Exfo FOS-125A LED Light Source
Exfo Optical Light Sources. Model: FOS-125A.
- Model
- Exfo FOS-125A
- Calibration
- Available on request
- Price
- $320
- Status
- In stock
- RFQ ref
- FOS-125A
This unit
The Exfo FOS-125A is a portable LED light source purpose-built for fiber optic network installation and maintenance in field environments. It delivers stable output across dual wavelengths with switchable continuous wave and modulated signal modes, enabling both power/loss measurements and fiber identification tasks. The instrument combines compact dimensions with extended battery runtime, making it practical for technicians working across diverse site conditions.
Technical Specifications
Optical Performance- Wavelengths: 1310 nm and 1550 nm
- Spectral Width: 70 nm FWHM (both wavelengths)
- Launch Power (typical): – 9/125 µm fiber: -7 dBm – 50/125 µm fiber: -20 dBm Signal Modes
- Continuous Wave (CW) for power and loss measurements
- 2 kHz modulated signal for fiber identification Power Supply
- 9 V battery or standard AC adapter
- Battery runtime: minimum 7 hours continuous operation
- Auto-off timer: 10 minutes Physical & Mechanical
- Dimensions: 22.2 cm (H) × 10.3 cm (W) × 5.9 cm (D)
- Weight: 0.6 kg
- Shockproof PVC holster with carrying strap included
- Rigid carrying case provided
Key Features
- EXFO Universal Interface for direct connection to compatible detectors
- Dual-wavelength operation addresses both short-reach and long-haul fiber testing
- Field-optimized form factor and protective accessories reduce setup time
- Battery-backed operation with extended hold time supports remote installations
Typical Applications
- Fiber optic cable plant commissioning
- Maintenance and troubleshooting of installed networks
- Power loss budgeting during system design validation
- Non-destructive fiber identification in congested ducts or cable trays
Compatibility & Integration The FOS-125A integrates with EXFO's ecosystem of optical test instruments via the Universal Interface, allowing pairing with compatible power meters and optical loss test sets. Included connector set (SC, ST, FC) supports standard industry fiber terminations.
Specifications
| Parameter | Value |
|---|---|
| Power Range (dBm) | '-20 dBm (50/125 µm fiber), -7 dBm (9/125 µm fiber) | Voltage / Current Range: 9 V battery or standard AC adapter | Wavelength Range: 1310 nm and 1550 nm |
Exfo FOS-125A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Exfo FOS-125A. Calibration covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Exfo FOS-125A faults: laser diode end-of-life (output below spec), fiber output connector damage, output instability. Common repairs include laser diode replacement when output falls below spec, fiber output connector repair, and thermal management service.
Exfo FOS-125A price
This Exfo FOS-125A is listed at $320. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Exfo FOS-125A calibration cost
NIST-traceable calibration for the Exfo FOS-125A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. Turnaround is 1 to 3 business days after receipt. See full calibration details →
