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ARC CDL

ARC CDL--900

900

Cellular modem

and Transceiver

ARC Electronics

ARC Electronics

1800

1800 --926

926 --0226 / 281

0226 / 281 --392

392 --6333

6333

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Summary of Contents for CDL-900

Page 1: ...ARC CDL ARC CDL 900 900 Cellular modem and Transceiver ARC Electronics ARC Electronics 1800 1800 926 926 0226 281 0226 281 392 392 6333 6333 ...

Page 2: ......

Page 3: ...t Wireless Access Solution Table of Contents 1 Product Overview 2 2 Registering the CDL 900 3 3 Starting and Configuring the CDL 900 3 4 Theory Of Operation 4 5 Supported AT Commands 7 6 Quick trouble shooting hints 8 7 Frequently Asked Questions FAQs 8 ...

Page 4: ...elligent systems Sample Application Areas Although any application requiring Data Communications can use the CDL 900 the following are the areas where our OEM customers are using the CDL 900 Packet Data Radio SCADA and Telemetry Systems Remote gas water electric meter readings Factory Automation systems Vending Machines Specifications Air Speed upto 9600 bps DTE Rate 300 1200 2400 9600 19200 57600...

Page 5: ...lectronic Serial Number number located on the label at the top of your unit 3 Inform the cellular operator that the unit is an AMPS Analog unit with a power rating of class 3 power 600 mw The cellular operator will register your unit and provide you the following information a MIN Mobile Number Number b System preference A or B c SID System ID It is recommended that you note the MIN and SID on the...

Page 6: ...0 switch settings f Click OK 8 Select Call Disconnect 9 Select Call Connect The TR Terminal Ready light on the CDL 900 should turn ON If it does NOT turn ON please check that the CDL 900 is connected to the right serial port on the PC 10 Select File Properties Settings ASCII setup 11 Check the following a In the ASCII Sending field check Echo typed characters locally b In the ASCII receiving field...

Page 7: ...ssumes the Command state when it is turned ON In this state you can configure the unit for a particular application In the Command State all inputs from the PC are treated as commands Command guidelines Command line is a string of characters sent from the DTE example PC when the unit is in the Command state All commands must adhere to the following guidelines Command lines must have a prefix a bod...

Page 8: ... communication On line state In online state input s from the PC is treated as data to be shipped over the airwaves and input s from the airwaves is treated as received data from the remote end The CDL 900 is in online state in one of the two conditions a CDL 900 dials out and a successful connection is established b CDL 900 answers an incoming call and a successful connection is established When ...

Page 9: ...it back into online state 3 ATDT XXXX CR Cell modem dials out XXXX is the phone number 4 AT TEST CR Puts the unit in test mode The commands AT SYS AT MIN AT SID and AT ID can be entered only when the unit is in Test Mode 5 AT SYS xx CR Sets system preference SYS 00 sets the unit for system B only SYS 01 sets the unit for system A only SYS 02 is for normal mode SID determines preferred system SYS 0...

Page 10: ... escape sequence 21 Escape sequence OK Basic Troubleshooting 1 If the unit draws too much power Please ensure that the correct power supply is used and correctly wired 2 If dialing out is repeatedly unsuccessful and modem gives the message NO DIALTONE please check if service is available 3 If the unit never connects on dialing out please ensure that the ESN Electronic Serial Number and the MIN num...

Page 11: ... 15 dbm and 20 dbm Rockwell based modem designs generally meet these requirements For Rockwell based modems please try the following commands on the land line modem AT SEC 1 18 CR This will enable MNP 10 and set transmit level to 18 dbm AT MS 11 1 1200 4800 W W1 CR Sets the modem to communicate between 1200 and 4800 bps ATS91 15 CR 6 Question Is there any simple way to avoid frequent loss of conne...

Page 12: ...0 2400 1200 2400 CR Speed and Flow Control Switch Settings To select a given speed put the switch for that speed down the on state use only one switch to select that speed For Hardware flow control H W use Switch 7 down is the on state Software Flow Control S W use Switch 8 down is the on state ...

