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ZTE BPL1 Baseband Board Equipment information & support

The ZTE BPL1 is a high-density LTE baseband processing board engineered for ZTE ZXSDR BBU platforms, delivering multi-carrier LTE-FDD/TDD physical-layer modulation, baseband coding, and ultra-low latency CPRI link synchronization.

Equipment information

Brand
ZTE
Equipment model
ZTE BPL1 Baseband Board
Equipment type
ZTE
Controller / software version
Confirm against the installed equipment
View full product specifications
ZTE BPL1 Baseband Board Official Product View 4

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

Board Type
LTE-FDD/TDD multi-carrier baseband processing board
Port Density & Specs
Equipped with a high-speed fiber-optic CPRI interface for direct remote connection to RF RRU units
Supported Chassis
ZTE ZXSDR B8200 / B8300 series baseband subracks
Subscriber Capacity
Supports high-capacity LTE carrier aggregation computing
Typical Power Consumption
< 55 W
Operating Temperature
-10°C ~ +55°C

Alarms & troubleshooting

CPRI_LOS (CPRI Optical Signal Loss)
ALM LED solid red, corresponding OPT port LED off or solid red
Fiber patch cord broken or excessively bent; remote RRU powered off or SFP unplugged; faulty SFP module or RX optical power below receiver sensitivity threshold
1. Measure optical RX power using an optical power meter to confirm it is within nominal range (-15 dBm to -4 dBm); 2. Inspect and clean optical connectors and transceivers to resolve high insertion loss; 3. Verify remote RRU power feed and SFP operational status; 4. If optical path is normal, reseat or replace the SFP optical module on the BPL1 board.
SFP_TX_FAULT (SFP Transmitter Fault)
ALM LED flashes red slowly at 1Hz, corresponding OPT port LED amber or off
Laser diode degradation or failure; laser bias current exceeds maximum threshold; SFP internal hardware fault asserting the TX_FAULT hardware pin
1. Query SFP DDM diagnostic parameters via OMC/LMT to inspect laser bias current and TX power; 2. Extract SFP and check edge connector gold fingers for damage or contamination; 3. Reseat the module securely into the BPL1 cage; 4. If fault persists, replace with a ZTE-approved transceiver.
CPRI_BER_OVER (CPRI Bit Error Rate Over Limit)
ALM LED flashes amber or red, corresponding OPT port LED rapidly blinks green
Contaminated optical end-face or excessive micro-bending attenuation degrading OSNR; chromatic dispersion; marginal RX sensitivity; CPRI line clock jitter
1. Route optical cable properly to eliminate sharp bend radius; 2. Clean patch cord ferrule and BPL1 optical bulkhead with dedicated fiber cleaner pen; 3. Query CPRI error counters on OMC and perform counter reset test; 4. Replace patch cord or transceivers at local/remote ends.
SFP_MISMATCH (Optical Module Rate/Type Mismatch)
ALM LED solid amber, corresponding OPT port LED flashing amber slowly
Installed SFP line rate (e.g., 2.457G/4.915G/9.830G) mismatches BPL1 software configuration; wavelength or fiber mode mismatch (SMF vs MMF); unauthorized non-ZTE SFP transceiver
1. Query SFP electronic label in OMC to verify rate and wavelength; 2. Verify software port speed settings on the BPL1 CPRI configuration; 3. Confirm fiber type matches transceiver optics (SMF 1310nm vs MMF 850nm); 4. Replace with standard ZTE-certified SFP matching RRU line rate specifications.
BPL_TEMP_OVER (BPL1 Board Over-Temperature Alarm)
ALM LED solid red, RUN LED rapidly blinking green or solid green
BBU fan tray (FAN module) fault or blocked fan blades; BBU air filter heavily clogged with dust; equipment room/cabinet air conditioning failure (ambient temp >55°C); loose heatsink on baseband DSP chips
1. Inspect BBU fan tray LEDs and alarm status, replacing any defective fan module; 2. Remove and clean or replace the BBU dust filter; 3. Verify shelter/cabinet HVAC operation to restore inlet air temperature below 45°C; 4. If cooling is restored but temperature remains high, replace the BPL1 board.

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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