Corning OS-400 MM Optical Light Source
The Corning Cable Systems OS-400 Series Optical Light Source provides accurate, user-friendly, and economical fiber testing capabilities for incoming inspections, maintenance, troubleshooting, and system verification. The OS-400 features an ergonomic design that is rugged enough to withstand the harshest testing environments. This source can be coupled with a Corning Cable Systems power meter to create an attenuation test set.
The OS-400 Series Optical Light Source is a multifunctional optical light source with up to three single-mode wavelengths on one port or four wavelengths (two single-mode and two multimode) on two ports. A variety of wavelength configurations is available including 850 nm, 1300 nm, 1310 nm, 1490 nm and 1550 nm. The OS-400 sources have the highest output power in the industry.
The OS-400 offers source signal modulation frequencies of 270 Hz, 1 kHz, 2 kHz, CW (unmodulated) and Auto. A source modulation setting of Auto allows compatible Corning Cable Systems power meters to automatically detect the wavelength being transmitted by the source. Additionally, the OS-400 can be used to transmit a reference power level to a compatible power meter over a long distance, allowing a remote reference to be set without the source and meter being at the same location.
The OS-400 Series Light Source includes the unique Universal Interface which allows the user to change the source connector adapters in the field with no tools. A wide variety of industry standard adapters is available.
Rugged and compact handheld source
Universal interface with field-interchangeable connector adapters
Source frequency modulation and automatic wavelength detection modes
Central Wavelength (nm)
850 ± 25
1300 + 50/-10
Spectral Width (nm)
Output Power (dBm)
= -18 / = -18 (62.5µm)
Power Stability (dB) 8 hours
Battery Life (hours)
Enables Automatic Wavelength Recognition
Tone Generation (Hz)
270, 1 k, 2 k
18.5 x 10.0 x 5.5 cm (7.25 x 4 x 2.125 in)
0.4 kg (0.9 lb)
-10º to 50º C (14º to 122º F)
-40º to 70º C (-40º to 158º F)
0% to 95% non-condensing
21 CFR 1040.10 and IEC 60825-1:1993+A1:1997+A2:2001
Class 1M Laser Product
For full Corning OS-400 product specifications, please click here: Corning OS-400