RE: Rack populating??-Rationalize it !!
You need to concern yourself with how may shelves to install in a rack only if you are responsible for the rack and its contents. If your responsibility is limited to the shelf, don't worry about the rack. Test rack with your shelf only - at top half. For rack concerns, I only populate racks at 50% load to test, if the shelves are of identical type. My experience has shown that if you are going to have any problems with emissions or emissions margins, you will see this at half rack with identical shelves. Anything beyond this would not be cost effective. However, if the shelves are of different type, you MUST test at full rack. Regards, Bandele Jetstream Communications, Inc. badep...@jetstream.com -Original Message- From: chasgra...@aol.com [mailto:chasgra...@aol.com] Sent: Tuesday, July 25, 2000 1:33 PM To: jestuc...@micron.com; wmf...@aol.com; emc-p...@ieee.org Cc: e...@emcinteg.com Subject: Re: Rack populating??-Rationalize it !! Methinks I must protest against the "keep adding until no more than xdB". As near as I can tell that was put in place by the FCC and others to minimize cable bundles - I cannot see how that applies to rack systems. The fundamental truth is that - no matter how one rationalizes it - if the full system is not tested then you flat have no idea what the real emissions profile is. Come on stop rationalizing - admit that there will be systems in the field that fail - and move on. This is a byproduct of volume vs test. The higher the volume the more rationalization takes place (witness the Class B procedures) until the emissions standards will be rendered irrelevant. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: 8591EM monitor output
The differences between PAL & NTSC go way beyond modulating RF. Even at
baseband, the monitors will be different & one may not work with the other's
signal. The Frame rate, or vertical interval is different - NTSC based on
North American AC at 60 Hz, as opposed to European 50 Hz, and the Horizontal
sync is different, as a result of being harmonically related to the vertical
sync. There is an issue (probably not with the signals in question) with the
color sub-carrier frequency offset from the video carrier, and the fact that
(because of the aforementioned) the video (baseband) bandwidth for PAL is
much wider than NTSC. A monitor may work with the other format if it is a
little forgiving (has some slop built into the sync'ing circuits). Give it a
shot with whatever is on hand, then go shopping if need be.
IMHO
_\\|//_
(' O-O ')
ooO-(_)-Ooo
Mark Carter
AM Communications, Inc.
car...@amcomm.com
Voice: 215-538-8710
Fax: 215-538-8779
-Original Message-
From: Tony J. O'Hara [mailto:tonyoh...@compuserve.com]
Sent: Tuesday, July 25, 2000 12:24 PM
To: Bailey, Jeff
Cc: 'emc-pstc'; 'brian.mcauli...@tellabs.com'
Subject: RE: 8591EM monitor output
A modulator for PAL is different than NTSC! PAL receivers use different
frequencies and I also think there are other differences!) . However, I
would assume that if you're in a locality that has PAL receivers then you
should be able to easily get a PAL modulator.
Remember also, that most "new" (last 5 years or so) receivers (at least US
NTSC ones) have a base-band video input (making them also a monitor!), then
you wouldn't need a RF modulator!
Tony
Colorado
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Re: Rack populating??-Rationalize it !!
Methinks I must protest against the "keep adding until no more than xdB". As near as I can tell that was put in place by the FCC and others to minimize cable bundles - I cannot see how that applies to rack systems. The fundamental truth is that - no matter how one rationalizes it - if the full system is not tested then you flat have no idea what the real emissions profile is. Come on stop rationalizing - admit that there will be systems in the field that fail - and move on. This is a byproduct of volume vs test. The higher the volume the more rationalization takes place (witness the Class B procedures) until the emissions standards will be rendered irrelevant. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Calling Jim Foppiano
Jim - Please email me chasgra...@ieee.org or call 303-666-1400 I need to chat with you. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Rack populating??
