Interphase Twinscope Operation Manual page 51

RESET
FULL SECTOR
SCAN
RESET
FORWARD
SECTOR SCANS
key labeled "WIDTH", the rotary 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 horizontal sector .
The RESET button can be used to quickly select three
popular scanning sectors. If the RESET button is pressed
once, the Twinscope will return to the full 90 degree
horizontal sector scan , pressing RESET again will put
the Twinscope into one of two preprogrammed forward
sector scans.
The RESET button cycles through the possible scan
sectors as shown at left.
Beam Speed (Resolution)
In its normal scanning mode "NORM", the Twinscope
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
Twinscope will send 5 forward scanning beams for every
down-looking sample. In the "DETAIL" mode, the
Twinscope sends out 90 beams, one every 1 degree for
the maximum resolution, but also at the slowest speed.
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