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Copy file name to clipboardExpand all lines: docs/configure_base.md
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The Base Menu allows the user to select between Survey-In or Fixed Base setups.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Base_Menu.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Base_Menu.jpg)
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In **Survey-In** mode, the minimum observation time and Mean 3D Standard Deviation can be set. The defaults are 60s and 5m as directed by u-blox. The device will wait for the position accuracy to be better than 1 meter before a Survey-In is started. Don't be fooled; setting the observation time to 4 hours or an initial positional accuracy of 0.3m is not going to significantly improve the accuracy of the survey - use [PPP](https://learn.sparkfun.com/tutorials/how-to-build-a-diy-gnss-reference-station#gather-raw-gnss-data) instead.
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Enabling NTRIP will present a handful of new options seen below:
This is a new and powerful feature of the RTK Facet. The RTK Facet can be configured to transmit its RTCM directly over WiFi to the user's mountpoint. This eliminates the need for a radio link.
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* A casting service such as [RTK2Go](http://www.rtk2go.com) or [Emlid](http://caster.emlid.com) (the port is almost always 2101)
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* A mount point and password
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/1/4/6/3/RTK_Surveyor_-_Device_Configuration_-_NTRIP_Server_Broadcasting_v11.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/1/4/6/3/RTK_Surveyor_-_Device_Configuration_-_NTRIP_Server_Broadcasting_v11.jpg)
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-> *NTRIP Server Connected!* <-
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*NTRIP Server Connected!*
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With these credentials set, RTK Facet will attempt to connect to WiFi, your caster of choice, and begin transmitting the RTCM data over WiFi. We tried to make it as easy as possible.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/1/4/6/3/RTK_Surveyor_-_Device_Configuration_-_NTRIP_Server_Broadcasting_Bytes_v11.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/1/4/6/3/RTK_Surveyor_-_Device_Configuration_-_NTRIP_Server_Broadcasting_Bytes_v11.jpg)
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Every second a few hundred bytes, up to ~2k, will be transmitted to your mount point.
Copy file name to clipboardExpand all lines: docs/configure_data_logging.md
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# Configure Data Logging Menu
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_Logging_Cyclic.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_Logging_Cyclic.jpg)
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-> *RTK Facet Data Logging Configuration Menu* <-
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*RTK Facet Data Logging Configuration Menu*
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Pressing 5 will enter the Logging Menu. This menu will report the status of the microSD card. While you can enable logging, you cannot begin logging until a microSD card is inserted. Any FAT16 or FAT32 formatted microSD card up to 32GB will work. We regularly use the [SparkX brand 1GB cards](https://www.sparkfun.com/products/15107) but note that these log files can get very large (>500MB) so plan accordingly.
Copy file name to clipboardExpand all lines: docs/configure_gnss_receiver.md
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The GNSS Receiver menu allows a user to change the report rate, dynamic model, and select which constellations should be used for fix calculations.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_ReceiverNTRIP.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_ReceiverNTRIP.jpg)
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-> *GNSS menu showing measurement rates and dynamic model* <-
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*GNSS menu showing measurement rates and dynamic model*
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**Measurement Frequency** can be set by either Hz or by seconds between measurements. Some users need many measurements per second; the RTK Facet supports up to 20Hz with RTK enabled. Some users are doing very long static surveys that require many seconds between measurements; RTK Facet supports up to 8255 seconds (137 minutes) between readings.
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Note: When in base mode, measurement frequency is set to 1Hz. This is because RTK transmission does not benefit from faster updates, nor does logging of RAWX for PPP.
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The **Dynamic Model** can be changed but it is recommended to leave as *Portable*. For more information, please refer to the [ZED-F9P Integration Manual](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/ZED-F9P_IntegrationManual__UBX-18010802_.pdf).
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_Receiver_Constellations.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_Receiver_Constellations.jpg)
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-> *Enable or disable the constellations used for fixes* <-
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*Enable or disable the constellations used for fixes*
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**Constellations Menu:** The ZED-F9P is capable of tracking 184 channels across four constellations and two bands (L1/L2) including GPS (USA), Galileo (EU), BeiDou (China), and GLONASS (Russia). SBAS (satellite-based augmentation system) is also supported. By fault, all constellations are used. Some users may want to study, log, or monitor a subset. Disabling a constellation will cause the ZED to ignore those signals when calculating a location fix.
**Toggle NTRIP Client:** The SparkFun RTK devices can obtain their correction data over a few different methods:
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With these credentials set, RTK Facet will attempt to connect to WiFi, then connect to your caster of choice, and then begin downloading the RTCM data over WiFi. We tried to make it as easy as possible. Every second a few hundred bytes, up to ~2k, will be downloaded from the mount point you've entered. Remember, the rover must be in WiFi range to connect in this mode.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_Rover_NTRIP_Client_Connection.png) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_Rover_NTRIP_Client_Connection.png)
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-> *Rover with Active NTRIP Client Connection* <-
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*Rover with Active NTRIP Client Connection*
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Once the device connects to WiFi, it will attempt to connect to the user's chosen NTRIP Caster. If WiFi or the NTRIP connection fails, the rover will return to normal operation.
