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EM61LX2 Data Logging System (DAS70-AR2)
malization is not applied. Normalization factors are calculated dynamically during data col-
lection (regardless of Monitoring or Logging mode) and correction is applied continuously.
When N.C.C. type is selected then the program does not use transmitter current normal-
ization to reduce EM61-LX2 readings to the same current level. It is mandatory for setups
where external transmitter antenna is employed. Type N.C.C. can be also chosen when
transmitter current normalization is not desired for any reason.
No of Sensors
The EM61-LX2 can be used with one or two sensors connected. Select number sensors
(antennas) connected to the console. Selection is "One Sensor" or "Two Sensors" (default).
If two sensors are selected, the sensor number 1 is the one located on the left and sensor
number two is located on the right while facing both antennas in the direction of movement.
When one sensor is selected then it is considered by the program as the left sensor. Labels
"sensor one" as well as left sensor are "synonymous", as for example during specifying Filter
Factors below.
Filter Factor Left / Filter Factor Right
Filter Factors used to remove soil magnetic susceptibility in surveyed area must be specified
separately for each antenna, Left Coil (number 1) and Right Coil (number 2). Filter Factors
for each antenna can be determined automatically later during data acquisition stage. In
case automatic filter determination won't be used, values entered here will be used during
data collection and embedded in data file.
Default value for each filter factor is 310, and accepted range of filer is 100 to 900.
Units
Two selections are available:
Meters
or
Feet
.