Geometrics G-877, Operation Manual

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4.5 G–877 MAGNETOMETER COMMAND CODES
Note: Set the “Caps Lock” key in order to control the magnetometer.
M Run mode (0=config, 1=magnetometer) : 1
Determines at “power on” if the magnetometer will begin operation in the configuration mode or the run mode. This
feature may be useful in certain battery-powered applications.
Q If pressed while in the magnetometer run mode, will switch from the run mode to configure mode (press and hold
down until the magnetometer recognizes the command).
If pressed while in the configure mode two choices appear:
1) to reload from FLASH (pressing a “1” will cause the user saved defaults to be reloaded)
2) to reload factory settings (pressing a “2” will allow a reload of the factory settings)
D Pressing will cause all of the current system default parameters to be displayed on the CPU screen. This is useful
when using a terminal emulator to allow capture of this information to a file.
S Pressing will cause any changes made to system parameters to be saved to the FLASH. If not pressed before “power
off” any changes will be lost.
R
Pressing will exit the configuration mode returning to the run mode.
C
Cycle time in seconds : 1.5 in seconds
T Initial tuning in kilo gammas : 50.0 In K
Auto tuning (0=off, 1=on) : 0.0 Logical
Max auto tuning in kilo gammas : 100.0 In K
Min auto tuning in kilo gammas : 20.0
In K
F Pressing will cause the initiation of the process of defining the format of the data string that is transmitted
by the Magnetometer. Each paragraph below represents a data item that may be included in the data string. For each
data item its individual format (e.g. ######.##) and position in the data string may be defined. Each data item will be
presented by the Magnetometer one at a time showing the current definition for acceptance or new definition. After
any changes desired are made press the <Enter> to accept the changes and proceed to the next data item. The current
definition may be accepted by pressing the <Enter> key. Each data item must be acknowledged by pressing the
<Enter> key until the Magnetometer has presented all the data items. Note that some data items in the data string with
a “0” (zero) position setting are not transmitted.
Preamble := [NOTE: This “=“ is used by the MagLogLite

software and may be different for other logging
software.] The preamble is factory set to “=“ but may be changed to be compatible with other data
logging software.
Example Configuration file for G-877 s.n.006 12-27-00
Run mode (0=config, 1=magnetometer, 2=mag half duplex) :1
Cycle time in seconds : 1.5
Initial tuning in kilo gammas : 50.0
Auto tuning (0=off, 1=on) :0
Max auto tuning in kilo gammas :100.0
Min auto tuning in kilo gammas : 20.0
(following is data transmission format control)
Preamble :=
field display position(1=1st, 2=2nd, .. etc) : 1
field display format :######.##
time display position(0=none,1=1st, 2=2nd, .. etc) : 0
time display format :#####.#
G–877 MARINE MAGNETOMETER OPERATION MANUAL
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