Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for iGage iG4
Summary of Contents for iGage iG4
-
Page 1: User Manual
Static GNSS Receiver User Manual Revision S 2019.08.13 (B9630) - Page 2 Bluetooth® is a registered trademark of Bluetooth SIG, Inc. FCC Notice iG4 receivers comply with the limits for a Class B digital device, pursuant to the Part 15 of the FCC rules when it is used in the Portable Mode.
-
Page 3: Table Of Contents
Large Structures to the South ........42 Installing the Download Tool ........... 14 Huge Trees to the South ..........43 Connecting the iG4 Receiver to your Computer .... 14 Huge Trees Overhead ............ 43 Starting the iGx Download Tool ........15 Large Reflective Surfaces Nearby ........ - Page 4 RMA ................57...
-
Page 5: Introduction
Introduction Thank you very much for choosing to purchase and use an iG4 GNSS receiver! The iG4 features outstanding static performance and is easy-to-use with automated downloads and submissions, we know that your new receiver will be a valuable tool that quickly pays for itself. -
Page 6: The Really-Quick-Start Guide
Put a freshly charged battery in the receiver, turn on the receiver, wait 10-seconds for the power LED to flash and then plug your iG4 into a USB connector on your computer. If you see the Windows AutoPlay screen: click on the red ‘X’... -
Page 7: Exporting To Other Programs (Not Opus)
Then in the drop-down selection box: Enter ‘IG4”, wait a moment for the list to populate and then click on the ‘IGAIG4 NONE’ selection to choose the correct antenna model. 14. Finally press the ‘Upload to Rapid Static’ or ‘Upload to Static’ button as prompted at the bottom of the screen. -
Page 8: What's In The Ig4 Box
What’s in the iG4 Box? Other than a suitable tripod or pole, iG4 receivers are sold as complete kits, ready to record OPUS compatible static raw data sets. Each receiver kit includes these items: A Hard Shell Carry Case This User Manual... -
Page 9: Technical Assistance
Use and Care The iG4 receiver is a field ready instrument; however it is also a delicate electronic instrument. Take suitable care to avoid damage to the instrument. Avoid dropping the receiver as it can change the phase center of the antenna. -
Page 10: Battery Safety And Disposal
The receiver is suitable for use in a human appropriate atmosphere, it is not suitable for use in explosive environments. Risk of Electrocution: Because of risk of electrocution it is very dangerous to use poles or extensions in the vicinity of overhead electrical lines. Maintain a safe distance from overhead electrical delivery systems. -
Page 11: Battery Charger
After a battery is fully charged, it is recommended to remove the battery for extended storage. Optional Accessories Optional Heavy-Duty External Power Cables are available for the iG4 from iGage. They are reasonably priced and are perfect for attaching your receiver to external power for extended operation. -
Page 12: On/Off Pushbutton
Mode / Record Pushbutton iG4 receivers are factory configured to automatically begin recording after the receiver is turned on and tracking satellites. (You probably won’t ever need to use the Record button.) If the receiver is recording data, pressing and holding the Record button for two seconds toggles the receiver from collecting data, to not collecting data and closes the current occupation file. -
Page 13: Collecting Static Data
To turn the iG4 off, press and hold the On/Off button for one second. All four LED’s will quickly flash three times and the receiver will power down. NOTE: If the two right LEDS (Green and Yellow) flash at the same time, then the flash memory has been corrupted (typically by removing the cable while downloading data.) Check the... -
Page 14: Downloading, Processing And Archiving Data
Connecting the iG4 Receiver to your Computer Summary: Turn on the GPS, wait fo 10-seconds; plug in the USB Cable to your computer. The iG4 receiver mounts just like a USB thumb drive (flash drive) on your Windows computer. No special drivers are required. -
Page 15: Starting The Igx Download Tool
Since the drive connects as a standard USB thumbdrive the drivers are built into Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10. If your iG4 receiver does not mount or an error message is displayed, you can usually unplug the receiver, wait a moment, then plug it back in. -
Page 16: Submitting An Occupation To Opus
NGS OPUS from a Windows XP machine. This limitation is imposed by the NGS, not by iGage and there is no work-around. Once all of the new occupations have downloaded you can submit an occupation to NGS OPUS, NGS OPUS-RS, RTX, AUSPOS. - Page 17 In the drop-down selection box: Enter ‘IG4” and then click on the ‘IGAIG4 NONE’ selection to choose the correct antenna model. The NGS OPUS Submission form will be ready to submit, check the entries and any extended options that you might want to use. The status bar will prompt you with the correct submission button:...
