GB/T 33843-2017 in English
VALIDTest method for access network equipment-Passive optical network based on ethernet(EPON)
- Issued on:2017-05-31
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 5 business days
$670.00
《GB/T 33843-2017接入网设备测试方法 基于以太网方式的无源光网络（EPON）》由TC485（全国通信标准化技术委员会）归口，主管部门为工业和信息化部（通信）。
Introduction
EPON National Standard Core Test System
| Test Category | Key Indicators | Technical Parameters |
|---|---|---|
| Optical Interface Characteristics | Transmission Power/Wavelength/Extinction Ratio | OLT:1480-1500nm/-3~+7dBm ONU:1260-1360nm/-1~+4dBm |
| Transmission Performance | Splitting Ratio/Transmission Distance | 1:64 Splitting Ratio/20km Transmission |
| Functional Verification | DBA/VLAN/QoS | Bandwidth Allocation Accuracy±5% |
In-depth Analysis of Optical Interface Characteristics
Chapter 5 of the standard specifies in detail 11 optical parameter tests for OLT and ONU:
- Average Transmit Power: The burst mode test method is used, and the ONU needs to distinguish between the benchmark method and the alternative method
- Spectral Characteristics: The SLM laser requires a -20dB spectrum width of ≤1nm and a side mode suppression ratio of ≥30dB
- Receiver Sensitivity: The PX20+ model requires a BER of ≤-30dBm when <10-12
Typical Test Configuration Examples
Receiver sensitivity test
Using the IETF RFC 2544 standard method, the optical attenuator is adjusted to make the packet loss rate close to 10-9, and the calculation formula is:
BER = 1 - (1 - packet loss rate)1/n (n is the number of bits in the frame length)
Implementation suggestions
- Environmental testing must be performed strictly in the order specified in 10.1
- DBA function verification recommends a three-stage test method: fixed bandwidth → guaranteed bandwidth → best effort
- Electromagnetic compatibility testing must simultaneously meet the requirements of GB9254 and GB/T17618
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