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The LR 92 A 1491 is an extremely low-noise optical receiver. Because of the high output level it is particularly well suited for the direct house distribution. It can be displayed through the LED and the DC measurement point, in the range of -8 to +1 dBm. The return path transmission is ensured through the 1490 nm DFB-laser. Multiple return path wavelengths on the same fibre are useable via CWDM. The output level is stable due to the automatic level control in the receive path. Its compact design requires a minimum amount of space, and the built-in measuring socket allows for control of the signals.
- Compact HFC fiber node for FttB and FttH networks
- DFB laser for the return-transmission with high signal quality
- Several upstream wavelengths on one common fiber by using CWDM
- High output level enables direct in-house distribution
- Extremely low receiver noise for good reception quality at low input levels
- Manual adjustment of optical level compensation for maximum flexibility
- LED and DC test point for monitoring of optical input power
Downstream | |
| Wavelength | 1260...1610 nm |
| Optical input level | -8 ... +1 dBm |
| Frequency range downstream | 85 ...1006 MHz |
| RF output level, sloped | 98 dBµV (CENELEC 42 channels, 6 dB slope, at CSO/CTB >60 dB) |
| RF output level, flat | 80 dBµV (CENELEC 42 channels, flat, at CSO/CTB >60 dB) |
| Attenuator downstream | 0 ... 20 dB |
| Noise current density | ≤ 4 pA/√Hz |
| Output test point | -20 dB |
Upstream | |
| Laser type | Distributed Feedback (DFB) |
| Wavelength upstream | 1490 nm |
| Optical output power | +3 dBm |
| Frequency range upstream | 5 ... 65 MHz |
| Input level range | 70 ... 100 dBµV (for 5% OMI) |
| Attenuator upstream | 0 ... 30 dB |
| Input measurement socket | 70 dBµV (for 5% OMI) |
Connectors | |
| F-female | 2 pcs. (RF in-/output, test port) |
| Input return loss | 18 dB (-1,5 dB/Oct.) |
| SC/APC connectors | 2 pcs. (Downstream input, upstream output) |
| Optical return loss | > 40 dB |
General data | |
| Operating voltage AC | 230 V |
| Power consumption | < 6 W |
| Operating temperature range | -20...+50 °C |
| Dimensions (width x height x depth) | 163 x 90 x 50 mm |
| Sales unit | 1 pcs. |
| Dimensions (WxHxD) sales unit | mm |
| Packaging volume sales unit | dm³ |
| Gross weight sales unit | kg |
| Shipping unit | 1 pcs. |
| Dimensions (WxHxD) shipping unit | mm |
| Packaging volume shipping package | 2,4 dm³ |
| Gross weight shipping unit | 0,78 kg |
| EAN | 4010056737979 |
| Article number | 73797 |
| Customs tariff number | 85176200 |
