Novatel OM-20000041 用户手册
C
Commands Summary
96
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
EXTERNALCLOCK FREQUENCY
Please see the Overview and Theory sub-sections under the
EXTERNALCLOCK
command to understand the steps
involved in using an optional external oscillator with a MiLLennium GPSCard.
For the chosen oscillator, one must select the clock rate using the
EXTERNALCLOCK
FREQUENCY
command. The
MiLLennium GPSCard only accepts a 5 MHz or 10 MHz external input. An internal frequency synthesizer
converts this input to 20 MHz, the actual clock rate required by the MiLLennium GPSCard (and that which is
generated by its on-board VCTCXO).
converts this input to 20 MHz, the actual clock rate required by the MiLLennium GPSCard (and that which is
generated by its on-board VCTCXO).
Syntax:
Example:
externalclock frequency 5
EXTERNALCLOCK FREQUENCY
clock rate
Command
Range
Description
Default
EXTERNALCLOCK FREQUENCY
-
clock rate
5 or 10
Set clock rate to 5 MHz or 10 MHz (Will
not allow values other than 5 or 10)
not allow values other than 5 or 10)
10