FEATURES:

• Simple and intuitive operation
• Large LCD shows measurement results and memory data at a glance
• Ergonomic key layout
• Memory function
• Store up to 1000 data for each wavelength: 850/1310/1550 nm
• Support for effective data processing
• USB interface and supplied application software allows easy communication with a computer

• Measurement Functions: Optical power measurement (dBm) Measure absolute value of input optical power Optical loss measurement (dB) Automatically compare measured power with previously input reference value to calculate and display loss
• Calibration Wavelength: 850 nm, 1310 nm, 1550 nm
• Range: -60 dBm to +9 dBm (auto range)
• Accuracy: ±0.22 dB (±5 %) at-10 dBm
• Resolution: 0.01 dBm (optical power), 0.01 dB (optical loss)
• Rated Max: +10 dBm
• Connector: FC, SC (using optional connector adapter)
• Fiber Type: Single mode, multi mode (core dia. 62.5 µm max. NA: 0.275 max.)
• Light Receiver: InGaAs (dia. 1 mm)
• Display Update Rate: Approx. 3 times/s (approx. 350 ms)
• Memory: Max. 1000 data per wavelength
• Interface: USB (Ver. 1.1): Dedicated PC application software allows transfer of measurement data from the 3661-20 memory to a computer
• Functions: Auto power save (after about 10 minutes of inactivity; defeatable)
• Settings backup (settings are automatically stored at power-off)
• Battery check (symbol appears when voltage drops below approx. 4 V)
• Power Supply: LR6(AA) alkaline battery × 4, 0.5 VA; Approx. 40 hours (continuous use)
• Dimensions: 85 mm(3.35)W × 192 mm(7.56)H (including 36 mm cover) × 35 mm(1.38)D
• Weight: 300g(10.6 oz) (without batteries)
• Accessories: 3853 CARRYING CASE (1), Strap(1)