So you want a wide-spectrum signal analyzer ?
rchilder at us.oracle.com
Thu Dec 17 20:48:27 PST 1992
Here's what HP's catalog says :
Spectrum analyzers take advantage of the frequency-conversion
properties of the swept-tuned heterodyne receiver to make sig-
-nificant contributions to frequency-domain signal analysis.
The following are some of the measurements that can be made with
spectrum analyzers :
(1) Absolute and relative frequency.
(2) Absolute and relative amplitude.
(4) Distortion products.
(5) AM, FM & pulsed RF modulation.
(6) Stimulus response. ( biofeedback ? ed. )
(7) Electromagnetic compatibility (EMC).
These measurements are possible because spectrum analyzers have
the following characteristics :
(1) Broad frequency coverage from 5 Hz to 325 GHz.
(2) Wide amplitude range from -138 dBm to +30 dBm.
(3) Excellent sensitivity for low-signal detection.
(4) Excellent frequency stability.
(5) High resolution of frequency and amplitude.
These capabilities allow spectrum analyzers to provide frequency-
domain signal analysis for numerous applications, including the
manufacture and maintenance of microwave communication links, radar,
telecom equipment, CATV systems, and broadcast equipment ; EMI
diagnostic testing ; and signal surveillance.
( I can't believe they actually said that. Gee, I wonder if They're going
to classify test & measurement equipment next. )-:
Prices for these puppies run from @ $ 20,000 to @ $ 50,000. They are very
modularized, and, for the paranoids amongst you, these things are portable.
They are probably devilishly heavy, like most test equipment is, and look
a lot like an oscilloscope, when the cover is off.
For information about any Hewlett Packard product or service, or
for additional copies of this catalog, call the Customer Infor-
-mation Center (CIC) at 800-752-0900 between 6:00 am and 5:00 pm
What you want is their 'Test & Measurement Catalog'.
One small tip - if you're calling them up and want to get a catalog sent
to you, you want to make an effort to look like a valid customer. These
catalogs are large and expensive and they may be less inclined to pay for
what is probably a few dollars' shipping if you come across as a college
student ( with apologies to college students :-). Give an address if you
can, give yourself a title - R&D engineer is good - a department - R&D -
and, if they ask for a box or mail dept code, you can make one up or say
that you don't have one. ( Using different box numbers going to a same
address is a great way to see who's sharing their mailing list with whom
else, BTW ).
I'm not encouraging you to spoof these folks, merely noting that it is a
regrettable necessity. If you don't present yourself as a prospect, they
may blow you off, and if you give any hint that you don't represent some
sort of company, you are sure to be blown off, presumed to be a waste of
their time. ( Of course, this posting may lead to three or four analyzers,
$ 100-200 thousand worth of sales, but try to persuade a salescritter of
-- richard childers rchilder at us.oracle.com 1 415 506 2411
oracle data center -- unix systems & network administration
"If Life is a drama, then, surely, the hardest parts go to the most skillful."
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