The Huawei OSN3500 SSN1SL4A single board implements the reception and transmission of one STM-4 optical signal, completes the optoelectronic conversion of the STM-4 signal, the extraction and insertion processing of overhead bytes, and reports the alarms generated on the line.
Characteristic code of the single board
The single-board characteristic code is the code located after the single-board name in the single-board bar code.The single-board characteristic code of SL4A is used to describe the type of optical interface.
The relationship between the SL4A's single-board characterization code and the type of optical interface is shown in Table 1.
| Single-board | Characteristic code | Optical interface type |
|---|---|---|
| SSN1SL4A10 | 10 | S-4.1 |
| SSN1SL4A11 | 11 | L-4.1 |
| SSN1SL4A12 | 12 | L-4.2 |
| SSN1SL4A13 | 13 | Ve-4.2 |
| SSN1SL4A14 | 14 | I-4 |
| SSN1SL4A15 | 15 | S-4.1 |
| SSN1SL4A16 | 16 | L-4.1 |
| SSN1SL4A17 | 17 | L-4.2 |
| SSN1SL4A18 | 18 | Ve-4.2 |
| SSN1SL4A19 | 19 | I-4 |
| SSN1SL4A20 | 20 | S-4.1 |
| SSN1SL4A21 | 21 | L-4.1 |
| SSN1SL4A22 | 22 | L-4.2 |
| SSN1SL4A23 | 23 | Ve-4.2 |
SL4A single-board metrics include optical interface metrics, laser safety level, mechanical metrics, and power consumption.
Interface indicators
The optical interface metrics for the SL4A single board are shown in Table 1.
| Type | Description |
|---|---|
| I-4 | 2km STM-4 dual-fiber bidirectional optical interface |
| S-4.1 | 15km STM-4 Dual Fiber Bidirectional Optical Interface |
| L-4.1 | 40km STM-4 dual-fiber bidirectional optical interface |
| L-4.2 | 80km STM-4 dual-fiber bidirectional optical interface |
| Ve-4.2 | 100km STM-4 Dual Fiber Bidirectional Optical Interface |
| S-4.1 | 10km STM-4 single-fiber bidirectional optical interface |
| 80km CWDM | 80km CWDM STM-4 Optical Interface |
| 120km DWDM | 120km DWDM STM-4 optical interface |
Laser safety level
The single-board laser safety level is CLASS 1. The maximum output optical power of the single-board optical interface is less than 10 dBm (10 mW).
Mechanical Specifications
The mechanical specifications of the SL4A board are as follows:
- Veneer size: 25.4mm (W) x 235.2mm (D) x 261.4mm (H)
- Weight: 0.6kg
Power consumption
The maximum power consumption of the SL4A board is 17W at room temperature (25°C).


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