The MaxTester 715B from EXFO Inc. is a Optical Time Domain Reflectometer (OTDR) with OTDR Measurement Time User-defined, Event Dead Zone 1 m, Attenuation Dead Zone 4 m, Optical Wavelength 1310 to 1625 nm, Dynamic Range 28 to 30 dB. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form, be it electronically, mechanically, or by any other means such as photocopying, recording or otherwise, without the prior writt eved to be accurate and reliable. MaxTester 715B -. MAX 715B – OTDR is optimized for the point-to-point testing and troubleshooting of FTTx architectures, and is ideal for testing short fibers (e., inside a CO environment or at FTTA/DAS network installations). If you want to buy additional options for your OTDR, please choose. MaxTester 715B last-mile OTDR POINT-TO-POINT (P2P) LINKS, LAST-MILE INSTALLATION AND TROUBLESHOOTING Fully featured, entry-level, dedicated OTDR with tablet-inspired design perfect for frontline singlemode fiber installers. The. Recommended replacement: EXFO MaxTester 700D series of optical time domain reflectometers New optical reflectometer MaxTester of the Canadian company EXFO (Exfo) compares favorably in all key areas: low price, excellent measurement performance, powerful processor, touch screen, durable and.