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Geophysical Survey Systems, Inc.
SIR-2
CHAPTER 5: DATA PLAYBACK AND REVIEW
Selection of files to playback and setup of system display, processing and output during
playback are done in the PLAYBACK SETUP MENU block. Playback of data already
collected and stored on the disk is done via the PLAYBACK DATA MENU block.
5.1
Playback Setup Menu Block
This block is entered when the system is powered ON without an antenna, or from the
PLAYBACK DATA MENU block by entering the Setup command. It is entered from the
COLLECT SETUP MENU block by pressing the Collect/Playback
key.
5.1.1
Setup For Processing Of Playback Data
During playback, Gains, Horizontal Filters and Vertical Filters can be applied to the data
to improve interpretation.
SETUP
When this command is highlighted, a set of playback processing parameters that can be
set appears in the second column. The commands that will appear in the second column
are; Processing, Play All, Save Setup, Recall Setup, and Show Setup.
Pressing the Enter
key when Setup is highlighted will have no effect.
When Processing is highlighted, the following options appear in a menu box to the right:
GAIN
This function is used to apply an additional gain constant to the data files as they are
played back to the system or transferred to a computer. You can apply this gain if the data
acquired is too low in amplitude and difficult to interpret.
Activating this function will cause a parameter setup box to appear to the right. Use this
box to adjust the value of the gain to be applied.
arrow is used to increase the value of the
When setting the values of the gain, the Up
parameter and the Down
arrow is used to decrease the value of the parameter. The
and Left
arrows are used to increase or decrease the increment when setting
Right
the gain values. The gain values are in units of decibels (dB). Every 6 decibel increase is
equivalent to doubling the amplitude of all points in the signal.
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Manual #MN72-140A