Optical time domain reflectometer (OTDR) displays and controls encompass which of the following?

The correct answer encompasses a comprehensive set of features that an optical time domain reflectometer (OTDR) provides, making it a versatile tool in the field of fiber optic testing and analysis. The display and controls of an OTDR include a variety of task options, which are essential for configuring the device to suit specific measurement needs.

Specifically, the options for range allow users to adjust the distance over which the OTDR will measure, making it adaptable for different lengths of fiber. The pulse width is crucial because it determines the resolution and the ability to differentiate between closely spaced events along the fiber. Wavelength settings allow the OTDR to operate effectively with different types of fiber and light sources. Measuring mode configurations enable users to switch between different operational methods, such as single-ended or double-ended measurements.

This combination of features showcases the versatility and functionality of OTDRs, supporting a wide range of testing scenarios beyond basic measurements or advanced analysis alone. Thus, for someone using an OTDR, having access to a full suite of controls is essential for effective troubleshooting and analysis of fiber optic networks.