Chonghan CH-D3 Series, Руководство пользователя

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CAI JINYONG
2018-3-30
CHONGHAN CH-D3 WIRELESS DTU USER MANUAL
页
8
1.4. Products List
Product Description
CH-D3G2Q2 GPRS GSM850
，
EGSM900
，
DCS1800
，
PCS1900
RS-232/RS-485/TTL
CH-D3G7M5 LTE
GPRS/EDGE 900/1800MHz
CDMA 1X/EVDO BC0
TD-SCDMA:B34/B39
FDD-LTE:B1/B3/B8
TDD-LTE:B38/B39/B40/B41
UMTS/HSDPA/HSPA+:B1/B8
RS-232/RS-485/TTL
CH-D3G7Z19 LTE GSM: B3, B8
TD-SCDMA: B34/B39
FDD-LTE :B1/B3
TDD-LTE :B38/B39/B40/B41
CDMA 1X:800M
CDMA EVDO: 800M
WCDMA: B1 RS-232/RS-485/TTL
1.5. Presentation Rules
The AT+I commands ignore case. For recognizable, the lowercase for input and uppercase for
respond. For example:
at+i<cr> // input command
I/OK // device response
1.6. Character Type
The send mode support all character send and receive, other mode only below valide:
Type Value Describe
Printable 0x20 ~ 0xFE <0x20> … <0xFE>
Carriage Return 0x0D <cr>
Line Feed 0x0A <lf>
Submit 0x1A <Ctrl+z>
Escape 0x1B <Esc>
1.7. AT+I Command Syntax
at+ixxxx=?<cr> // returns the list of
parameters and value ranges
at+ixxxx=<…><cr> // sets user-definable parameter
values
at+ixxxx?<cr> // returns the currently set
value
at+ixxxx<cr> // execution command