Frequently asked questions
8-20 Chapter 8: Service 98-141779-G
8.8 Frequently asked questions
8.8.1 Overview
The following sections are a collection of frequently asked questions with answers.
• Q1: What is OTC and what happens?
• Q2: The antenna points towards the wrong Inmarsat GX satellite, what do I do?
• Q3: There is an ACU WARNING BUC calibration outdated, what do I do?
• Q4: How do I start a manual OTC procedure?
• Q5: What is the login to the GMU web server?
• Q6: GMU stays in OTC calibration without end, what can I do?
• Q7: How do I delete the BUC calibration file in the GMU?
• Q8: How do I log in to the GMU Linux shell?
• Q9: ACU stays in BUC CALIBRATION state almost forever, what can I do?
• Q10: Why does the DASHBOARD not show any satellite values?
• Q11: How do I manually upload a new TERMINAL_OPT.json configuration file to the
GMU?
• Q12: BUC calibration reports: ERROR: Not Enough Modem Power During Ramping,
BUC Not ready For OTC.
• Q13: What is my IP address for my PC to access the Internet?
• Q14: How do I find the User VLAN?
• Q15: I do not have Internet access using the IP address for the UserNET VLAN. Why?
• Q16: How can I confirm that the GMU is authenticated correctly to the Inmarsat GX
network?
• Q17: The antenna is pointing in a wrong direction, what is wrong?
• Q18: How do I perform an azimuth calibration?
• Q19: After successful azimuth calibration the antenna is still pointing in a wrong
direction, what is wrong?
• Q20: Why do I get the 08A02-0 ADM WARNING GX Core Module temperature?
• Q21: Why do I get the 08A03-0 ADM ERROR GX Core Module power?
• Q22: Why do I get the 08A04-0 ADM WARNING iDirect modem; ACU detected a
warning/error in the iDirect modem.
• Q23: OTC reports: ERROR: BUC Local Oscillator Unlocked, BUC Not ready For OTC.
• Q24: Why do I get the 08075-0 ADM WARNING Rx cable calibration?
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