Klein Marine Systems, Inc. HydroChart 5000, Operation And Maintenance Manual

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Technical Description
1-11
Assembled into a single rack mountable 2U enclosure, the TPU connects to the
Sonar Head Unit. It also connects to the SonarPro Workstation over an Ethernet
connection and to customer supplied equipment, such as a GPS and an acoustic
positioning system.
Demultiplexer board.
The Demultiplexer board demultiplexes the uplink
sonar and sensor data from the Sonar Head Unit and outputs FSK downlink
commands along with 200 VDC power to the Sonar Head Unit while providing
all of the external input and output signal and data connections for the TPU. It
also provides the required recovery of signal and clock, detects trigger inputs
and 1-PPS signals, generates the trigger outputs, inputs NMEA 0183 data, time
stamps all of the data, and outputs the data to the SonarPro Workstation over
the Ethernet connection. 200 VDC power is input to the Demultiplexer board
from the 200V Power Filter board, and 12 VDC power is input from the 12V
Power Filter board. The Demultiplexer board also provides front panel
indicator outputs which drive the front panel LEDs on the LED board.
CPU board.
The CPU board functions as the command and data interface
between the SonarPro Workstation and the Sonar Head Unit. It executes a
real-time data server which outputs sonar and sensor data to and receives
commands from an external client, such as SonarPro.
200V Power Supply board.
The 200V Power Supply board provides
200 VDC which is output to the Sonar Head Unit to power it.
200V Power Filter board.
The 200V Power Filter board provides noise
filtering of the 200 VDC power for transmission to the Sonar Head Unit over
the coaxial tow cable. The filtered 200 VDC power is output to the
Demultiplexer board where it is combined with the FSK control signals and
output to the Sonar Head Unit.
Telemetry Interface board.
The Telemetry Interface board provides the cable
interface for the TPU. Specifically, the Telemetry Interface board performs the
following functions:
• Separates the uplink data signals, the downlink command signals and the
Sonar Head Unit power.
• Acquires sonar and sensor data and reformats the data as required for the
Demultiplexer board.
• Generates command and timing signals for the Sonar Head Unit.
• Matches the time references at the Sonar Head Unit and the TPU.
12V Power Supply board.
The 12V Power Supply board inputs 100–125 or
200–250 VAC and outputs 12 VDC to the 12V Power Filter board.