Programming and Using the Courier V
Contents
1. 8077 0 Figure 1 PHONE LINE DDF6077 Serial Expander PHONE LINE PHONE LINE Control Site Figure 2 To site 3 To site 1 DDF6OT DOF6OT Serial Serial Expander Expander To site 4 To site 5 To site 2 BOT 7 2 Figure 3 60771 3 0 Courier V Everything Modem This modem is suitable for use as either the calling or answering modem with either leased lines or standard dial up lines The following discussion assumes the standard external version of these modems For more information on this modem contact 3COM According to 3COM the modems must be identical and have the same internal software The following procedure will check that the configuration is the same 3COM also advises that the lines themselves should meet the following requirements The leased line should be an analog 2 wire full duplex line 3002 type D with no conditioning It must not be a 4 wire or digital line If the line is an actual dedicated line its length should be 5 miles or less If it is a true leased line with power provided by the telephone central office then there is no limit on the length Note that the cables and DIP switch settings used for modem setup are different from those used during normal modem operation with the DDF6000 4 0 Modem Setup 4 1 Modem to PC Cable Note the serial connector used on your PC It will be either a DE9 male or a DB25 male connector When setting up the modems y2. If you have set up the modems for dial up operation connect them to two separate phone lines with the answering modem connected to the one with the phone number programmed into the sending modem Use the RJ11 jacks marked Jack closest to the RS232 connectors on the modems Turn the modems on After a few seconds of handshaking the two modems will connect When this happens the CD OH MR and CS lights on both modems will be lit and the AA light will be lit on the answering modem Be sure that a plug is inserted in J4 on the DDF6000 to place it in the CIV mode Turn on the power to the direction finder with the plug installed To test the network you do not need to have a receiver or direction finder antenna connected You can place the direction finder in a self test mode by selecting from the front panel Sweep 0 Cal ON Sig 9 The DF should display a bearing When you finish these tests you can turn off the self test mode using the same command sequence Execute BrgTrack on the PC Check that the proper COM port has been selected Setup Serial Port then check that the DF address matches that of the DDF6000 connected The default value is 1 Select Setup Site Enable one site select Modify and set the DF id to the address of the DDF6000 If a CIV receiver is connected to the DDF6000 check that its address also matches that shown in the RX id field Select Locate on Map and be sure that the site location is shown somewh
3. 1 telephone cable Turn the modem power on wait a few seconds then type AT lt enter gt You should obtain the response OK from the modem 4 3 Check Modem Software Configuration Select Transfer Capture to Printer and type ATI7 lt enter gt The screen should fill with a listing of the modem software configuration Select Transfer Capture to Printer again This will cause the information on the screen to be printed Turn off the modem disconnect the RS232 cable connect the second modem to this cable and turn it on Repeat the above procedure to print out the software configuration Repeat for the other modems to be used in the DF network Compare the printed records The same information should appear in the Option line the Clock Frequency and the Supervisor Rev If the records are different you should update the software in one or more of the modems so that all versions are identical See the User manual and or contact 3COM for information on obtaining the latest software and installing it 4 4 Calling Modem with Leased Line Locate a modem that will be used at the PC a calling unit It is a good idea to mark this modem to distinguish it from the answering modems Connect it to the PC using the same setup described in section 4 3 Verify that the program is communicating with the modem by typing AT lt enter gt and seeing that the modem responds with OK Enter the following command line from the Hyper Terminal program AT am
4. COM port select DF serial port J1 select CIV protocol enter the current CIV address 1 unless you have already changed it and enter anything for the receiver CIV address Enter command 0 Bearing Data Rqst and verify that the a response message is received To change the CIV address enter command 4 from the Main menu to reach the RDF Address Menu enter the new CIV address then hit the ESC key twice to exit the program If you will be using CIV receivers at each site you need to also set unique addresses on these Refer to the ICOM receiver manual for instructions on setting the CIV addresses Connect the female connector on the serial data expander to the PC using the cable provided with it a six foot 3 conductor shielded DE9 male to DEY female and connect the calling modems to the male connectors on the serial data expander With BrgTrack in its off mode setup the CIV addresses for the direction finders and receivers at each site to match those connected to the network Turn all the direction finders and modems on and wait until all the modems are communicating properly as indicated by stable CD indications on the calling modems Now click on Run in BrgTrack You should see bearings displayed at each site assuming that all direction finders are still in the self test mode 6 0 Timing The following timing diagrams are provided as an aid in case you experience difficulty with communications after setting up the modems Figure 4 s
