SeaTrac Serial Command Interface Reference
Page 76
Response/Status Message Parameters
Parameter Type Description
MSG_ID
identification code (CID_STATUS)
STATUS_OUTPUT
A bit-mask specifying which information is included
in the following status output message, so any
decoding algorithm can correctly parse the
message record.
TIMESTAMP
UINT64
The value of the beacon’s clock (set to zero when
the beacon was powered up – not rebooted!).
Values are encoded in milliseconds, so divide by
1000 for seconds.
Environmental Fields
If the message STATUS_OUTPUT parameter contains the ENVIRONMENT bit (see
), then the following fields are sequentially appended to the message record…
ENV_SUPPLY
UINT16
The beacons supply voltage.
Values are encoded in milli-volts, so divide by 1000
for a value in Volts.
ENV_TEMP
INT16
The temperature of air/water in contact with the
diaphragm of the pressure sensor.
Values are encoded in deci-Celsius, so divide by 10
to obtain a value in Celsius.
ENV_PRESSURE
INT32
The external pressure measured on the diaphragm
of the pressure sensor.
Values are encoded in milli-bars, so divide by 1000
to obtain a value in Bar.
Please note, the specification of pressure reading is
0.5% of the sensors full-scale value, so for a 200
Bar sensor the tolerance applicable to this value is
±1 Bar (~10m).
ENV_DEPTH
INT32
The computed depth based on the measured
environmental pressure.
Values are encoded in deci-metres, so divide by 10
for a value in metres.
ENV_VOS
UINT16
The value of Velocity-of-Sound currently being used
for computing ranges.
This may be either the manually specified VOS from
settings, or the auto-computed value based on
pressure, temperature and salinity.
Values are encoded in deci-metres-per-second, so
divide by 10 to obtain a value in metres-per-
