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Description of Error Conditions
Command Parameter Invalid
– contains an invalid or out of range value.
Command invalid or not available on current model of TCM2
– is not recognized by the
TCM2.5/2.6. The syntax is incorrect, or you have entered a command which is not supported by the
TCM model you are using.
Inclinometer out of range
– the inclinometer sensor is detecting an attitude that is outside of its
operational range of maximum pitch and roll. When this error flag is raised, compass and inclinometer
output data should be disregarded.
Magnetometer out of range
– the magnetometer sensors are detecting an ambient magnetic field that
exceeds the maximum field measurement range of the magnetometer in any of the three axes.
Compass Operating Modes
Standby Mode
The TCM2.5/2.6 is in Standby mode when you issue an h (
Halt
) command or ax (
Warm
Reboot
). You
may configure and verify the TCM2.5/2.6’s user parameters in the Standby mode (set sampling rate, filter
parameters, and so on.) You may also query the TCM2.5/2.6 for single updates of compass heading,
pitch and roll, magnetic field strength, and temperature.
Sampling in Standby Mode
You can receive data from the TCM2.5/2.6 sensors from the
h
(Halt Continuous Sampling, Enter
Standby) mode. You may wish to do this if you are manually operating the TCM2.5/2.6 for evaluation
purposes, or if the TCM2.5/2.6 only needs to be polled periodically. With the TCM2.5/2.6 in the Standby
mode, you can query sensor data by either issuing single parameter updates with commands like
c?
(Compass Update),
m?
(Magnetometer Update) or you can receive output word updates by issuing the
s?
(Single Update of Output Word) command. The output word may be configured as previously
described in “TCM2.5/2.6 Standard Output” to provide either NMEA formatted compass data, or the
TCM2.5/2.6 Standard output word, which presents any combination of TCM2.5/2.6 sensor data that you
wish to receive. The single parameter updates allow you to immediately query any sensor data.
Continuous Sampling Mode
After configuring the TCM2.5/2.6 in the Standby mode, issue the
go
command to place the TCM2.5/2.6
into Continuous Sampling mode. In this mode, the TCM2.5/2.6 samples its sensors, processes, and
outputs this sensor data at a rate determined by the SP parameter, default is 8 Hz.
