L2B series FTTB CATV Receiver
L2B series, is a low power consumption, high index, with SNMP network management, AGC, full function FTTB optical receiver. 2000 series’ shells are structure compact aluminum wall mount ( without rain-proof ), RF interface horizontal output, Nixie tube displaying parameters. RF Overlay interface is optional for IP/QAM and EOC insert, also can used for local program insert.
1. RF output port number: L2B1CRxx110, one output port 110dBμV.
L2B1CRxx106, two ports 106dBμV output.
L2B4CRxx102, four ports 102dB μ V output.
2. PD operation bandwidth:
L2BxCR41xxx, 47~1050MHz.
L2BxCR81xxx, 88~1050MHz , RF Overlay:5~65MHz.
3. L2BxCRxxxxx -N with SNMP, can using for remote management and control.
4. L2BxCRxxxxx -R with RF input port, can using for IP/QAM or EOC insert.
5. L2BxCRxxxxx -C with CWDM, can using for FTTx PON ‘ s single fiber multi wave application
- Work bandwidth: 47~1050MHz or 88-1050MHz.
- Excellent AGC feature: Pin: – 7.0dBm~+2dBm , Δ Vo : ≤± 0.5dB.
- Low noise ( 3.8% modulation, -8dBm receive, CNR ≥ 46dB ).
- High level output 110 dBμV.
- Output level ( Vo ) and slope(EQ) can continuation adjust(By 1dB step).
- No. of RF output: 1way , 2ways, 4ways can be optional.
- RF Overlay interface can be optional for IP/QAM or EOC input.
- L2BxCR81xxx, applies to 5~65MHz low frequency EOC inter-cut.
- Optional SNMP network management.
- Nixie tube displaying all kinds of technical parameters of the overall unit and IP address ( revisability).
- Adapts MMIC Amplifier, low power consumption less than 6W
| Optical specifications | Remark | ||
| Operating wavelength | nm | 1260~1620 | without CWDM option |
| 1540~1560 | -F & -C Options | ||
| Input wavelength | nm | 1310, 1490/1550 | |
| Pass wavelength | nm | 1310, 1490 | |
| Channel isolation | dB | >40 | |
| Responsivity | A/W | >0.85 | 1310nm |
| >0.9 | 1550nm | ||
| Optical AGC control range | dBm | +2~-9 | £GVo<¡Ó1.0dB |
| Receiving power | dBm | +2~-10 | Analog TV |
| +2~-16 | Digital TV | ||
| Optical return loss | dB | >50 | |
| Optical fiber connector | LC/APC | SC/APC or FC/APC | |
| RF specifications | |||
| Work bandwidth | MHz | 47-1050 | L2BaCR41 |
| 88~1050 | L2BaCR81 RF overlay 5~65MHz |
||
| Flatness | dB | <¡Ó1.0 | |
| Number of RF output | 1 | L2B1CRxx110 | |
| 2 | L2B2CRxx106 | ||
| 4 | L2B4CRxx102 | ||
| Output level | dBµV | 110 | L2B1CRxx110 |
| 106 | L2B2CRxx106 | ||
| 102 | L2B4CRxx102 | ||
| Return loss @ 47-862MHz | dB | >16 | L1BxCR48xxx (47~862MHz ) |
| dB | >12 | L1BxCR41xxx (47~1050MHz ) |
|
| ALC feature | dB | <±1 | Pin: -9.0~ +2.0dBm |
| EQ ADJ | dB | 0~15 | |
| Output level adjust | dB | -15~0 | 1dB stepping |
| RF overlay bandwidth | MHz | 47~1050 | L2BxCR41xxx |
| 5~65 | L2BxCR81xxx | ||
| RF overlay input level | dBµV | 80 | -R option |
| Output impedance | Ω | 75 | |
| RF port | F-Female | ||
| Analog TV specifications | |||
| Test channel | Ch | PAL D/59Ch | 47-550MHz Analog |
| Digital QAM | 550-1100 MHz | ||
| OMI | % | 3.8 | |
| CNR1 | dB | 53.5 | Pin= -2dBm |
| CNR2 | dB | 47.8 | Pin= -7dBm |
| CTB | dB | <-63 | Pin= -2dBm |
| CSO | dB | <-67 | Pin= -2dBm |
| HUM | dB | <-60 | |
| Digital TV specifications | |||
| Test channel | Ch | <10 | Analog |
| Digital QAM | 470-1100 MHz | ||
| MER | dB | 37 | Pin= -10.0~+2.0dBm |
| 33 | Pin= -16.0dBm | ||
| BER | dB | <1.0E-9 | Pin= -20.0~+2.0dBm |
| General specifications | |||
| SNMP connector | RJ45 | SNMP | |
| Operating voltage | V | 8 | External power supply |
| Operating current | A | 0.75 | |
| Power consumption | W | <15 | |
| Working temperature | ℃ | -40 ~ +60 | |
| Storage temperature | ℃ | -40 ~ +65 | |
| Relative Humidity | % | 5-59 | |
| Dimension | mm | 163x125x32 | WxDxH |
| Part number | RF power (dBuV) | RF bandwidth (MHz) | Number of RF outputs | SNMP Network Management |
| L2B1CR41110-cdd | 110 | 47~1050 | 1 | |
| L2B1CR81110-cdd | 110 | 88~1050 | 1 | |
| L2B2CR41106-cdd | 106 | 47~1050 | 2 | |
| L2B2CR81106-cdd | 106 | 88~1050 | 2 | |
| L2B4CR41102-cdd | 102 | 47~1050 | 4 | |
| L2B4CR81102-cdd | 102 | 88~1050 | 4 | |
| c: | C | 1310/1490 & 1550nm CWDM filter |
||
| F | 1550nm filter | |||
| dd: | SA | SC/APC | ||
| LA | LC/APC | |||
| e | R | RF Overlay | ||
| N | SNMP | |||
| X: | M- | with SNMP Network Management | ||
| N- | without SNMP Network Management |