System Operation
Main Menu
Range
Filters Menu
Filter
MaxRate
MinRange
TxPower
MaxRange
TxPulse
MinDepth
RxGain
MaxDepth
GainMode
HeadTilt
AutoGain
Ocean Menu
Spread
Display Menu
Color
Absorb
Contrast
Velocity
Dots
Grid
Freeze
Menu Off
Off
Two additional I/O and communications menus Config and Modes are available
via the BITE screen (refer to paragraph 3.9, 3.10, and 3.11 for a description of
these menus and the BITE functions). The following paragraphs describe each
Operation Menu block item and the selections offered.
3.4 Main
Menu
This menu is the primary sonar control point. The selections are:
3.4.1 Range
The Range setting determines the ping rate and how far down the 8101 system
will "see". This menu item allows the operator to select any one of the system's
range settings. See Table 6 for range scale vs. ping rate values.
3.4.2 MaxRate
This menu selection allows the operator to limit the number of pings per second
and therefore, the associated bathymetry packet output transfer rate. The ping
range available is from 1 to 40 per second. Selecting an Ethernet output format,
rather than a serial format, will allow the maximum transfer rate to be achieved.
NOTE
The number of output profiles per second is primarily governed by the update
(ping) rate which, in turn, is controlled by the range selected. Ping rate is deter-
mined by the 'round-trip time' - the time taken for the acoustic energy from the
transmit array to travel to the maximum range selected, and return to the receive
array. This time is also strongly affected by the local speed of sound in water.
See Table 6 for ping rates at a sound velocity of 1500 meters/sec.
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SeaBat 8101 Operator's Manual
3-5
Version 3.02
