The EIA standard does not define a "default" or "standard" baud rate, other
than the max rate allowed according to CCITT recommendations for PSTN modems.
If you are refering to PC UARTs, note that there are some common baud rate
divisors.
>From the on-line dict of computing:
"ITU works closely w
Dave,
Do you mean modeling PCB power planes for EMC purposes, or for any purpose?
For power-distribution analysis, modeling power planes with SPICE is one of
the common solutions.
Regards,
Istvan Novak
SUN Microsystems
- Original Message -
From: drcuthb...@micron.com
To: emc-p..
Dave,
Could you send me privately or post a link to the AntenneX Discussion Group?
Thanks,
Ernest Rayman
584 Clairmont Cir.
Apt 3
Decatur, Ga 30033
404-634-4494
ernestray...@hotmail.com
Thanks to the two who responded. I found the SUN reference earlier and it is
good. This confirms my alternate method. I get the same results with a much
smaller model but its has limitations. The drawback is I can only exactly
model a circular PCB with the signal source at the center. It is interes
Hi All,
I am looking at moving out of California shortly. By doing this I will be
looking for work. I have been doing safety for the past 4 yrs. I have been
doing EMC for the past 5 yrs. All of this has been using the various ITE
standards. I have other experience in electronics and communic
Is anyone else trying to model PCB power planes with SPICE?
Dave Cuthbert
Micron Technology
Hello Martin,
Although I would agree there are no requirements for the Standards to be
mentioned in the user manual, in my opinion I feel it crucial to identify
them here as it gives the user the opportunity to define the operating
environment and proper utilization.
Even if most users may not b
To all that may know,
I know this may be a bit off topic, but I am in a search for a reference
document/standard/specification that describes and/or defines the standard
baud rates found in
RS-232, RS-422 and RS-485 interfaces. If anyone does know of such a reference,
please identify it to
me.
T
Hi Group,
Very true remarks on PLC or BPL H-field measurements. We in Europe did a lot
of them. In Germany NB30 Decree by RegTP (mag. field strength limits taken
at 3m, 3 axis orientations, with 9 kHz BW) and using a 60cm magnetic loop
(CISPR 16) mostly from R&S sets the rules which seem to get n
Hello Group,
I have a client who wondering if there is any standard color coding scheme
for the -48VDC power feeds to telecom equipment located in a central office.
I have checked GR-78 which references GR-347. The client has GR-347
and has not found any information on this topic. Are we lookin
From: drcuthbert
Sent: Thursday, March 25, 2004 1:38 PM
To: 'Ken Javor'; Barry Rowland; EMC-PSTC
Subject: RE: Shielded Loop Antenna for HF
You will need something larger than these sensors. At 3MHz a loop with
an area of 0.1 sq. meter will output 0.25uV (-12 dBuV) when placed in a
30 uV/m fi
Note that the 0.1 sq. meter loop will barely work well enough at 3 MHz.
The system noise floor is 18 dBuV/m while you need to measure below 30
dBuV/m. Not much head room. The loop is terminated into 50 ohms. A
larger loop will not qualify as an electrically short loop at 30 MHz.
Dave Cuthbert
You will need something larger than these sensors. At 3MHz a loop with
an area of 0.1 sq. meter will output 0.25uV (-12 dBuV) when placed in a
30 uV/m field. With a 3dB noise figure preamp the spectrum analyzer
noise floor is -24 dBuV with the RBW set to 10 kHz. So, a 0.1 sq. meter
loop will allow
Jack,
Are you on the AntenneX discussion list? We have been analyzing BLP and
have decided that the FCC measurement method is hopelessly flawed. The
FCC method calls for a vertically oriented loop at a 1 meter height.
But, the major radiation (from sims) shows it being horizontally
polarized and
Can anyone out there help me with info on European lead free solder
requirements? Thanks in advance.
Bill Wilson
Hello Jack,
We use shielded loop antennas for measuring inductive loop systems operating
between 40 kHz and 8 MHz. We have Electro-Metrics and ETS-Lindgren loops.
In this frequency range, we have found it to be important to have a
measurement site free of metallic objects, i.e., no ground plane,
I would try to connect a capacitor from + to the chassis and from - to the
chassis to avoid the requirement for shielded cable. Is there a way to make
this connection? A 0.1 uF capacitor with short lead is a start. If the total
lead+cap length is 1/2 cm the inductance will be about 10 nH. Above 5 M
Roger:
EM Test also manufactures a generator, CSS500M/32, that will perform the IEC
61000-4-5 8/20 pulse up to 32,000 amps.
Regards,
Rodger
_
From: Roger Hsu [mailto:roger...@astec-asia.com]
Sent: Tuesday, March 23, 2004 11:02 PM
To: emc-p...@ieee.org; owner-emc-p...@majordom
>-Original Message-
>From: Iain Summers [mailto:iain.summ...@blueyonder.co.uk]
>Sent: Wednesday, March 24, 2004 4:27 PM
>To: EMC-PSTC
>Subject: Re: Shielded Loop Antenna for HF
>
>
>
>Jacob, I am also measuring BPL in the UK. We have an automatic
>Schaffner
>loop but it is too noisy to
This is a multi-part message in MIME format.
I ran across a report which is likely to be of interest to some in our
group.
NASA has developed a powder fire extinguishing agent consisting of
microencapsulated water. It is dry and halogen free, releasing water for
cooling and oxygen displacement onl
My estimation is that the FCC loops were built to sense stronger fields than
what the original poster had in mind, and may not have sufficient
sensitivity at HF.
on 3/25/04 1:46 AM, Barry Rowland at bfr...@direct.ca wrote:
>
> Fischer Custom Communications also have such products, which Agilen
>From : Calient Networks is Hiring
Sent : Wednesday, March 24, 2004 6:40 PM
Subject : Regulatory Electrical Engineer Needed
| | | Inbox
Calient Networks is a developer of intelligent,
all-photonic switching systems and software,
that allows service providers to scale their net
kbalasubraman...@scmmicro.co.in wrote (in ) about 'What is
wrong in my 3 meters FAC measurement', on Thu, 25 Mar 2004:
>You wrote "The bottom line is the common mode RF on the power leads.
>This needs to be fixed. Bypassing the + and - directly to the chassis at
>the chassis wall may help."
>
Fischer Custom Communications also have such products, which Agilent
was including in their EMC pre-compliance test sets.
Here's the page:
http://www.fischercc.com/instrumentation/product_sensors.shtml
Barry Rowland
Vancouver BC
On Wednesday, March 24, 2004, at 04:27 PM, Iain Summers wrote:
Check out:
http://www.ets-lindgren.com/productpage.cfm?model=6502&producttype=Antennas
and
http://www.electro-metrics.com/antennas-emi.html#Loop%20Antennas
for several models to choose from.
on 3/24/04 5:39 PM, Jacob Schanker at schan...@frontiernet.net wrote:
>
> Fellow Groupees: :)
>
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