The device is a Deviser AE3100A Multi-Optical Fiber Tester, also known as an Optical Time Domain Reflectometer (OTDR). It's used for testing and maintaining fiber optic networks. Key features include:

7-inch LCD touchscreen for real-time data analysis.

Used for constructing, deploying, and maintaining FTTx networks.

Verifies access networks.

Measures fiber length, loss, connection quality, and finds faults.

Dynamic range of 28/30dB.

Stores >80,000 OTDR traces, exportable via USB or SD card.

Used for testing and maintenance of LAN and MAN based fiber networks.

Touchscreen control and modular platform.