Dagama SG-959 GPS Receiver is a high sensitivity, low power GPS receiver that can communicate with other host devices via RS-232 serial port or universal USB interface. Using low-power technology, the receiver can track up to 20 satellites simultaneously and has an extremely fast TTFF (Time to First Fix), re-acquisition time less than 1 second (average), and data update rate of 1 second once.
The Dagama SG-959 is a compact, waterproof GPS receiver that uses a low‑noise SiRF StarIII chip to track up to 20 satellites. It is designed for vehicle navigation, mapping and surveying, and can communicate via RS‑232 or USB interfaces.
The manual covers an introduction, hardware dimensions and connectors, driver installation for Windows, operation with the GPS Viewer software, LED status indicators, data output formats, and warranty information. It also includes NMEA and SiRF binary message specifications for developers. This manual is written in Chinese.
| Frequency | L1 1575.42 MHz |
|---|---|
| Channels | 20 |
| Sensitivity | -159 dBm (typical) |
| Position accuracy | 5‑25 m (normal) |
| Vertical accuracy | <5 m (WAAS/EGNOS corrected) |
| Horizontal accuracy | <2 m (WAAS/EGNOS corrected) |
| Input voltage | 5.0 V ± 5 % |
| Supply current | 80 mA @5 V |
| Operating temperature | -40 °C ~ +80 °C |
| Dimensions | 59.7 mm × 39 mm × 16.4 mm |
| Supported protocols | NMEA‑0183, SiRF binary |
Insert the driver CD, open the “USB Driver” folder and run the PL‑2303 driver to install it.
A steady LED means the unit is powered and initializing; a blinking LED (0.5 s) indicates the receiver has a position fix.
The product has a 1‑year free warranty, with an optional 90‑day extension if registered within 15 days of purchase.