DVL
26
© 2017 Nortek AS
Switch to Command Mode. A confirmation message should now appear. Try connecting to the
instrument as per normal. Check the
DVL Integrator's Guide
for more information about the
command interface.
Test and Analysis function in Windows
1. Click "Start"
2. Click "Control Panel"
3. Click "Network and Sharing Center"
4. Click "Change Adapter Settings"
5. Right-click “Local Area Connection". This icon represents your Ethernet connection to the
instrument
6. Click "Diagnose." The analysis function in Windows will examine the failed connection and show
an explanation of the problem and some advices to fix the problem
Unlike the serial port, once you have verified that the link is active, there is no need to do anything
else with configuring the speed or other link characteristics. The next step is to make sure you have
an appropriate IP address assigned. For details about the process of assigning IP addresses, refer
to the
Appendix
.
Instrument is connected through serial communication cable
Does the instrument have a source of power?
Wrong serial port. Check that the correct serial port is selected. Go to Start - Control Panel -
Systems - Hardware - Device Manager - Ports (look for USB device)
Wrong baud rate. Open a terminal emulator and try to cycle the power on the serial connection. If
gibberish/nonsense or nothing, check the baud rate settings
There is a problem with the converter. Check that the LED on the converter is lit. If not, confirm
that the correct driver is installed.
The blue LED indicator light on the instrument is not lit
Is the instrument in Command mode?
Does the LED blink (short) when applying power?
Cable
Cables are often exposed to heavy use and the power connector might break. Using a multimeter to
test pin to pin through the cable may reveal breakage.
8.2
Network
Firewall
Firewalls are usually active by default and could be a possible cause for blocking communication.
Routers
There are some limitations to the discovery protocol. Multicast Ethernet packets are used to
implement the protocol and those packets may not be forwarded through routers (depending on the
router type and configuration). For that reason, the instrument should be either directly connected or
connected through a single Ethernet switch for troubleshooting. Once the IP address is properly
configured, it can be used to access the instrument using normal IP communications. Only the
discovery protocol uses multicast packets. For more details about the Ethernet communication, refer
to the
Appendix
.
