User's Manual

Table Of Contents

H380-GL Hardware User Manual Page

3.7.1 W_DISABLE1#

The module provides hardware for switching on/off WWAN RF function signal, and this function can also

be controlled by AT command. The module enters Flight mode when switching off RF function.

W_DISABLE1# signal function is defined as follows:

W_DISABLE1# Signal

Function

High/Floating

WWAN function is on, the module exits Flight mode

Low

WWAN function is off, the module enters Flight mode

3.7.2 System Switching Control

The module supports switching between MBIM and ACM interfaces, which are respectively designed for

supporting Win8.1/Win10 and Android/Linux/Win7 systems. The detection of interrupt signal GNSS_IRQ

is used for achieving system function switching. GNSS_IRQ signal function is defined as follows:

GNSS_IRQ Signal

Function

High/Floating

Set the USB port of the module as MBIM interface to support

Win8.1/Win10 system

Low

Set the USB port of the module as ACM interface to support

Android/Linux/Win7 system

Note:



When starting up, the module switches MBIM and ACM interfaces by detecting GNSS_IRQ level,

the stability of GNSS_IRQ level shall be maintained in start-up process;

 After start-up, the module switches MBIM and ACM interfaces by detecting GNSS_IRQ

rising/falling edge, the filter time is 100ms. When the condition is met, the module will restart and

switch to another interface.

3.7.3 BODY SAR

H380 module supports BODY SAR function through DPR pin detection. DPR is at high level by

default, the AP pulls down the DPR when approaching human body is detected by using SAR Sensor

(distance sensor), then the module reduces the transmit power to a preset threshold value, decreasing

RF radiation on the human body. The preset threshold value can be set by the relevant AT command or

DPR Tool. DPR function is defined as follows:

DPR Signal

Function

High/Floating

The module maintains default transmit power

Low

Reduce the threshold value of maximum transmit power of the module