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ZTE BPQ0 Baseband Board Equipment information & support

The ZTE BPQ0 is an advanced high-capacity baseband processing line card engineered for ZTE ZXSDR BBU chassis, offering multi-carrier physical layer computation, high-density sector pooling, and seamless radio frequency link aggregation.

Equipment information

Brand
ZTE
Equipment model
ZTE BPQ0 Baseband Board
Equipment type
ZTE
Controller / software version
Confirm against the installed equipment
View full product specifications
ZTE BPQ0 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
Four-channel enhanced high-performance high-capacity baseband processing board
Port Density & Specs
High-performance quad-core DSP matrix baseband processing unit
Supported Chassis
ZTE ZXSDR B8200 / B8300 series baseband subracks
Subscriber Capacity
Designed for high-load base stations in dense urban areas and multi-sector high-traffic computing
Typical Power Consumption
< 75 W
Operating Temperature
-10°C ~ +55°C

Alarms & troubleshooting

OPT_LOS (Optical RX Loss of Signal Alarm)
Panel ALM LED solid red, faulty optical port L/A LED off
Fiber link break, excessive attenuation between baseband board and RRU/AAU, peer SFP transmitter failure, or local SFP receiver fault dropping RX optical power below threshold.
1. Measure the RX optical power at the BPQ0 port with an optical power meter (-14 dBm to -1 dBm nominal); 2. Clean the LC fiber connectors and SFP optical bore using lint-free cleaning tools; 3. Check peer RRU/AAU operational status and laser enable state in EMS/LMT; 4. If RX power is normal but alarm persists, reseat or replace the SFP module on the BPQ0 board.
SFP_TEMP_HIGH (SFP Module High Temperature Alarm)
Panel ALM LED flashes amber slowly (0.5Hz), traffic LED normal
BBU subrack fan failure, clogged dust filter, high ambient room temperature, or internal TEC degradation causing SFP DDM temperature to exceed safe threshold (>75°C).
1. Verify BBU fan tray speed and operating status, clean or replace clogged air filters; 2. Inspect equipment room HVAC to ensure cabinet inlet temperature is within +15°C to +35°C; 3. Query BPQ0 SFP DDM real-time temperature metrics via LMT/EMS; 4. If only one module exhibits abnormal temperature under normal airflow, replace the faulty SFP module during a maintenance window.
SFP_TX_BIAS_HIGH (Laser Bias Current High Alarm)
Panel ALM LED solid amber, optical port L/A LED solid green
Transmitter laser diode (LD) aging or internal driver circuit degradation in the SFP module causing continuous rise of bias current beyond safe operational threshold (>80mA).
1. Execute DDM diagnostics command via EMS/LMT to query the exact Tx Bias Current value; 2. Verify if optical transmit power (Tx Power) exhibits a concurrent abnormal decline; 3. Check that the board's slot voltage supply to the SFP cage is stable (+3.3V DC); 4. Treat as an impending transmitter failure: plan an operational window to replace the degraded SFP transceiver.
CPRI_SYNC_ERR (CPRI/eCPRI Frame Desynchronization & High BER Alarm)
Panel ALM LED flashes red (2Hz), port L/A LED toggles green/amber
Optical RX power operating on sensitivity boundary causing burst errors, excessive dispersion on long fiber run, clock sync jitter, or CPRI/eCPRI protocol frame sync decoding errors.
1. Query CRC error statistics and 8B/10B or 64B/66B line code violation counters in EMS; 2. Inspect optical link budget to guarantee at least 3 dB margin above receiver sensitivity; 3. Perform optical loopback test (local/remote) to isolate whether fault lies on BPQ0, fiber link, or AAU; 4. Check BBU master clock reference status, relock synchronization, and replace the SFP+ transceiver if jitter originates from the module.
SFP_TYPE_MISMATCH (SFP Transceiver Rate/Type Mismatch Alarm)
Panel ALM LED solid amber, faulty optical port L/A LED solid amber or off
Inserted SFP rate/type mismatches BPQ0 port configuration (e.g. 10G SFP+ installed in a 25G eCPRI port, wavelength mismatch 1310nm vs. 1550nm/BiDi), or non-ZTE certified module installed.
1. Read the SFP electronic label (E-Label) via LMT to verify form-factor, wavelength, and line rate (9.8G/10.3G/24.33G/25.78G); 2. Check peer RRU/AAU optical transceiver specs and BiDi wavelength pairing (e.g., TX1270/RX1330); 3. Verify BPQ0 port rate profile configuration in EMS to ensure it matches the physical module; 4. Replace with a ZTE-qualified industrial-grade SFP+/SFP28 transceiver matching exact rate and wavelength requirements.

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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