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ZTE / Optical communications and networking

ZTE 10G SFP+ 40km Equipment information & support

The ZTE 10G SFP+ 1550nm 40km (SM-40KM-1550-10G-C) is a high-performance extended-reach optical transceiver engineered for long-distance 10Gbps Ethernet links up to 40km over single-mode fiber with duplex LC interface.

Equipment information

Brand
ZTE
Equipment model
ZTE 10G SFP+ 40km
Equipment type
Optical communications and networking
Controller / software version
Confirm against the installed equipment
View full product specifications
ZTE 10G SFP+ 40km Official Product View 1

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Physical Form Factor
SFP+
Data Rate
10.3125 Gbps
Central Wavelength
1550 nm
Maximum Distance
40 km
Fiber Type
Single-Mode Fiber (SMF) (SMF)
Optical Connector
Duplex LC (red pull tab)

Alarms & troubleshooting

RX_LOS (Optical RX Loss of Signal)
Port LINK LED off, chassis ALM LED solid red
Fiber link broken or disconnected, peer optical transmitter disabled or faulty, contaminated LC connector end-face, or link attenuation exceeding sensitivity threshold (<-15.8 dBm)
1. Access ZTE CLI and execute 'show interface optical-transceiver' to check RX optical power. 2. Verify peer device TX status and confirm remote transmit power is within normal specs. 3. Inspect and clean optical LC connector end-faces using a fiber inspection probe and cleaner. 4. Measure link attenuation with an optical power meter and locate faults using an OTDR along the 40km span; replace defective patch cords.
TX_FAULT (Transmitter Hardware Fault)
Port LINK LED off, module/fault indicator solid red
Internal EML/DFB laser driver circuit failure, TEC controller malfunction, internal DC short circuit, or Tx_Fault hardware pin asserted
1. Execute 'shutdown' and 'undo shutdown' on the interface to reset the optical driver. 2. Remove the SFP+ module and inspect the gold-finger contacts for oxidation, debris, or pin damage. 3. Reseat the module firmly and observe if the Tx_Fault hardware status clears. 4. If the alarm persists after reseating, replace the defective ZTE 10G SFP+ 40km transceiver.
TX_BIAS_HIGH (Laser Bias Current High Alarm)
Port LINK LED solid green, system ALM LED blinking amber slowly
Laser diode degradation/aging reducing quantum efficiency, APC (Automatic Power Control) circuit driving higher current to maintain target optical output, or module internal thermal stress
1. Execute 'show interface optical-transceiver' to read the laser bias current (Ibias) and verify against threshold (typically >80mA). 2. Monitor optical TX output power for stability or degradation. 3. Recognize this alarm as an end-of-life (EOL) indicator for the laser diode; schedule preventive replacement. 4. Replace the degrading SFP+ transceiver during an approved maintenance window before total link failure.
TEMP_HIGH (SFP+ Operating Temperature High Alarm)
Port LINK LED solid green, system ALM LED solid amber
Chassis fan tray failure or reduced RPM, clogged air filters blocking airflow, equipment room HVAC failure (ambient temp >45°C), or thermal accumulation from densely populated high-power modules (DDM temp >75°C)
1. Run 'show environment' or 'show fan' to verify fan tray operational status and speeds. 2. Inspect and clean chassis air dust filters to restore unobstructed airflow. 3. Check equipment room HVAC cooling operation to ensure ambient temperature is within 20°C-25°C. 4. If surrounding modules report normal temperatures and only this module exceeds 75°C, internal TEC/thermistor failure is indicated; replace the SFP+ module.
RX_POWER_LOW (Optical RX Power Low & High CRC Error Rate)
Port LINK LED irregularly flashing amber/green, chassis ALM LED solid amber
Fiber macro-bending or micro-bending loss, high-loss fusion splices on the 40km single-mode span, scratched or partially soiled LC connectors, optical margin near receiver sensitivity limit causing high CRC and FCS packet drops
1. Run 'show interface <port>' to verify CRC/FCS error counters and check DDM RX power (nominal range: -8 dBm to -14 dBm). 2. Inspect patch cords along the rack and ODF; eliminate any tight bend radiuses below 30mm. 3. Clean all optical adapters, patch cables, and transceiver ports using specialized dry fiber cleaners. 4. Perform bi-directional OTDR trace over the 40km link to locate and re-splice high-loss fiber splices or damaged sections.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

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