[Test-Equipment] Need help on HP-8970A

[Carl]

You just may need to find a new Trusted friend. The E-26 indicates the 
stored ENR from the noise head does not match what it now registers.

You can hang a scope on the head to see if it is functioning and then 
trace back to the 28V PS.

If the head is putting out noise it may just need to be sent out for a 
recal.

Good luck

Carl
KM1H


----- Original Message ----- 
From: "Ed White WA3BZT" <wa3bzt at verizon.net>
To: "Test Equipment" <Test-Equipment at mailman.qth.net>; "Microwave Lists" 
<microwave at lists.valinet.com>; "Moon Net List" 
<moon-net at list-serv.davidv.net>
Sent: Sunday, March 22, 2009 3:10 PM
Subject: [Test-Equipment] Need help on HP-8970A


> Hi Gang:
> Need help to figure out what is going on with a HP-8970A Noise Figure
> Meter and Noise head
> When I turn on the meter with the head connected to the input and 
> power
> I see the following
> All lights lite test
> 4 dashes then E 26
> I then key in 33.0 and press the  Special function
> I get 4 dashes then E 13
> The noise head is a Noise Com NC3108 (opt 4 [ 28 VDC])
> What do I need to do to fix this problem
> The unit worked before I received it (Trusted friend) and we are
> wondering if something happen in shipping. I have looked at all the
> boards nothing out of place everything seams to be there.
>
> Any help for the users of the noise meter will be a great help
> Ed
> WA3BZT
>
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