Beam Width & Direction Adjustment - Interphase Proble Operation Manual

RESET
(Full Sector Scan)
RESET
(Far Forward
Sector Scans)
42
Beam Sector Width & Steer Adjustment
The large rotary knob labeled "BEAM" can be used to
both adjust the beam scanning 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
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 a far
forward scan and pressing it a third time will set select
another far forward scan. Each of the far forward scans is
approximately 12 degrees wide.
The "RESET" button cycles through the three possible
scan sectors, as shown at left.
Beam Speed (Resolution)
In it's 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. In the "DETAIL" mode, the
Probe sends out 90 beams, one every 1 degree for the
maximum resolution, but also at the slowest speed.
adjust the scanning