FCC contact for railroad equipment

Could someone provide me with a contact within the FCC (or any other authorized agencies) that deals with FCC rules applicable to railroad devices (locomotive and wayside)? Thanks in advance, Susan H. Beard 321-435-7762 Fax 321-435-7957 susan.be...@gehh.ge.com

definition of type certification

Forgive me if this is a naive question (given my background of compliance to MIL-STDs), but I keep hearing references to type certification which seems to be relative to generic FCC, ACA, etc. type compliance testing of comm devices. I am more familiar with references to specific FCC Part 15

info on AS4295

Is the only way to obtain a copy of the Australian standard AS4295 to buy it from the ACA? Could anyone provide me with a synopsis of the requirement for radio receiver sensitivity of -113dBm for a SINAD of 12dB? Susan H. Beard 321-435-7762 Fax 321-435-7957 susan.be...@gehh.ge.com

232 vs. 422 for CM rejection and noise immunity

I am in need of some outside advice regarding 232 and 422 interfaces. Could someone please confirm which interface supports a difference of 50' between devices that could have greater than 100 volts potential difference between the grounds? Thanks in advance. Susan H. Beard 321-435-7762

STANAG 4145

Can someone point me to info on STANAG 4145? Susan H. Beard 321-435-7762 Fax 321-435-7957 susan.be...@gehh.ge.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription,

EMI ruggedization of USB ports

Can anyone point me to guidelines for ruggedizing USB interfaces for harsh EMI environments (100 V/m, IEC 1000-4-4 category 3, etc.)? Thanks, Susan H. Beard 321-435-7762 Fax 321-435-7957 susan.be...@gehh.ge.com --- This message is from the IEEE EMC

separation to meet 2000 VDC hipot

I recall many messages regarding trace separation, etc. to meet certain voltage isolation requirements; however, none of those specs are applicable to my products. Is there a general guideline for separating traces to meet isolation requirements and survive a 2000 VDC (input to chassis) hi-pot

interference to Comm devices due to overhead catenaries

Could anyone provide any information relative to overhead catenary noise and its affects on locomotive roof top comm systems (e.g., GPS)? Susan Beard --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion

IEC 571-1

Does anyone have info on IEC 571-1/90? Our customer is refering to this document as the EMI transient specification most applicable to our railway program. I'd like to learn more as to why it is applicable and also how this spec compares to the one to which we've already tested (IEC 801-5).

[no subject]

Can someone tell where I can get a copy of EN 50126? Thanks, Susan Beard - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to

connectors that meet hipot requirements

Anyone know of any connectors with 0.1 spacings that survive a 2000 volt rms hipot requirement? Susan Beard - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the

transient event recorder

Does anyone know of a device that could be connected to an interface (e.g., LON) that would record transient type events? Susan Beard - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line:

FCC Form 731

Is there a web site for the FCC Application for Equipment Authorization, Form 731, where the application can electronically be completed and also a way to file the application electronically? I found the form on the FCC's web site, but it apparently allows a copy but no data to be entered.

equation for standard gain horns

Can someone point me to the equation for calculating the gain of a standard gain horn antenna based on the physical measurements of the aperture? Thanks, Susan Beard - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org

EN50155

I am looking for someone familiar with EN50155 to clarify the direct/indirect transient (IEC801-5) test methods. Thanks, Susan Beard - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe