Manuale d’uso / di manutenzione del prodotto DART 200 CDPD Modem del fabbricante Sierra Wireless
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DART 200 CDPD Modem For CDPD Versions 1.0 and 1.1 User’s Guide Firmware Version 3.0.10 Revision 1.0 Part Number: 1197-00 January 1998.
DART 200 CDPD Modem User's Guide Sierra Wireless, Inc. ii ? NOTE: This guide provides the information necessary to program the Data Access Radio Transceiver (DART) 200 for operation on Cellular Digital Packet Data (CDPD) 1.0 or 1.1 networks. The factory default is for 1.
DART 200 CDPD Modem User’s Guide PN1197-00 Revision 1.0 iii Important Notice The Data Access Radio Transceiver (DART) can only be exported from the US, or re-exported to another country with the issuance of an export license from the US Government. Contact Sierra Wireless for more information.
DART 200 CDPD Modem User's Guide Sierra Wireless, Inc. iv.
DART 200 CDPD Modem User’s Guide PN1197-00 Revision 1.0 v Contents Figures xi Tables xii About This Guide xiii Who should read this guide xiii Skills required to use this guide xiii What is in this .
DART 200 CDPD Modem User's Guide Sierra Wireless, Inc. vi 2 Installation and Setup 2- 1 Field installation 2- 1 Physical installation considerations 2- 1 Antenna considerations 2- 2 Troubleshooting 2- 4 Getting started 2- 5 Modem setup 2- 5 Basic modem personalization 2 - 6 Selecting CDPD 1.
DART 200 CDPD Modem User’s Guide PN1197-00 Revision 1.0 vii DART TCP capabilities 5- 14 Friends Only mode operation 5- 14 TCP communication 5- 15 Setup options 5- 17 Sample TCP setups 5- 19 Remote T.
DART 200 CDPD Modem User's Guide Sierra Wireless, Inc. viii Auto-Registration/De-Registration at connection/disconnection 8- 8 Deregistration 8- 8 Data forwarding 8- 8 Manual transmit control 8- .
DART 200 CDPD Modem User’s Guide PN1197-00 Revision 1.0 ix A Limited Warranty and Service A-1 Limited warranty A-1 Service A-1 B Product Specifications B-1 Power requirements B-1 Mobile B-1 Stationa.
DART 200 CDPD Modem User's Guide Sierra Wireless, Inc. x G Loa ding DART 200 Firmware G-1 Firmware download procedure G-1 H Problem Sheet H-1 Glossary Glossary-1 Acronyms Glossary -1 Terms Glossa.
DART 200 CDPD Modem User’s Guide PN1197-00 Revision 1.0 xi Figures Figure 1-1. DART 200 front view 1- 1 Figure 2-1. Installing DART 200 with mounting bracket 2- 2 Figure 2-2. S-Register bit positions 2- 9 Figure 2-3. Viewing the network S-Register (S57) 2- 13 Figure 2-4.
DART 200 CDPD Modem User’s Guide Sierra Wireless, Inc. xii Tables Table 1-1. Basic AT command set 1- 5 Table 1-2. Service Provider AT command set 1- 6 Table 2-1. S-Registers above 100 2- 14 Table 2-2. Registration failure troubleshooting 2- 17 Table 3-1.
PN1197-00 Revision 1.0 About This Guide Who should read this guide This User’s Guide is designed to assist application software developers with setup, installation, testing, and design of applications for the Data Access Radio Transceiver (DART) 200.
DART 200 CDPD Modem User’s Guide About This Guide Sierra Wireless, Inc. xiv Chapter 6, Device Attachment, describes the RS-232 interface to the DART, what a null modem is, and how to determine if one is required. Chapter 7, Vehicle Installation, discusses the items to consider when installing the DART 200 in a vehicle.
DART 200 CDPD Modem User’s Guide About This Gui de PN1197-00 Revision 1.0 xv • Sample TCP setups , p. 5- 19 • Automatic SLIP restart bullet point, p. 5- 24 • Telnet operation, p. 5- 31 • Maximum packet size transmit control, p. 8- 9 • Escape transmit control , p.
DART 200 CDPD Modem User’s Guide About This Guide Sierra Wireless, Inc. xvi Compliances FCC This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits provide reasonable protection against harmful interference in residential installations.
DART 200 CDPD Modem User’s Guide About This Gui de PN1197-00 Revision 1.0 xvii Safety information A caution in the margin, as shown at the left or in the body of the text, denotes a procedure or practice if not performed correctly could result in loss of data, or damage to equipment.
DART 200 CDPD Modem User’s Guide About This Guide Sierra Wireless, Inc. xviii.
PN1197-00 Revision 1.0 1 Introduction Description The Data Access Radio Transceiver (DART ) 200, as shown in Figure 1 -1, is a wireless, multipurpose, programmable modem that provides reliable, cost effective mobile and fixed communications over the Cellular Digital Packet Data (CDPD ) network.
DART 200 CDPD Modem User’s Guide 1 Introduction Sierra Wireless, Inc. 1- 2 From a networking perspective, the modem has complete built-in Transmission Control Protocol (TCP ), User Datagram Protocol (UDP ), Serial Line Internet Protocol (SLIP ), and telnet protocols.
DART 200 CDPD Modem User’s Guide 1 Introduction PN1197-00 Revision 1.0 1- 3 Contacting your cellular carrier There are currently two cellular carriers in each market area: the A side carrier and the B side carrier. Each carrier can potentially install and enable CDPD on their cellular network.
DART 200 CDPD Modem User’s Guide 1 Introduction Sierra Wireless, Inc. 1- 4 3. Data packets are routed by the MDIS through the appropriate network to the Fixed End System (F-ES ), usually a host computer over a public or private data network. 4. If a response is required from the F-ES, the process is reversed.
DART 200 CDPD Modem User’s Guide 1 Introduction PN1197-00 Revision 1.0 1- 5 Do not enter an AT command that requires a parameter without using one, as the missing parameter defaults to zero. For example, if you entered ATN without a value in the range of 1 to 4, the command defaults to ATN0 .
DART 200 CDPD Modem User’s Guide 1 Introduction Sierra Wireless, Inc. 1- 6 Table 1-1. Basic AT command set (cont.) *C Enable/Disable SLIP TCP Header Compression *E Enable Network Connection with PIN.
PN1197-00 Revision 1.0 2 Installat ion and Setup Field installation Physical installation considerations The Data Access Radio Transceiver (DART ) 200 is designed for both stationary and mobile applications. The guidelines for modem installation are: • Environment - The standalone DART 200 is ruggedly constructed.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 2 Figure 2-1. Installing DART 200 with mounting bracket.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 3 Antenna considerations The DART 200 uses standard mobile cellular radio signal s and any standard cellular anten.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 4 Troubleshooting The DART 200 is thoroughly inspected during manufacturing.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 5 Getting started Before opening the DART 200 box, but preferably before it arrives, check that the following equipment is available: • A 12.0 V DC regulated power source with 2.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 6 2. To proceed, your PC must have the ASCII terminal emulation program installed and active, and be attached to the CDPD modem by the PC communications cable. To verify the setup, enter AT and press ENTER : an OK response should return.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 7 • Entering the IP Address with an AT^An.n.n.n. It defaults to being put into the first entry in the IP Address table (NEI 0).
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 8 Selecting CDPD 1.0 or 1.1 mode of operation DART firmware Version 3.0.1 and above can operate in either CDPD 1.0 or 1.1 mode; prior firmware versions support only CDPD 1.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 9 2. If the NEI information is correct, use AT&V to verify the side setting ( Nn ) and channel restrictions ( .
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 10 The values associated with the bit positions are listed below. Bit Position Value 0 1 1 2 2 4 3 8 4 16 5 32 6 64 7 128 For example, if register bits 0,3, and 5 are on, the register value would be 1+8+32=41.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 11 3. If the channel is not available for CDPD use, the DART continues searching, dropping the allowable signal le.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 12 3. If the CDPD channel’s BLER is acceptable, the DART acquires the power product, current CDPD operating parameters, and adjacent channel lists from the MDBS.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 13 • By viewing the Network Status Register (S-Register 57) with the AT&V command or the ATS57? command. This is the recommended method, because viewing S-Register 57 shows other useful information, as shown in Figure 2-3 Figure 2-3.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 14 If the problem persists after checking the above possibilities, try power cycling the modem.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 15 If the modem stabilizes for short periods before restarting the search, the AT&V + output shown in Table 2-1 can be useful. S-Register 102 contains the RSSI value in dBm.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 16 The bit definitions in Figure 2-5 are as follows: • Channel acquired indicator (bit 7) • Automatic registration switch (bit 5) • Registration indicator (bit 0) An odd value in S-Register 57 indicates a registered modem.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 17 5 NEI successfully registered The descriptions of S-Registers 56 and 126 usually give a good idea of what the problem is. The following section describes some of the most common conditions leading to registration failures.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 18 Table 2-2. Registration failure troubleshooting (cont.) Condition Result Code Solution Invalid IP Address 3 or 1 (on some systems) 1. If the side setting is OK, verify that the modem’s IP Address is correct, by using the ATS? command to view the IP Address.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 19 Table 2-2. Registration failure troubleshooting (cont.) Condition Result Code Solution Authentication (credentials) problem (cont.
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 20 Table 2-2. Registration failure troubleshooting (cont.) Condition Result Code Solution Power supply problem Not applicable The DART operates on a voltage of 11 to 16 VDC with a current rating of 2.
DART 200 CDPD Modem User’s Guide 2 Installation and Setup PN1197-00 Revision 1.0 2- 21 Basic communications The final step in the initial setup process is to confirm that the DART 200 can communicate with the network by performing a ping .
DART 200 CDPD Modem User’s Guide 2 I nstallation and Setup Sierra Wireless, Inc. 2- 22 If increasing the time-out period does not correct the time-out failures, the problem could be that the other device is not registered, or that the path to it is not operational.
PN1197-00 Revision 1.0 3 CDPD Security Features Airlink security The Cellular Digital Packet Data (CDPD ) network is a public wireless data communications service vulnerable to casual eavesdropping.
DART 200 CDPD Modem User’s Guide 3 CPDP Security Features Sierra Wireless, Inc. 3- 2 Modem security management Two types of modem security are provided for the DART 200 : • Personal Identification Number (PIN ) - Protects against unauthorized use of the CDPD network.
DART 200 CDPD Modem User’s Guide 3 CDPD Security Features PN1197-00 Revision 1.0 01/23/98 3- 3 Table 3-1. Key types (cont.) SPK Prevents unauthorized changes to the modems operating parameters. These include selected S-Registers as well as modem IP Addresses.
DART 200 CDPD Modem User’s Guide 3 CPDP Security Features Sierra Wireless, Inc. 3- 4.
PN1197-00 Revision 1.0 4 Br oadcast and Multicast Operation Overview Broadcast and multicast are Cellular Digital Packet Data (CDPD ) functions that support sending the same data to a large group of IP Address es with a single transmission to the CDPD network.
DART 200 CDPD Modem User’s Guide 4 Broadcast and Multicast Operation Sierra Wireless, Inc. 4- 2 Broadcast The Broadcast function is used on a geographic coverage basis.
DART 200 CDPD Modem User’s Guide 4 B roadcast and Multicast Operation PN1197-00 Revision 1.0 4- 3 Multicast setup For multicast set up the DART 200 with a multicast IP Address and an associated Group Multicast Identifier (GMID) , in addition to the normal IP Address, as follows: 1.
DART 200 CDPD Modem User’s Guide 4 Broadcast and Multicast Operation Sierra Wireless, Inc. 4- 4 Some software stacks, used when the DART 200 operates in Serial Line Internet Protocol (SLIP) mode, only receive broadcast messages (including multicast) on a specific IP destination address, specifically the point-to-point NEI.
PN1197-00 Revision 1.0 5 DART Supported Protocols U DP User Datagram Protocol (UDP) is the most basic transmission protocol provided by the Data Access Radio Transceiver (DART) 200 . It is a thin protocol, adding only a port specification to the underlying Internet Protocol (IP).
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 2 While UDP offers the possibility of using fewer data packets and less total bytes to implement an application than TCP, adding the features already described can consume some of these savings, and requires a major programming effort.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 3 Even though a successful ATDP command receives a CONNECT response a connection was not established.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 4 Because UDP is a connectionless protocol, a single M-ES can communicate with multiple M-ESs at the same time as long as timing considerations are closely followed.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 5 To set up the options, first, review Chapter 8, Application Programming, and the command descriptions in Appendix F, DART AT Command Set before setting the following parameters, then proceed to step 1.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 6 • Receive locking capability to allow the DART 200 to function as a UDP server by holding off incoming messages until the preceding message is answered • Eliminates the need for the M-ES and Host modems to use a common port number.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 7 • Receive locking • Backwards compatibility The details of these options follow.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 8 This feature is controlled by bit 1 of S -Register 82. The default is backward compatibility enabled (bit 1 = 1).
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 9 • The modem’s server listening port is disabled for the duration of any active client session.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 10 • The modem enters the online mode • The source address is saved • The datagram is passed to the MAS In the answering modes already discussed: 1. The modem accepts incoming UDP datagrams.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 11 Sample UDP server setups These settings give a general sense of the AT commands required to set up a DART 200 for a UDP application. All relevant AT commands are listed, including the defaults.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 12 Table 5-1. Remote UDP setup (cont.) AT Command Req Opt Def Description ATE0 O No command mode character echo A.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 13 Table 5-2. Host UDP setup AT Command Req Opt Def Description AT^Annn.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 14 TCP Transmission Control Protocol (TCP) is an advanced transmission protocol that adds substantial functionality to the underlying Internet Protocol it is built on.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 15 This bit is significant only when the TCP connection is established passively (server mode ).
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 16 5. The data packet is directed by the network routers to the appropriate port on the designated server.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 17 4. Once the data block is received it is ready for processing. Any necessary error-checking, resequencing, and so on, is handled by the TCP software and is not the responsibility of the MAS.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 18 Many of the following profile parameters apply and need to be evaluated before proceeding to step 1. Some need to be set to provide the proper application operating environment, and others can be allowed to default.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 19 4. In any TCP application where the remote system only operates in server mode , consider the use of the TCP keep-alive option ( *K ). It is possible for the central client system to fail after establishing a session with a remote server.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 20 Table 5-3. Remote TCP setup AT Command Req Opt Def Description AT^Annn.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 21 Host TCP setup The host (client) modem is set up to support polling of remote devices by the host computer. The host uses flow control and the data being sent is binary, not character data.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 22 Table 5-4. Host TCP setup (cont.) AT Command Req Opt Def Description AT*K0 D Use default - Keep-alives not nee.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 23 • TCP/IP keep-alives (*Kn) • TCP PAD operating mode (On) • Telnet keep-alives (*Tn) • Automatic trans.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 24 Automatic SLIP restart specifies that the DART 200 always enters SLIP mode following power on or modem reset. It lets Winsock applications rely on the modem always being in SLIP mode, particularly following a power off/on cycle.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 25 A simplified block diagram of a terminal connection to a CDPD network using the SLIP interface is shown in Figure 5-1.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 26 3. The DART (registered NEI ) IP Address is known to the network and is obtained from your service provider. This IP Address is set using the following service provider command: AT^An.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 27 SLIP initial testing After the IP Addresses are set, the SLIP setup is completed, and the modem has been put into SLIP mode, determine if your setup is correct and that you have network connectivity by pinging the network.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 28 Telnet The telnet capability within TCP/IP is designed to provide support for ASCII terminals to communicate with text-oriented server applications on host systems.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 29 • Data Forwarding Operation • Manual Transmit Control ( ATMn ) - Controls the use of the characters (specified in S-Registers 51 and 52 ) for data forwarding while in online mode .
