JW3303 Handheld Optical Variable Attenuator
The JW3303 handheld optical variable attenuator is used for continuously variable optical signal attenuation. Designed for use in laser systems during online testing, it is suitable for both digital communication systems (e.g., PDH, SDH) and analog modulation systems (e.g., CATV).
Main Features:
- Stepwise attenuation via rotary dial with 0.05 dB steps
- Displays attenuation values in both dB and dBm
- 10-minute auto-off function can be toggled using keypad
- Memory function restores last attenuation value and step after power-off
- Portable, rugged, and lightweight; easy to operate
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Applications:
- Telecom maintenance
- CATV maintenance
- Comprehensive cable construction systems
- Optical instruments R&D
- Optical communication education and lab testing
- Other optical projects
Specifications:
| Parameter |
JW3303 |
| Attenuating Wavelength Range | 1260~1650 nm |
| Optical Connector | FC/PC |
| Calibrated Wavelengths | 1310 / 1490 / 1550 / 1625 nm |
| Measurement Range | 2.5~65 dB |
| Linearity | ±0.5 dB |
| Repeatability | ±0.2 dB |
| Attenuating Accuracy | ±0.8 dB |
| Return Loss (Input / Output) | >35 dB (typical 40 dB) |
| Max Input Power | +20 dBm |
| Display Type | 128×64 lattice B/W display with white backlight |
| Rechargeable Battery | 7.4V |
| Power Supply Adapter | 7~8.5V |
| Operating Temperature | 0~40°C |
| Storage Temperature | -10~60°C |
| Humidity | 0~85% (non-condensing) |
| Dimensions | 210 × 115 × 55 mm |
| Weight | 450g |
| Fiber Model | 9/125 ?m SM |
| Resolution | 0.05 dBm |
| Minimum Insertion Loss | < 2.5 dB |
Standard Package Includes:
| Model |
Includes |
| JW3303 |
JW3303 Main Body, Protective Rubber Boot, Rechargeable Battery, Power Supply Adapter, Instruction Manual, Cotton Swabs, and Rigid Hard Carrying Case.
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