PMU11A
Huawei PMU11A Power System Environment & Battery Data Acquisition Monitoring Module (CAN/RS485)
Product information
View supportSupport & Troubleshooting
Find equipment information and technical guides by model, and bring clarity to on-site issues.
Find support by equipment
Choose a device to view its information and ask a specific technical question.
PSM-831D
Emerson PSM-831D Telecom Power Supervisory Environment Controller (LCD/RS485)
Product information
View support
PSM-D21
Emerson PSM-D21 DC Utility Power Monitoring & Battery String Inspection Unit (LCD/Hot-Plug)
Product information
View support
R4815G1
Huawei R4815G1 Ultra-Compact Telecom Rectifier Module -48V 15A 1000W
Product information
View support
R4830G1
Huawei R4830G1 High Efficiency Telecom Rectifier Module -48V 30A 2000W
Product information
View support
R4850G2
Huawei R4850G2 High Efficiency Telecom Rectifier Module -48V 50A
Product information
View supportTechnical guides & references
Explore published articles on equipment selection, interfaces and maintenance.
Engineering Guide: Telecom Rectifier Gold Finger Pinout, Standalone Jumpers, and CAN Bus Voltage Tuning
A comprehensive technical breakdown of 48V/50A rectifier modules (Huawei R4850G2 / ETP48400 architecture), covering blind-mate connector pinouts, standalone startup jumpers, CAN 2.0B hex commands for CV/CC adjustment, and active current sharing troubleshooting.
Huawei 100G QSFP28 LR4 Optical Transceiver: Cleaning Procedure, Optical Power Testing & Troubleshooting Guide
A comprehensive hands-on engineering guide to Huawei 100G QSFP28 LR4 optical transceivers. Covers fiber end-face inspection and dry/wet cleaning protocols, DDM optical power measurement limits, and step-by-step troubleshooting for multi-vendor switch interoperability.
Huawei R4850G2 Rectifier Pinout Definition, Standalone Startup & 53.5V Wiring Guide
A comprehensive practical guide for field telecom engineers: deciphering the gold-finger backplane pinout of Huawei R4850G2 (50A/3000W), standalone offline startup without controller, CAN bus voltage adjustment, and safety precautions.
Have a model and an on-site issue?
Share the exact model, alarm text and observed symptoms to help identify relevant information and compatibility requirements.