5 CHC i83 User Manual
OPUS-RS (Rapid Static) ...................................................45
OPUS-Projects.................................................................46
OPUS Error Messages and Failures ...............................46
Interpreting OPUS Results ...............................................46
US Survey Feet vs. International Feet, Scale Factors....47
Getting ready to use OPUS........................................... 47
Using OPUS-Projects ........................................................48
Best OPUS Practices for New and Experienced Users ...49
The ‘OPUS Error Message’ Joke.....................................49
#1 OPUS-RS is Dicey .......................................................49
#2 Only Some Submissions are being returned by OPUS
.........................................................................................49
#3 OPUS-RS is Very dependent on the Number,
Availability, Proximity, Distribution and Quality of
nearby CORS Stations .....................................................50
#4 Daily vs. Hourly CORS Availability .............................50
#5 Some areas of the United States effectively ONLY
have Daily Data ...............................................................51
#6 Offline CORS Stations ................................................52
#7 NGS CORS Station Quality .........................................52
#8 GPS Suitable Locations ..............................................54
Best Case Scenario .........................................................54
Worst Case Scenarios .....................................................55
#9 Optimizing Occupations in the Real-World .............58
#10 Mission Planning .....................................................58
#11 Be Procedure Smart: avoid Blunders ..................... 59
#12 Why does Modern RTK work where OPUS fails? .. 60
#13 Fresnel Zone Considerations .................................. 61
Conclusion........................................................................ 62
Troubleshooting the i83 Receiver .................................62
1. Receiver won’t turn on: ............................................. 62
2. Is the receiver tracking satellites?............................. 62
5. The receiver won’t mount as a Disk Drive. ............... 62
Serial and USB IO Port Definitions ................................63
Serial IO Port Definition................................................... 63
USB Port Definition .......................................................... 63
Upgrading Firmware ....................................................63
GNSS OEM Reset .........................................................68
Web Interface Reset ........................................................ 68
Front Panel Reset ............................................................ 68
I83 Antenna Model ......................................................69
‘Slant Height’ to ‘Vertical Height’: .................................69
Manually Converting Heights ........................................ 70
Examples......................................................................... 70
Warranty .....................................................................71
Exclusions ......................................................................... 71
RMA .................................................................................. 72
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