3.Specifications
| Calibrating wave length | 1310 upstream measurement | 1490 downstream measurement | 1550 downstream measurement |
| Spectral passband (nm) | 1260～1360 | 1470～1505 | 1535～1570 |
| Measurement range (dBm) | -40～+10 | -40～+10 | -40～+20 |
| Isolation 1310nm (dB) | – | >40 | >40 |
| Isolation 1490nm (dB) | >40 | – | >30 |
| Isolation 1550nm (dB) | >40 | >40 | – |
| Measurement accuracy | |||
| Connatural uncertainty (dB) | ±0.5 | ||
| PDL (dB) | <±0.25 | ||
| Linearity (dB) | ±0.1 | ||
| Pass through insertion loss (dB) | <1.5 | ||
| General Indicators | |
| Display | LCD:320×240 |
| Unit | dB dBm xW |
| Resolution | 0.01dB |
| Input voltage | DC 6.5V～8.5V |
| Rechargeable battery | 7.4V |
| AC adapter | 8.4V |
| Type of optical fibre | Single mode optical fibre |
| Working temperature | -10～60℃ |
| Storage temperature | -25～70℃ |
| Dimensions (mm) | 210 x 115 x 55 |
