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PN1197-00 Revision 1.0
6 Device Attachment
RS-232 connection
The DART 200 has an RS-232 DB9 interface. If the remote device has a
similar interface, then any standard PC communications cable functions
as a connector between the two. Otherwise, refer to Data and control
interface, p. 8-14, for a discussion of the RS-232 leads and the minimum
number required for operation.
Standard RS-232 communications cables function properly for distances
up to 50 feet. If longer lengths are required, low loss RS-232 cable or
electronic cable extenders can be used; both are available from local
cable distributors or electronic catalogs.
Null modem function
The RS-232 interface specification was defined before the invention of
microcomputers. The original intent was to standardize the method that
computers and terminals used to communicate remotely over telephone
lines. The standard specification is generalized in Figure 6-1.
Figure 6-1. Standard RS-232 connection
The RS-232 standard specified the label Data Terminal Equipment or
Data Terminating Equipment (DTE) for terminals and computers, and
the label Data Communications Equipment (DCE) for modems. The
popularization of RS-232 serial communications resulted in many
different types of equipment, besides modems, that employ the standard.
Many manufacturers expect devices to connect directly to DTE
equipment (usually, PCs). Consequently, devices are designed with a
DCE interface, so a standard RS-232 cable meets the cabling
requirements. Common usage of RS-232 is shown in Figure 6-2.
RS-232
Computer
DTE
Terminal
Modem
Modem
RS-232
DTE
Phone
Line
DCE DCE
- DART 200 CDPD Modem 1
- Sierra Wireless, Inc. ii 2
- Important Notice 3
- Contact Information 3
- Safety and Hazards 3
- Sierra Wireless, Inc. iv 4
- Contents 5
- 2 Installation and Setup 2-1 6
- 3 CDPD Security Features 3-1 6
- 6 Device Attachment 6-1 7
- 8 Application Programming 8-1 7
- Sierra Wireless, Inc. viii 8
- PN1197-00 Revision 1.0 ix 9
- H Problem Sheet H-1 10
- Glossary Glossary-1 10
- Index Index-1 10
- Notes Notes-1 10
- PN1197-00 Revision 1.0 xi 11
- Sierra Wireless, Inc. xii 12
- About This Guide 13
- Related reading 15
- Compliances 16
- Safety information 17
- Sierra Wireless, Inc. xviii 18
- 1 Introduction 19
- New for this version 20
- Migration considerations 20
- CDPD network overview 21
- AT command set summary 22
- PN1197-00 Revision 1.0 1-5 23
- Sierra Wireless, Inc. 1-6 24
- 2 Installation and Setup 25
- Sierra Wireless, Inc. 2-2 26
- Getting started 29
- Basic modem personalization 30
- command, for 31
- AT&W 31
- command to check that 31
- Initial testing 32
- Sierra Wireless, Inc. 2-10 34
- Problem determination 36
- Sierra Wireless, Inc. 2-14 38
- Sierra Wireless, Inc. 2-18 42
- ENTER, the cursor returns 43
- Sierra Wireless, Inc. 2-20 44
- Basic communications 45
- Sierra Wireless, Inc. 2-22 46
- 3 CDPD Security Features 47
- Modem security management 48
- Sierra Wireless, Inc. 3-4 50
- 4 Broadcast and Multicast 51
- Operation 51
- Broadcast 52
- Multicast 52
- Multicast setup 53
- Sierra Wireless, Inc. 4-4 54
- 5 DART Supported Protocols 55
- Sierra Wireless, Inc. 5-2 56
- PN1197-00 Revision 1.0 5-3 57
- for UDP 59
- Sierra Wireless, Inc. 5-8 62
- How the UDP behaves 63
- Sample UDP server setups 65
