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WinFrog Device Group:
Device Name/Model:
Device Manufacturer:
Device Data String(s)
Output to WinFrog:
WinFrog Data String(s)
Output to Device:
WinFrog Data Item(s) and their
RAW record:
DEVICE DESCRIPTION:
There are two different MX 9400 models: the MX9400N and MX9400R. The MX9400N is
designated as a navigator model, whereas the MX9400R is a reference station model.
(Note that the MX9400R can also be used for mobile operations). There is also a MX9401R
model that is the same as the MX9400 except that it is packaged in a weatherproof
housing. All references below will refer to these units simply as the MX9400.
The MX9400 processes both the C/A and P Code measurements to generate three-
dimensional positions. The MX9400 can accept standard RTCM SC-104 input to
generate and output a differentially corrected position. The MX9400 can also output
pseudorange, ephemeris, and time and date information, which can be used by
WinFrog's GPS Calculations extension module to internally calculate a GPS position.
The MX9400 utilizes 4 serial interface ports that communicate via a set of proprietary
sentences in accordance with the NMEA –0183 standard to command and control the
equipment. These 4 ports are combined into a 25 pin "DB" type multi-port interface
connector found at the rear of the unit. A special cable must be used in conjunction with
the multi-port interface. This cable splits the single port into 4 separate connectors, each
representing an individual "port" and providing a specific purpose.
Port 1,2, and 3 are RS-232 ports; Port 4 is a RS-422 port. Port 1 is fixed as the Control
Port. All ports are factory set to 9600 baud, but are configurable to range from 300 to
38,400 baud.
The MX9400's four ports have the following default configurations:
Port 1: RS232, PC control and data messages, 9600 baud default–Input/Output
This port is used to receive control commands from WinFrog.
Port 2: RS232, Instrumentation/Raw data – Output
WinFrog User's Guide - Appendix C – GPS/MX 9400
GPS
MX9400
Leica Geosystems Inc
23868 Hawthorne Boulevard
Torrence, CA 95050 USA
Tel: (310) 7915300
Fax:(310) 791-6108
E-mail: info@leica-gps.com
Configurable: can incl. NMEA and Leica proprietary
A series of $PMVXG type strings for unit initialization
and enabling of output options. (See Configuration
Details for more info.)
POSITION
TIMEDATE
303
999
Page 1 of
22
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Related Manuals for Leica Geosystems MX9400N
Summary of Contents for Leica Geosystems MX9400N
- Page 1 TIMEDATE DEVICE DESCRIPTION: There are two different MX 9400 models: the MX9400N and MX9400R. The MX9400N is designated as a navigator model, whereas the MX9400R is a reference station model. (Note that the MX9400R can also be used for mobile operations). There is also a MX9401R model that is the same as the MX9400 except that it is packaged in a weatherproof housing.
- Page 2 Ephemeris data) to WinFrog Port 3: RS232, Differential Corrections (MX41R, MX 51R, &MX52R) – Input only for MX9400N/ Input and Output for MX9400R Port 4: RS422, Equipment/ NMEA – Input/Output There are also 2 additional connections found in the MX9400’s rear panel: •...
- Page 3 Select Serial Ports and Baud Rates: As mentioned above, each of the MX9400’s serial ports is designated for specific tasks. The default configuration of WinFrog’s Configure MX Serial Ports dialog box (as seen above) reconfigures the MX9400’s ports’ duties so that the MX9400 uses Port 1 for both input of CDU commands and output of Instrumentation/Raw data and NMEA messages.
- Page 4 Type 12 Bin: This is a Leica proprietary data format containing satellite measurement data in a compressed binary format, output through the Instrumentation / Raw Data port Alm/Eph: This refers to the output of GPS Ephemeris and Almanac data in a Leica proprietary format though the Instrumentation / Raw Data port.
- Page 5 As mentioned previously, in order for WinFrog to communicate with the MX9400 using only one of the MX9400’s four ports, WinFrog reassigns the data output to port 1 of the MX9400, as seen below. This configuration has assigned PC Control input, Raw data Output, and NMEA output to port 1.
- Page 6 Position: A valid initial position should be entered. This provides an initial estimate of receiver position for Rover operations, and reference station coordinates if the MX9400 is used as a DGPS reference station. You must select the Update Box for the entered value to be used.
- Page 7 Note: Ensure that the value entered in the Ellipsoid Height dialog box refers to the WGS 84 ellipsoid, not Mean Sea Level height. Elev. Cutoff: Enter the elevation limit value (in degrees above the horizon). If a satellite drops below this value, it will not be used in the position calculations. Local Time Offset: This value will be added to the observed GPS time to offset WinFrog system time.
