CONTROLLED-SOURCE AUDIO FREQUENCY MAGNETOTELLURICS
Section 11, Page 3 May 2002
11.2 FIXED FUNCTION KEYS
One of the differences between the GDP-32
II
and its predecessor, the GDP-32, is the addition of
six fixed function keys located below the six soft function keys ( through ) at the
bottom edge of the LCD.
These keys are activated with the same menus as before, and are denoted as follows, from left to
right:
By pressing this key you enter the field data cache and can view data, escape back to
other menus to initialize or view other data caches, or output data to a PC from the
data caches. See DATA Section 7 for more details.
Exit the data taking routine and return to the main menu for selection of other
programs by pressing . When exiting the program at this point, the main
menu will display Back above the function key to enable the operator to
return to the CSAMT program, if desired.
Press this key to enter the calibrate and system checking program. See GDP Section
6.1, Calibration for more details.
Press this key to enter the automatic or manual gain setting and SP buckout menu.
Note: The CSAMT program does not automatically enable the front-end gain stage (G0). For
the best results in weak signal environments enable the receiver to use G0. The receiver will do
it automatically if Option 7 of the GAIN program is used.
Pressing this key will automatically buck out any self potential (SP) or amplifier
offset, for any channel that is turned on.
Press this key to measure the contact resistance or coil output resistance. See GDP
Section 6.3, Measuring Contact Resistance for more details.
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