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 30 • Terminal Emulation Negotiation - S-Register 78 determines the terminal emulation type to offer first when negotiating with the telnet host system.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols PN1197-00 Revision 1.0 5- 31 New for this version The telnet binary mode ( Bn ) was removed from the AT command set, because a telnet remote login session should not be started with this function enabled.
DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols Sierra Wireless, Inc. 5- 32.
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.
DART 200 CDPD Modem User’s Guide 6 Device Attachment Sierra Wireless, Inc. 6- 2 Figure 6-2. Stand-alone RS-232 The problem with this occurs when modems are inserted between the DTE and a remote device with a DCE interface. The modem expects to communicate with a DTE interface.
DART 200 CDPD Modem User’s Guide 6 Device Attachment PN1197-00 Revision 1.0 6- 3 To identify this problem connect a PC directly to the device and establish communication. If communication is established, the device uses a DCE interface and requires a null modem to communicate with the DART 200.
DART 200 CDPD Modem User’s Guide 6 Device Attachment Sierra Wireless, Inc. 6- 4.
PN1197-00 Revision 1.0 7 Vehicle Installation Considerations Electrical transients When a Data Access Radio Transceiver (DART) 200 is installed in a vehicle it is usually powered from the vehicle’s electrical system.
DART 200 CDPD Modem User’s Guide 7 Vehicle Installation Considerations Sierra Wireless, Inc. 7- 2 The application program in the MAS has no way of knowing before attempting a send or receive operation if the modem is still in online mode .
DART 200 CDPD Modem User’s Guide 7 Vehicle Installation Considerations PN1197-00 Revision 1.0 7- 3 In this situation, separate the antennas as far as possible and then run a field test when the two-way radio is also being used. If the DART 200 works satisfactorily you do not have a problem, but if it does not filtering is required.
DART 200 CDPD Modem User’s Guide 7 Vehicle Installation Considerations Sierra Wireless, Inc. 7- 4.
PN1197-00 Revision 1.0 8 Application Programming The Data Access Radio Transceiver (DART ) 200 offers built-in Transmission Control Protocol (TCP), User Datagram Protocol (UDP), Serial Line Internet Protocol (SLIP), and telnet support, but most end -user application programming that interacts with the modem uses TCP, UDP, or SLIP.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 2 Device drivers The DART 200 requires no special device drivers.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 3 4. For a modem functioning as a server, (answering calls or being polled) activate the appropriate server, TCP (with AT*A1 ) or UDP (with AT*A2 ).
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 4 Error recovery Good application design includes provisions for handling errors.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 5 With three variables and only two signal lines, decide which two of the three items are most crucial to the application. Usually, RF in range and registration state are tracked.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 6 70 Network is unreachable 71 Network dropped connection or reset 72 Software caused connection abort 73 Connecti.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 7 • Manual registration • Automatic registration at power-on • Automatic registration whenever the modem is not registered • Automatic registration when connection originates These options are described in detail after Registration Timer .
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 8 Auto-Registration when not registered This function is the same as Auto-Registration at power-on, except that in addition to executing ATR4 command, the timer value is set to zero.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 9 Manual transmit control This feature ( ATMn) controls the recognition of data forwarding characters in the data stream by the packet assembler when in online mode .
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 10 Maximum packet size transmit control This feature is not under end-user control.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 11 Escape transmit control A default feature of the modem causing any data remaining in the packet buffer to be transmitted before the modem returns to command mode .
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 12 2. To use the ATA method, the MAS must have a device. Read command is pending on the COM port and issues an ATA command in response to the incoming Ring.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 13 Flow control and the new end-user Flow control often causes problems when applications are first online. Flow control is not operational when the modem is in command mode and not interacting with the CDPD network.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 14 Hardware flow control operation The DART 200 communicates with the MAS using the CTS lead (modem controlled) when receiving data, and sensing the RTS lead (MAS controlled) when sending data.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 15 Table 8-1. Telemetry options for PAD Mode Command Description O0 Select PAD Mode • F0 Local echo in online .
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 16 2. Is the modem still registered? 3. Does the modem still have an RF signal available? The DCD and the DSR lead.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 17 Flow control considerations Software Flow Control cannot be used.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 18 Bypassing character parity relies on the fact that the DART passes all 8 -bits if operating in 8N1 format, and does not autobaud or check character formats in online mode .