- Page 8 If the All box is not checked, you must define which particular reference station to use by entering the reference station’s code. The Code entry box allows you to specify which Differential Base Station will be used by the MX9400. Once you have configured this dialog box and clicked the OK button, WinFrog sends the configuration option messages to the MX9400.
- Page 9 Calculation: Set the Calculation selection to Primary or Secondary. Devices set to Primary calculation are used to provide a vessel position. Note that more than one Primary positioning device can be added to a vehicle’s device list; data from these devices will be combined in a weighted mean solution.
- Page 10 Accuracy: The Accuracy value entered provides WinFrog with the expected accuracy of the position from this device. This value is used in the weighting of this device compared to other positioning devices that may be added to the vehicle’s device list. The smaller the value entered, the more accurate it is considered to be, and hence the more weight that will be applied to the device’s data.
- Page 11 Calculation: Select either the Primary or Secondary radio button. Devices set to Primary calculation are used to produce a vehicle position. If more than one positioning device added to the vehicle’s device list is deemed as primary, WinFrog will weight them based on the accuracy value entered.
- Page 12 Accuracy: The Accuracy value entered provides WinFrog with the expected accuracy of the position from this device. This value is used in the weighting of this device compared to other positioning devices that may be added to the vehicle’s device list. The smaller the value entered, the more accurate it is considered to be, and hence the more weight that will be applied to the device’s data.
- Page 13 vehicle) to the device (antenna) location. Offsets Fore and Starboard are entered as positive values, offsets measured Port and Aft are entered as negative values. Rule of thumb suggests the CRP “Z” reference should be at the water line. DGPS Mode: Select the desired mode of DGPS operation There are four different DGPS modes: Auto, On, Off and Generate.
- Page 14 Graphics: Select the On radio button to display a labeled square in the Graphics and Bird’s Eye displays, depicting the raw (unfiltered) location of the GPS antenna. This provides a means of comparing raw and filtered positions between different sources. Display: The selection made here determines which type of information will be displayed in WinFrog’s Calculations window (when the GPS Pseudorange device is turned on for...
- Page 15 GDOP – Geometric Dilution of Precision. GDOP is a numerical value that serves as a measure of the effect of the satellite constellation’s geometry on the derived positional accuracy. In other words, the GPS receiver’s measurement accuracy is multiplied by the GDOP value to derive the overall positional accuracy of the GPS receiver (including the three positional dimensions and clock offset).
- Page 16 This dialog box provides you with the ability to enable or disable statistical w test and F tests. By default, both of the w-test and the F-test are turned off. w-Test: The w-test entails normalizing the residuals of a GPS pseudorange solution and testing these against a 99% confidence limit for outliers.
- Page 17 Ref-Stns: Click the RefStns button in the Pseudorange Calculation dialog box to open the Select DGPS Reference Stations dialog box, as seen below. The Select DGPS Reference Stations dialog box allows you to define which reference stations will be used by WinFrog in its Multi-Ref solution. You can either configure WinFrog to simply use all received stations (to a maximum of 5), or you can control the use of corrections, as deemed proper.
- Page 18 must be entered, along with station usage and relative standard deviation values, as detailed below: Select DGPS Reference Stations: Selection of individual stations is as follows: ID – The Reference Station identification code. See SkyFix documentation for a listing of all SkyFix reference station ID Codes. Coast Guard Beacon corrections also contain unique codes for each station.
- Page 19 Data item: GPS, MX9400, TIMEDATE The TIMEDATE data item must be edited once it is added to a vehicle’s device list. Highlight the data item in the vehicle’s device list, then select the Edit button. The Time Synchronization dialog box appears as seen below. Synchronize Mode The synchronization can be turned On or Off.
- Page 20 The data logged includes the time of the clock adjustment and the amount it was adjusted. Note that this is only in affect if Raw Data recording is turned on. Monitoring the synchronization The synchronization of the WinFrog clock can be monitored from the Calculation Window using the Data Item Text and Time Series options.
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Page 21: Configuration Details
CONFIGURATION DETAILS: Refer to the MX9400 operator’s manual and CDU programming documentation for information on setting up the receiver to output a NMEA GGA positioning string. RAW DATA LOGGING: WinFrog sends various $PMVXG messages to the MX9400,depending on operator option selections: •... - Page 22 MX9400 SPECIFICATIONS (Manufacturer’s): Receiver Description • Tracking: 12-channel continuous tracking of code and phase. • Sensitivity: -143dBm Costas threshold • Measurement Accuracy: 10cm code (single epoch) 5mm phase Connectors • Multiport I/F: DB25S • Time: SMB (Jack receptacle) • Event Input: SMB (Jack receptacle) •...
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