3-16 3.0 SETUP AND ACTIVATION
4125 SIDE SCAN SONAR SYSTEM 0004823_REV_F
3.10.2 Connecting the Topside
Follow the instructions in sub-sections 3.10.2.1: CONNECTING THE 4125-P PORTABLE TOPSIDE PROCESSOR OR
3.10.2.2: CONNECTING THE 4125-RM RACK MOUNT TOPSIDE depending on the topside option you have:
3.10.2.1 Connecting the 4125-P Portable Topside Processor
To connect the 4125-P Portable Topside Processor:
1. Verify that the 4125-P Portable Topside Processor is not connected to AC power.
2. Verify that the tow cable is properly connected and attached to the towfish, and then connect the
tow cable to the TOW CABLE connector.
3. If using the wired ETHERNET connection, connect the ETHERNET cable to the ETHERNET connector
of the laptop computer. The ETHERNET cable may be extended up to 100 feet using a Category 5
ETHERNET crossover or straight patch cable.
4. Do not make this connection if the wireless ETHERNET connection will be used, as only one
ETHERNET connection can be connected or enabled at the same time.
5. If a printer will be used, connect the printer to the laptop computer through a USB ETHERNET
adapter.
6. If a navigation system will used, connect the navigation system serial output to COM 1 or a USB
port of the laptop computer.
7. Do one of the following to connect power:
Connect the AC power cable to the AC INPUT connector and to the AC power source.
Connect the red clamp of the DC power/ETHERNET cable to the positive terminal of the DC
power source, and connect the black clamp to the negative terminal.
Connect both the AC and DC power sources as described above.
8. Connect the laptop computer power supply to the computer and to the AC power source.
3.10.2.2 Connecting the 4125-RM Rack Mount Topside
To connect the 4125-RM Rack Mount Topside:
1. Verify that the 4125-RM Rack Mount Topside is turned OFF.
2. Verify that the tow cable is properly connected and attached to the towfish, and then connect the
tow cable to the SEA CABLE connector.
3. Connect the ETHERNET cable to the user-supplied computer and the DATA connector of topside.
The ETHERNET cable may be extended up to 100 feet using a Category 5 ETHERNET crossover or
straight patch cable.
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