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72	72
73	73
74	74
75		-
76	76	== 1.3  Specification ==
77	77
78	78
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81	81	* Supply Voltage: 2.1v ~~ 3.6v
82	82	* Operating Temperature: -40 ~~ 85°C
83	83
84		-
85		-
86	86	(% style="color:#037691" %)**NB-IoT Spec:**
87	87
88	88	* - B1 @H-FDD: 2100MHz
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92	92	* - B20 @H-FDD: 800MHz
93	93	* - B28 @H-FDD: 700MHz
94	94
95		-
96		-
97	97	(% style="color:#037691" %)**Battery:**
98	98
99	99	* Li/SOCI2 un-chargeable battery
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102	102	* Max continuously current: 130mA
103	103	* Max boost current: 2A, 1 second
104	104
105		-
106		-
107	107	(% style="color:#037691" %)**Power Consumption**
108	108
109	109	* STOP Mode: 10uA @ 3.3v
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111	111
112	112
113	113
114		-
115		-
116	116	== ​1.4  Applications ==
117	117
118	118
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127	127	​
128	128
129	129
130		-
131		-
132	132	== 1.5  Pin Definitions ==
133	133
134	134
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138	138
139	139	= 2.  Use NDDS75 to communicate with IoT Server =
140	140
141		-
142	142	== 2.1  How it works ==
143	143
144	144
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212	212
213	213	[[image:image-20220709092052-2.png]]
214	214
215		-
216	216	**Connection:**
217	217
218	218	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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236	236
237	237	[[image:1657329814315-101.png]]
238	238
239		-
240	240	(((
241		-(% style="color:red" %)**Note: the valid AT Commands can be found at: **(%%)**[[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]**
	227	+(% style="color:red" %)Note: the valid AT Commands can be found at: (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/]]
242	242	)))
243	243
244	244
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270	270	[[image:1657330452568-615.png]]
271	271
272	272
273		-
274	274	(((
275	275	After configure the server address and (% style="color:green" %)**reset the device**(%%) (via AT+ATZ ), NDDS75 will start to uplink sensor values to CoAP server.
276	276	)))
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286	286	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
287	287	* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
288	288
289		-
290		-
291	291	[[image:1657330501006-241.png]]
292	292
293	293
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306	306	* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
307	307	* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
308	308
309		-
310		-
311	311	[[image:1657249978444-674.png]]
312	312
313	313
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326	326	* (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
327	327	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
328	328
329		-
330		-
331	331	[[image:image-20220709093918-1.png]]
332	332
333	333
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371	371
372	372	[[image:1657331036973-987.png]]
373	373
374		-
375	375	(((
376	376	The payload is ASCII string, representative same HEX:
377	377	)))
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416	416
417	417	(((
418	418	User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
419		-
420		-
421	421	)))
422	422
423	423	(((
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561	561
562	562	(((
563	563	The 5V output time can be controlled by AT Command.
564		-
565		-
566	566	)))
567	567
568	568	(((
569	569	(% style="color:blue" %)**AT+5VT=1000**
570		-
571		-
572	572	)))
573	573
574	574	(((
...	...	@@ -651,15 +651,16 @@
651	651
652	652
653	653	(((
654		-Download URL & Firmware Change log:  [[https:~~/~~/www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0>>https://www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0]]
	626	+Download URL & Firmware Change log
655	655	)))
656	656
657	657	(((
658		-
	630	+[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/]]
659	659	)))
660	660
	633	+
661	661	(((
662		-Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
	635	+Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
663	663	)))
664	664
665	665
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666	666
667	667	== 2.8  ​Battery Analysis ==
668	668
669		-
670	670	=== 2.8.1  ​Battery Type ===
671	671
672	672
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758	758
759	759	(((
760	760	The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]]
761		-
762		-
763	763	)))
764	764
765	765	[[image:1657333200519-600.png]]
...	...	@@ -768,11 +768,10 @@
768	768
769	769	= 4.  Using the AT Commands =
770	770
771		-
772	772	== 4.1  Access AT Commands ==
773	773
774	774
775		-See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]
	744	+See this link for detail: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:http://www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN50/]]
776	776
777	777
778	778	AT+<CMD>?  : Help on <CMD>
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848	848
849	849	= ​5.  FAQ =
850	850
851		-
852	852	== 5.1 ​ How to Upgrade Firmware ==
853	853
854	854
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868	868
869	869	= 6.  Trouble Shooting =
870	870
871		-
872	872	== 6.1  ​Connection problem when uploading firmware ==
873	873
874	874
...	...	@@ -937,6 +937,3 @@
937	937
938	938	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
939	939	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]]
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