R T M 3 2 0 5 U s e r M a n u a l
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C H A P T E R F O U R
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R T M 3 2 0 5 U s e r M a n u a l
H T T P S I N T E R F A C E
Receiver: Oscillator Page
This page shows system oscillator control information for the GPS Subsystem:
Oscillator Status
Oscillator Type
This field shows the system oscillator type that is installed in the RTM3205. It
will be either the MS-OCXO, HS-OCXO, or US-OCXO.
DAC
The system oscillator control DAC value indicates the frequency control setting.
The system automatically sets this value to remove frequency errors. Values
may range from 0 to 1,048,575. Values close to the minimum or maximum will
set the DAC fault flag.
Measured
This field shows the last measured time offset of the GPS Subsystem relative to
Time Error
GPS while locked, in second.
Time Deviation
This field shows the time deviation (TDEV) of the offset measurements in
seconds. The tau associated with this measurement is one second, which is the
update interval of the position fixes received from the GPS Receiver.
Oscillator
This field shows the regression-computed system oscillator ageing rate per day
Ageing Rate
(several-hours delay before the first measurements are displayed).
Control Loop TAU This field shows the system oscillator control loop averaging time constant, in
seconds. It’s value is automatically adjusted to maintain optimum offset and
stability.
Coast Duration
This shows the number of seconds the GPS Subsystem has been in coast mode,
while RTM3205 is unlocked to GPS. Coast mode is another term for holdover
mode.
Estimated Time
This is the estimated time error of the GPS Subsystem when in coast/holdover
Error
mode, in seconds.
Internal Chassis
Internal chassis temperature in °C.
Temperature
Clock Page
This page shows the configuration of the RTM3205 except for any optional I/O which is listed on the
I/O page.
Clock Configuration
Time Mode
This field shows the current time mode setting. Possible settings are UTC, GPS
and Local. Since NTP always uses UTC, this setting only affects the Time Code
Output and optional Serial Time Output. To change the time mode setting use
the
systimemodeconfig
command via the console port.
Summary of Contents for RTM3205
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