Willow Run (WR) Test Labs, Inc. 7117 Fieldcrest Dr., Brighton, Michigan 48116 USA Tel: (734) 252-9785, Fax: (734) 926-9785, e-mail: info@wrtest.com Attn.:Certication and Engineering Bureau, Innovation, Science and Economic Development Canada 3701 Carling Avenue, Bldg. 94 Ottawa, Ontario K2H 8S2 Re: Certication for Aptiv Services US, LLC WACM4 IC: 3432A-0074TR If necessary, we have enclosed application materials for certication of Aptiv Services US, LLC WACM4. It has been veried to comply with ISED RSS-216. Current Variants:
There is only a single variant of the EUT, employing a new micro-controller, as tested. History:
Original Grant: August, 2018; FCC ID: L2C0074TR; IC: 3432A-0074TR, Model: WACM2. Changes Made:
The current micro-controller (WCT1001A) is being replaced with a newer micro-controller (WCT1011B) due to a supply shortage. The devices are pin-to-pin compatible, but the new IC uses an internal 8 MHz clock source while the prior design was clocked externally from the host micro at 8 MHz. There is no change to the features, function, PCB layout, LF section, or mechanical design of the product. Action Taken:
The EUT employing the new micro-controller is fully evaluated for emissions and operating bandwidth and found to be identical to the original design with an observed frequency shift of 400 Hz and a minor change of measured eld levels, all within measurement uncertainty. The changes made qualify as a permissive change for IC (ref. IC RSP-100). If there are any questions regarding the application or testing performed, please contact us at the above address or call (734) 252-9785, or e-mail info@wrtest.com. Sincerely, Joseph D. Brunett Willow Run (WR) Test Labs, Inc. 11 Willow Run (WR) Test Labs, Inc. 7117 Fieldcrest Dr., Brighton, Michigan 48116 USA Tel: (734) 252-9785, Fax: (734) 926-9785, e-mail: info@wrtest.com Attn.:Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 Re: Certication for Aptiv Services US, LLC WACM4 FCC ID: L2C0074TR If necessary, we have enclosed application materials for certication of Aptiv Services US, LLC WACM4. It has been veried to comply with CFR Title 47, Part 18.305. Current Variants:
There is only a single variant of the EUT, employing a new micro-controller, as tested. History:
Original Grant: August, 2018; FCC ID: L2C0074TR; IC: 3432A-0074TR, Model: WACM2. Changes Made:
The current micro-controller (WCT1001A) is being replaced with a newer micro-controller (WCT1011B) due to a supply shortage. The devices are pin-to-pin compatible, but the new IC uses an internal 8 MHz clock source while the prior design was clocked externally from the host micro at 8 MHz. There is no change to the features, function, PCB layout, LF section, or mechanical design of the product. Action Taken:
The EUT employing the new micro-controller is fully evaluated for emissions and operating bandwidth and found to be identical to the original design with an observed frequency shift of 400 Hz and a minor change of measured eld levels, all within measurement uncertainty. The changes made qualify as a permissive change for FCC (ref. FCC, Part 2, 2.1043(a)(1)).If there are any questions regarding the application or testing performed, please contact us at the above address or call (734) 252-9785, or e-mail info@wrtest.com. Sincerely, Joseph D. Brunett Willow Run (WR) Test Labs, Inc. 10