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| TAC codes for Quectel EG91U (used in [[{{{model}}}]] products) are as follows:
| | == Race mode == |
| | [[File:ATX Race mode.png|thumb|right|500px]] |
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| <table class="nd-othertables_2" style="width:100%; border-collapse: collapse;">
| | Race Mode is an accuracy focused operating mode that controls periodic record timestamps strictly by GPS time (NMEA). It is designed to improve timestamp precision and prevent unexpected coordinate jumps during movement. |
| <tr>
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| <th style="width:25%; vertical-align: middle; text-align: center;">Production codes</th>
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| <th style="width:25%; vertical-align: middle; text-align: center;">Model</th>
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| <th style="width:25%; vertical-align: middle; text-align: center;">TAC</th>
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| <th style="width:25%; vertical-align: middle; text-align: center;">Image</th>
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| </tr>
| |
| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86634405</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86634405 page-0001.jpg|thumb|150px]]</td>
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| </tr>
| |
| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86445407</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86445407 page-0001.png|thumb|150px]]</td>
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| </tr>
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| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86837307</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86837307 page-0001.png|thumb|150px]]</td>
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| </tr>
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| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86373807</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86373807 page-0001.png|thumb|150px]]</td>
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| </tr>
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| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86107608</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86107608 page-0001.png|thumb|150px]]</td>
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| </tr>
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| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86132708</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86132708 page-0001.png|thumb|150px]]</td>
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| </tr>
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| <tr>
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| <td style="vertical-align: middle; text-align: center;">Quectel</td>
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| <td style="vertical-align: middle; text-align: center;">EG915U-EU</td>
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| <td style="vertical-align: middle; text-align: center;">86402208</td>
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| <td style="vertical-align: middle; text-align: center;">[[File:Quectel EG915U-EU TAC 86402208 page-0001.png|thumb|150px]]</td>
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| </tr>
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| </table>
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| | === Prerequisites and Important settings === |
| | Race Mode should be enabled only when short sending periods are used and high timestamp accuracy is required during movement. |
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| | === Basic operation === |
| | When Race Mode is enabled, periodic record generation is synchronized directly to GNSS time while the device is moving. Records are created only after the configured Min Saving Period elapses, using the timestamp provided by the GPS module together with all required GNSS data. |
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| You can the find PDF version of TAC: <br>
| | '''Compatibility conditions''' |
| TAC 86634405 '''[[Media:Quectel EG915U-EU TAC 86634405.pdf|here]]''',<br>
| | Race Mode is available only when all of the following conditions are met: |
| TAC 86774707 '''[[Media:Quectel EG915U-EU TAC 86774707.pdf|here]]''',<br>
| | * Location source is set to GNSS |
| TAC 86445407 '''[[Media:Quectel EG915U-EU TAC 86445407.pdf|here]]''',<br>
| | * Tracking mode is not Basic (for ATx mini devices) |
| TAC 86837307 '''[[Media:Quectel EG915U-EU TAC 86837307.pdf|here]]''',<br>
| | * Device is in a movement capable tracking mode (e.g. Movement mode) |
| TAC 86373807 '''[[Media:Quectel EG915U-EU TAC 86373807.pdf|here]]''',<br>
| | |
| TAC 86107608 '''[[Media:Quectel_EG915U-EU_TAC_86107608.pdf|here]]'''.<br>
| | === Limitations, Edge Cases & Additional Notes === |
| TAC 86132708 '''[[Media:Quectel_EG915U-EU_TAC_86132708.pdf|here]]'''.<br>
| | Race Mode operates only while device movement is detected. |
| TAC 86402208 '''[[Media:Quectel_EG915U-EU_TAC_86402208.pdf|here]]'''.<br>
| | If the device enters On Stop state, or if GNSS fix is lost, periodic records are generated using the standard flow: |
| | * Without GPS data |
| | * Without GPS based time synchronization |