-
Page 18: Setting The Receiver Type
Press either the ‘Upload to Rapid-Static’ or ‘Upload to Static’ button as directed and your occupation will be uploaded to OPUS for processing. Note, you may select an alternative PPP Service provider (on the configuration tab.) Some of the alternative providers are: Trimble’s RTX Service AUSPOS Brazilian Institute of... -
Page 19: Performing Quality Control Checks
We use it to verify receiver operation in our hardware validation process. The MSS Factory Support Button If you contact iGage for support, the technician may ask to view your computer screen remotely. Clicking the MSS button will download a support tool and provide a passcode that you can read to the technician. -
Page 20: Advanced Download Settings
with all of the support files and settings will be bundled into a single ZIP file and pushed to the factory. After you send a file, the resulting filename will be shown. You need to let the factory support person know what the filename is so they can find it and help you. Advanced Download Settings Configuring the Download Tool Click on the 'Configuration':... -
Page 21: Archive All Projects
In the Base Folder, the download tool will create a sub-folder for each Project that you add. In addition there are always three special folders: _New new occupation files downloaded from the receiver are placed here first _Deleted if you delete an occupation, it is not really deleted, just moved to the _Deleted folder. -
Page 22: Minimum File Size To Transfer
If the HCN Key has been correctly entered, the ‘OK’ will be shown in a green box, otherwise it will display ‘????’ in a red box. Click the ‘OK’ button to store the receiver type and HCN key on both the receiver and your computer. -
Page 23: Decimate Opus Submission To
The default recording interval for static receivers sold by iGage is 5-seconds. If we know you will be processing UAV data with the iG4 files we will preset the interval to 1-second at the factory prior to shipping. The default recording interval for RTK receivers sold by iGage is 1-second. -
Page 24: Export 8.3 Filenames
The submit button on the main page tracks this setting and the upload strategy is adjusted to each available service. Additional Information is available on each service on the web: OPUS: http://geodesy.noaa.gov/OPUS/ RTX: http://trimblertx.com AUSPOS: http://www.ga.gov.au/bin/gps.pl IBGE: http://www.ibge.gov.br/home/geociencias/geodesia/ppp/default.shtm Export 8.3 Filenames (Hidden when Simple) If this box is unchecked then the iGx download program submits files using filenames like this: 917226_14_072_A0.OBS... -
Page 25: Utilities
We recommend that you disable the ‘Use Direct OU Submission’ checkbox. Utilities (Hidden when Simple) Additional utilities for working with observations are included. “1. Undelete Occupations” When you delete an observation, it is actually moved to a special “_Deleted” folder. Clicking the Undelete Occupation button allows you to specify a deleted observation to restore. -
Page 26: The 'Log' Tab
The ‘Log’ Tab The ‘Log’ tab shows detailed results of the current program operation. It may be useful to debug some aspect of file processing. GPS 'Settings' Tab The 'GPS Settings' tab allows you to change these receiver behaviors: Automatic End of Sessioning Recording Interval for Static Data Elevation Mask Check and Update Receiver Firmware... -
Page 27: Recording Interval
If you plug a USB-to-serial port adapter into your computer after starting the download tool, press the refresh button: the program should find the newly installed port. (Only ports in the range 1 through 32 are detected.) Click on the 'Read GPS' button: The configuration tool will interrogate the GPS receiver and display the 'Receiver Type', the 'Receiver ID' (the Serial Number), the GPS 'Firmware Revision' and the 'Device PN'. -
Page 28: Update Firmware
Update Firmware Updating the firmware in your receiver requires that the GPS be connected to a COM port on your computer (COM1 is best) and that your computer has an active internet connection. To update your receiver firmware click on: Once the current receiver’s firmware version is shown: the ‘Check Web for Newer’... - Page 29 Click on OK. The firmware uploader tool will be displayed: Click on the ‘Update’ button: Turn on the GPS receiver: After 5-seconds, the blue-bar will slowly move across the uploader screen. When it reaches the end: Click on OK, then wait 30-seconds, turn off the GPS receiver, finally turn it back on. Your receiver has the latest firmware.
