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 T H R E E
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R T M 3 2 0 5 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
setgpsrefpos
This command starts an interactive utility that allows you to set the accurate reference position of
RTM3205 This utility must be run as the root user. By default, the unit is configured to locate itself
using the GPS satellites. In some situations, visibility of the sky is limited and RTM3205 will not
be able to determine its position. In this case, you must determine an accurate WGS-84 position by
other means and input it using this command. Changes you make to the position take place imme-
diately. Refer to
Appendix E - Installing the GPS Antenna, GPS Reference Position
for details.
If
the GPS dynamic mode setting is ON (see
gpsdynmode
/
setgpsdynmode
commands), then running
this utility will have no effect.
In addition to setting a new reference position, you can also invalidate an existing one. We recom-
mend you do this if RTM3205 has an established position and then you move your GPS antenna.
You can invalidate an old position by setting the position mode to UNKNOWN. This will speed up
the time it takes for RTM3205 to acquire a new position and relock to the GPS signal. A cold start in
unknown position mode should take about 20 minutes to lock, assuming a decent antenna installation.
Command:
setgpsrefpos
RTM3205 reply: Interactive utility is started.
setinhibitoutputsmode
This command allows you to set the inhibit mode of the timing outputs. Timing outputs are pulse
rates and time codes. If it is set to ON, then all timing outputs will be inhibited (not present) until the
system is locked to the GPS signal. If it is set to OFF, then all timing outputs will be present at all
times. This command requires one argument: ON or OFF.
Command:
setinhibitoutputsmode ON
RTM3205 reply:
Inhibit Outputs Mode is ON
setrticmode (Optional)
This command is only available if the RTIC option has been installed. Refer to
Chapter 11 - Real-
Time Ionospheric Corrections
for more information.
setsigfltmask
This command allows you to enable or mask the Signal Loss Fault. Parameter for this command is
either MASKED or ENABLED. Setting this command to MASKED will prevent a signal loss fault
from creating an alarm condition. Some installations may need to mask this fault when operating the
NTP server as a Stratum 2 server. The factory default setting is ENABLED.
Command:
setsigfltmask MASKED
RTM3205 reply:
Signal Loss Fault Mask set to MASKED
settfomfltlvl
This command allows you to change the TFOM Fault Level. This is the threshold at which a signal
loss fault will be asserted. See
Appendix A - Time Figure of Merit
for more information. By chang-
ing the TFOM Fault Level you control the point at which the time error will produce a signal loss
Summary of Contents for RTM3205
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