1. The reflectometer will be placed against the surface of radiators at three sites. 2. The equivalent device for optical fiber is an optical time-domain reflectometer . 3. In the former, the time domain reflectometer is used to isolate failing sites in the same. 4. You might also enjoy our articles about time-domain reflectometry and the time-domain reflectometer . 5. Such complex measurement systems include spectrum analyzers, transistor analyzers, and time domain reflectometers ( TDRs ). 6. The two spacewalkers also used a NASA photo-reflectometer to gauge the degree of aging of equipment in space. 7. :Use a reflectometer of course ! Preceding talk ) 01 : 47, 19 October 2007 ( UTC) 8. Compared to time domain reflectometer ( TDR ), FD sensors are cheaper to build and have a faster response time. 9. I found some info on Time Domain Reflectometers and have worked with those for another application but suspect that is expensive. 10. Time-domain reflectometers work by generating a signal and then sending that signal down the wireline and examining the reflected signal.