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Page 14: ...uired between the commands When a carriage return is received the commands are performed in the order in which they are sent to the modem If more than 40 characters are sent to the modem an error occurs and all commands must be re entered A common configuration for a remote modem is to answer the call and hang up on loss of carrier To do this the RS232 interface has to be set for the correct confi...

Page 15: ...o F0 Select auto detect mode equivalent to N1 F1 Select V 21 or Bell 103 F2 Reserved F3 Select V 23 line modulation F4 Select V 22 or Bell 212A 1200 bps line speed F5 Select V 22 bis line modulation F6 Select V 32 bis or V 32 4800 line modulation F7 Select V 32 bis 7200 line modulation F8 Select V 32 bis or V 32 9600 line modulation F9 Select V 32 bis 12000 line modulation F10 Select V 32 bis 1440...

Page 16: ...rn speaker on during handshaking and turn speaker off while receiving carrier M2 Turn speaker on during handshaking and while receiving carrier M3 Turn speaker off during dialing and receiving carrier and turn speaker on during answering N0 Turn off automode detection N1 Turn on automode detection O0 Go on line O1 Go on line and initiate a retrain sequence P Force pulse dialing Q0 Allow result cod...

Page 17: ...basic call progress result codes and connections speeds i e OK CONNECT RING NO CARRIER also for busy if enabled and dial tone not detected NO ANSWER CONNECT XXXX and ERROR X3 Report basic call progress result codes and connection rate i e OK CONNECT RING NO CARRIER NO ANSWER CONNECT XXXX BUSY and ERROR X4 Report all call progress result codes and connection rate i e OK CONNECT RING NO CARRIER NO A...

Page 18: ...dem performs soft reset Q2 Q The modem hangs up F0 Restore factory configuration 0 F1 Restore factory configuration 1 G0 Disable guard tone G1 Disable guard tone G2 Enable 1800 Hz guard tone J0 Set S Register response only for compatibility J1 Set S Register response only for compatibility K0 Disable DTE DCE flow control K3 Enable RTS CTS DTE DCE Hardware flow control K4 Enable XON XOFF DTE DCE So...

Page 19: ...1 make break P3 Set 20 pps pulse dial with 33 67 make break Q0 Select direct asynchronous mode Q1 Select sync connect with Async off line command mode Q2 Select sync connect with Async off line command mode and enable DTR dialing of directory zero Q3 Select sync connect with Async off line command mode and enable DTR to act as Talk Data switch Q4 Select Hayes AutoSync mode Q5 Modem negotiates an e...

Page 20: ...iming for the transmit clock X2 Select slave receive timing for the transmit clock Y0 Recall stored profile 0 upon power up Y1 Recall stored profile 1 upon power up Zn x Store dial string x to 35 to location n 0 to 3 depending upon modem model E0 Disable line quality monitor and auto retrain E1 Enable line quality monitor and auto retrain E2 Enable line quality monitor and fallback fall forward L ...

Page 21: ...to remote modem immediately K4 5 Send break to remote modem in sequence with transmitted data When modem receives break from the remote modem K0 1 Clear data buffers and send break to DTE K2 3 Send a break immediately to DTE K4 5 Send a break with received data to the DTE M0 Select Answer Mode Lease Line with H1 active M1 Select Originate Mode Lease Line with H1 active N0 Select normal speed buffe...

Page 22: ...lugging it back in to ensure clean contact connections If the modem responds but characters are not displayed type ATEI CR This tells the modem to echo commands to the screen characters are displayed double type ATE CR This turns the echo feature off Modem does not answer If the modem does not answer an incoming call type ATSO I CR Check to make sure your terminal device has DTR high Modem will no...

Page 23: ...ttings of your communications software The most common settings are 7EI 7 bits even parity I stop bit and 8N 1 8 bits no parity I stop bit Modem connects but cannot communicate Another possibility is that your modem and software are set for different speeds In other words you will be unable to communicate at 2400 bps with modems linked at 1200 bps Check your speed settings Your modem disconnects D...

Page 24: ... TX Transmit Data CD Carrier Detect from remote modem RX Receive Data PWR Power Power connection looking from the connector side Positive is on the left power terminal Negative is on the right terminal 110VAC use DC Wall power cube ...

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