Copy file name to clipboardExpand all lines: docs/configure_lband.md
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**Note:** This section only applies to RTK Facet *LBand* products. Regular RTK Facet products do not have LBand antennas or receivers built in.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_LBandA.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_LBandA.jpg)
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-> *LBand Menu showing Home WiFi credentials* <-
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*LBand Menu showing Home WiFi credentials*
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*RTK Facet LBand* products are equipped with a special antenna and extra receiver to decrypted the LBand corrections using the PointPerfect service from u-blox. The LBand sub menu allows a user to enter their 'Home' WiFi settings. This WiFi SSID and password are used to regularly obtain the needed decryption keys from u-blox. This is normally your home WiFi or other accessible WiFi.
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LBand decryption keys are valid for a maximum of 56 days. During that time, the RTK Facet LBand can operate normally without the need for WiFi access. However, when the keys are set to expire in 28 days or less, the RTK Facet LBand will attempt to log in to the 'Home' WiFi at each power on. If WiFi is not available, it will continue normal operation.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_LBand_DayToExpire.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_LBand_DayToExpire.jpg)
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-> *Display showing 14 days until LBand Keys Expire* <-
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*Display showing 14 days until LBand Keys Expire*
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The unit will display various messages to aid the user in obtaining keys as needed.
Upon successful reception and decryption of LBand corrections, the satellite dish icon will increase to a three pronged icon. As the unit's fix increases the cross hair will indicate a basic 3D solution, a double blinking cross hair will indicate a floating RTK solution, and a solid double cross hair will indicate a fixed RTK solution.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_LBandA.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_LBandA.jpg)
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-> *LBand Menu showing Home WiFi credentials* <-
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*LBand Menu showing Home WiFi credentials*
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In addition to allowing the entry of WiFi credentials, the LBand Menu will display the Device ID. This is needed when a SparkFun RTK Facet LBand product needs to be added to the PointPerfect system. This is normally taken care of when you purchase the LBand unit with PointPerfect service added, but for customers who did not purchase the service and want to add it at a later date, this Device ID is what customer service needs.
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* Option 'k' will bring up the Manual Key Entry menu.
Because of the length and complexity of the keys, we do not recommend you manually enter them. This menu is most helpful for displaying the current keys.
From this menu a user can control the output of various NMEA, RTCM, RXM, and other messages. Any enabled message will be broadcast over Bluetooth *and* recorded to SD (if available).
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**Turn on all messages** will turn on all messages. This is a setting used for firmware testing and should not be needed in normal use.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Messages_Menu_-_NMEA.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Messages_Menu_-_NMEA.jpg)
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-> *Configuring the NMEA messages* <-
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*Configuring the NMEA messages*
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As mentioned is the microSD section of the [Hardware Overview](https://learn.sparkfun.com/tutorials/sparkfun-rtk-facet-hookup-guide/all#hardware-overview) there are a large number of messages supported. Each message sub menu will present the user with the ability to set the message report rate.
Copy file name to clipboardExpand all lines: docs/configure_ports.md
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# Configure Ports Menu
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Ports_Menu.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Ports_Menu.jpg)
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-> *Baud rate configuration of Radio and Data ports* <-
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*Baud rate configuration of Radio and Data ports*
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By default the **Radio** port is set to 57600bps to match the [Serial Telemetry Radios](https://www.sparkfun.com/products/19032) that are recommended to be used with the RTK Facet (it is a plug and play solution). This can be set from 4800bps to 921600bps.
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By default the **Data** port is set to 460800bps and can be configured from 4800bps to 921600bps. The 460800bps baud rate was chosen to support applications where a large number of messages are enabled and a large amount of data is being sent. If you need to decrease the baud rate to 115200bps or other, but be sure to monitor the MON-COMM message within u-center for buffer overruns. A baud rate of 115200bps and the NMEA+RXM default configuration at 4Hz *will* cause buffer overruns.
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-> [](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Ports_Menu_MON-COMM_Overrun.jpg) <-
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[](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/SparkFun_RTK_Express_-_Ports_Menu_MON-COMM_Overrun.jpg)
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-> *Monitoring the COM ports on the ZED-F9P* <-
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*Monitoring the COM ports on the ZED-F9P*
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If you must run the data port at lower than 460800bps, and you need to enable a large number of messages and/or increase the fix frequency beyond 4Hz, be sure to verify that UART1 usage stays below 99%. The image above shows the UART1 becoming overwhelmed because the ZED cannot transmit at 115200bps fast enough.
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The **Data** port on the RTK Facet is very flexible. It can be configured in four different ways:
Internally the **Data** connector is connected to a digital mux allowing one of four software selectable setups. By default the Data port will be connected to the UART1 of the ZED-F9P and output any messages via serial.
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