CXM543 User’s Manual
Doc.# 6001-0015 Rev 1.2
Page 6
In run mode, most of the CXM543 parameters, e.g. baud rate, sample rate,
etc. can be set by the user. The main differences between the system
operation in run and configure mode are as follows:
1. The CXM543 can only be calibrated in config mode (by issuing
the l command). The unit is always factory calibrated and
recalibration by the user is not normally required.
2. The unit always starts in the (known) baud rate of 9600 baud.
3. The unit always starts in command mode (as opposed to autosend
mode).
4. The data output format is selected to be A to D count mode.
The main functions of the config mode are to assure that the CXM543
communicates using a known baud rate (9600) and to enable calibration of
the system.
M
WARNING
Always operate the CXM543 run mode (when using a terminal program)
unless the baud rate setting of the unit is unknown or calibration of the unit
is required. The output of the CXM543 in the calibrated mode (M=C) is
only valid in the run and auto modes
.
4.2
System Checkout
After the CXM543 is operational and communicating with a computer, its
proper operation can be checked out by placing it on a flat, level, non-
magnetic surface. The non-magnetic nature of the surface is necessary to
prevent magnetic field errors, which will reduce the accuracy of the azimuth
reading. The roll and pitch readings are not affected by the magnetic field
present so a flat level surface, even if it is magnetic, can be used to check
roll and pitch.
Place the CXM543 on a level surface with the mounting flange down.
Rotate the system so that the connector is pointed North (use a compass to
accomplish this). Issue the following commands to the CXM543:
M = T <CR>
M = A <CR>
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