Jack, Type A surge generator: output 800v peak, having 10us max front time to crest and 560us minimum decay time to half crest; with peak current capability of 100A minimum, and the ability to generate these pulses in both positive and negative polarity.
Type A surge generator: output 1500v peak, having 10us max front time to crest and 160us minimum decay time to half crest; with peak current capability of 200A minimum, and the ability to generate these pulses in both positive and negative polarity. Type A surge generator: output 2500v peak, having 2us max front time to crest and 10us minimum decay time to half crest; with peak current capability of 1000A minimum, and the ability to generate these pulses in both positive and negative polarity; means for preventing the surge voltage from entering the feeding ac power network. Type B surge generator: output 1000V minimum peak open circuit voltage at the output port,with a 9us front time,+/-30%, and 720us decay time, +/-20%, 25A minimum peak short circuit current at each output port simultaneously, with 5us front time, +/-30%, and 320 us decay time, +/-20%. The generator must be able to generate these pulses in both positive and negative polarity. Type B surge generator: output 1500V minimum peak open circuit voltage at the output port,with a 9us front time,+/-30%, and 720us decay time, +/-20%, 37.5A minimum peak short circuit current at each output port simultaneously, with 5us front time, +/-30%, and 320 us decay time, +/-20%. The generator must be able to generate these pulses in both positive and negative polarity. Type B surge was recently introduced by FCC, and is effective from April 20, 1998. Hope this will help. Christopher Saleem At 02:46 PM 4/17/98 -0400, you wrote: >What is the difference between type A and Type B surges? > >Thanks, > >Jack Murphy >Netaccess, Inc. > >-----Original Message----- >From: Chris Saleem [SMTP:[email protected]] >Sent: Friday, April 17, 1998 11:26 AM >To: [email protected] >Subject: Re: FCC 68 surge for Bri > > > >Karl, > >The following type of surge is applicable for BRI. FCC uses three types of classification for ISDN Bri equipment. > >For DE and DD type interface >Line Surge type A (metallic and Longitudinal) >Line Surge type B (metallic and Longitudinal) >Power line surge if applicable > > >For XD interface( Behind NT1) >Power line surge if applicable > > > > >>From: [email protected] >>Subject: Part 68 surge tests for ISDN BRI Equipment >> >> >>Hello Treggers, >> >>Can anybody advice me if the FCC Part 68 surge tests are applicable for >>ISDN Basic Rate devices. It seems to me that the Basic Rate Interface >>is safely separated from exposed circuits by the network terminator. >> >>Thank you in advance, >>Karl >> >>___________________________________________________________ >> >> Karl-Heinz Doerfler Group Manager Compliance >> ELSA AG >> Sonnenweg 11 Phone: +49-(0)241-606-4656 >> 52070 Aachen Fax: +49-(0)241-606-1199 >> Germany EMail: [email protected] >>____________________________________________________________ >> >> >> >> >--------------------------------------------------------------- > Christopher Saleem (Senior Compl. Engr.) | | > E-mail: [email protected] | | > Phone : (408) 527-8736 ||| ||| > Fax : (408) 526-8348 ||||| ||||| > 210 West Tasman Drive, MS SJ-F/1 ..:|||||||:...:|||||||:.. > San Jose, CA 95134-1706 (U.S.A.) c i s c o S y s t e m s >----------------------------------------------------------------- >Attachment Converted: "C:\PROGRAM FILES\EUDORA\Attach\RE FCC 68 surge for Bri" >
