RE: FCC Part 68 new Surge requirements

1997-08-28 Thread Mel Pedersen 
Thanks Larry:

I will pass this along to emc-pstc also.  The confusion as to what the new type 
B surge requirements are may lie a disparity in what was presented at the last 
FCC/TIA conference.  After reviewing my notes, the rough draft version of the 
new part 68 requirements specified the new surge as being 9x720, but the 
conference notes said 10x700.  They probably corrected it but maybe I missed 
the boat.

I suppose all one needs to do is look in the CS-03 requirements, the FCC part 
68 should be coming out shortly anyway.  

Thank you!!


Mel Pedersen  Midcom, Inc.
Homologations Engineer Phone:  (605) 882-8535
mpeder...@midcom.anza.com  Fax:  (605) 886-6752

--
From:   stillin...@aol.com[SMTP:stillin...@aol.com]
Sent:   Wednesday, August 27, 1997 4:19 PM
To: t...@world.std.com
Subject:Re: FCC Part 68 new Surge requirements

Hi Treg, Mel, etc,

 I believe the new "B" type surge applicable only in the US are the
following:

 1000V, 25A 10x700 uS (Metallic Tip to Ring)
 1500V, 37.5A 10x700 uS (Longitudinal Tip/Ring to Ground)

 Two repetitions in each polarity and the device must continue to operate
after the surges.

 These are the same rise/fall time constants but I do not believe they
follow the voltage/current requirements of European Specification ETS 300 046
-1/-2.

 These new surges are already applicable to ISDN and PSDS equipment,
because of Public Notice #70049 which came out on August 15, 1996 and was
effective November 13, 1996.  I haven't heard of TSB-31(b) being released yet
as it is still in review at the FCC (Bill please correct me if I am wrong),
therefore the rest of the telephone interfaces covered under Part 68 (Loop
Start, Ground Start, DID, E&M, T1, etc.) are not currently required to meet
the type B surge.

Larry Stillings
Compliance Worldwide, Inc.
P. O. Box 233
Canterbury, NH 03224
Phone/Fax 603-783-4775

<>

RE: FCC Part 68 new Surge requirements

1997-08-26 Thread Mel Pedersen 
Hello SGour and fellow emc-pstc colleagues:

I understand that the FCC has finally adopted the long awaited harmonized 
FCC/CS-03 requirements.  They come into effect 90 days after the publication of 
the new requirements.  I just don't know when the 90 days begins.  The new 
surge requirements take effect at that time.  I thought that the new surge test 
was the same as the ITU K.21 surge, 10x700us.

Any comments from TREG?

Mel Pedersen  Midcom, Inc.
Homologations Engineer Phone:  (605) 882-8535
mpeder...@midcom.anza.com  Fax:  (605) 886-6752

--
From:   SGour[SMTP:sg...@brother.com]
Sent:   Tuesday, August 26, 1997 4:52 AM
To: emc-p...@majordomo.ieee.org
Subject:        FCC Part 68 new Surge requirements

  Hello group

Is anyone aware when the new part FCC pt 68 (68.302)surge (9x720us) requirements
actually coming into effect.
Has anybody bought the equipment--any recommendations.

Is this requirement similar to a EU Surge requirement? Can one tester cover 
both??

Thanks in advance for the suggestions/comments.

sg...@brother.com


  
  RCIC - http://www.rcic.com
  Regulatory Compliance Information Center

FCC Part 68 new Surge requirements

1997-08-26 Thread SGour 
  Hello group

Is anyone aware when the new part FCC pt 68 (68.302)surge (9x720us) requirements
actually coming into effect.
Has anybody bought the equipment--any recommendations.

Is this requirement similar to a EU Surge requirement? Can one tester cover 
both??

Thanks in advance for the suggestions/comments.

sg...@brother.com


  
  RCIC - http://www.rcic.com
  Regulatory Compliance Information Center