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 19 Shutting down a CDPD session in an orderly fashion after an abnormal termination at the F-ES side of the session, eliminates the possibility of the DART 200 having a half open TCP/IP connection, which usually requires a power cycle to clear.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 20 Escape sequence considerations The escape sequence is one of two ways the MAS forces the DART 200 to leave online or SLIP mode and return to command mode . The other is to drop the DTR line, as described in Escaping through the control interface, p.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 21 • Verbose Mode ( Vn ) - Controls whether the DART 200’s command responses are textual or numeric. The default is enabled ( V1 ). This is recommended for manual interaction with the DART 200, such as initial setup.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 22 Channel acquisition restrictions This feature of the modem limits the RF channels available for modem use. It is controlled by the ATJn command; one of the modem’s profile parameters.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 23 If the DART 200 is attached to a device that operates at a different speed or data format, an appropriate AT&L command, followed by an AT&W (to save the change) must be issued.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 24 1. If your application involves transmitting relatively large data files, test the data transfer using a variety of block sizes. Begin with the large blocks preferred by your customer.
DART 200 CDPD Modem User’s Guide 8 Application Programming PN1197-00 Revision 1.0 8 - 25 Entries with port numbers can be used as both ping targets and in the friends’ list.
DART 200 CDPD Modem User’s Guide 8 Application Programming Sierra Wireless, Inc. 8- 26.
PN1197-00 Revision 1.0 A Limited Warranty and Service Limited warranty Sierra Wireless, Inc. (Sierra Wireless) warrants your DART CDPD Modem model 200 against all defects in materials and workmanship .
DART 200 CDPD Modem User’s Guide A Limited Warranty and Service Sierra Wireless, Inc. A- 28 If you are having trouble with your modem, or to obtain warranty service or out-of warranty repair, please call Sierra Wireless Support (604.231.1100) between 8:00 am and 5:00 PM Pacific Time.
PN1197-00 Revision 1.0 B Product Specifications Power requirements Mobile 11.0 to 16.0 VDC; 13.8 VDC nominal operating voltage, +/- 1.0 V maximum ripple; maximum current 2.5 A; 3.0 A line fusing required. Stationary 120 VAC operation with optional UL/CSA approved AC power adapter Peak Transmit: 2.
DART 200 CDPD Modem User’s Guide B Product Specifications Sierra Wireless, Inc. B- 2 3 watts (maximum) Frequency range Transmit: 824 to 849 MHz, Receive: 869 to 894 MHz Data rates Airlink: 19,200 bi.
PN1197-00 Revision 1.0 C Charts and Diagrams Figure C-1 shows the hole pattern for the mounting bracket. Use a 4-40 machine screw, a 4-25 tapping screw, or a 0.125 DIA rivet to fasten the bracket. A flat washer is not required because the bracket is made of hardened steel, but a lock washer is required.
DART 200 CDPD Modem User’s Guide C Charts and Diagrams Sierra Wireless, Inc. C-2 The pin functions for pins labeled in Figure C-2 are listed in Table C -1 Table C-1.
PN1197-00 Revision 1.0 D SLIP Setup Examples Trumpet The Trumpet Winsock is a shareware Windows only package that is currently in widespread use. Support for it is available primarily through Internet E-mail and the USENET newsgroup at alt.winsock. Look for a file called winsock.
DART 200 CDPD Modem User’s Guide D SLIP Setup Examples Sierra Wireless, Inc. D - 2 To set up Trumpet: 1. Start Trumpet from Windows (Icon, or File/Run/TCPMAN). 2. On the Trumpet Winsock Screen, click on File then click on Setup. The Trumpet setup screen appears: 3.
DART 200 CDPD Modem User’s Guide D SLIP Setup Examples PN1197-00 Revision 1.0 D - 3 15. Put the DART into SLIP mode by entering an AT*S command. The ASCII terminal emulation program being used must be configured for the same speed as that set for the Trumpet baud rate or SLIP communication is not possible.
DART 200 CDPD Modem User’s Guide D SLIP Setup Examples Sierra Wireless, Inc. D - 4.
PN1197-00 Revision 1.0 E S-Registers The configuration of the DART is accessible to the Mobile Application Subsystem (MAS) as a set of parameters known as Status (S)-Registers. Some registers can be updated directly with AT commands, others are read-only.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 2 Registers 0 through 99 formats The AT&V command displays these registers as a group. Each S -Register is displayed as a three-position numeric field. The ATSn? command displays these registers individually, as three-digit numeric fields except for S-Register 53.
DART 200 CDPD Modem User’s Guide E S-Registers PN1197-00 Revision 1.0 E - 3 Register definitions Figure E-1 shows that in bitmapped registers bit 7 is the high order (leftmost) bit and bit 0 is the low order (rightmost) bit.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 4 Table E-2. Register summary (cont.) Register Value Default Description S14 (RO) (cont.
DART 200 CDPD Modem User’s Guide E S-Registers PN1197-00 Revision 1.0 E - 5 Table E-2. Register summary (cont.) Register Value Default Description S23 (RO) (cont.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 6 Table E-2. Register summary (cont.) Register Value Default Description S45 (SM) 0..255 50 Cell Change RSSI time period XID override (V1.0) (in 0.1sec) RSSI Average time period XID override (V1.
