LC29T Evaluation Board Description
Quectel LC29T (AA) is a high-precision, multi-constellation GNSS module designed to deliver reliable timing and positioning in demanding applications worldwide. It simultaneously receives and tracks the L1 frequency band from multiple GNSS constellations (GPS, BDS, GLONASS, Galileo, and QZSS). The module’s timing functionality remains available even when only a single satellite is being tracked. Internal AEC‑Q100–qualified silicon and strict manufacturing/testing control ensure consistent, high-quality performance.

LC29T Evaluation Board Features
Parameter
Value
Region
Global
Module Dimensions
12.2 mm × 16.0 mm × 3.1 mm
Operating Temperature
-40 °C to +85 °C
Storage Temperature
-40 °C to +90 °C
Supported Bands
GPS L1 C/A, QZSS L1 C/A, Galileo E1: 1575.42 MHz
GLONASS L1: 1598.0625–1605.375 MHz
BDS B1I: 1561.098 MHz
Default Constellations
GPS + BDS + Galileo + QZSS + GLONASS
Number of Channels
80 Tracking Channels
4 Fast Acquisition Channels
Number of Concurrent GNSS
4 + QZSS
SBAS
WAAS, EGNOS, MSAS, and GAGAN
Horizontal Position Accuracy (Autonomous)
1.1 m (CEP, 50%)
Timing Accuracy
< 6 ns @ 1σ
Time Pulse Signal
Frequency: 10 MHz ± 0.05ppm
Jitter: 6 ns
TTFF (with AGNSS)
Warm Start: 1.6 s
TTFF (without AGNSS)
Cold Start: 35 s
Warm Start: 24 s
Hot Start: 2 s
Sensitivity (@ Default Constellations)
Acquisition: -145 dBm
Tracking: -161 dBm
Reacquisition: -154 dBm
Regulatory
Europe: CE*
Others: RoHS
UART
Adjustable: 115200–921600 bps
Default: 115200 bps
Update Rate: 1 Hz (default), up to 10 Hz
Protocol
NMEA 0183 V4.11
External Antenna Interface
Antenna Type: Active
Antenna Power Supply: External or Internal (through VDD_RF)
Supply Voltage Range
3.0–3.6 V, Typ. 3.3 V
I/O Voltage
Typ. VCC
Current Consumption (@ Default Constellations, 3.3 V)
Normal Operation: 222 mA @ Acquisition; 232 mA @ Tracking
Power Saving Mode: 55 μA @ Backup mode
LC29T Evaluation Board Applications
- Precision timing for telecommunications and wireless infrastructure
- Timing and synchronization in critical systems (network timing, base stations)
- Positioning and timing for automotive and industrial systems
- Any GNSS-enabled equipment requiring robust interference resistance and fast acquisition
LC29T Evaluation Board (EVB) benefits
An evaluation board for the LC29T (AA) lets you integrate, test, and validate the module quickly without designing a custom PCB first. The EVB simplifies development and speeds time-to-prototype by providing breakouts, power management, antenna interfaces, and example connections/firmware. Other benefits include easier signal debugging, access to the module’s timing/PPS outputs for system integration, and reduced risk in early-stage design—helping you design faster and with greater confidence.










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