Rack Mount Tpu - Klein 4900 Series Operation And Maintenance Manual

5.3

Rack Mount TPU

A block diagram depicting the functional relationships of all of the printed circuit
boards in the Rack Mount TPU electronics is shown in Figure 5-5. These boards
are located in the Rack Mount TPU electronics chassis as shown in Figure 5-6.
The printed circuit boards, along with their corresponding part numbers, are the
following:
• Demultiplexer board
• CPU board
• High Voltage Power Supply board
• 200V Power Filter board
• Topside Telemetry board
• 12V Power Filter board
• 12V Power Supply board
• LED board
Assembled into a single rack mountable 3U enclosure, the Rack Mount TPU
connects to the towfish directly or by way of an optionally supplied winch. 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.
sonar and sensor data from the towfish and outputs FSK downlink commands
along with 200 VDC power to the towfish while providing all of the external
input and output signal and data connections for the Rack Mount 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.
between the laptop computer running SonarPro and the tow fish. It executes a
real-time data server which outputs sonar and sensor data to and receives
commands from an external client, such as SonarPro.
High Voltage Power Supply board.
provides 200 VDC which is output to the towfish to power it.
200V Power Filter board.
filtering of the 200 VDC power for transmission to the towfish 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 towfish.
The Demultiplexer board demultiplexes the uplink
The CPU board functions as the command and data interface
The 200V Power Filter board provides noise
Rack Mount TPU
14105785-03
14105873
11700098
14104980
14105646-02
14105397
11700092
14105464
The High Voltage Power Supply board
5-9