DATASONICS SIS-1500, System Manual

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SIS-1500 Seafloor Imaging System 3-7
SECTION 3 Setup and Deployment Processor Hardware Connections
SYNCH IN: DB-15 connector that connects to the
SYNCH OUT connector on the
workstation and is used to input the sonar
data and the clock signals for
synchronizing the sonar data.
VAC IN: AC power input connector that connects
to the AC power source.
VAC OUT: AC power output connector that connects
to the monitor.
Digital Multiplexer Connections
The Chirplink II Digital Multiplexer connectors and their description and use
are listed below.
Connector Description And Use
DECK CABLE: UHF connector that connects to the
75 meter Kevlar reinforced deck cable
and is used to input sonar data, tow
vehicle status information and sensor
data from the tow vehicle and to output
power, commands, and the sonar and
responder keys to the tow vehicle.
EXT KEY IN: BNC connector that connects to an
external source and is used to key the
sidescan sonar from the external source
when a 0-5 volt, 100
µ
sec minimum pulse
width signal is input. External Trigger
must also be selected through the
Chirpscan
3
software.
KEY OUT: BNC connector that connects to an
external source and is used to key the
external source. The output pulse is a
0-5 volt, 100
µ
sec wide pulse that occurs
at the start of each ping cycle.