Optical Light Source (MM: 850/1300, SM: 1310/1550)

The OLS-UP30E-3L is a rugged, compact LED & Laser light source designed for performing insertion loss measurements on multimode and singlemode fiber optic links when used with an optical power meter. Light outputs are stabilized to ensure accurate test results. Instrument is ideal for the testing regular multimode networks on 850nm/1300nm and singlemode networks on 1310/1550nm ranges.

SKU: OLS-UP30E-4L Categories: ,



  • Robust, shock-proof and splash-proof design for field operation,
  • 4 sources build-in on 2 ports (850/1300 LED and 1310,1550nm),
  • Various types of signal modulation for fiber identification,
  • 10 minutes Auto-off function,
  • LCD display with backlight,
  • Up to 45 hours battery life.

Additional information

Wavelength [nm]

850/1300nm 1310/1550nm

Emitter type


Work mode

CW or 270Hz, 1kHz, 2kHz modulation

Power output [dBm]

>-20dBm -7dBm

Output stability [dB]

+0.05dB/15 min; +0.1dB/ 8 h

Optical connectors


Battery operating time [h]


Operating temp. [oC]


Storage temp. [oC]


Dimensions [mm]

190 x 100 x 48

Weight [g]