-
Page 30: Opus: What Is It
OPUS: What is it? OPUS (Online Positioning User Service) is a free service provided by the NGS (National Geodetic Survey.) From the NGS Website: “This Online Positioning User Service (OPUS) provides simplified access to high-accuracy National Spatial Reference System (NSRS) coordinates. Upload a GPS data file collected with a survey-grade receiver and obtain an NSRS position via email. -
Page 31: Opus-Projects
OPUS-RS is not dependable. Interpreting OPUS Results When you receive an OPUS solution by email from the NGS if formatted using a fixed space font it will look like this: USER: testbench@igage.com DATE: May 06, 2014 RINEX FILE: p4490900.14o TIME: 16:08:35 UTC SOFTWARE: page5 1209.04 master93.pl 022814... -
Page 32: Getting Ready To Use Opus
4585410.516(m) 0.005(m) 4585410.529(m) 0.005(m) LAT: 46 15 35.23578 0.005(m) 46 15 35.25052 0.005(m) E LON: 240 22 8.47069 0.002(m) 240 22 8.40767 0.002(m) W LON: 119 37 51.52931 0.002(m) 119 37 51.59233 0.002(m) EL HGT: 208.861(m) 0.003(m) 208.444(m) 0.003(m) ORTHO HGT: 230.163(m) 0.018(m) [NAVD88 (Computed using GEOID12A)] UTM COORDINATES... - Page 33 Are there passive marks available for control? Will CORS, passive or a combination control the survey? Are local passive marks recoverable, undisturbed, sufficient quality, stable and GPS friendly? Where are the nearby NGS CORS stations? This will determine ‘Rapid Static’ or ‘Static’ availability.
-
Page 34: Using Opus-Projects
o Flagging, paint, PK nails, hubs, rebar, caps, hammer o Fluorescent vest, hat, bug dope, sunscreen, lunch, water, traffic control equipment o Names, addresses, telephone numbers of property owners o Gate keys / combinations Using OPUS-Projects If you are contributing occupations to a registered OPUS-Project, the iGx tool can assist you when uploading files into your project by automatically entering the NGS project ID: 1. -
Page 35: Best Opus Practices For New And Experienced Users
Best OPUS Practices for New and Experienced Users After supplying OPUS targeted receivers for many years, we know that most users experience the same reoccurring problems. The suggestions in this chapter will save you time and failures. The ‘OPUS Error Message’ Joke “The NGS processing engine has a big fishbowl with 500 possible error messages printed on little slips of paper. -
Page 36: Daily Vs. Hourly Cors Availability
If you are in Michigan: There are a lot of CORS stations within 250 KM of everywhere. OPUS-RS is likely to always succeed, even if a few of the stations are offline, are missing data or are very noisy and must be discarded. If you are in the middle of Utah there are very few CORS sites available on a good day: On a bad day, if a few stations are offline or have not yet archived data then your OPUS-RS solution will fail because there are not enough stations close to your occupation. -
Page 37: Some Areas Of The United States Effectively Only Have Daily Data
Hourly data is much more desirable. For the two sites above: P113 data is typically available at 09:03 am (UTC) on the following day. PUC2 data is typically available 35 minutes after the top of each hour. If your OPUS submission has sufficient nearby hourly stations, then you can probably wait 45 minutes after the top of the hour following your file collection and an OPUS submission will be successful. -
Page 38: Offline Cors Stations
OPUS returns the second solution with an ominous warning ‘the observation data is noisy’, only 62% of the observations were used and the ellipsoid height RMS error estimate is 0.219 meters! Q: Is the second receiver defective? The first OPUS solution was able to use all of the nearby UNAVCO PBO CORS sites which surround Wendover Utah. - Page 39 OPUS error messages are structured based on this assumption of highest quality CORS data and low expectations of your user data quality. While most CORS stations are: sited at excellent stable locations have 100% open sky view above 10 degree elevation in all directions ...
- Page 40 Availability for P113 The position trends are very stable and are within 1 cm horizontal and vertical of the published IGS08 positions. The average locations and all of the error bars are fully contained in the green error bands. Coupled with continuous recent Data Availability this station appears be a great CORS resource.
