Terahertz Technologies Inc.Terahertz Technologies Inc.
(888) U.S.-OTDRS

The TTI FTE7500A-Quad OTDR is a complete tester with:

SM and MM wavelengths for your hybrid fiber networks ● Power Meter ● Stable CW Light Source ● Visible Fault Locator ● Auto Pass/Fail/Center Fiber Inspection System.

The FTE-7500A quad wavelength Optical Time Domain Reflectometer performs a wide variety of functions as well as being a fast, simple to use OTDR. Its instant on feature, ease of use, rugged housing and affordable price make this the best day to day unit on the market. This unit includes a integrated Video Scope, Visual Fault Locator, AutoTest /AutoWave Power Meter and CW Light Source.  

The FTE-7500A-QUAD has a 36/34/26/27dB dynamic range and a 1 meter dead zone. These specifications, and a full set or operational modes, such as; one button fault finder, construction, real time and full manual mode, make it perfect for testing and troubleshooting requirements, in LAN, Access and premise networks. 

The FTE-7500A OTDR also includes a Visual Fault Locator, AutoTest/AutoWave Power Meter, Stable/ CW Light Source and a Video Inspection Scope (probe sold separately).

This unit includes all the features expected in today’s hand held OTDR; bright 4” color display, immediate start up, USB flash, internal storage, event table with pass/fail threshold setting and onboard context sensitive help which keeps the learning curve as short as possible.

The FTE-7500A weighs less then 2.0 pounds and with a hardened water resistant enclosure, this OTDR is great for all working conditions. The rubber boot with bail adds protection and provides the ideal angle for viewing the display while operating on a work bench. 

Features include:

Full Auto, Construction and Expert Modes, Free Reporting Software and Onboard and Flash Storage Capability


36 dB Dynamic Range
Instant On
1 Meter Dead Zone
Full Auto, Construction and Expert Modes
Event Table with Pass/Fail Feature
Trace Overlay Capability   
Onboard Memory for ~500 traces
Auto Wavelength Power Meter
Stable Light Source
Built in Auto Center/Pass/Fail Video Scope
Visible Fault Locator
USB Flash Drive Port and Mini USB Port
Context Sensitive Help
Light Weight Rugged Enclosure
Easy To Read Color Display
CertSoft Report Software
Long Battery Life
Ordering Information
FTE-7500A-QUAD 850/13001310/1550nm Quad Wavelength OTDR W/VFL and LTS and Video Scope Capability (Probe Sold Seaparately)
FTE-SCASE-LG Soft Case for FTE-7500 Series
VIS-300 Video Probe 
FTE-7500A Specifications
Wavelength 850, 1300, 1310, 1550nm ±20nm
Dynamic Range 27/26dB MM, 36/34dB SM
Pulse Width 5 - 20,000 ns
Units of Measurement km, kf, mi
Event Dead zone 1m
Attenuation Dead Zone 5m
Resolution .125 - 32m
Distance Uncertainty ±(0.75m + 0.005% x distance + sampling resolution)
Full Scale Distance Range 1-64km MM, 1-240km SM
Typical Real-time Refresh Rate 2 Hz
Group Index of Refraction (GIR) 1.024 - 2.048
Linearity ± .05 dB/dB
Memory Capacity ~500
Memory Type Internal and Flash Drive
Power Supply / Charger Universal 110-220V with Interchangeable Mains
Battery 8hr
Storage Temperature -20° to 60°C
Operating Temperature Range -10° to 50°C
Dimensions (w/out rubber boot) 7.75” L x 4.5” W x 2.25” H
(197mm L x 114mm W x 57mm H)
Weight 2 lbs
Communications ports USB and USB Flash Drive Ports
Connector Styles FC, ST, SC Interchangeable
Accessories Provided Universal Power Adapter w/US, UK, Continental Europe, and Australian Plugs, Interchangeable FC/ST and SC Adapters, Windows/Telcordia SR4731 Software, Rubber Boot and Manual on CD


Power Meter
Detector Type InGaAs
Connector Type 2.5mm Interchangeable
Dynamic Range +5 to -77dB (CATV - +25 to -57dB)
Calibrated Wavelengths 850,1300,1310,1490,1550,1625nm
Units of Measurement dBm, dB
Resolution .01 dB
Power Measurement Uncertainty ±0.18 dB under reference conditions
± 0.25 dB from 0 to -65 dBm
± 0.35 dB from 0 to +5 dBm and from -65 to -77 dBm
Auto Test Range 0 to -40dB


CW Source
Fiber Type Single mode, Multimode
Wavelengths 850, 1300, 1310, 1550nm  ±20nm
Output Power 0 dBm
Laser Safety Classification Class I Safety Per FDA/CDRH and IEC-825-1 Regulation
Modulation Modes CW, 270 Hz, 1000 Hz, 2000 Hz


Visible Light Source
Emitter Type Laser
Wavelength 650nm ±5nm
Laser Safety Class Class II FDA21 CFR1040.10 & 1040.11 IEC 825-1: 1993
Connector Type 2.5mm Universal
Output Power 1mW Max.

Request a Quote