The statement is: Additional cards of a representative mix will be added until the emissions do not increase by less than 2 dB. > JOHN E. STUCKEY > EMC Engineer > > Micron Technology, Inc. > Integrated Products Group > Micron Architectures Lab > 8455 West Emerald St. > Boise, Idaho 83704 > PH: (208) 363-5313 > FX: (208) 363-5596 > jestuc...@micron.com > > -Original Message- From: wmf...@aol.com [mailto:wmf...@aol.com] Sent: Tuesday, July 25, 2000 05:22 To: emc-p...@ieee.org Subject: Rack populating?? I think I read in this forum that - in the context of emissions testing - it isn't necessary to fully populate a rack with, say, 4 units. Was the premise that emissions don't sum arithmetically, and the addition of the second, third units doesn't significantly effect the profile? (Obviously, if the rack is hermetic to RF, the addition of any number of units does not effect the profile.) But with allowances for some leakage... Does anyone a) remeber this thread, or b) have any opinions, or c) know of a reference WmFlanigan Ameritherm Inc Scottsville, NY --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: UL Recognized 24VDC PC Supply
Hi Gary - Even better...you can search on line at www.ul.com Brent > -Original Message- > From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf > Of Gary McInturff > Sent: Monday, July 24, 2000 1:34 PM > To: 'John Chambors'; 'emc-p...@ieee.org.' > Subject: RE: UL Recognized 24VDC PC Supply > > > > If you have a copy of the UL recognized component directory they > have a gazillion companies that have recognized supplies. I am looking at > the 2000 edition volume two (CCN QQGQ2)for power supplies used in > ITE and it > runs from page 845 to 1274. There are different sections for medical > equipment and other uses. Its a good place to start hunting. > Gary > > -Original Message- > From: John Chambors [mailto:john.chamb...@nematron.com] > Sent: Monday, July 24, 2000 9:38 AM > To: 'emc-p...@ieee.org.' > Subject: UL Recognized 24VDC PC Supply > > > > Does anyone know of a good source for a UL Recognized 24VDC PC > Supply? It's > not too difficult to find 24VDC input power supplies, but finding one that > is UL recognized is another matter. I'm trying to get a product certified > for use in hazardous locations. > > Thanks, > > John Chambors > Senior Engineer > > Nematron Corp. > Tel: (734) 214-2021 > Fax: (734) 994-8408 > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: 8591EM monitor output
A modulator for PAL is different than NTSC! PAL receivers use different frequencies and I also think there are other differences!) . However, I would assume that if you're in a locality that has PAL receivers then you should be able to easily get a PAL modulator. Remember also, that most "new" (last 5 years or so) receivers (at least US NTSC ones) have a base-band video input (making them also a monitor!), then you wouldn't need a RF modulator! Tony Colorado --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: 8591EM monitor output
Yes, they will spit out PAL format, but again it will be unmodulated so I suppose you will need baseband inputs or a modulator as I do. Jeff -Original Message- From: brian.mcauli...@tellabs.com [mailto:brian.mcauli...@tellabs.com] Sent: Tuesday, July 25, 2000 4:12 AM To: jim_bac...@mail.monarch.com; ral...@igs.net; sco...@world.std.com Cc: emc-p...@ieee.org Subject: RE: 8591EM monitor output Does anybody know if the 8590 series can spit out PAL format ? and if the same modulator would do the job ? Brian Tellabs -Original Message- From: ral...@igs.net [SMTP:ral...@igs.net] Sent: Tuesday, July 25, 2000 4:16 AM To: sco...@world.std.com; jim_bac...@mail.monarch.com Cc: emc-p...@ieee.org Subject:Re: 8591EM monitor output Jeff: Radio Shack sells an RF modulator that will do the job. If you feed it to a VCR you can also record the results as well as view it on a TV set. As mentioned, it produces NTSC compatible video on CH3 or 4. Price should be around $25. U.S. Ralph Cameron EMC Consulting and Suppression of Consumer Electronics (after sale). - Original Message - From: "Scott Lacey" To: "Jim Bacher" Cc: Sent: Monday, July 24, 2000 6:29 PM Subject: RE: 8591EM monitor output > > Jeff, > I think the piece of hardware you need is an RF Modulator. These output your > video on Channel 3 (sometimes switchable to channel 4). Should be available > for $25-$50 dollars. Try MCM Electronics (800 543-4330)if you can't find one > locally. The one I have is their P/N 33-1480 Audio/Video Modulator. It is > about 3" x 5" x 1", with an attached (120V) line cord, and a switch to > select CH3/CH4. > > Scott Lacey > > -Original Message- > From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf > Of Jim Bacher > Sent: Monday, July 24, 2000 3:42 PM > To: Bailey; Jeff; 'emc-pstc' > Subject: Fwd:8591EM monitor output > > > > forwarding for Jeff. > > Reply Separator > Subject:8591EM monitor output > Author: "Bailey; Jeff" > Date: 7/24/00 12:06 PM > > Hello all, > > Have any of you successfully hooked up a television to an HP8590 series EMC > analyzer? The monitor output does provide NTSC format, I am now assuming > that I need to provide a carrier for the monitor output to ride on in order > for the TV to see the NTSC signal and know what to do with it. Is there an > easier way to do this than to build my own modulator? > > Thanks, > > Jeff Bailey > Compliance Engineering > SST - A Division of Woodhead Canada > Phone: (519) 725 5136 ext. 363 > Fax: (519) 725 1515 > Email: jbai...@sstech.on.ca > Web: www.sstech.on.ca > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.o
Re: Rack populating??
