Electronics Forum / Equipment / May 2007

i want to do measurements with a FFT-spectrum-analyzer.
Assume, the displayed frequenzy range is 25.6kHz. I use 400 lines of
resolution. Thus, i have frequency points ever 64Hz (the frequency
bins are 64Hz sperated from each other). I use Hanning windowing.

I tried to measure the noise of a DSP-output when no signal is applied
to the output. I measured the "rest"-noise with an oszilloscope. The
amplitude of the signal seems to be about 2mV. Then i wanted to
analyse the power spectrum of the noise. I connected the DSP-output to

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Hi Groups,
I'm not sure this is appropriate for this group. I just got one
vintage HP Function generator. It produce very bad odor all around. I
tracked the source of this to be from bad NI-CD batteries leakage. I

I'm looking for something that will take a 10V RMS, 400Hz Sine wave
and boost it to 12V RMS (still at 400Hz). Is there a piece of
equipment that I can buy that will do this? I would rather buy
something off the shelf than make one myself. I can actually generate

I acquired an Infrared Detector in a lot but cannot locate any info
on it. It was made by Infrared Asscociates of New Brunswick, NJ,
and the label says Model Number HCT-NB-A.
Does anyone have any info on this ? I hate to trash it if it can be

I'm looking for a 12v to 7.2V (8v ok), 3A dc-dc converter - end product. I
don't mind soldering on input/output cables but want to minimize the time
modifying/building it.
The usage - have a camera flash's external power pack that has a 6x NiCd

LabX, the online marketplace for buying new and used scientific
equipment, announces the integration of Google Maps into their
"LabLinks" directory.  Buyers can search over 1,000 companies found in
the LabX directory across a variety of industries, including

The am modulation in my model 80 quit. Which tubes are used in this circuit?
The rf output is OK.
tnx, AL

   Amtronix Instruments, Inc will have HP 8924C Service Monitors at the
Dayton Hamvention May 18th, 19th in the outdoor flee market. These units
have the 60 / 125W input option. They are $1600./ea and are refurbished,
calibrated with data and guaranteed. We will be in space ...

HP used to build a pulse inverter that would take a pulse and flip it
to the opposite polarity.  It looks to be a simple design, with just a
single transformer. However, it had a rise time of less than 500 ps.
http://www.home.agilent.com/upload/cmc_upload/All/15116A-splitter-eng.pdf

I have an old M2l EZ-EP EPROM programmer and I cannot locate the
software for this thing. Can anyone point me to where I may find it?
It used to be freely available at www.m2l.com, but that website has
since gone down.

I have an electric dog fence.  We had an electrical storm the other
night, and the next day the dog fence was not working.  After some
trouble shooting, I determined the problem was fortunately not the
transmitter, but the AC adapter.  My wife was going out and I sent her

Can anyone help me to find service info for this nice 70's instrument?
Thanks - Jules

I am looking for a manual for the Philips/Fluke Logic Analyser PM 3570
but I do not find anything in the internet. Does anybody know, where
to find it?
Regards