Klein 4900 Series Operation And Maintenance Manual page 78

5-12
CHAPTER 5 Technical Description
Topside Telemetry board.
interface for the Rack Mount TPU. Specifically, the Topside Telemetry board
performs the following functions:
• Separates the uplink data signals, the downlink command signals and the
• Acquires sonar and sensor data and reformats the data as required for the
• Generates command and timing signals for the towfish.
• Matches the time references at the tow fish and the Rack Mount TPU.
12V Power Filter board.
of the 12V power supply for the Demultiplexer board.
12V Power Supply board.
200–250 VAC and outputs 12 VDC to the 12V Power Filter board.
LED board.
mounts directly to the back of the front panel and connects to the
Demultiplexer board over a single cable.
Series 4900 Sonar System Operations and Maintenance Manual
towfish power.
Demultiplexer board.
The LED board contains all of the front panel LED indicators. It
The Topside Telemetry board provides the cable
The 12V Power Filter board provides noise filtering
The 12V Power Supply board inputs 100–125 or
P/N 11210091, Rev. 02