Ascent Communication Technology

AON121X Series Optical Node

AON121X Series 1- or 2-port two-way Optical Node is part of ACT Deep Fiber solution, which has been designed to deliver interactive CATV, high capacity DOCSIS Data and other advanced services. The cost-effective node platform helps service providers expand bandwidth of their existing HFC network while minimizing capital investment.

• High response PIN photoelectric conversion tube.

• Optimized circuit design, SMT process production, optimized signal path, make the photoelectric signal transmission smoother.

• Specialized RF attenuation chip, with good RF attenuation and equilibrium linear, high accuracy.

• GaAs amplifier device, power doubler output, with high gain and low distortion.

• Single Chip Microcomputer (SCM) control equipment working, LCD display the parameters, convenience and intuitive operation, and stable performance.

• Excellent AGC performance, when the input optical power range is -9 dBm to +2 dBm, the output level remains unchanged, CTB and CSO basically unchanged.

• Reserved data communication interface, can connect with the Ethernet transponder, access to network management system.

• Return emission can select burst mode to sharply decrease the noise convergence and reduce the forepart receiver number.

• ONU module optional.

Optical Parameters

Operating Wavelength	1260 nm 1650 nm
Pass Wavelength	1540 nm to 1560 nm
Reflect Wavelength	<1540nm >1560nm
Insertion Loss	<0.7 dB
Isolation Com‑Pass	>35 dB @1490, 1577 nm
Isolation Ref‑Pass	>35 dB @1270, 1310 nm
Return Loss	>45 dB
Responsivity	>0.85 mA/mW
Connector	SC/APC

RF Parameters

Downstream
Optical Power	‑9 dBm to +2 dBm
C/N	≥51 dB	Output Level 106 dBμV EQ 8 dB 79 ch PAL‑D OMI = 3.5 %
C/CTB	≥63 dB
C/CSO	≥60 dB
Frequency Range	85 MHz to 1218 MHz
Flatness	±0.75 dB
Standard Output Level	≥ 106 dBµV
Max Output Level	≥108 dBµV
Output Return Loss	≥16 dB
EQ Range	0 dB to 15 dB
ATT Range	0 dBµV to 15 dBµV
Upstream
Optical Wavelength	1611 nm
Output Optical Power	3 dBm, DFB
Frequency Range	5 MHz to 65 MHz
Flatness in Band	± 0.75 dB
Input Return Loss	≥16 dB
Input Level	72 dBμV to 85 dBμV
Output Impedance	75 Ω
NPR Dynamic Range	≥15 dB (NPR ≥ 30 dB)
General
Supply Voltage	AC (150 to 265) V / AC (35 to 90) V
Operating Temperature	‑40 °C to +60 °C
Storage Temperature	‑40 °C to +65 °C
Relative Humidity	0 % to 95% (non‑condensing)
Consumption	≤20 VA
Dimension (L×W×H)	280 mm × 260 mm × 70 mm
Net Weight	2.8 kg