-
Page 41: Gps Suitable Locations
These stations and all the others like them are unsuitable for any processing use. It is your responsibility to exclude them from your solutions. #8 GPS Suitable Locations The NGS recommends that you submit GPS occupations collected in GPS suitable locations. However, very little NGS guidance is provided for what is ‘GPS suitable’... -
Page 42: Worst Case Scenarios
Yes, users get great results in challenging locations all the time. And you may be lucky, but these are real rules and you should consider respecting them. Worst Case Scenarios All of the sites presented below are actual customer sites (or in some cases slightly obfuscated locations to save embarrassment.) Remember that during times of low DOP (see the mission planning section of this document) you may get reasonable OPUS-Static and OPUS-RS solutions at these challenging locations. -
Page 43: Huge Trees To The South
Huge Trees to the South BAD: This site is not suitable for GPS observation because of large trees to the south: Southern sky is fully blocked and trees obscure view directly overhead. We can debate: leaves on, leaves off ... -
Page 44: Deep Canyons
BAD. RBUT (below) is a NGS CORS site, and is the closest CORS site to the iGage office in Salt Lake City Utah. This site is hindered by a solid mountain 30° mask to the South. This could be a challenging location for GPS observations and is not a great location for a CORS site. -
Page 45: Optimizing Occupations In The Real-World
This class-1 elevation bench mark with measured gravity is unfortunately in a location that is no longer suitable for GPS observations. It was set prior to the construction of the powerline. This is a location. You should avoid locations that are under high voltage transmission lines and have large steel towers directly to the south. -
Page 46: Mission Planning
#10 Mission Planning With modern GNSS RTK receivers that track lots of satellite constellations and lots of signals, mission planning is no longer required. A full GNSS receiver tracks so many satellites that there are no bad times.. However, OPUS is GPS only and mission planning should be used to select better times to occupy sketchy locations. -
Page 47: Be Procedure Smart: Avoid Blunders
Every antenna has a ‘correct’ rotation. It is VERY important to spin the antenna so that it faces the correct direction. You can determine the correct rotation for any modeled antenna by looking up the antenna definition on the NGS Antenna Calibration website. Here is the information from the NGS site for the iG4 receiver:... -
Page 48: Use The Correct Antenna Model
If you power an iG4 with external power, you should still include a batter in the head to match the antenna calibration conditions #12 Why does Modern RTK work where OPUS fails? Yes, OPUS is substantially more finicky than modern GNSS RTK. -
Page 49: Baseline Distance
GPS Only GPS + GLONASS + Galileo + BeiDou More satellites is better. More signals is better. Even though the iG4 tracks GPS, GLONASS, Galileo and BeiDou satellites, OPUS currently only uses the GPS observations. So a great constellation like the one on the right is reduced to the minimal constellation on the left. -
Page 50: Conclusion
1 foot above your GNSS antenna, the beam width is 1.6’ in diameter. 20 feet above the rover antenna (perhaps the midpoint of tree canopy), the 1 Fresnel beam diameter is 7 feet! A clearing in the treetops 100’ above your antenna needs to be 16’ in diameter. At the midpoint between your receiver and the satellite, the Fresnel beam is over 6,000 feet in diameter! And that is for the signal for a single satellite, multiply this by the number of tracked satellites and there is signal energy everywhere. -
Page 51: Troubleshooting The Ig4 Receiver
Troubleshooting the iG4 Receiver 1. Receiver won’t turn on: Battery is installed backwards or upside down: remove and install properly. Battery contacts are not aligned with the metal pads on the battery: bend them slightly to align and reinsert the battery. - Page 52 Just as a USB thumb drive can become corrupted, the receiver’s memory will suffer the same issue. Sometimes a ‘Checkdisk’ operation will fix this issue, however a drive format will always fix this issue. The chance of the battery expiring at the exact same moment that the receiver is writing occupation to the flash memory is extremely low: the write occurs once every 5-seconds (by default) and the write operation is very-very quick.
-
Page 53: Ig4 10-Pin Connector
10-Pin Connector WARNING! If you attach external power with reversed polarity you will destroy the GPS receiver. Signal Name Description Transmit Data(PC receive data through this pin) Receive Data(PC transmit data through this pin) External Power Input (9-15 V DC) -
Page 54: Ig4 Pc Data Cable
PC Data Cable The supplied interface cable includes connections for GPS, USB, Serial and External Power: Interface Cable External Power Battery Clips External power should be in the range: 9 VDC to 18 VDC. The supplied battery clip cable includes a fuse and is reverse polarity protected. -
Page 55: Ig4 Antenna Model
Antenna Model The iG4 antenna has been modeled by the NGS as: ‘ IGAIG4 NONE ‘ The calibration is available in the master antenna calibration list available from: https://www.ngs.noaa.gov/ANTCAL/ The absolute calibration is reproduced below: IGAIG4 NONE Igage IG4 MMI->North NGS 17/03/23... -
Page 56: Slant Height' To 'Vertical Height
‘Slant Height’ to ‘Vertical Height’ The iGx Download tool automatically converts from ‘feet to meters’ and from ‘slant to vertical’ using the currently selected receiver model. If you have a vertical measurement in feet you can enter an ‘F’ after the measured vertical height: “4.512 F”... -
Page 57: Warranty
Warranty IMC is “iGage Mapping Corporation” of Salt Lake City Utah USA. IMC warrants the iG4 receiver to be free of defects in material and workmanship and will conform to our published specifications for these periods: GPS receivers: 2-years Cables and accessories:...
Need help?
Do you have a question about the iG4 and is the answer not in the manual?
Questions and answers