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Farm Machinery
Precision Farming & GPS
RTK for Fendt VarioGuide with a third-party base, how-to guide
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<blockquote data-quote="Pheasant Surprise" data-source="post: 1884520" data-attributes="member: 1103"><p><strong>Part 2- Configuring the Internal (VarioGuide) UHF modem</strong></p><p></p><p>Take a note of the setting of the UHF base you’re wanting to connect to. In a nutshell the UHF modem on the tractor needs to match exactly the settings of the UHF radio at the base to be able to communicate with it and receive correction data. The key things are:</p><p></p><p>a) Frequency. This can be set through the terminal in the tractor</p><p>b) Radio Protocol</p><p>c) Channel width – by default it will either be locked to 25 kHz or 12.5 kHz dependant on the RTK module type ordered from AGCO</p><p></p><p><u>Basic settings on tractor terminal</u></p><p>1. Select Signal Type as “Base Station”, the in the Base Type select “Fendt Base” – this is basically telling the receiver to use the internal UHF radio modem.</p><p>2. Use the rotary dial to select the “Channel”. This will adjust the frequency to match that of the base’s frequency (anywhere in the range from 455 to 459 MHz.) using the scroll wheel.</p><p>3. Select the “Signal Format” to be RTCM3.1, the other choices are CMR+ (for Trimble style bases) and RTCM 2.3.</p><p></p><p><u>Radio Settings and Steps using TRU</u></p><p>1. Install Topcon Receiver Utility (TRU). Latest version is 3.0.2 The TRU software is free to use from Topcon</p><p>2. Using a 9-pin serial cable connection connect tractor serial port (roof 9-pin female) to laptop. I use a USB to serial converter from Maplin for £20</p><p>3. The USB/serial cable should auto-detect the speed of the connection and parity type, but if it doesn’t set the serial port speed etc. to be 38,400 bps, (with None for parity, 8 bit word, 1 stop bit)</p><p>4. Open the TRU program and from the Device menu (top left), drop down and select “Application Mode”, then select “Modem Managing”</p><p>5. Open the data connection to UHF modem by selecting the Device menu again and “Connect”</p><p>6. The modem parameters will be displayed there. There will be three tabs, General, Settings and Functions. Select the Settings tab.</p><p>7. Finally when finished don't forget to close the connection by using 'Disconnect" from the device menu before shutting the program or your laptop. </p><p></p><p>The default settings of the standard RTK clip-in module are as follows, these settings should mirror the UHF radio settings at the base.</p><p></p><p>- Radio protocol = Satel 3AS (you also have a choice of PacCrest-4FSK, PacCrest-GMSK, Trimtalk450s and PacCrest-FST)</p><p>- Spacing = 25 kHz (for AGCO UK modules this is fixed an cannot be changed…unless you have a Topcon sourced snap-in module)</p><p>- Satel FEC = On (this is forward error correction, and is switched on by default</p><p>- FCS Mode = Off</p><p>- TX and RX addressing = Off</p><p>- Repeater = Off</p><p></p><p>[ATTACH=full]247762[/ATTACH]</p><p></p><p>[ATTACH=full]247764[/ATTACH]</p></blockquote><p></p>
[QUOTE="Pheasant Surprise, post: 1884520, member: 1103"] [B]Part 2- Configuring the Internal (VarioGuide) UHF modem[/B] Take a note of the setting of the UHF base you’re wanting to connect to. In a nutshell the UHF modem on the tractor needs to match exactly the settings of the UHF radio at the base to be able to communicate with it and receive correction data. The key things are: a) Frequency. This can be set through the terminal in the tractor b) Radio Protocol c) Channel width – by default it will either be locked to 25 kHz or 12.5 kHz dependant on the RTK module type ordered from AGCO [U]Basic settings on tractor terminal[/U] 1. Select Signal Type as “Base Station”, the in the Base Type select “Fendt Base” – this is basically telling the receiver to use the internal UHF radio modem. 2. Use the rotary dial to select the “Channel”. This will adjust the frequency to match that of the base’s frequency (anywhere in the range from 455 to 459 MHz.) using the scroll wheel. 3. Select the “Signal Format” to be RTCM3.1, the other choices are CMR+ (for Trimble style bases) and RTCM 2.3. [U]Radio Settings and Steps using TRU[/U] 1. Install Topcon Receiver Utility (TRU). Latest version is 3.0.2 The TRU software is free to use from Topcon 2. Using a 9-pin serial cable connection connect tractor serial port (roof 9-pin female) to laptop. I use a USB to serial converter from Maplin for £20 3. The USB/serial cable should auto-detect the speed of the connection and parity type, but if it doesn’t set the serial port speed etc. to be 38,400 bps, (with None for parity, 8 bit word, 1 stop bit) 4. Open the TRU program and from the Device menu (top left), drop down and select “Application Mode”, then select “Modem Managing” 5. Open the data connection to UHF modem by selecting the Device menu again and “Connect” 6. The modem parameters will be displayed there. There will be three tabs, General, Settings and Functions. Select the Settings tab. 7. Finally when finished don't forget to close the connection by using 'Disconnect" from the device menu before shutting the program or your laptop. The default settings of the standard RTK clip-in module are as follows, these settings should mirror the UHF radio settings at the base. - Radio protocol = Satel 3AS (you also have a choice of PacCrest-4FSK, PacCrest-GMSK, Trimtalk450s and PacCrest-FST) - Spacing = 25 kHz (for AGCO UK modules this is fixed an cannot be changed…unless you have a Topcon sourced snap-in module) - Satel FEC = On (this is forward error correction, and is switched on by default - FCS Mode = Off - TX and RX addressing = Off - Repeater = Off [ATTACH=full]247762[/ATTACH] [ATTACH=full]247764[/ATTACH] [/QUOTE]
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RTK for Fendt VarioGuide with a third-party base, how-to guide
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