Figure 1-4: Towfish Connector-At Towfish; Figure 1-5: Tpu Block Diagram; Transceiver And Processing Unit - Klein 5000 SERIES Operation And Maintenance Manual

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CHAPTER 1 Overview
1.4.3
The TPU provides signal processing along with the system control and data
telemetry functions. The TPU is composed of three circuit boards: an embedded
CPU board, a Demultiplexer board, and a Digital Signal Processor (DSP) board.
The TPU also contains a 200-volt towfish power supply and a TPU power supply.
A block diagram of the TPU is shown in Figure 1-5.
Series 5000 Sonar System Operations and Maintenance Manual
Figure 1-4:

Transceiver and Processing Unit

Figure 1-5:
Towfish Connector—at Towfish
TPU Block Diagram
P/N 11210060, Rev. 16