[time-nuts] HP3048A Phase Noise Test System

Don Latham djl at montana.com
Mon Mar 2 17:14:11 UTC 2009

Hardware can be inexpensive. An Australian firm called Softmark sells an
USB to GPIB interface on ebay for about $35 or so. I have one, and it
works. Software is another problem entirely. If you do not have the source
code for the Hp program, you will need the manual for the 3048 with all
the needed info. I've found the GPIB to be difficult sometimes. The
Softmark comes with a dll that can be used with Visual Basic; I'd advise
VB6. Good luck.

Martyn Smith
> Hello All,
> I have a couple of HP3048A with option 301 phase noise test sets.
> I run the systems on HP Brio computers with a GPIB interface, running
> Windows 95.
> I bought the units as working systems and have no knowledge on the 3048A
> software and how it works.
> I want to upgrade the system using a laptop with a GPIB interface.
> Has anyone successfully done this?
> Would I need a special GPIB interface and how would I get the software to
> talk to the GPIB interface?
> Any help would be much appreciated.
> Best Regards
> Martyn
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Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304

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