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Press 4 to save the changes. 5. Press 2 to display the EZ Bcn 1 screen. 6. Repeat Step 2 through Step 4 to select the station for Beacon Channel 1. Manually selecting frequencies Note – Use this method only if you cannot find the required radiobeacon name in the list. To manually select Beacon DGPS radiobeacon frequencies using the EZ Bcn screens: 1. Navigate to the Man Bcn Freqs screen. 2. Press 3 to activate the cursor in the Beacon Channel 0 field: 3. Press 2 or 1 to enter the frequency one number at a time. Press 3 to move to the next digit. 72 DSM 132/132RS Receiver User Guide Configuring the Receiver Configuring the Receiver . Press 4 to save the changes. 5. Press 3 to select the Beacon Channel 1 field. 6. Repeat step 3 to enter the other required frequency. 7. Press 4 to save changes. Configuring Other DGPS Corrections To configure for RTCM SC104 Differential corrections to be received on Port A or Port B: 1. Navigate to the Configuration menu. 2. Navigate to the Port A Config screen (or Port B Config screen). 3. Select a suitable port (for example, Port A In/Out) and then use the menu keys to specify RTCM as the input (I). 4. The DSM 132 is now configured to use any incoming DGPS corrections on the selected port. Note – This happens even though the data displayed by the DGPS Source screen shows the source of the DGPS to be either Beacon, L-band, or WAAS/EGNOS. Configuring DGPS Base Station You may need this option when working in a remote location where satellite differential correction and/or beacon tower differential correction is not available. If you have not yet done so, install the latest version of FlashLoader 100 on the office computer. See page 56. DSM 132/132RS Receiver User Guide 73 Configuring the Receiver Configuring the Receiver 1. Use the power/data cable to connect the receiver to the serial port on the office computer (this is usually COM1 or COM2). 2. On the office computer, click and then select Programs / FlashLoader100. 3. Click Find Device. FlashLoader100 detects the receiver and automatically selects the correct port. A message appears identifying the port which is connected to the receiver. Click OK. 4. Enter the password. For more information, see Step 2 through Step 6 on page 82. To configure the communication port: 1. Navigate to the Config Port B (or Config Port A) menu. 2. Press 2. The Port Input/Output screen appears: 3. Press 3 to activate the cursor. 4. Press 3 until the cursor highlights the third item on the second line. 5. Press 2 until RTCMI appears: a. I TSIP 9600 801 0 RTCMI 9600 6. Press 4 to save the settings. 7. Press 5 several times to return to the Home screen. 74 DSM 132/132RS Receiver User Guide Configuring the Receiver Configuring the Receiver . If necessary, change the baud rate and parity to match the settings used by your base station radio. For more information, see Configuring input / output communication, page 59. Configure base station output settings Note – The Base Stn Config menu is available only when the Base Station option is installed and a communication port is configured correctly for it. In Base Station mode, the receiver outputs RTCM (GPS correction) data. The RTCM data can be transmitted to an external radio, which then broadcasts the RTCM information to other DSM 132 “rover” receivers in the field that are within radio range. Generally, all rover units are equipped with an identical radio which enables them to receive the RTCM data from the base station radio. The DSM 132 receiver has real-time capabilities, so a submeter reference position can be created in seconds. Set the receiver antenna over a known surveyed location, or allow the receiver to compute the reference location. Once the reference position is supplied, the receiver can begin computing PseudoRange correction information. The information is converted to RTCM output data format. This information is used to correct the rover’s final output position, and so provides submeter accuracy. Base location You can use the Base Location screen to view the current location of the receiver antenna. You can also use this screen to change the setting for the location of the antenna. The screen provides the following options: • View location, page 76 • Set from here, page 76 • Edit base position, page 77 • Set from averaged positions, page 77 DSM 132/132RS Receiver User Guide 75 Configuring the Receiver Configuring the Receiver To view the current location of the receiver antenna: 1. Navigate to the Configuration / Base Stn Config / Base Location screen: 2. Press 4 one or more times to view the current computed reference position, latitude, longitude, and altitude. Note – The reference position coordinates are in latitude/longitude; the datum is WGS-84; altitude is referenced to Mean Sea Level (MSL). Set from here To set the receiver antenna location, select the current computed GPS position as follows: 1. Navigate to the Base Location screen. 2. Press 3 to activate the cursor. 3. Press...

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