Arbiter Systems 120A, User Manual

Page: 34 / 35

7.4 Troubleshooting
Locked and Unlocked LEDs are both off: Check that power supply is correct (8-32 Vdc). Using an AC supply can
cause the Model 120A to power on but continually reset only illuminating the Power LED.
Model 120A will not lock to satellites: Check the antenna cable and antenna for any damage. Use the ASCII status
command to check for faults and tracking information.
Fault LED is illuminated
IRIG-B Time is incorrect: Check settings to make sure the unit is set for the correct time reference, UTC or Local. If
Local is selected, verify local offset and daylight savings settings are correct.
7.5 Glossary
Broadcast – Serial data sent out over the serial port once per second.
DST - D ay S avings T ime, the
GNSS - Global Navigation Satellite System is is a general term describing any satellite constellation that provides
positioning, navigation, and timing (PNT) services on a global or regional basis. Including GPS, BeiDou, Galileo and
GLONASS
BeiDou is a global GNSS owned and operated by the People's Republic of China.
Galileo is a global GNSS owned and operated by the European Union.
GLONASS is a global GNSS owned and operated by the Russian Federation.
GPS is a global GNSS owned and operated by the United States
Local Offset – Is the difference between local time and UTC time determined by time zones.
OOL – Out of lock is the term used when satellite signals are not available and the clock is unable to receive time.