DART 200 CDPD Modem User’s Guide E S-Registers PN1197-00 Revision 1.0 E - 7 Table E-2. Register summary (cont.) Register Value Default Description S57 (RO) bitmapped 0 Network status 0,1 • Registr.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 8 Table E-2. Register summary (cont.) Register Value Default Description S60 (SM) (cont.
DART 200 CDPD Modem User’s Guide E S-Registers PN1197-00 Revision 1.0 E - 9 Table E-2. Register summary (cont.) Register Value Default Description S64 (SM) bitmapped 22 Value Function 0 1 Enable Rcv.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 10 Table E-2. Register summary (cont.) Register Value Default Description S81 (SM) bitmapped 0 Value Function 0 1 TCP Server specified via *A1 1 2 UDP Server specified via *A2 2-3 .
DART 200 CDPD Modem User’s Guide E S-Registers PN1197-00 Revision 1.0 E - 11 Table E-2. Register summary (cont.) Register Value Default Description S95 (SM) bitmapped 11 Value Function 0 1 Select CDPD version 1.1 MDLP/SNDCP 1 2 Select CDPD version 1.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 12 Table E-2. Register summary (cont.) Register Value Default Description S111 (RO) 0..FF (hex) Current Area/Cell Color code (0xnn format) S112 (RO) 0..100 Current Tx BLER in % S113 (RO) 0.
DART 200 CDPD Modem User’s Guide E S-Registers PN1197-00 Revision 1.0 E - 13 Table E-2. Register summary (cont.) Register Value Default Description S125 (RO) 0.
DART 200 CDPD Modem User’s Guide E S-Registers Sierra Wireless, Inc. E - 14.
PN1197-00 Revision 1.0 F DART AT Command Set AT command set usage AT commands can be concatenated (end-to-end or with a blank between commands) for up to a length of 80 characters including blanks.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 2 Table F-1. Commands beginning with letters A/ Repeat Repeats the last AT command.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 3 Table F-1. Commands beginning with letters (cont.) D (cont.) For a DART server the initial incoming datagram causes a RING message to be generated.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 4 Table F-1. Commands beginning with letters (cont.) D (cont.) Format: ATDPs s = destination address string plus optional modifiers Sn Follows the T or the P Dial modifier, or replaces the string in the AT*P (PING) command.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 5 Table F-1. Commands beginning with letters (cont.) E Command Mode Echo Controls the echoing of characters when the modem is in command mode.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 6 Table F-1. Commands beginning with letters (cont.) I (cont.) Result codes: OK Valid argument ERROR Invalid argument NOT ENABLED Must be in service provider mode O Enter Online Mode Instructs the DART to return to the online state.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 7 Table F-1. Commands beginning with letters (cont.) V Verbose Result Codes Selects whether the responses to modem commands use terse or verbose format.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 8 Table F-1. Commands beginning with letters (cont.) X Extended Result Codes Selects whether the DART enables extended result codes. By default all result codes are enabled.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 9 Table F-2. Commands beginning with ampersand (&) &C Set DCD Operation For serial ports, this command defines the usage of the data carrier detect (DCD) signal at the DART’s RS-232 interface.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 10 Table F-2. Commands beginning with ampersand (&) (cont.) &E Escape Code Recognition Allows the recognition of the escape character sequence to be enabled or disabled.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 11 Table F-2. Commands beginning with ampersand (&) (cont.) &L Set DART Line Speed and Format For serial ports, this command allows the Mobile Application Subsystem (MAS) to set the line speed and format.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 12 Table F-2. Commands beginning with ampersand (&) (cont.) &V View Active Profile and S-Registers Displays the active configuration of the DART modem.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 13 Table F-2. Commands beginning with ampersand (&) (cont.) &Z Save Addresses (Dial Directory) Allows the user to save commonly used IP addresses in a nonvolatile memory location <n>, where <n> can be from 0 to 9.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 14 Table F-3. Commands beginning with backslash () (cont.) J (cont.) Format: ATJ0 No restrictions on channel selection (default) ATJ1 LSAI (CDPD 1.0) or WASI (CDPD 1.1) mode .
