Terahertz Technologies Inc.Terahertz Technologies Inc.
(888) U.S.-OTDRS
FTE7500A 36/35dB OTDR

The FTE-7500A 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. It is available in 850/1300nm Dual Multimode, 1310/1550nm Dual Singlemode, Tri 1310/1550/1625nm and Quad 850/1300/1310/1550nm wavelength versions. Custom wavelengths may be requested to meet individual needs.

The FTE-7500A has a 36dB dynamic range and a 1 meter dead zone. These specifications, and a full set of operational modes, such as a one button fault finder, construction, real time and full manual mode, make it perfect for testing and troubleshooting requirements in LAN networks to Metro networks.

The FTE-7500A OTDR also includes a Visual Fault Locator, AutoTest/AutoWave Power Meter, Stable Light Source and a Video Inspection Scope

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 in at less then two 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.

Print professional reports that can include loss tests set measurements and connector end face images With the included "CertSoft" certification software suite.

36 dB Dynamic Range
Instant On
1 Meter Dead Zone
Event Table with Pass/Fail Feature
Trace Overlay Capability
Onboard Memory for ~500 traces
Auto Test Power Meter
Stable Light Source
Built in Video Inspection 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-8513 850/1300nm Multimode Dual Wavelength OTDR W/VFL and LTS
FTE-7500A-1315 1310/1550nm Single Mode Dual Wavelength OTDR W/VFL and LTS
FTE-7500A-1315EXT 38dB 1310/1550nm Single Mode Dual Wavelength OTDR W/VFL and LTS 
FTE-7500A-QUAD 850/13001310/1550nm Quad Wavelength OTDR W/VFL and LTS
FTE-7500A-131516 1310/1550/1625nm Triple Wavelength OTDR W/VFL and LTS
FTE-7500A-131516-ACT 1310/1550/1625nm Triple Wavelength OTDR with Filtered 1625nm Port, VFL and LTS
FTE-SCASE-LG Soft Case for FTE-7500 and FTE-8000 Series
CI1100 Video Probe for FTE7500 and FTE-8000 Series
FTE-7500A Specifications
Wavelength 850, 1300, 1310, 1550, 1625nm ±20nm
Dynamic Range 27/26dB MM, 36/34/34dB SM, Extended Range 38dB
Pulse Width 5 - 20,000 ns
Units of Measurement km, kf, mi
Event Dead zone 1m
Attenuation Dead Zone 4m
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
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, 1550, 1625 nm ±20nm
Output Power 0 dBm (-3dBm @ 1625nm)
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
Connector Type 2.5mm Universal
Output Power 1mW Max.
Data Sheet
FTE-7500A Data Sheet
Fiber Optic Test Equipment Brochure
FTE-7500A CWDM Manual
Software Download
V1 CertSoft Reporting Software
V2 Certsoft Reporting Software

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