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

The FTE-7500A CWDM 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, Broadband Power Meter and CW Light Source.  It is available in standard models with 1471/1491/1511/1531nm  and 1551/1571/1591/1611nm.  Other combination of CWDM wavelengths may be order based on individual needs.

The FTE-7500A-CWDM has a 33dB 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 networks to Metro networks.

The FTE-7500A-CWDM OTDR also includes a Visual Fault Locator, Broadband 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 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.

Print professional reports that can include; loss tests set measurements and connector end face images with the included “CertSoft” certification software suite.

33 dB Dynamic Range
Instant On
CW Source with Built-In Broadband Power Meter
1 Meter Dead Zone
Event Table with Pass/Fail Feature
Trace Overlay Capability
Onboard Memory for ~500 traces
Built in Video Inspection Scope with Probe
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-LMNO 1471/1491/1511/1531nm CWDM OTDR W/VFL, LTS
FTE-7500A-PQRS 1551/1571/1591/1611nm CWDM  OTDR W/VFL, LTS, 
FTE-SCASE-LG  Soft Case for FTE-7500, FTE-6000and FTE-8000 Series
CI1100 Video Probe for FTE7500 and FTE-8000 Series

Please contact us with any special wavelength configuration requirements.             

FTE-7500A-CWDM Specifications
 Wavelength 1470/1491/1511/1531nm   or   1551/1571/1591/1611nm +/- 3nm
 Dynamic Range 33dB
 Pulse Width   5 - 20,000 ns
 Units of Measurement  km, kf, mi
 Event Dead zone 1m
 Attenuation Dead Zone   4m
Data Points Up to 120,000
 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 witn 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 Flash Drive


Power Meter
Detector Type InGaAs
Connector Type 2.5mm Interchangeable
Dynamic Range +5 to -77dB (CATV - +25 to -57dB)
Calibrated Wavelengths


Units of Measurement dBm, dB
Resolution .01 dB
Power Measurement
± 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 0to -40dB   (1310 and 1550nm)


CW Source 
 Fiber Type   Single mode, Multimode
Wavelengths 1470/1491/1511/1531   or   1551/1571/1591/1611nm +/- 3nm
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
Laser Safety Class Class IIFDA21 CFR1040.10 &1040.11 IEC 825-1: 1993
Connector Type 2.5mm Universal
Output Power 1mW Max.

*Specifications are subject to change without notice*

Data Sheet
Fiber Optic Test Equipment Brochure
Advanced Fiber Optic Test Equipment Brochure
Software Download
CertSoft Reporting Software

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