of Ethernet Physical Layer (PHY) transceivers, originally developed by and now maintained by Microchip Technology
Section E — Reliability, testing, and compliance (10 points) 13. (5 pts) List five reliability or compliance tests (e.g., ESD, thermal cycling, humidity, S-parameter channel test, EMI) that the datasheet might reference, and give one acceptance criterion for each. 14. (5 pts) Describe how to interpret an eye diagram and bit error rate (BER) spec in the datasheet when qualifying a 1000BASE-T PHY. ksz80 ob s4lv02 datasheet
This board is the first suspect when a TV has sound but no picture, or shows vertical/horizontal lines and distorted colors. Technical Specifications and Connectivity (5 pts) Describe how to interpret an eye
Surface-mount LEDs (on some revisions) to indicate power-good status Troubleshooting Common Faults If these are missing, the screen will likely
Using a multimeter, technicians check for VGH (typically +20V to +30V) and VGL (typically -5V to -10V). If these are missing, the screen will likely remain blank or display a slowly fading image. Where to Source Parts