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June 2004 Isis® Sonar User's Manual, Volume 2 111

Note: For all Isis defaults (shown as italicized entries in Table F-2), be sure to refer

to your manufacturer’s sonar documentation. It may be that your sonar manufacturer’s

recommended settings are more appropriate for your situation.

If you wish to change any of these jumpers, please contact Triton Elics Technical Support

before opening your SIU4.

F.2.3 System Tests Using the SIU4-2

One of the more important functions of the SIU4-2 is to act as a first-level troubleshooting

tool. Through the SIU4-2 you can isolate certain hardware actions that you might suspect

aren’t working properly. In turn, these isolation techniques help you determine whether

you are having hardware or software problems.

After you complete your test, be sure to reset all attenuation switches

back to 0. If you leave any or all attenuation switches at the high (9)

setting, the recording of your images will be impaired—even to the point

of making your imagery worthless for viewing!

If, for example, the imagery you may be observing during an Isis software doesn’t “look

right” to you, you might be having a problem with one or more I/O channels connected to

Isis and the SIU4-2. As a first step in isolating the problem, you can hook up the SIU4-2

in the configuration shown in Figure F-1.

Appendix F: Working with Signal Interfaces

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Triton Isis Manual do Utilizador Página 121