The Trimble SPS781 and SPS881 integrated GPS receivers are lightweight, rugged receivers that are suitable for both base and rover applications. The receivers feature GPS full-circle carrier, GLONASS L1/L2 and SBAS for high-precision positioning. The SPS781 and SPS881 receivers also have an integrated battery and an integrated radio, making them convenient to use in the field.
This manual describes the Trimble SPS781 and SPS881 integrated GPS receivers, covering performance specifications, dimensions, weight, environmental ratings, power options, and communication interfaces. It also outlines upgrade paths, battery operation time, and regulatory certifications.
Key sections include unique performance indicators, mechanical specifications, power and battery information, communication ports (Lemo, RS‑232, Ethernet, Bluetooth, 450 MHz and 900 MHz radios), and compliance with MIL‑STD‑810F, FCC, CE, RoHS and WEEE standards. This manual is written in Chinese.
| Dimensions (SPS781) | 19 cm × 10 cm |
|---|---|
| Dimensions (SPS881) | 19 cm × 11.2 cm |
| Weight (receiver only) | 1.35 kg (2.97 lb) |
| System weight (receiver + controller + pole) | 3.7 kg (8.2 lb) |
| Operating temperature range | -40 °C to +65 °C |
| Storage temperature range | -40 °C to +75 °C |
| Ingress protection | IP67 (1 m immersion) |
| Battery | 7.4 V, 2.4 Ah rechargeable Li‑ion |
| Battery runtime (rover mode) | ≈5.5 h (temperature dependent) |
| Battery runtime (base mode) | ≈4.2 h (temperature dependent) |
| Update rates (SPS881) | 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz |
They have a built‑in rechargeable 7.4 V, 2.4 Ah lithium battery.
The devices operate from –40 °C to +65 °C.
The SPS881 can update at 1 Hz, 2 Hz, 5 Hz, 10 Hz, and 20 Hz.