The Advantest TQ8214 is a portable optical power meter that delivers precise measurement of optical signal power across configurable wavelength ranges. Built for field deployment in optical communications, laser systems, and R&D environments, the instrument combines high sensitivity with broad dynamic range through interchangeable sensor modules. Its LCD display presents power in linear (W) or logarithmic (dBm) units alongside wavelength readout, while automated compensation and user-selectable functions enable stable, accurate readings in variable conditions.
– Technical Specifications
Measurement Range & Sensitivity
• Wavelength range: 400 nm to 1650 nm (adaptable via sensor selection)
• Power measurement: -60 dBm to milliwatts (4½-digit dynamic range)
• Measurement speed: 2 measurements/s or faster
• Absolute accuracy: ±0.2% (A/D converter, including sensor accuracy)
Display & Readout
• Backlit LCD with 4-digit wavelength display (nm)
• Power readout: 4½ digits in mW, µW, nW, dBm, or dBr units
• Analog bar graph of input signal
Optical Sensors
• Short wavelength sensors (400–1100 nm): T082014, T082017
• Long wavelength sensors (800–1600 nm): T082015, T082018A
• High-sensitivity option: Q82018A (-60 dBm at 1.3 µm)
– Key Features
• Max-Hold function retains peak measured values
• dBr (relative value measurement) mode for reference-based testing
• Digital smoothing with 2–20 averaging cycles to suppress noise
• Auto/Manual ranging for optimal scale selection
• Automatic offset adjustment via dedicated sensor key
• Wavelength-sensitive compensation applied at set wavelength for direct absolute power reading
• Analog output (0 V to 2 V) proportional to input signal
– Electrical & Operational
• AC or built-in Ni-Cd battery operation
• Battery runtime: ≥10 hours continuous
• AC adapter for line power and charging
• Battery low indicator
– Typical Applications
• Fiber-optic network installation and maintenance
• Laser power characterization and alignment
• Optical component testing and qualification
• Field measurement in telecommunications systems
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