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Last modified by Kilight Cao on 2025/06/12 14:27
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1 **~ Table of Contents:**
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3 {{toc/}}
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8 = **1. Introduction** =
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11 This chapter describes how to set Transmit Time Interval.
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14 = **2. Set Transmit Time Interval** =
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17 TDC can be controlled by Downlink Payload.
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19 (((
20 **For example**: AT+TDC=0x258=600s ** ; Payload: **01 00 02 58 TDC=600s The time interval is represented by hexadecimal conversion to decimal.
21 )))
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23 [[image:image-20220527085044-1.png]]
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26 If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), 3C (HEX) = 60 (decimal)，while type code is 01.
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28 **Payload: **01 00 00 1E TDC=30s Payload: 01 00 00 3C TDC=60s
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30
31 == **2.1 Example Downlink payload setting in TTN:** ==
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33 [[image:image-20221110143023-2.png||height="632" width="808"]]
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35
36 == **2.1 Example of set the Transmit Time Interval using Bluetooth:** ==
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39 TDC can be controlled by Bluetooth.
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41 (% style="color:red" %)**Note: This feature is only available on devices that support Bluetooth sensors.**
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44 Here list the models that support BLE and the method to activate BLE function.
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46 (% style="color:blue" %)**Models:**(%%)** **All models with -LB, -LS , -NB, -NS, -CB, -CS suffix
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48 (% style="color:blue" %)**BLE Activate Method:**
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50 Device is battery power type and BLE will be only activate on below case:
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52 * Press button to send an uplink
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54 * Press button to active device.
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56 * Device Power on or reset.
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58 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
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60 Download link of dragino mobile app: **[[Mobile_APP>>url:https://www.dropbox.com/scl/fo/gyscmfn1s03oz3n8rif8w/AJW7JoMQsQ56dtlls2SNf9c?rlkey=3q2cxwriyzh26vuairx01yebc&e=1&st=be5jv92w&dl=0]]**
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62 Google Play Store: **[[DeviceTool.app>>url:https://play.google.com/store/apps/details?id=com.teyi.device.tool.app]]**
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65 For more detailed steps on how to use the dragino mobile app, please refer to the following link:  **[[BLE Bluetooth Remote Configure - DRAGINO>>url:https://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]**
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67 (% style="color:blue" %)**AT Command: AT+TDC**
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69 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:727.222px" %)
70 |(% style="background-color:#4f81bd; color:white; width:165px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:227px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:329px" %)**Response**
71 |(% style="width:165px" %)AT+TDC=?|(% style="width:227px" %)Show current transmit Interval|(% style="width:329px" %)30000(((
72 OK
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74 the interval is 30000ms = 30s
75 )))
76 |(% style="width:165px" %)AT+TDC=60000|(% style="width:227px" %)Set Transmit Interval|(% style="width:329px" %)OK(((
77 Set transmit interval to 60000ms = 60 seconds
78 )))
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80 For example, to change the packet sending interval to 12s, use the AT command: AT+TDC=12000
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82 [[image:1749708439295-260.png||height="742" width="334"]]
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84
85 = **3. Downlink Method** =
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88 See use  note for different serves [[Servers Note>>doc:Main.WebHome]](IoT LoRaWAN Server)
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