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 15 Table F-3. Commands beginning with backslash () (cont.) N (cont.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 16 Table F-3. Commands beginning with backslash () (cont.) P Set PIN Requirement ; Change PIN Allows the user to require, not require, or change the modem’s PIN. The PIN is used as a password to prevent unauthorized access to the CDPD network.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 17 Table F-3. Commands beginning with backslash () (cont.) R (cont.) Format: ATR2 Register when connection is established, deregister when connection is terminated. Can be used only if the modem is operating as a client.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 18 Table F-3. Commands beginning with backslash () (cont.) T Automatic Transmit Control Enables the inter-character time-out data forwarding operation of the packet assembler in online mode.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 19 Table F-4. Commands beginning with asterisk (*) (cont.) *B Enable/Disable Reception of CDPD Broadcasts Enables or disables the reception of IP broadcast packets. Refer to Chapter 4, Broadcast and Multicast Operation, for more information.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 20 Table F-4. Commands beginning with asterisk (*) (cont.) *G SLIP Multicast Address Selection Permits the user to sp.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 21 Table F-4. Commands beginning with asterisk (*) (cont.) *K (cont.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 22 Table F-4. Commands beginning with asterisk (*) (cont.) *P Ping Remote Host Issues ICMP Echo Requests to a Remote Host and waits for a response. The wait time-out between pings and the packet size s defined by the values in S-Registers 70 and 71.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 23 Table F-4. Commands beginning with asterisk (*) (cont.) *S Initiate SLIP (Serial Line IP Mode) Session Initiates a SLIP session on the serial port. It is also used to return to SLIP mode following an escape.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 24 Table F-4. Commands beginning with asterisk (*) (cont.) *U Unblock Modem - PIN Access Can be used to unblock the modem if the PIN is forgotten or is entered incorrectly 3 times.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 25.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 26 Clearing BLOCKED status When the Service Provider key is BLOCKED and an AT^P+ command is issued, the modem waits 30 seconds before responding with the BLOCKED response.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 27 Table F-6. Service Provider commands beginning with caret (^) (cont.) ^F Force PIN Usage Enables the application developer to specify whether or not modem users require PINs.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 28 Table F-6. Service Provider commands beginning with caret (^) (cont.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 29 Table F-6. Service Provider commands beginning with caret (^) (cont.
DART 200 CDPD Modem User’s Guide F DART AT Command Set Sierra Wireless, Inc. F - 30 Table F-7 Service Provider commands beginning with dash (-) -L Lock on a Specific Channel Permits the DART to override normal Radio Resource Management functions and lock itself on a specific channel.
DART 200 CDPD Modem User’s Guide F DART AT Command Set PN1197-00 Revision 1.0 F - 31 Table F-7. Service Provider commands beginning with dash (^) (cont.) -Z Display Current Authentication Credentials A diagnostic aid when modem registration fails after it has previously been able to successfully register.
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PN1197-00 Revision 1.0 G Loading DART 200 Firmware Periodically, the DART 200 firmware needs to be updated, because of improvements to the DART’s capabilities, corrections for problems, or to keep pace with the evolving CDPD standard.
DART 200 CDPD Modem User’s Guide G Loading DART 200 Firmware Sierra Wireless, Inc. G - 2 • If you see an *A1 or *A2 in the modem’s active profile enter: AT*A0&W • If you see an *A0 , or do not see an *A at all, then proceed to step 4 4. Insert the download diskette into a floppy disk drive on your PC.
PN1197-00 Revision 1.0 H Problem Sheet If you are having trouble with your modem, please call Sierra Wireless Support (604.231.1100). If it is necessary to return the modem for repair, you will be given an RMA number and asked to fill out this form and return it with the modem.
DART 200 CDPD Modem User’s Guide H Problem Sheet Sierra Wireless, Inc. H - 2.
PN1197-00 Revision 1.0 Glossary Acronyms AMPS Advanced Mobile Phone System Original name given to the analog voice cellular telephone system. The standard for cellular telephone service in North and South America plus some Pacific rim countries. CDPD uses the same cells and RF channels as AMPS.
DART 200 CDPD Modem User’s Guide Glossary Sierra Wireless, Inc. Glo ssary- 2 CDPD Cellular Digital Packet Data Wireless radio frequency (RF) packet switched data communication services.
DART 200 CDPD Modem User’s Guide Glossary PN1197-00 Revision 1.0 Glossary- 3 DTE Data Terminal Equipment The official carrier name for the device (PC, MDT, RTU) attached to the modem (DCE). DTR Data Terminal Ready One of the RS-232 signal lines. Used to signal the modem (DCE) that the attached device (DTE) is ready to communicate (powered on).
DART 200 CDPD Modem User’s Guide Glossary Sierra Wireless, Inc. Glo ssary- 4 IEEE Institute of Electrical and Electronics Engineers A standards setting organization. IKE MDIS Key Exchange The MDIS initiated first step in exchanging encryption keys with the M-ES.
DART 200 CDPD Modem User’s Guide Glossary PN1197-00 Revision 1.0 Glossary- 5 M-ES Mobile End System Refers to the DART as a component in the CDPD network MDBS Mobile Data Base Station Cellular tower serving a specific geographical area. Communicates by radio with the DART and by landline, microwave, etc.
DART 200 CDPD Modem User’s Guide Glossary Sierra Wireless, Inc. Glo ssary- 6 PPP Point-to-point protocol An alternative communications protocol used between computers, or between computers and routers on the Internet. An enhanced SLIP. See also, SLIP.
DART 200 CDPD Modem User’s Guide Glossary PN1197-00 Revision 1.0 Glossary- 7 SIE Symbols In Error Count of how many 6-bit symbols (used by the FEC to organize the data stream) were in error in the last data block. See also, FEC. SIM Subscriber Identity Module.
DART 200 CDPD Modem User’s Guide Glossary Sierra Wireless, Inc. Glo ssary- 8 UA Unnumbered Acknowledgement The MDIS response to a SABME from the M-ES when a CDPD link is being established.
