14
Rev 20201007
Interference Rejection:
The Interference Rejection system is
designed to suppress competing return signals from other sonar
systems being used within proximity.
When other sonar systems are causing interference to the display of
the MX-7GPS, activate the IR feature by depressing the IR button
located on the control panel of the MX-7GPS. 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
PLUS/MINUS 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 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, different Gain modes and reducing sensitivity settings.
Target Adjust:
This feature allows the angler to change the size of
the return signals being displayed on the monitor without increasing
the sensitivity. The TARGET ADJUST feature will give you the
smallest, signal size at “0”, and the signals displayed will get thicker
as you increase the TARGET ADJUST. This feature should be used
in conjunction with the SENSITIVITY to fine-tune your display.
Those who have a hard time seeing, as well as those who fish from
a standing position will really appreciate the “TARGET ADJUST”
feature.
Range:
The MarCum MX-7GPS has nine different fixed ranges, as
well as the ability to create custom ranges using the Dynamic Depth
feature. The Range settings can be found under the Sonar Setting
Menu.
