Versa Electronics
www.marcumtech.com
DYNAMIC
– This Marcum exclusive feature functions similarly to the “Auto Range”,
but fine tunes your range setting even farther. The Dynamic Depth will maximize
the space on your display by utilizing a variable range that will always be just slightly
deeper than the actual depth. For example, if you were fishing in 23 feet of water,
the Dynamic Depth feature will automatically create a custom range of 0 - 25 feet.
Similarly, if you were in 29 feet of water, the Dynamic Depth range will be 32 feet.
The Dynamic Depth range will not go shallower than 10 feet.
MANUAL DYNAMIC
– This functions similarly to the DYNAMIC DEPTH, but allows
the user to select the depth range. For instance, say you start out in AUTO range
and you quickly learn that the water is 21 feet deep. The AUTO range will have
selected the 0-40 foot range. To fine tune your display, press the RANGE
button, and highlight MANUAL DYNAMIC. Now start pressing the UP/DOWN
buttons to get to the desired DYNAMIC DEPTH range. If the water is 21 feet
deep, you would select 22 feet. Now the DYNAMIC DEPTH has created a 0 – 22
foot range, utilizing virtually 100% of your display.
We offer the manual range functions because in some circumstances the AUTO
range functions can behave erratically. In situations where there is heavy
weedgrowth, uneven bottom contours, or very shallow water, it is suggested that
the user manually selects a fixed depth range.
ZOOM
– The ZOOM button allows you to select the upper range of the portion of
the water column you would like to zoom in on. The actual size of the Zoom
window can be adjusted in the Main Menu.
The Zoom feature allows you to focus the display on a specific depth within the water
column, and can be a great benefit in a variety of fishing situations. See the separate
ZOOM section below for more info on the ZOOM. Whenever you are utilizing the
ZOOM menu, keep in mind that it “times-out” after 6 seconds.
IR (INTERFERENCE REJECTION)
– The Interference Rejection system is
designed to suppress competing return signals from other sonar units being used
within close proximity. When other sonar units are causing interference to the
display of the Digital Sonar, activate the IR feature by depressing the IR button
located on the control panel of the Digital Sonar. Interference is indicated by
unusual signals flashing or scrolling across your display.
There are 12 levels, or channels, of interference rejection. Press the IR button
once to open the IR window, now use the UP/DOWN buttons to select the
desired level of IR. The correct level of IR will be achieved when the display is
clear of display clutter. In some extreme cases, clutter will be greatly reduced but
not totally eliminated.
Anytime two or more sonars are being operated in proximity to each other,
there is the potential for interference. Deep water and hard bottom will increase
the likelihood that one or more of the competing sonars will experience
interference. Besides experimenting with different levels of IR, the anglers
experiencing interference can also try having their transducers set at
different levels, going to narrow cone angles, and reducing gain or
sensitivity settings.
