Product overview
Shenzhen JND Technology Co., Ltd’s JND ST-26-U7L is a single-frequency, single-mode GPS/GNSS receiver module built around U-blox7. Its compact, single-sided surface-mount architecture supports incorporation into host electronics through a secondary SMT assembly scheme. The hardware includes a KDS 0.5PPM TCXO, an RTC crystal, an LNA and a SAW filter. Lead-free manufacture and RoHS compliance are specified. Optional built-in SPI FLASH provides configuration retention after power loss, so that feature depends on the selected module configuration.
Integration options include selectable UART / TTL and USB2.0 outputs, configurable NMEA 0183 V3.0 sentence combinations, and refresh rates from 1Hz-10Hz. The default data rate is 9600bps, with alternatives extending to 921600bps. Users can select walking, vehicle, static, portable or airborne modes and configure 2D or 3D positioning. AssistNow Online and Offline support assisted positioning, while satellite quality and drift-prevention settings provide further receiver controls. Supported integration uses include portable positioning equipment, vehicle tracking, surveying, route logging and UTC timing.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Shenzhen JND Technology Co., Ltd, JND ST-26-U7L |
| Product type | Single-frequency, single-mode receiver module |
| Receiver architecture and purpose | Compact GPS/GNSS receiver module based on U-blox7, intended for positioning, tracking and navigation; described as offering ultra-low power consumption and ultra-high sensitivity. |
| Mounting architecture | Single-sided surface mounting with a secondary SMT assembly scheme. |
| Manufacturing | Lead-free manufacturing; RoHS compliant. |
| Interfaces | UART / TTL and USB2.0 output options.Selectable output interfaces. |
| Reference oscillator | KDS 0.5PPM high-precision TCXO. |
| RF front end | Built-in LNA and SAW filter; described as supporting improved weak-signal reception and rapid positioning even with a passive antenna.Weak-signal reception, including use with a passive antenna. |
| Configuration retention | Optional built-in SPI FLASH retains configuration commands through power loss.Optional built-in SPI FLASH fitted. |
| Data output rates | 9600bps default; selectable rates: 1200, 2400, 4800, 19200, 38400, 57600, 115200, 230400, 460800 and 921600bps.9600bps is the default; other listed rates are selectable. |
| Output protocol and sentences | NMEA 0183 V3.0: GGA, GSA, GSV, RMC, VTG and GLL.Output sentence combinations are configurable. |
| RTC | Built-in RTC crystal. |
| Refresh rate | 1Hz-10Hz.Adjustable data refresh rate. |
| Satellite quality controls | Configurable satellite quality controls and software settings to prevent position drift. |
| Operating modes | Walking, vehicle, static, portable and airborne modes; configurable 2D and 3D positioning.User-selectable operating modes and positioning settings. |
| Positioning PPS indicator support | Supports a positioning PPS indicator with fix-dependent behavior.Before a position fix, the indicator remains on or off; after a fix, it flashes. |
| Assisted positioning | Supports A-GPS services including AssistNow Online and AssistNow Offline. |
| Navigation engine | GPS, GALILEO and SBAS hybrid engine; SBAS systems listed are WAAS, EGNOS, MSAS and GAGAN. |
| Integration applications | Personal positioning, vehicle navigation and tracking, PDA and Pocket PC devices, portable equipment, area and distance surveying, UTC synchronization and timing, route logging, GPS data-point calibration, driver alert devices and student safety cards. |
