VOLTCRAFT PM-32 Optical Power Meter Fiber Optic Tester -70 to +10 dBm, 850-1625 nm, InGaAs, Universal 2.5 mm FC/SC/ST VC-11499080

The VOLTCRAFT PM-32 stands out as a professional-grade optical power meter that combines laboratory precision with field-ready durability. Unlike basic fiber testers limited to a single wavelength, this device covers seven calibrated wavelengths from 850 nm to 1625 nm, making it suitable for both multimode and single-mode fiber networks. Its universal 2.5 mm connector port accepts FC, SC, and ST interfaces directly, eliminating the need for adapters and reducing the risk of contamination or misalignment during measurements.

Highlights

• Wide measurement range from -70 dBm to +10 dBm with 0.01 dB resolution
• Calibrated for 850, 980, 1300, 1310, 1490, 1550, and 1625 nm wavelengths
• High-accuracy InGaAs detector with ±0.2 dB accuracy at key telecom wavelengths
• Universal 2.5 mm optical port fits FC, SC, and ST connectors without adapters
• Backlit LCD display with selectable units: dBm, mW, and µW
• Relative measurement mode (dB) for direct loss testing
• User calibration function and low battery indicator
• Auto power off after 10 minutes (can be disabled for long-term monitoring)
• Long battery life up to 240 hours using 3 AA batteries

In daily use

The PM-32 is built for technicians who need reliable power measurements in the field. Its compact, handheld design and backlit display allow comfortable operation in tight spaces and low-light environments. The relative measurement mode simplifies attenuation testing: store a reference value, then measure the difference in dB. The user calibration feature lets you compensate for connector or patch cord losses, ensuring accurate readings. With auto power off and a battery life of hundreds of hours, it is ready for long workdays without frequent battery changes.

Full specifications

• Measurement range: -70 to +10 dBm
• Calibrated wavelengths: 850 nm, 980 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm, 1625 nm
• Detector type: InGaAs
• Accuracy: ±0.2 dB (at 1300/1310/1550 nm)
• Resolution: 0.01 dB
• Optical connector: Universal 2.5 mm (FC/SC/ST compatible)
• Display: LCD with backlight
• Power source: 3x AA batteries
• Battery life: approx. 240 hours (without backlight)
• Auto power off: Yes (10 minutes, disableable)
• Operating temperature: -10 to +50 °C
• Storage temperature: -20 to +70 °C
• Measurement units: dBm, mW, µW
• Relative measurement: Yes (dB)
• User calibration: Yes
• Low battery indicator: Yes

Final note

The VOLTCRAFT PM-32 is a versatile and precise tool for fiber optic installation, maintenance, and troubleshooting. Its multi-wavelength support and universal connector make it a practical choice for both enterprise and field technicians.