A full-body harness used with a personal fall arrest system shall produce a maximum arrest force of not more than 1800 lbs., per ANSI Z359.1-2007 E3.1.2. Q. What will a shock-absorbing lanyard limit fall-arrest forces to? A. Shock absorbing lanyards shall limit fall-arrest forces to 900 lbs. or less, per ANSI Z359.1-2007 E3.2.4.7. Q. Computer Monitors - a test PC is useful as a video source. Of course, it will need to support whatever scan rates and video types the monitor is designed to accept. Software programs are available to display purity, convergence, focus, color, and other test patterns. Or create your own test patterns using a program like Windows Paint.