L-3 Communications Navigation Echosounder LAZ 5100 - Manual (Page 23)

Page 3-5
L-3 ELAC Nautik
3.3.1 DIGITAL SLAVE DISPLAY(S)
These are used to repeat water depth information at other parts of the ship where such information
is needed. A total of two Digital Slave Displays can be connected directly to the system.
NOTE: Echosounding Systems and remote indicators which detect and display the
water depth from a single momentary value per transmission pulse, e.g. digital
and pointer displays, can, over a period of time display false readings. This is
primarily valid in shallow water areas. For this reason, water depths displayed
in this manner must be compared with the graphic presentation at regular
intervals in order to guarantee the ship's safety.
IMPORTANT NOTE: While crossing steep slopes the echo evaluation might fail. A steady
depth display cannot be guarantied in this case. The LAZ depth display
will show the last evaluated depth value together with a question mark,
longer lasting errors will be indicated by a question mark without any
depth value. At the digital slave display "----" will be displayed in this
case.
3.3.2 PRINTER
A Printer can be connected to give a continuous hard copy of data presented on the display area
or to print out a hard copy of events from any time within a previous 24 operating hour period.
3.3.3 CONNECTION BOX
The Connection Box is connected up to the Display and Control Unit and provides the following
connections:
• a 2nd Digital Slave Display
• a blanking pulse output
• depth alarm relay contacts (potential free)