Operating displays
ENVI-MAG Manual A3-31
Instrument
-*MAG*- hh:mm:ss
TOTAL GRADIENT LN:llllld
mmmmm.m ggggg.g ST:sssssd
mmmmm.m ggggg.g sssssd
mmmmm.m ggggg.g sssssd
mmmmm.m ggggg.g sssssd
MEMF: nn%
BATT: bbb
Figure A-26 Page 2 of the numeric data display — signal strength.
Display Item Description
TOTAL The magnitude measured by the lower total-field sensor
in nanoTeslas (nT).
The most current reading is the
top
most followed by
preceding readings.
NOISE
A number indicating the quality of the reading.
It is based on the noisiness of the individual periods of
the precession signal. The
smaller
the value the
better
the quality of the reading.
GRADIENT
The magnetic gradient between the two sensors.
Expressed in nT/m.
TIME The current time in hours:minutes:seconds.
It is used to time stamp each reading.
LN
The line number on which this measurement took place.
The value consists of the numeric and directional parts.
ST
The station number to which the respective magnetic
data applies.
The value consists of the numeric and directional parts.
MEMF
The percentage of free memory.
Measurements can be made when the memory is full,
however the data is no longer recorded.
Average Signal
Strength
Precession
Signal Strength
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