Part Number: SEMT-55TX-07
Optical Transmitter for CATV 2*7mw SBS Tunable 1550nm External Modulated
The optical transmitter is designed for analog CATV system, it has highest cost performance in CATV long haul, Large distribution networks. Nonlinear effect, especial CSO, in analog LiNbO3 modulation is ensured by unique Auto Bias Control circuit (ABC), employing PLL tracking. Employing chirp effect to co-operate SPM effect to suppress SBS, make the contradiction of SBS with dispersion get to minimum，and the threshold of SBS can up to 20dBm. Excellent flatness, return loss, etc, is given by exact match on RF circuit. And, professional pre-distortion circuit for LiNbO3 modulator make the best CTB. Better stability and shorter MTTR is brought by redundancy hot swap power designing. It has been Excellent Network management performance by SNMP and Telnet.
Features
●Excellent Transmission performance index: CNR>52dB, CSO>65dB, CTB>65dB
●Standard 45MHz～1005MHz bandwidth, compatible with digital TV
●Unique CSO Auto adjust circuit, CTB pre-distortion circuit
●Perfect SBS Control: Chirp and SPM both
●Unique technology balance the contradiction between SBS threshold and dispersion
●Long distance transmission up to 140km
●Flexible for networking: SBS 13dBm~20dBm can be adjusted
●Perfect network interface: Support SNMP and Telnet
●Wide range RF control technique: AGC , MGC is optional
●Used for DWDM system and dispersion compensation
●ITU-T wavelength is optional and adjustable
●Dual power supply
Applications
1. FTTH
2. Video Optical transmission
3. Analog, Digital CATV Long-haul system
4. CATV Large distribution networks
Optical Characteristics
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Wavelength | λc | 1545 | 1550 | 1562 | nm |
| SMSR | SMS | 30 | ------ | ------ | dB |
| Output Power | Poi | 5*2 | 7*2 | 18 | dBm |
| RIN | RNF | ---------- | -160 | -155 | dBc/Hz |
| Return Loss | RL | ------- | ------- | -45 | dB |
| Output power stability | ΔPo | ----- | ±0.05 | ±0.1 | dB |
| CNR | CNR | 52 | ---- | ---- | dB |
| CTO | CTO | 65 | ---- | ---- | dB |
| CTB | CTB | 65 | ---- | ---- | dB |
| Flatness | Fl | ---- | ---- | ±0.75 | dB |
| SBS | SBS | 13 | ---- | 20 | dBm |
Electric Characteristics
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Frequency | 45 | --------- | 1000 | MHz |
| RF Input Level | 80 | 85 | 90 | dBuV |
| RF Input Impedance | ---- | 75 | ---- | Ω |
| RF Input Return Loss | 14 | --------- | --------- | dB |
Environmental Characteristics
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| OperatingTemperature | Tw | -5 | ----- | 60 | ℃ |
| Storage Temperature | Ts | -40 | ----- | 80 | ℃ |
| Humidity | ------ | 10 | ------ | 85 | % |
(3): No condensation
Mechanical Dimension
size: 436*369.7*44(mm)
Order Information
| Category | Structure | Application | Out put power | SBSThreshold | Voltage1 | Voltage 2 | Interface | SNMP |
|---|---|---|---|---|---|---|---|---|
| OTE: Optical Transmitter External | 19：1U OTE rack | 1：CATV | 5：5dBm*2 7：7dBm*2 9：9dBm*2 |
13：13dBm … 20：20dBm |
1:110VAC 2:220VAC 3:110~220VAC 4:-48VDC 9:other |
1:110VAC 2:220VAC 3:110~220VAC 4:-48VDC 9:other |
2:SC/APC 4:FC/APC 6:LC/APC 9:other |
0：W/O 1：W/ |
This product belongs to F-tone Networks' optical components product line. For detailed specifications, please contact our sales team. Thank you!
Important Notice:
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.
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Power and Wavelength Testing
Test the signal delivering strength and wavelength, to ensure the signal decoding capacity of the receiver, and the wavelength remains consistent from the transmitter to the receiver.
Traffic Testing
Test the bit error rate and packet loss rate, to make them meet the corresponding standards and ensure the performance of transceivers.
Optical Performance Testing
Test the transceivers' eye diagram situation, receiving sensitivity, extinction ratio, wavelength, light-emitting, light-receiving, current and voltage, to ensure the signal quality, stability and reliability of the transmission.
End Face Testing
Check the end face of the transceivers and keep them clean for more stable data transmission, better performance, and durability.
Various Switch Tests
Every module is quality tested for compatibility in the multi-brand switches environment, guaranteeing flawless operations.