from automatically addressing the 3478A to talk.

Also try disconnecting any/all other RS-232 devices from your PC during
initial testing, and/or try a different USB port.

-- john, KE5FX

> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Chuck Harris
> Sent: Tuesday, November 27, 2007 9:55 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] OT: Prologix GPIB and HP3478A...
>
>
> Hi Brooke,
>
> I'm sending the commands as I type them in Kermit.  Surely that is slow
> enough.
>
> I cannot send any commands to the 3478A.  The simple act of asking the
> prologix to do anything other than ++ver, locks up the prologix so it
> ignores all USB traffic.
>




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