In an experiment we performed using a 16 slot rack we determined that the noise floor level increased with the number of cards we added to the system. But we also observed that the spectral line associated with the primary clocks on eack card did not increas significantly as more cards were added. We finally ran the test with 4 cards as a good compromise. Derek. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: 8591EM monitor output
You can pick up a "not feeling well" or dead - older VCR in thrift shops or garage sales for 2-5 dollars. Most all of them had "packaged" modulators inside. A check of the modulator by connection to a TV and checking for sync is advisable. Remember to measure the voltage prior to ripping it out of the unit or proceed with caution as some of them I have encountered use odd voltages (3.8 to 11 volts). Good hunting //M. Taylor - (Dodging fires in Colorado) -Original Message- From: Ralph Cameron [mailto:ral...@igs.net] Sent: Monday, July 24, 2000 9:16 PM To: Scott Lacey; Jim Bacher Cc: emc-p...@ieee.org Subject: Re: 8591EM monitor output Jeff: Radio Shack sells an RF modulator that will do the job. If you feed it to a VCR you can also record the results as well as view it on a TV set. As mentioned, it produces NTSC compatible video on CH3 or 4. Price should be around $25. U.S. Ralph Cameron EMC Consulting and Suppression of Consumer Electronics (after sale). - Original Message - From: "Scott Lacey" To: "Jim Bacher" Cc: Sent: Monday, July 24, 2000 6:29 PM Subject: RE: 8591EM monitor output > > Jeff, > I think the piece of hardware you need is an RF Modulator. These output your > video on Channel 3 (sometimes switchable to channel 4). Should be available > for $25-$50 dollars. Try MCM Electronics (800 543-4330)if you can't find one > locally. The one I have is their P/N 33-1480 Audio/Video Modulator. It is > about 3" x 5" x 1", with an attached (120V) line cord, and a switch to > select CH3/CH4. > > Scott Lacey > > -Original Message- > From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf > Of Jim Bacher > Sent: Monday, July 24, 2000 3:42 PM > To: Bailey; Jeff; 'emc-pstc' > Subject: Fwd:8591EM monitor output > > > > forwarding for Jeff. > > Reply Separator > Subject:8591EM monitor output > Author: "Bailey; Jeff" > Date: 7/24/00 12:06 PM > > Hello all, > > Have any of you successfully hooked up a television to an HP8590 series EMC > analyzer? The monitor output does provide NTSC format, I am now assuming > that I need to provide a carrier for the monitor output to ride on in order > for the TV to see the NTSC signal and know what to do with it. Is there an > easier way to do this than to build my own modulator? > > Thanks, > > Jeff Bailey > Compliance Engineering > SST - A Division of Woodhead Canada > Phone: (519) 725 5136 ext. 363 > Fax: (519) 725 1515 > Email: jbai...@sstech.on.ca > Web: www.sstech.on.ca > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
FIRE ENCLOSURES ACCORDING TO IEC 60065
Dear Sirs, We have a doubt about the subclause 20.2 ' Fire enclosure' of the standard IEC 60065:1998. The clause 20.2 has three additional subclauses. The subclause 20.2.1. is applicable only to equipment with open circuit voltages exceeding 4 kV (peak). The subclause 20.2.2. is about requirements for internal fire enclosures and here we have a problem: Must all the equipment have a fire enclosure or only those which contain circuits with voltages exceeding 4 kV? Best regards, --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Rack populating??
I think I read in this forum that - in the context of emissions testing - it isn't necessary to fully populate a rack with, say, 4 units. Was the premise that emissions don't sum arithmetically, and the addition of the second, third units doesn't significantly effect the profile? (Obviously, if the rack is hermetic to RF, the addition of any number of units does not effect the profile.) But with allowances for some leakage... Does anyone a) remeber this thread, or b) have any opinions, or c) know of a reference WmFlanigan Ameritherm Inc Scottsville, NY --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: 8591EM monitor output
Does anybody know if the 8590 series can spit out PAL format ? and if the same modulator would do the job ? Brian Tellabs -Original Message- From: ral...@igs.net [SMTP:ral...@igs.net] Sent: Tuesday, July 25, 2000 4:16 AM To: sco...@world.std.com; jim_bac...@mail.monarch.com Cc: emc-p...