Specification
| Model | EVA50-40 | EVA50-60 | EVA50-80 |
| Attenuating Range | 40 dB (SM) | 60 dB (SM) | 80 dB (SM) |
| Calibrated Wavelengths | 1310nm / 1490nm / 1550nm | ||
| Fiber Mode | SM | ||
| Attenuating Mode | Digital | ||
| Display Resolving Power | 0.1 dB | ||
| Display | LCD, 128*64 | ||
| Max Input Power | + 28 dBm | ||
| Return Loss* | > 40 dB | ||
| Insertion Loss* | < 2.5 dB | ||
| Connector | FC/PC (or customize) | ||
| Uncertainty | 0.5 dB | ||
| Repeatability* | 0.2 dB | ||
| RS-232 | Optional | ||
| Auto Power Off | No operation in 10 minutes (can be canceled), Low battery energy | ||
| Battery Charge | Yes | ||
| Operate Time | Above 20 hours | ||
| Power Supply | 3 * AA batteries or AC/DC adapter | ||
