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AT Commands Reference Manual - wireless netcontrol GmbH

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Chapter 3: <strong>AT</strong> <strong>Commands</strong> <strong>Reference</strong><br />

Antenna Type Change of State Delay of ANT_DET Pin<br />

HIA (High Impedance) N => D or D => N Delayed<br />

N => G or G => N<br />

D => G or G => D<br />

Immediate<br />

Immediate<br />

Command<br />

Type Syntax Response/Action Remarks<br />

Execute <strong>AT</strong>S97 OK Deprecated; Implemented only for<br />

backward compatibility with older<br />

Motorola modules.<br />

Read <strong>AT</strong>S97? <br />

OK<br />

or:<br />

+CME ERROR: <br />

The Read command indicates antenna<br />

connection status.<br />

Note: When antenna type is unknown (factory default state), an error will be returned to read<br />

command.<br />

The following table shows the <strong>AT</strong>S97 parameters.<br />

Table 3-123: <strong>AT</strong>S97 Parameters<br />

<br />

Description<br />

000 The antenna is not connected<br />

001 The antenna is connected<br />

002 The antenna is grounded<br />

Example<br />

// Connect the antenna<br />

<strong>AT</strong>S97?<br />

001<br />

<strong>AT</strong>S97<br />

OK<br />

<strong>AT</strong>S97=?<br />

ERROR<br />

// Disconnect the antenna<br />

<strong>AT</strong>S97?<br />

000<br />

April 15, 2010 H24 - <strong>AT</strong> <strong>Commands</strong> <strong>Reference</strong> <strong>Manual</strong> 3-193

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