The EXFO FOT-12AX is a handheld optical power meter engineered for precision measurement of optical power and loss across fiber optic networks. Built around a GeX high-power germanium detector with 2 mm aperture, it delivers traceable NIST-calibrated readings from -50 dBm to +21 dBm with ±0.05 dB resolution and ±5% uncertainty. The instrument performs direct loss measurement in dB, transmitter power assessment in dBm and watts, and component insertion-loss characterization. A 2 kHz signal detection capability enables fiber identification in the field. Electrical offset nulling ensures reliable operation across extreme temperature ranges. Single 9V alkaline battery powers the meter for over 14 hours per charge, with auto-off functionality to extend runtime. Compact, shockproof holster design and user-friendly interface support rapid deployment by field technicians and network engineers during installation, maintenance, and troubleshooting operations. ## Technical Specifications • Detector: GeX (2 mm) high-power germanium detector
• Calibrated Wavelengths: 780 nm, 850 nm, 1300 nm, 1310 nm, 1550 nm
• Measurement Range: -50 dBm to +21 dBm
• Resolution: ±0.05 dB
• Measurement Uncertainty: ±5%
• Power Measurement Units: dBm, watts
• Loss Measurement: Direct dB readings
• Signal Detection: 2 kHz fiber identification capability
• Offset Nulling: Electrical offset for extreme temperature operation
• Battery: Single 9V alkaline, 14+ hours operation ## Key Features • NIST-traceable calibration ensures measurement accuracy
• Compact, rugged construction rated for field environments
• Automatic power-off conserves battery life
• Shockproof holster with integrated storage for adapters and batteries
• Linear amplification technology ## Typical Applications • Transmitter power measurements
• Fiber-link loss testing
• Component insertion-loss characterization
• Fiber identification via 2 kHz signal detection
• LAN installation and maintenance
• Fiber performance evaluation in scientific and industrial settings
Exfo FOT-12AX Optical Power Meter
$129.00
Offer available until December 31, 2027
The Exfo FOT-12AX is a handheld optical power meter designed for accurate and reliable measurement of optical power in fiber optic networks. It features a wide dynamic range, multiple wavelength calibration, and a user-friendly interface. Ideal for field technicians and network engineers.
In stock
| MPN | FOT-12AX |
|---|---|
| Power Range (dBm) | -50 dBm to +21 dBm |
| Voltage / Current Range | 9V alkaline battery |
| Wavelength Range | 1300 nm, 1310 nm, 1550 nm, 780 nm, 850 nm |
| Brand Name | Exfo |


