This document introduces the functions and features of GR47/GR48 and how to use them.
The GR47/GR48 Integrator Manual is aimed at manufacturers, system integrators, application developers and other engineers who need to embed the GR47 or GR48 radio modules into machine‑to‑machine or man‑to‑machine communication systems. It outlines regulatory compliance, safety precautions, and the overall architecture of the devices.
The manual details the hardware interfaces, signal descriptions, mechanical dimensions, and connector pin‑outs, and includes a full developer’s kit guide with assembly instructions, firmware flashing, and example applications. Technical data sheets and compliance declarations are provided at the end of the document.
| Resolution | 8 bit |
|---|---|
| Nominal Step Size | 9.668 ± 0.1 mV |
| Accuracy | +3 LSB |
| Input Impedance | >1 MΩ |
| Conversion Time | <100 µs |
The devices are intended for manufacturers, system integrators, application developers and developers of wireless communications equipment.
GR47 operates in the E‑GSM900/GSM1800 bands, while GR48 operates in the GSM850/GSM1900 bands.
The micro‑controller sends AT commands to the radio device over an RS‑232 communications link.