Beam Width & Direction Adjustment - Interphase Proble Operation Manual

RESET
FULL SECTOR
SCAN
RESET
FAR FORWARD
SECTOR SCAN
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Beam Sector Width & Steer Adjustment
The large rotary knob labeled "BEAM" can be used to
both adjust the beam scanning sector width and the
direction of the scan. For example, you may not want to
scan the full 90 degree sector from the surface ahead to
beneath the boat, but instead only to scan from the surface
ahead to a certain depth below the surface.
Press the soft key labeled "BEAM" to bring up a sub-
menu of beam adjustment choices. By pressing the soft
key labeled "WIDTH", the rotary "BEAM" knob can be
used to adjust the scanning sector width. The actual
sector size will be shown on the display as the BEAM
width is adjusted.
By pressing the soft key labeled "STEER" the resulting
sector can then be steered throughout the possible 90
degree sector (from directly beneath the boat to the
surface ahead).
The RESET button can be used to quickly select three
popular scanning sectors. If the RESET button is pressed
once, the Probe will return to the full 90 degree sector
scan (from straight ahead to below the boat), pressing
RESET again will put the Probe into one of three far
forward sector scans (each sector is approximately 12
degres wide).
The RESET button cycles through the possible scan
sectors as shown at left.
Beam Speed (Resolution)
In its normal scanning mode "NORM", the Probe will
send out 50 forward beams and will alternate between a
forward beam and the down-looking beam. In the
"FAST" position, only 30 beams will be used and the
Probe will send 5 forward scanning beams for every
down-looking sample, providing maximum scanning
speed with the lowest resolution. In the "DETAIL"
mode, the Probe sends out 90 beams, one every 1 degree
for the maximum resolution, but also at the slowest speed.