'Carrier detect' presentation slideshows

Interfacing The Serial/RS-232 Port

Interfacing The Serial/RS-232 Port . Hardware Serial Port Registers Programming. Interfacing the Serial / RS232 Port. The Serial Port is harder to interface than the Parallel Port. When receiving data and change in status from I/O Ports, two methods are available 1 . POLLING

727 views • 43 slides

Introduction to Repeaters

Introduction to Repeaters. Ron Milione, Ph.D. CETma W2TAP w2tap@arrl.org ron.p.milione.ctr@us.army.mil. What is a repeater?. A repeater is a device that performs 3 basic functions: It receives and demodulates an RF signal. It regenerates the audio information.

457 views • 34 slides

Fundamentals of Repeaters

354 views • 34 slides

2/26: Wide World of Modems

2/26: Wide World of Modems. 13. 1. Roll call. Video: modem Lecture: step-by-step. 25. 14. 1. The DTR signal. 13. 1. The PC sends a signal to the modem on line 20. This DTR ( Data Terminal Ready ) signal tells the modem that the PC is ready to go. 25. 20. 14. 1A. The DSR signal.

273 views • 14 slides