EndRun Sonoma N12, Руководство пользователя

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S o n o m a U s e r M a n u a l 76
C H A P T E R N I N E
77 S o n o m a U s e r M a n u a l
C O N T R O L A N D S T A T U S C O M M A N D S
EFCDAC is the system oscillator Electronic Frequency Control 20-bit DAC value, 0 to 1048575
with larger numbers implying higher oscillator frequency. Typical range is 320000 to
680000.
C/No is the received GPS Carrier Signal-to-Noise Ratio, 0.00 to 99.9, measured in dB in a 1Hz
bandwidth. Typical range is 30 to 45.
FLTR is the fault status for the GPS Receiver. (This field is not shown in units shipped before
June 2017.)
This is a numeric value consisting of four hexadecimal characters where
each bit indicates a particular fault. Assertion of any of these bits will light the Alarm
LED. Bit definitions are shown below. Decoding the bits can be difficult for non-
programmers. For a more user-friendly method of reading the fault status use the
faultstat
command. For details on each receiver fault see
Appendix G - System
Faults .
Bit 3 Bit 2 Bit 1 Bit 0
Char 0 FLASH Writes FPGA
Configuration
GPS Signal GPS Receiver
Oscillator DAC
Char 1 GPS Receiver
Oscillator
GPS Reference
Time
Local Oscillator
Synthesizer
Local Oscillator
Synthesizer Tuning
Char 2 N/A GPS Receiver
Oscillator PLL
GPS Antenna
Open
GPS Antenna
Short
Char 3 N/A N/A N/A N/A
FLTS is the fault status for the GPS Subsystem. This is a numeric value consisting
of four hexadecimal characters where each bit indicates a particular system fault.
Assertion of any of these bits will light the Alarm LED. Bit definitions are shown below.
Decoding the bits can be difficult for non-programmers. For a more user-friendly method
of reading the fault status use the
faultstat
command. For details on each system
fault see
Appendix G - System Faults
.
Bit 3 Bit 2 Bit 1 Bit 0
Char 0 FLASH Writes FPGA
Configuration
GPS Signal System Oscillator
DAC
Char 1 GPS Antenna Subsystem
Communication
GPS Reference
Time
GPS Receiver
Communication
Char 2 N/A System Osc PLL Secondary Power
Supply
Primary Power
Supply
Char 3 System Power/
Configuration
N/A N/A N/A
The Primary and Secondary Power Supply bits are only used if your Sonoma has the Dual-Redundant
Power Supply option.
The example reply below indicates that there has been a period without tracking a GPS signal that
exceeded the time-out period, that there was a FLASH Write Fault and that there is an Antenna Fault.