QUICK START
GDP-32
24
Section 4, Page 19
September 2015
For AMT and CSAMT, the programs use the first orthogonal H-field component found for
the respective E-field. Hence,
Ex
must always precede
Hy
;
Ey
precedes
Hx
, etc., as
shown in the table above. The numbers beside the H-field designators in the
Sta/Ant
column are coil serial numbers for coil calibrations. The last digit signifies the antenna type.
Refer to the “
SCREEN: CHANNEL TABLE DISPLAY SCREENS
” chapters in Sections 11.3 and 13.3
for examples. A list of antenna types are included in Section 18.9 “
ANTENNA DESIGNATIONS”
.
Numbers beside the E-field designators in the
Sta/Ant
column are used as station
numbers.
For all programs, station values can optionally be used as an index to station files containing
actual locations, which are merged into the data during post processing.
4.15
CHECK FIELD CONNECTIONS
The Channel Table is also used to verify electrode and coil field connections prior to data
acquisition. Pressing
starts the Contact Resistance (CRES) function to measure the
resistance of all the channels. Pressing
starts the SCOPE display function to see a
graphical representation of the input signal for individual channels.
Note: The transmitter should be turned
OFF prior to pressing
, to check the
contact resistance. The transmitter should be turned ON when using the SCOPE feature,
.
After making field connections, and checking CRES and the SCOPE, it is often good practice to
take a single stack of data, and inspect the results before proceeding with acquiring more data. If
the results for the single stack do not appear consistent, press
to abandon the data.
Note: If the STACKS are set to any value above 1, the receiver will not stop allowing the
operator to inspect results and SEM values. With multiple STACKS, the receiver will continue to
obtain all stacks unless the operator presses
.to halt the process.
Es c ape
Es c ape