5. Programming and Using the Courier V Everything Modem for Remote Operation of DDF6000 A Technical Application Note from Doppler System July 5 1999 1 0 Introduction Version 3 x of the DDF6000 running version 2 x of the BrgTrack software allows one or more of these direction finders to be controlled remotely over leased telephone lines In the past radio modems were required for the purpose To check which firmware version you are using watch the front panel display of the DDF6000 during power turn on to check the software version use the Help About BrgTrack menu on the PC If you are going to need an upgrade see the Software amp Upgrade page on the web site or seek help from your local distributor or from the factory 2 0 Configuration A modem pair is required for each remote site The calling modem is located at the central control point where the PC running BrgTrack is located and the answering modem is located at the remote site If only one remote site is needed the PC s COM port will connect to the sending modem using a 3 wire serial cable as shown in Figure 1 If multiple sites are to be connected the Serial Expander DDF6077 should be used See Figure 2 A Serial Expander will interface a single PC COM port with up to three calling modems If more than three sites are to be connected multiple Serial Expanders may be used See Figure 3 The number of sites that may be connected using N Serial Expanders is equal to 2N 1
6. ere on the screen If a CIV receiver is not connected to the DF be sure that no channels are enabled Setup Channels Disable Now place BrgTrack in the RUN mode The RD and SD lights on both modems should blink and the BrgTrack screen should display a bearing To verify that the system will restart after a power failure turn the DDF6000 Off BrgTrack will display an error message Turn the DDF6000 back ON then click on Yes to restart BrgTrack s polling sequence Turn off the power on the answering modem BrgTrack will again display an error message and after brief interval the CD light on the calling modem will go off Turn the power back on and wait until the calling modem light returns to on This may take anywhere from a few seconds with a leased line connection to 15 or more seconds with a dial up line Now click the Yes button to restart BrgTrack Turn off the power on the calling modem turn it back on and wait for the CD light to indicate that the modems have reestablished communication Restart BrgT rack using the Yes button If you will be connecting to multiple sites repeat the above tests using the next modem pair 5 4 Testing Multiple Modem Connections Before testing multiple modems and DF s you need to set the addresses of each DDF6000 to a unique value using the RDFCMD program provided with the direction finders Connect a DDF6000 to the PC serial port using a minimum 3 wire cable execute RDFCMD select the proper
7. hows the timing obtained using the Courier V Everything modem on a leased line Figure 5 illustrates the timing that results when a direct local connection is made between the PC and the DDF6000 Sending TXD Answering RXD Answering TXD Sending RXD 0 20 40 60 80 100 120 140 160 180 200 Time msec USR 1 Figure 4 0 20 40 60 80 100 120 140 160 180 200 Time msec DIR 1 Figure 5 7 0 Final Installation When all of the modems direction finders receivers serial data expanders and the PC are operating reliably in the same room you are ready to locate the answering modems direction finders and receivers to the remote sites Be sure to note the CIV addresses of the direction finders and the receivers so that they are installed at the correct site location Also be sure not to mix up the calling and answering modems Remember to switch off the self test mode on the direction finders
