Their fiber optic test and measurement devices include optical analyzers, reflectometers, tunable lasers, optical switches and customized systems for strain, temperature, shape and position sensing.
22.
But the sun's glare prevented them from clearly reading the screen of the NASA device, a photo-reflectometer, and the measurements were to be analyzed later.
23.
Other nondestructive testing methods are used, including embedding optical fibers coupled with optical time domain reflectometer testing of their state, testing with ultrasound, radiographic imaging, and infrared imaging.
24.
Ultrasonic time-domain reflectometers ( which send an ultrasonic pulse through a material and measure reflections from discontinuities ) could find flaws inside cast metal and stone objects, improving structural safety.
25.
Noise-domain reflectometers ( NDRs ) provide the benefit of locating wire faults without introducing an external signal because the NDR examines the existing signals on the line to identify wire faults.
26.
Two other instruments, a magnetometer and an electron reflectometer, will be used to determine whether the weak lunar magnetic fields are caused by surface phenomena or by the Moon's core.
27.
Once outside, the two men plan to float up to 50 feet from the airlock hatch along the Kvant 2 and core modules of Mir with a hand-held analytical instrument called a space portable reflectometer.
28.
Studies have shown that the limited wavelength range of a standard reflectometer ( 375-750 nm ) does not provide the sensitivity to accurately measure trench structures with small CD values ( less than 200 nm ).
29.
In simple wiring systems visual inspection can lead to finding the fault location, but in complex wiring systems, for instance aircraft wiring, devices such as a time-domain reflectometer are helpful, even on live wires.
30.
The electron reflectometer ( ER ) and magnetometer ( MAG ) were designed to collect information on the lunar magnetic fields . the Moon has no global magnetic field, but it does have weak localized magnetic fields at its surface.
