Terahertz Technologies Inc.Terahertz Technologies Inc.
(888) U.S.-OTDRS
LTS1500 Loss Test Set-LTS

The LTS-1500 greatly simplifies and expedites measurements of fiber optic links. As a power meter, it incorporates a highly sensitive and stable InGaAs detector with six calibrated wavelengths that affords the user a measurement range of +5 to -75 dBm. It also performs fiber identification tasks. For fiber loss measurements, the unit's Auto test mode automatically measures loss at each of the three wavelengths and displays the appropriate corresponding fiber loss value. Pressing the Store Loss button records all three measurements for later downloading and analysis via its USB port. Up to 2000 triple wavelength measurements may be recorded.

The LTS-1500 is an indispensable tool for fiber installation and maintenance. It measures optical power and performs automatic loss measurements at up to three Wavelengths. It stores up to 2000 triple Wavelength loss measurements for USB download and analysis.


Automated loss measurements
Auto Wavelength Recognition
InGaAs detector for temperature stability and wide dynamic range
Universal Power Meter and Light Source in one unit
Power Meter with 80 dB dynamic Range
Power meter accepts any connector with a 2.5 mm ferrule
Built in source is equipped with adaptors for FC, ST, or SC connectors
Stable single port laser source
Storage for 200 triple wavelength loss measurements

Rechargeable Li polymer 9V battery

USB interface with free PC application software
Ordering Information
LTS-1500-813 Loss Test Set with 850/1300nm Multimode Light Source
LTS-1500-35 Loss Test Set with 1310/1550nm Singlemode Light Source
LTS-1500-345 Loss Test Set with 1310/1490/1550nm Singlemode Light Source
For CATV power meter specifications, add  “-C” to the end of the part number.



Power Meter Specifications
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
± 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
Storage Locations 2000
Battery / Operating Time Rechargeable Li Polymer
Approximately twenty hours following a full charge


Light Source Specifications
 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
Output Stability ± .05 dB / 24 hrs @ constant temp,
± .02 dB/C temperature coefficient
Spectral Width

< 3nm typ.

Battery / Operation Time Rechargeable Li Polymer
Approximately fifteen hours following a full charge


General Specifications
Power Supply / Charger  Universal, US, UK. Continental Europe,
and Australian Plugs Included
Power Requirements 95-260 VAC, 50-60 Hz, 3 VA Max
Operating Temperature Range -0 to 40 C
Storage Temperature Range Equipment -10 to 60C, Battery 0-40C
Dimensions (Each Unit) 5.9” L x 3.9” W x 1.37” H (150mm L x 100mm W x 35mm H)
Weight (Each Unit) 1.15 lbs. (0.52 Kg)
Accessories Provided

FC, ST, SC adaptors, rubber boot, battery,
power supply/Charger,
manual on CD. (USB Cable,
CertSoft Software Suite with power meter) 

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