Interphase PC/View, Operation Manual

Page: 28 / 56

28
VERT: Vertical Scan Display
The VERT display shows the image created by
the vertical scanning transducer elements. This
array scans through a maximum of 90 degrees in
a sector starting horizontally in the direction that
the boat is heading and ending vertically beneath
the transducer (see figure at left).
The vertical scan is shown with the transducer at
the upper left corner of the display window with
the selected range extending to the lower right
corner of the window. As a result, the scale bars
will usually indicate maximum distances that are
less than the selected range.
HORZ: Horizontal Scan Display
The HORZ display shows the image created by
the horizontal scanning transducer elements.
This array scans through a maximum of 90 de-
grees in a sector centered about the boat’s head-
ing and tilted downward from horizontal by
about 10 degrees (see figure at left, center).
The horizontal scan is shown with the transducer
at the bottom of the display window and the se-
lected range extending to the top of the window,
regardless of the window’s width. Thus, data
will be clipped on the sides of a tall, narrow dis-
play (see figure at bottom left).
DOWN: Downlooker Display
The downlooker display shows the region di-
rectly beneath the boat over time. The right edge
of the display always shows the most recent ping.
Since PC/View does not know boat speed, the
downlooker display cannot be used to determine
horizontal distances. Thus, there is no horizontal
scale bar in the downlooker display.
PC/View can extract DOWN data from either the
horizontal array or the vertical array. This is
because the horizontal array includes a separate
down-looking transducer for the purpose of col-
lecting depth information.
Scanning Directions.
Vertical Scan mode
shown above and
Horizontal Scan
mode below