JRC JLN-652 Doppler Current Meter without Monitor
The new JLN-652 Doppler current meter integrates acompelling combination of
function and features, packedinto a compact space-saving design, enabling quick
andaccurate acquisition of speed and tidal current data.
3D twist mode
You can view the current direction and speed in real time with
the twist mode. With this advanced feature, an operator is able to assess
current speed and direction, enhancing the timing on when to deploy the nets in
the water. Naturally, the twist display mode is accompanied with a wide range of
information, such as current speed range, depth range, temperature history from
external sensor and more.
Up and down current
JRC engineers listened closely to feedback given by captains and
realized yet another unique function in this class of current meters. The
JLN-652 is able to accurately measure up and down current, particularly useful
to predict the sinking ratio of your nets by following the natural motion of the
50 independent measuring layers at deep current
The JLN-652 Doppler current meter has the ability to process and display
continuous tidal currents of 50 independent measuring layers down to maximum 200
meter depending on sea condition. To simplify matters, the user only has to set
five depths layers (A, B, C, D, E), of which each layer is measured in four
directions. The 50 layers are automatically set relative to depth which has been
indicated. The user can select the depth of each layer, showing different
information. You can also select bearing＊1 displayed as North-up
(with true north at the top of the display) and Head-up (with bow at the top of
Automatic speed relative to bottom
Normally run automatically, the new JLN-652 allows bottom tracking with
depths up to approximately 250＊2 meters, measuring direction and
speed relative to the sea bottom. If sea bottom becomes too deep, it
automatically switches to water tracking mode or through GPS mode, depending on
Bottom current tracking
The bottom current layer (E) has the ability to automatically
shift and display the current close to bottom following the contours of the sea
bottom. This is of great help for the operator when fishing in areas with
frequently variable depth.
- ＊1 : Heading input necessary
- ＊2 : Actual depth value depend on sea and bottom condition
The new JLN-652 allows you to carry out all operations simply by
using the keyboard. The layout has a full complement of keys, including direct
STC and GAIN, to adjust noise under surface of the water level and receiver
sensitivity respectively. The keyboard also has one-touch menu keys to access
different display modes instantly as well as a special frame-selector to
navigate quickly through a variety of menu items on display.
You can view fish echoes in four-directions, two-directions ahead, or in any
one direction, allowing for easy fish tracking. Just as any typical fish finder,
you can set the display to present fish echo and seabed condition simply by
adjusting the sensitivity.
There is a wide range of alarms available on the JLN-652. With all alarms,
for example, when depth becomes shallower than the parameter set, a warning
message pops up, allowing the operator to take action, contributing to safer
navigation and more efficient fish finding.
High resolution display
The Doppler current meter not only measures data with unmatched accuracy but
also features a high resolution output of 1024 by 768 pixels (XGA) which
provides excellent and efficient tidal analysis.
Black box configured
The JLN-652 consists of a display (option), processor and
keyboard, allowing for a flexible installation approach in confined spaces. For
those who prefer to specify their own display, the JLN-652 allows you to choose
what type and size of display to connect to the unit, as long as it supports XGA.
This Doppler current meter has 16 comprehensive and easily
readable display modes for efficient tidal analysis. With our dedicated keyboard
you can navigate through all common used tasks effortlessly.
Our standard scope of supply has been set as a minimum
configuration. This allows ease of upgrading from previous models (see left). In
the case of a new installation, simply select the transducer and installation
accessories from the option list.
The new Doppler current meter integrates two-way interfacing, allowing you to
easily connect a wide range of additional (NMEA) navigation equipment. Up to
1000 memory points of current and track data can be saved on USB memory. (USB
In the box
- Spare parts
1. Actual depth values depend on sea and bottom conditions