[time-nuts] Prologix VRBOOT error

Matt Ettus boyscout at gmail.com
Tue Jun 3 20:11:31 EDT 2008

On Tue, Jun 3, 2008 at 5:03 PM, Prologix <support at prologix.biz> wrote:
> Hello Matt,
> It appears your Prologix GPIB-USB controller is in firmware update mode.
> Please follow these steps:
> 1. Disconnect USB cable and GPIB cable. If the controller is plugged onto an
> instrument, unplug it.
> 2. Connect USB cable.
> 3. Connect GPIB cable, or plug onto instrument.
> Let me know if you have more questions.

That seems to fix things.  Simply unplugging USB isn't enough -- I
have to take it off the instruments as well.

How do I keep from getting into that mode in the first place?  I need
this to work reliably without having to reconnect it several times a


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