Technical Specifications
| Network | None, 4G, 3G |
| Type | FTTH Handheld MINI OTDR |
| Use | FTTH |
| Product Name | NK4000 1310 nm/1550 nm 26/24DB VFL Fiber Optic Mini OTDR Tester |
| Wavelength | 1310 nm/1550 nm ± 20nm |
| Dynamic Range | 26 dB/24 dB |
| Event Blind Zone | 8.20 ft (2.5 m) |
| ATT Blind Zone | 26.25 ft (8 m) |
| Test Range | 0.31 mi to 62.13 mi (0.50 km to 100 km) |
| Loss Accuracy | ±0.2dB/dB |
| Fiber Type | G.652 SM Fiber |
| Pulse Width | 3ns to 20us |
| Ranging Accuracy | ±3.28 ft (1 m) + Sampling Interval + 0.005% + Test Distance) |
| Sampling Points | 16 k to 128 k |
| Sampling Resolution | 0.164 ft to 26.25 ft (0.05 m to 8 m) |
| Reflection Accuracy | ±3 dB |
| Data Storage | Internal: ≥600; External: TF Card |
| Laser Safety Level | Class II |
| File Format | SOR Standard File Format |
| Connector | FC/UPC (Interchangeable SC, ST) |
| Wave Range | 800 nm to 1700 nm |
| Interface Type | Universal Joint FC/SC/ST |
| Test Range (Optical Power Meter) | -50 dBm to +26 dBm |
| Uncertainty | ±5% |
| Frequency Identification | CW/270/330/1k/2kHz |
| Calibration Wavelength | 850/980/1300/1310/1490/1550/1625/1650nm |
| Output Power (Optical Power Meter) | ≥-5 dBm |
| Modulation Frequency | 270/330/1k/2kHz |
| Stability | CW, ±0.5dB/15min (Test after 15 mins of preheating) |
| Connector (VFL) | FC/SC/ST |
| Work Wavelength (VFL) | 650 nm ± 20 nm |
| Output Power (VFL) | ≥10mW |
| Mode (VFL) | CW/1Hz/2Hz |
| Test Range (VFL) | 300 m |
| Display | 4.3 in Color LCD |
| Data Interface | Micro USB |
| External Storage | TF Card |
| Power Supply | Polymer Li-battery: 3.7 V, 4000mAh; Power Adapter: 5VDC, 2A |
| Battery Life | Standby > 20h; Measuring Time > 12h |
| Operating Temperature | 14 °F to 122 °F (-10 ℃ to +50 ℃) |
| Storage Temperature | -40 °F to 158 °F (-40 ℃ to +70 ℃) |
| Relative Humidity | 0% to 95% non-condensing |
| Weight | ≤12.35 Oz (350 g) |
| Dimension | 6.81 in × 3.23 in × 1.46 in (17.3 cm × 8.2 cm × 3.7 cm) |
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