Exfo
Exfo FOS-125A
LED Light Source
1310/1550 nm Wavelengths
-5 dBm (typical) Output Power
Fabry-Perot (FP) Laser Source Type
Universal adapter port (FC, SC, ST, LC compatible) Connector Type
±0.05 dB over 8 hours Stability

| Attribute | Value |
|---|---|
| Wavelengths | 1310/1550 nm |
| Output Power | -5 dBm (typical) |
| Source Type | Fabry-Perot (FP) Laser |
| Connector Type | Universal adapter port (FC, SC, ST, LC compatible) |
| Stability | ±0.05 dB over 8 hours |
| Modulation | CW, 270 Hz, 1 kHz, 2 kHz |
| Battery Life | Up to 70 hours with alkaline batteries |
| Power Supply | 3 x AA alkaline batteries or AC adapter |
| Operating Temperature | -10°C to +50°C (14°F to 122°F) |
| Dimensions | 152 mm x 76 mm x 38 mm (6.0 in x 3.0 in x 1.5 in) |
Exfo FOS-125A Options:
- FOS-125A - 50 - FC/PC Connector
- FOS-125A - 54 - SC/PC Connector
- FOS-125A - 74 - ST/PC Connector
- FOS-125A - EI-EUI-28 - UPC/DIN 47256 Connector
- FOS-125A - EI-EUI-76 - UPC/HMS-10/AG Connector
- FOS-125A - EI-EUI-89 - UPC/FC narrow key Connector
- FOS-125A - EI-EUI-90 - UPC/ST Connector
- FOS-125A - EI-EUI-91 - UPC/SC Connector
- FOS-125A - EI-EUI-95 - UPC/E-2000 Connector
| Model | FOS-125A |
|---|
Dual wavelength, dual output port hand-held LED Optical Source ideally suited for end-to-end and continuity testing. Features CW for power/loss measurements and 2 kHz signal generation for fiber identification. Dual powering: 9 V battery and AC adapter/charger . Auto-off function.




