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【正文】 83G first utilizes GPS satellites to get to RTK Fixed status. Then if more than 2 acceptable GLONASS satellites are available, RTK Fixed GPS+GLO RTK status is achieved. 61 . Question: Why is my radio not receiving RTK corrections? Answer: Check Base Station Configuration. Make sure that Base Station receiver is set up and using more than 5 mon Satellites. Check Rover Configuration。 make sure that it is configured to use the correct RTK format corrections. Both Base Station and Rover must use the same UHF Radio Channel and same correction format. . Question: How do I know which message type to select RTCM , RTCM , CMR, or CMR+? Answer: Base stations transmit different messages types. It is important to confirm what message type(s) the base is transmitting so the Rover can be set accordingly. SurvCE allows the Message types for some base stations to be identified directly in SurvCE. . Question: How can I verify the Windows Mobile174。 version my hand held device is operating on? Answer: In the main view of the controller, select the Start Menu, next click Settings Menu, then select the System tab, lastly select the About icon which will display the Windows Mobile174。 version. . Question: How do I delete points that have been stored in SurvCE? Answer: One way to delete points is to go to the File tab and select the Points button. Once in the Points Menu select the point and click delete. . Question: How do I change my settings in SurvCE to use metric, International Feet, or US Survey Feet for the distance? Answer: These settings must be set when starting a new job. In the File tab select Job Settings, then select the System tab and choose the Distance Units from the drop down menu. . Question: How do I stop the SMT8883G from logging automatically on startup? Answer: The SMT8883G remembers the settings set during the last configuration and uses these upon restart. To stop logging upon startup, Close the Data File and reconfigure the base/rover. Reconfigure by selecting the green check mark on GPS Base/Rover tab. 62 . Question: I can’t connect to the SMT8883G via Bluetooth174。, why not? Answer: Make sure that the serial cable (SER1) is disconnected. The serial cable takes precedence to Bluetooth174。 connectivity, and because of this Bluetooth174。 is unable to connect when the cable is attached. Also verify the Bluetooth174。 is ON/Visible on the controller (Archer, Allegro CX, or Allegro MX). See Bluetooth174。 section for setup. . Question: How do I update my data collector to the latest Software version? Answer: Download the SurvCE version at approved by Altus. Connect the data collector to a PC (via Serial or USB connection). Use Active Sync to synchronize files by checking the files box, then run the latest SurvCE version executable and perform the tasks as directed on the screen. Once pleted, software version can be verified in the “Equip” tab of SurvCE in the “About SurvCE” menu. If the version is not on the website, contact PENTAX Support. . Question: I noticed that the units get extremely hot at the top, what effect might this have on any operations? Answer: The SMT8883G is designed to operate reliably from 20 to +65 176。C. Like most manufacturers, we test beyond that limit to ensure we can operate at the published extremes. . Question: What can be expected in the potential 2021 GPS meltdown? Answer: The GPS constellation is well over 25 years old now [not all birds]. There have been delays in launching newer technology birds, but it doesn39。t necessarily mean the older satellites will shut down。 it doesn39。t mean they won39。t either! Worst Case: DOD requires 95% probability of 24 satellites at any given time. Best Case: The existing satellites will last 20 more years before shutting down and something new and improved will take its place. . Question: How do I update the SMT8883G to the latest firmware version? Answer: Get the latest firmware release from Altus. Connect the 5 pin controller serial cable (SER1) to the bottom of the SMT8883G, connecting the DB9 side of the cable to a PC’s RS232 serial port. Power on the SMT8883G and open RxControl. Once connected to the SMT8883G click the tools tab and select upgrade receiver. Click Ok to close connection. 63 Then click “Next” in the RxControl Upgrade Wizard. Next select the COM port used for the connection between the SMT8883G and puter followed by clicking “Next”. Locate the appropriate SUF file, and click “Next”. Then select “Upgrade”, and proceed with any other on screen directions. Once pleted, firmware version can be verified in the “Help” tab of RxControl in the “Receiver Identification” menu. It can also be checked in SurvCE, follow “viewing battery status” section where the firmware can also be identified. 64 常見 GNSS 相關(guān)縮寫 APME A Posteriori Multipath Estimation ARP Antenna Reference Point ASCII American Standard Code for Information Interchange CMR Compact Measurement Record CPU Central Processing Unit CR Carriage Return CTS Clear to Send DGPS Differential Global Positioning System DOP Dilution of Precision EGNOS European Geostationary Navigation Overlay System ESTB EGNOS System Test Bed FPGA Field Programmable Gate Array GLONASS Global Orbiting Navigation Satellite System (Russian alternative for GPS) GNSS Global Navigation Satellite System GPRS General Packet Radio Service GPS Global Position System GPX GPS eXchange GSM Global System for Mobile munications GUI Graphical User Interface HERL Horizontal External Reliability Level HPL Horizontal Protection Level IGS International GNSS Service LAMBDA Leastsquares Ambiguity Decorrelation Adjustment LED Light Emitting Diode 65 MDB Minimal Detectable Bias MOPS Minimum Operational Performance Standards MSAS Multifunctional Satel