- DART TCP capabilities 68
- Friends Only mode operation 68
- TCP communication 69
- Setup options 71
- *A (select server type) AT 71
- for TCP 72
- Sample TCP setups 73
- SLIP IP Address overview 78
- Class NEI SLIP Address 79
- provided it is not 81
- Telnet escape commands 84
- Sierra Wireless, Inc. 5-32 86
- 6 Device Attachment 87
- Sierra Wireless, Inc. 6-2 88
- Computer 88
- Terminal 88
- PN1197-00 Revision 1.0 6-3 89
- Sierra Wireless, Inc. 6-4 90
- 7 Vehicle Installation 91
- Considerations 91
- Proximity to other antennas 92
- PN1197-00 Revision 1.0 7-3 93
- Sierra Wireless, Inc. 7-4 94
- 8 Application Programming 95
- Application program structure 96
- Data transfer 97
- Modes of operation 97
- Error recovery 98
- &S0 (always active) 98
- Automatic registration 100
- Registration timer 101
- Manual registration 101
- Auto-Registration at power-on 101
- Data forwarding 102
- PN1197-00 Revision 1.0 8-9 103
- Sierra Wireless, Inc. 8-10 104
- Auto answer setup 105
- Flow control considerations 106
- PN1197-00 Revision 1.0 8-13 107
- PAD operating mode 108
- Data and control interface 109
- Binary data transfer 110
- Parity considerations 111
- PAD keep-alive considerations 112
- PN1197-00 Revision 1.0 8-19 113
- Command response options 114
- Echo option selection 115
- Baud considerations 116
- PN1197-00 Revision 1.0 8-23 117
- Modem dial directory 118
- Messages and response codes 119
- Sierra Wireless, Inc. 8-26 120
- A Limited Warranty and 121
- Sierra Wireless, Inc. A-28 122
- B Product Specifications 123
- Sierra Wireless, Inc. B-2 124
- C Charts and Diagrams 125
- Sierra Wireless, Inc. C-2 126
- D SLIP Setup Examples 127
- Sierra Wireless, Inc. D-2 128
- Windows 95 129
- Sierra Wireless, Inc. D-4 130
- E S-Registers 131
- Sierra Wireless, Inc. E-2 132
- Register definitions 133
- PN1197-00 Revision 1.0 E-5 135
- • Value Baud: 135
- • Stop Bits: 135
- • Data Bits: 135
- PN1197-00 Revision 1.0 E-9 139
- Sierra Wireless, Inc. E-10 140
- PN1197-00 Revision 1.0 E-11 141
- PN1197-00 Revision 1.0 E-13 143
- Sierra Wireless, Inc. E-14 144
- F DART AT Command Set 145
- A/ Repeat 146
- A Answer Online 146
- D (cont.) 147
- E Command Mode Echo 149
- F Online Mode Echo 149
- H Hang-up (close connection) 149
- I Identify 149
- Q Quiet Mode 150
- V Verbose Result Codes 151
- Z Soft Reset 152
- &C Set DCD Operation 153
- &D Set DTR Operation 153
- &S Set DSR Operation 155
- &W Save Active Profile 156
- \J Restrict Channel Selection 157
- \J (cont.) 158
- \M Manual Transmit Control 158
- \N Set Side Preference 158
- \Q Set Flow Control Operation 160
- \S Set Subscriber Identity 161
- \T Automatic Transmit Control 162
- *A Select Server Type 162
- *K TCP PAD Keep-Alive 164
- *L Set Listen Port 165
- *P Ping Remote Host 166
- *R Automatic SLIP Mode 166
- *T Telnet Keep- Alive 167
- Service provider commands 168
- PN1197-00 Revision 1.0 F-25 169
- ^F Force PIN Usage 171
- ^S Set DART SLIP Address 173
- -L Lock on a Specific Channel 174
- G Loading DART 200 177
- Firmware 177
- Sierra Wireless, Inc. G-2 178
- H Problem Sheet 179
- Sierra Wireless, Inc. H-2 180
- Glossary 181
- A (cont.) 193
- C (cont.) 195
- M (cont.) 198
- S (cont.) 199
- T (cont.) 200
- W, X, Y, Z 201
- PN1197-00 Revision 1.0 203
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