CH-D1 Wireless DTU Quick Start Guide is the quick start guide of Chonghan Wireless DTU series products. It mainly introduces the basic knowledge of DTU, test environment, test instructions, TCP communication mode, TCP client Serial N communication mode and other content.
The CH-D1 wireless DTU is a data‑transparent modem for serial industrial equipment. This quick start guide provides an overview of the device, safety notices, liability limits and basic operation steps to help users install and deploy the product quickly.
The manual describes AT command sets, configuration of TCP/UDP communication modes (long‑ and short‑connection, socket modes), baud‑rate settings, APN/VPDN parameters and hardware/software flow monitoring. It also lists supported cellular bands and provides troubleshooting tips. This manual is written in Chinese.
| Default baud rate | 9600 bps, 8N1 |
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Select the TCP client Serial Net long‑connection mode in the DTU configuration to establish a persistent TCP link.
The manual provides AT class commands and AT+i class commands for testing and configuring the device.