I'm trying to track down the data on a SO-8 protection diode array and I
don't recognise the package marking. It's a circle made up of four stars
at 90 degree angles to each other. I _think_ it might be the now obsolete
General Semiconductor symbol. Can anybody point me to a reference?
I totally agree. Note that my response is bandwidth independent. If the
measurement bandwidth is an X dB bandwidth, then a signal exactly half a
measurement bandwidth from a tuned frequency will be measured to be X dB
down from the value returned if it were precisely tuned in. And this bounds
I read in !emc-pstc that Price, Ed ed.pr...@cubic.com wrote (in
b78135310217d511907c0090273f5190d0b...@curly.ds.cubic.com) about
'Stepping receiver, step sizes.', on Fri, 7 Dec 2001:
BTW, my 8571A system uses an 8566B SA, and that analyzer actually uses an
analog swept oscillator. But under
Ken:
Did you do your test by first setting the receiver to the 2950 MHz signal,
and then setting up a symmetrical scan from that reference?
For example, if I used a spectrum analyzer to look at 2950 MHz, by setting
the CENTER FREQUENCY, and then selected a FREQUENCY SPAN of 4000 MHz with a
Hello Gary and all,
The point is do an experiment with your Stepping receiver.
Ken
-Original Message-
From: Pettit, Ghery [mailto:ghery.pet...@intel.com]
Sent: Friday, December 07, 2001 8:36 AM
To: 'HALL,KEN (HP-Roseville,ex1)'; 'John Woodgate';
emc-p...@majordomo.ieee.org
Subject:
Ken,
A spectrum analyzer sweeps through a range of frequencies. The resolution
of the display merely impacts the accuracy of the frequency determination
for a signal when digitized and sent to a computer over the bus. Each point
on the display simply shows the highest level obtained in the
Hello all,
We typically measure in 500 MHz spans, our spectrum analyzer has 400 bits so
1.25 MHz/bit. Concerned that we could miss an emission I perfromed the below
experiment, try it:
Injected a 2950 MHz signal into EMI Receiver, set for 1MHz RBW, and measured
it using diffrent Spans
3 000
John,
Try this:
http://europa.eu.int/eur-lex/en/com/dat/2000/en_500PC0347_01.html
John Radomski
John Juhasz
Chet,
The back of the UL recognized component directory yellowbooks lists company
trademarks.
Paul J Smith, Teradyne, Boston
Summers, Chet csumm...@pelco.com@majordomo.ieee.org on 12/06/2001
04:21:57 PM
Please respond to Summers, Chet csumm...@pelco.com
Sent by:
Chet, et al;
In the back of Volume 3 of the UL Recognized Component 'yellow books' there
is a large 'List of Company Identifications' section that has logos for
hundreds of companies. They are listed in alphabetic order (somewhat).
Raychem, Bourns and another vendor make these 'PTC' resettable
John Friends
For the draft directives, see
http://europa.eu.int/eur-lex/en/com/dat/2000/en_500PC0347_01.html
Can't help with the date.
Regards
John Allen
-Original Message-
From: John Juhasz [mailto:jjuh...@fiberoptions.com]
Sent: 06 December 2001 21:39
To: 'emc-p...@ieee.org'
The Elusive Glitch - Part 3
This month on http://www.dsmith.org, the Technical Tidbit is the final
Part 3 of the Elusive Glitch story. The first two articles in October
and November talked about how ESD and other impulsive events can disrupt
measurements on digital circuits. Also covered were
Chet,
I believe this is Raychem:
www.raychem.com
This is likely one of their resettable Polyswitches,
which are Positive Temperature Coeffient (PTC) devices.
Also, IC Master has an index of manufacturer logos.
www.icmaster.com
Good luck with your submittal.
Regards,
Dan
Hello Luiz,
for Europe and also for the most Asien countries there is no general length for
the power cord. Usually you have in the standards itself certain requirements.
In the EN 60335 they requiere normally a length of 2 m, but for some appliances
such as water kettles max. 0,5 m, which is
Check out http://www.indiansources.com/vvcl.htm and see if it's their symbol.
Cortland Richmond
(Not my employer's opinion; my own!)
Summers, Chet wrote:
Hello Group, a colleague has asked me to identify the mfg marking stamped on
a metal surface mount fuse. Looks like a small V with
15 matches
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