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4. If a printer will be used, connect the printer to the user-supplied computer through a USB
ETHERNET adapter.
3.11 System Activation and Test
After the connections to the topside processor have been completed, the 4125 Series Dual-frequency Side
Scan Sonar System can be activated and some pre-deployment checks performed prior to deployment of
the towfish as a test to verify that the system is operating properly.
When performing the system activation and test, refer to sub-section 3.5 TOPSIDE CONTROLS AND INDICATORS
for the location and description of the controls and indicators on the topside processor. In addition, should
the system not activate properly or the pre-deployment checks fail, refer to 5.0 TROUBLESHOOTING for
assistance on how to isolate and correct the problem.
3.11.1 Preparing a Wired ETHERNET LAN Connection
The wired ETHERNET LAN connection is made by connecting the supplied ETHERNET cable from the 4125-
P Portable Topside Processor to the laptop computer. If an ETHERNET Category 5 cable greater than 10
meters is connected instead, the Network Adapter on the laptop computer should be set to 10 Mbit/s,
Full Duplex.
In addition, the 4125-P Portable Topside Processor auto senses straight and crossover ETHERNET cables,
along with 10 or 100-Mbit/s connections. Therefore the laptop computer’s LAN adapter can be set to
AutoSense for LAN speed and duplex settings.
1. To prepare the laptop computer to use the wired ETHERNET connection:
2. Turn on the laptop computer and the 4125-P Portable Topside Processor.
3. Click the Wireless Networking icon on the Windows Desktop or on the System Tray, and then
disable it. Or, if there is a switch on the laptop computer, turn it off.
4. Verify that the ETHERNET cable is connected to the ETHERNET connector of the 4125-P Portable
Topside Processor and to the ETHERNET connector of the laptop computer.
5. Click the ETHERNET LAN icon on the Windows Desktop or the System Tray, and then enable it.
The ETHERNET LAN should indicate "Connected" in the Local Area Network Properties Box. If not,
check all the connections and verify that the TCP/IP address setting is correct as described in sub-
section 3.7: TCP/IP ADDRESS SETTINGS. Also verify that the ETHERNET LAN is enabled and that the
topside processor is turned on.
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