Checking The Multiplexer Board; Checking The Transmitter Board; Checking The Receiver Boards - Klein 5000 V2 Series Operation And Maintenance Manual

Table of Contents

4-10

CHAPTER 4 Maintenance and Troubleshooting

4.7.1

The Multiplexer board is shown Figure 5-2 on page 5-3. When checking voltages,

unless otherwise noted, use TPGND1 as the ground reference. Reference

designations are printed on the board.

To check the Multiplexer board, do the following:

• Verify that 200 VDC is present on JP8 and that orange LED D40 is

illuminated.

• Verify that +5 VDC is present at L37 and that green LED D37 is

illuminated.

• Verify that -5 VDC is present at L30 and that green LED D38 is

illuminated.

• Verify that +3.3 VDC is present on the output side of L26 and that

green LED D39 is illuminated.

• Verify that +28 VDC is present at TP25. Use TPGND8 as the

ground reference.

• Verify that +2.5 VDC is present at TP9 and that green LED D9 is

illuminated. The +2.5 VDC is generated from the +3.3 VDC.

• Verify that +1.2 VDC is present at TP10 and that green LED D11

is illuminated. The +1.2 VDC is generated from the +3.3 VDC.

In addition, refer to Figure 4-14 for some applicable waveforms.

4.7.2

By probing on the Transmitter board you can check that the transmitters are

working. Probe each transmitter output connector (J5-1, 2; J6-1, 2) to view the two

transmitter outputs. These are floating differential output pairs, so the signal levels

at pin 1 and 2 may be unequal. But all four pins should show transmitter outputs

similar to that shown in Figure 4-14, and you should see a scope trace similar to

the one shown in the figure. You can select different pulse lengths on the System

5000 Control tab of the Sonar Interface dialog box. Note that pulse lengths of 2 ms

and greater are generated at a lower amplitude than shorter pulse lengths. The

altimeter transmitter can be checked at J7-1.

4.7.3

If your sonar image seems to be having problems on one side, this is an indication

that you may have a receiver problem. Try swapping the receiver boards and see if

the problem follows the board.

Series 5000 V2 Sonar System Operations and Maintenance Manual