@ieee.org Subject:Re: 8591EM monitor output Jeff: Radio Shack sells an RF modulator that will do the job. If you feed it to a VCR you can also record the results as well as view it on a TV set. As mentioned, it produces NTSC compatible video on CH3 or 4. Price should be around $25. U.S. Ralph Cameron EMC Consulting and Suppression of Consumer Electronics (after sale). - Original Message - From: "Scott Lacey" To: "Jim Bacher" Cc: Sent: Monday, July 24, 2000 6:29 PM Subject: RE: 8591EM monitor output > > Jeff, > I think the piece of hardware you need is an RF Modulator. These output your > video on Channel 3 (sometimes switchable to channel 4). Should be available > for $25-$50 dollars. Try MCM Electronics (800 543-4330)if you can't find one > locally. The one I have is their P/N 33-1480 Audio/Video Modulator. It is > about 3" x 5" x 1", with an attached (120V) line cord, and a switch to > select CH3/CH4. > > Scott Lacey > > -Original Message- > From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf > Of Jim Bacher > Sent: Monday, July 24, 2000 3:42 PM > To: Bailey; Jeff; 'emc-pstc' > Subject: Fwd:8591EM monitor output > > > > forwarding for Jeff. > > Reply Separator > Subject:8591EM monitor output > Author: "Bailey; Jeff" > Date: 7/24/00 12:06 PM > > Hello all, > > Have any of you successfully hooked up a television to an HP8590 series EMC > analyzer? The monitor output does provide NTSC format, I am now assuming > that I need to provide a carrier for the monitor output to ride on in order > for the TV to see the NTSC signal and know what to do with it. Is there an > easier way to do this than to build my own modulator? > > Thanks, > > Jeff Bailey > Compliance Engineering > SST - A Division of Woodhead Canada > Phone: (519) 725 5136 ext. 363 > Fax: (519) 725 1515 > Email: jbai...@sstech.on.ca > Web: www.sstech.on.ca > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: 8591EM monitor output
Jeff: Radio Shack sells an RF modulator that will do the job. If you feed it to a VCR you can also record the results as well as view it on a TV set. As mentioned, it produces NTSC compatible video on CH3 or 4. Price should be around $25. U.S. Ralph Cameron EMC Consulting and Suppression of Consumer Electronics (after sale). - Original Message - From: "Scott Lacey" To: "Jim Bacher" Cc: Sent: Monday, July 24, 2000 6:29 PM Subject: RE: 8591EM monitor output > > Jeff, > I think the piece of hardware you need is an RF Modulator. These output your > video on Channel 3 (sometimes switchable to channel 4). Should be available > for $25-$50 dollars. Try MCM Electronics (800 543-4330)if you can't find one > locally. The one I have is their P/N 33-1480 Audio/Video Modulator. It is > about 3" x 5" x 1", with an attached (120V) line cord, and a switch to > select CH3/CH4. > > Scott Lacey > > -Original Message- > From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf > Of Jim Bacher > Sent: Monday, July 24, 2000 3:42 PM > To: Bailey; Jeff; 'emc-pstc' > Subject: Fwd:8591EM monitor output > > > > forwarding for Jeff. > > Reply Separator > Subject:8591EM monitor output > Author: "Bailey; Jeff" > Date: 7/24/00 12:06 PM > > Hello all, > > Have any of you successfully hooked up a television to an HP8590 series EMC > analyzer? The monitor output does provide NTSC format, I am now assuming > that I need to provide a carrier for the monitor output to ride on in order > for the TV to see the NTSC signal and know what to do with it. Is there an > easier way to do this than to build my own modulator? > > Thanks, > > Jeff Bailey > Compliance Engineering > SST - A Division of Woodhead Canada > Phone: (519) 725 5136 ext. 363 > Fax: (519) 725 1515 > Email: jbai...@sstech.on.ca > Web: www.sstech.on.ca > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: UL Recognized 24VDC PC Supply
Hello: QQPX2 would be the UL category you should check. ITE or other type power supplies will not do for a hazardous location. There are many things one needs to consider when dealing with Explosive Atmospheres not considered in ITE or other safety standards. Listed under QQPX2 are: Diversified Technical Services 1400 Distributors Row Harahan LA 70123 Sola/Hevi-Duty Unit of General Signal 1101 S Wells Street Lake Geneva W1 53147 Vicor Corp 25 Frontage Road Andover MA 01810 Hope this helps, Mel Pedersen Homolgations Engineer Ph: (605) 882-8535 mailto:mpeder...@midcom-inc.com -Original Message- From: Gary McInturff [mailto:gary.mcintu...@worldwidepackets.com] Sent: Monday, July 24, 2000 3:34 PM To: 'John Chambors'; 'emc-p...@ieee.org.' Subject: RE: UL Recognized 24VDC PC Supply If you have a copy of the UL recognized component directory they have a gazillion companies that have recognized supplies. I am looking at the 2000 edition volume two (CCN QQGQ2)for power supplies used in ITE and it runs from page 845 to 1274. There are different sections for medical equipment and other uses. Its a good place to start hunting. Gary -Original Message- From: John Chambors [mailto:john.chamb...@nematron.com] Sent: Monday, July 24, 2000 9:38 AM To: 'emc-p...@ieee.org.' Subject: UL Recognized 24VDC PC Supply Does anyone know of a good source for a UL Recognized 24VDC PC Supply? It's not too difficult to find 24VDC input power supplies, but finding one that is UL recognized is another matter. I'm trying to get a product certified for use in hazardous locations. Thanks, John Chambors Senior Engineer Nematron Corp. Tel: (734) 214-2021 Fax: (734) 994-8408 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