DART 200 CDPD Modem User’s Guide Glossary PN1197-00 Revision 1.0 Glossary- 9 baud A unit of signaling speed which represents the number of discrete conditions or signaling events per send that are transmitted or received over the link. The frequency at which the transmission medium is modulated.
DART 200 CDPD Modem User’s Guide Glossary Sierra Wireless, Inc. Glo ssary- 10 full duplex Communications operation where simultaneous two-way data transmission occurs across the data link. Devices using this method can send and receive at the same time.
DART 200 CDPD Modem User’s Guide Glossary PN1197-00 Revision 1.0 Glossary- 11 synchronous A method developed to transmit multiple characters (a data block) at one time. Each block of multiple 8-bit characters is preceded and followed by a synchronizing bit sequence to maintain character synchronization with the modem.
DART 200 CDPD Modem User’s Guide Glossary Sierra Wireless, Inc. Glo ssary- 12 wireline A communications link which does involve a hardwired connection.
PN1197-00 Revision 1.0 Index Symbols &C, 8-16 &C1, 8-4 &C4, 8-4 &D, 5-10, 5-24 &D0, 8-5 &D1, 8-5, 8-11 &D2, 8-5, 8-11 &Dn, 8-3 &E, 5-24 &E0, 8-20 &E1, 8-20 .
DART 200 CDPD Modem User’s Guide Index Sierra Wireless, Inc. Index- 2 A (cont.) ATR2, 8-8 ATR3, 8-8 ATR4, 2-13, 2-15, 8-7, 8-8 ATR5, 8-7 ATRn, 8-6 ATS, 5-26 ATS?, 2-6, 2-7, 2-8, 4-3, 5-26 ATS0=1, 5-.
DART 200 CDPD Modem User’s Guide Index PN1197-00 Revision 1.0 Index- 3 C (cont.) cellular antennas, 1-2 preferred, 2-5 requirements for DART 200, 2-3 cellular carriers contacting, 1-3 Wireless Data Forurm, 1-4 Cellular Digital Packet Data.
DART 200 CDPD Modem User’s Guide Index Sierra Wireless, Inc. Index- 4 D (cont.) DART 200 (cont.) registering, 5-15, 3-1 selecting ports to listen to with, 5-17 sending data to the MAS, 5-3 security,.
DART 200 CDPD Modem User’s Guide Index PN1197-00 Revision 1.0 Index- 5 G GMID, 2-6, 2-8, 4-3 defining, 4-3 field, 4-3 ground plane, 2-3 Group Multicast Identifier field. See GMID H host echo, 5-28 Hardware Flow Control, 8-13,8-14, 8-17 Hayes-compatible.
DART 200 CDPD Modem User’s Guide Index Sierra Wireless, Inc. Index- 6 M (cont.) messages broadcast, 4-1, 4-4 receiving, 4-2 DART 200, 8-25 encrypting, 4-1 error, 8-25 listening for incoming, 5-6, 5-18 multicast, 4-1, 4-2 starting with AT, 7-2 Mobile Application Subsystem.
DART 200 CDPD Modem User’s Guide Index PN1197-00 Revision 1.0 Index- 7 Q quiet mode, 8-12 definition, 8-20 R radio interference troubleshooting, 2-15 Receive Signal Strength Indication. See RSSI receive locking definition, 5-6 remote telemetry application setting up, 5-19 Remote Terminal Units.
DART 200 CDPD Modem User’s Guide Index Sierra Wireless, Inc. Index- 8 S (cont.) S-Registers, 2-5, 2-8, 2-9, 2-12, 2-13, 2-14, 2-15, 2-16, 2-17, 2-18, 2-20 13, 8-8 50, 2-3, 2-8, 2-9, 2-12, 2-13, 2-15.
DART 200 CDPD Modem User’s Guide Index PN1197-00 Revision 1.0 Index- 9 W, X, Y, Z WASI, 8-22 multiple entries for, 8-22 storing values for, 8-22 wide area service ID.
DART 200 CDPD Modem User’s Guide Index Sierra Wireless, Inc. Index- 10.
PN1197-00 Revision 1.0 NOTES __________________________________________________________ __________________________________________________________ _____________________________________________________.
DART 200 CDPD Modem User’s Guide Notes Sierra Wireless, Inc. Notes- 2 __________________________________________________________ __________________________________________________________ __________.
DART 200 CDPD Modem User’s Guide Notes PN1197-00 Revision 1.0 Notes - 3 __________________________________________________________ __________________________________________________________ ________.
DART 200 CDPD Modem User’s Guide Notes Sierra Wireless, Inc. Notes- 4 __________________________________________________________ __________________________________________________________ __________.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Sierra Wireless DART 200 CDPD Modem è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Sierra Wireless DART 200 CDPD Modem - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Sierra Wireless DART 200 CDPD Modem imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Sierra Wireless DART 200 CDPD Modem ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Sierra Wireless DART 200 CDPD Modem, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Sierra Wireless DART 200 CDPD Modem.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Sierra Wireless DART 200 CDPD Modem. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Sierra Wireless DART 200 CDPD Modem insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