8. ommand using Hyper Terminal AT amp FO amp MO amp B1 amp N3 amp W lt enter gt The modem will answer with an OK Turn the modem power off and set the DIP switches so that switches 1 and 4 are down ON and all other switches are up OFF The new settings will take effect when the modem is turned back on Repeat for all additional answering DF site modems Note that the setup strings used in both calling and answering modems cause the modems to communicate at 2400 baud at both the serial port and over the telephone line error checking correction is disabled and flow control is also disabled 5 0 Modem Operation 5 1 Calling Modem to PC Cable You can use the same cable for modem operation as used above for modem programming However all that is required is a 3 wire shielded cable that connects the calling modem to the COM port on the PC Signal PC DB25 female pin PC DE9 female pin Calling modem DB25 male pin 5 2 Answering Modem to DDF6000 Cable A 3 wire shielded cable is required that connects the following signals on the answering modem to J1 on the DDF6000 Answering modem DB25 male pin DDF6000 J1 female pin 5 3 Testing the Modems Connect a DDF6000 to an Answering Modem and connect a Calling Modem to the PC If you have set up the modems for leased line operation connect the two modems together with a length of telephone cable having RJ11 plugs such as the short length supplied with the modems
9. ou should use a serial cable and or adapter that contains all of the RS232 handshake lines If the PC has a 25 pin connector use a standard DB25 male to DB25 female 25 conductor shielded cable If the PC has a 9 pin connector use a standard DE9 male to DE9 female 9 conductor shielded cable with a DE9 female to DB25 male adapter at the modem end 4 2 PC Setup Run the Windows 95 Hyper Terminal program Start Programs Accessories HyperTerminal Set the communications parameters from the Terminal Program Properties menu which is accessed by selecting File Properties On the Tab called Phone Number change the Connect using box to read Direct to COM n where n is the COM port available on your PC Click on Configure and set the Port Settings for Bits per second 2400 Data Bits 8 Parity None Stop bits 1 and Flow control Hardware Check OK to return to the Terminal Program Properties menu Select the tab marked Settings and select ASCII Setup Deselect all the option boxes and click on OK Click on OK again to return to the Hyper Terminal program screen With the modem power off set the DIP switches on the modem so that switches 3 5 8 and 10 are down ON and all other switches are up OFF Do this for all of the modems to be used When the modem power is turned on this will load the factory default settings into the modem Connect one of the modems to the PC using the cable described in section 4 1 Do not connect the RJ1
10. p FO amp MO amp B1 amp N3 amp L1S7 10S44 2 amp W lt enter gt The modem should respond with OK If it does not check the command line and enter it again Turn the modem power off and set the DIP switches so that switches 1 4 and 5 are down ON and all other switches are up OFF The new settings will take effect when the modem is turned back on Repeat for all additional calling modems 4 5 Answering Modem with Leased Line Locate a modem that will be used at the DF site the answering unit Connect it to the PC using the same setup described in section 4 3 Verify that the program is communicating with the modem by typing AT lt enter gt and seeing that the modem responds with OK Enter the following command using Hyper Terminal AT amp FO amp MO amp B1 amp N3 amp L1S7 10S44 2 amp W lt enter gt The modem should respond with OK If it does not check the command line and enter it again Turn the modem power off and set the DIP switches so that switches 1 and 4 are down ON and all other switches are up OFF The new settings will take effect when the modem is turned back on Repeat for all additional answering DF site modems Note that the setup strings used in both calling and answering modems cause the modems to communicate at 2400 baud at both the serial port and over the telephone line error checking correction is disabled and flow control is also disabled 4 6 Calling Modem with Dialup Line Locate a modem that will be
11. used at the PC a calling unit Connect it to the PC using the same setup described in section 4 3 Verify that the program is communicating with the modem by typing AT lt enter gt and seeing that the modem responds with OK Enter the following command using Hyper Terminal AT amp FO amp MO amp B1 amp N3S69 2 amp Z0 XXXXxxxDTS13 16 amp W lt enter gt The modem will not answer with an OK to this setup string but if you have made a mistake it will answer with ERROR In place of xxxxxxx enter the phone number of the remote site to be called by this modem Label the modem Dials xxxxxxx It is strongly recommended that the modems be tested for operation before locating them to remote sites as described in Section 5 below You may want to program a temporary local dial up number to perform these tests then reprogram the calling modems to the permanent phone number of the remote site Turn the modem power off and set the DIP switches so that switches 1 4 and 5 are down ON and all other switches are up OFF The new settings will take effect when the modem is turned back on Repeat for all additional calling modems 4 7 Answering Modem with Dialup Line Locate a modem that will be used at the DF site the answering unit Connect it to the PC using the same setup described in section 4 3 Verify that the program is communicating with the modem by typing AT lt enter gt and seeing that the modem responds with OK Enter the following c
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