Klein Marine Systems, Inc. HYDROCHART 3500, Руководство по эксплуатации и обслуживанию

Страница: 53 / 86

5-1
CHAPTER 5: T
ECHNICAL
D
ESCRIPTION
This chapter provides an overview of the functional components and signal flows
of the TIU and the Sonar Head Unit using block diagrams, wiring diagrams and
descriptions of the connections and circuit board functions. This information can
be useful for troubleshooting, making repairs and adding optional equipment.
5.1 Topside Interconnect Unit
A block diagram of the TIU electronics is shown in Figure 5-1, and the electronics
chassis is shown in Figure 5-2. The TIU generates DC power for the Sonar Head
Unit and routes the Ethernet 100Base-T connection from a PC and 1PPS and
RS-232 serial connections from a navigation device to the Sonar Head Unit.
5.1.1 DC Power
A 30 VDC Power Supply in the TIU provides power to the Sonar Head Unit by
way of the D/C–OFF–A/C switch when 120 or 240 VAC, 50–60 Hz is connected
to the 120/240VAC connector. Similarly, with 24 VDC connected to the 24VDC
connector, the D/C–OFF–A/C switch switches this power to the Sonar Head Unit.
5.1.2 Ethernet 100Base-T
The TIU routes the Ethernet 100Base-T connection that is made to the LAN
connector from a PC directly to the Sonar Head Unit by way of the T/F connector
for command and control of the Sonar Head Unit and acquisition of data.
5.1.3 1PPS
The TIU routes the 1PPS connection that is made to the 1PPS connector from a
navigation device or time reference unit directly to the Sonar Head Unit by way of
the T/F connector and the deck cable. The 1PPS signal is used as a time reference
for the time tagging of data.
5.1.4 RS-232
The TIU routes the RS-232 serial connection that is made to the NAV connector
from a navigation device directly to the Sonar Head Unit by way of the T/F
connector and the deck cable for input of NEMA 0183 navigation message strings.