6.

Disconnect the Power and RJ-45 cables from the MTP signal generator and

 

reconnect them to the MTP transmitter.

7.

Repeat steps 1 through 6 for each input.

If, for any reason, you choose not to auto calibrate, or if you want to fine tune the adjustment, you can manually set the values as follows:

8.

Connect an oscilloscope (preferred) or a monitor (acceptable) to local output

 

(VGA output) 1.

9.

If using an oscilloscope, apply a white field test pattern to the input to be

 

optimized via an MTP transmitter.

If using a monitor, apply a grayscale or Color Bars test pattern to the input to be optimized via an MTP transmitter.

HThe Extron VTG 300 or VTG 400 are recommended to provide the test pattern.

10. Tie the input to be optimized to output 1.

11. Observe the oscilloscope or the monitor with a critical eye while you adjust the input level/peaking setting to compensate for signal loss between the transmitter and the MTPX.

12. If necessary, repeat steps 8 through 11 for each input.

MTPX skew setting

The MTPX has skew adjustments on the inputs and the outputs. Both should be set to compensate for signal skew across all ties. Adjust input and output skew as follows:

Inputs:

1.

Connect an oscilloscope (preferred) or a monitor (acceptable) to local output

 

(VGA output) 1.

2.

Apply a crosshatch test pattern to the input to be optimized via an MTP

 

transmitter.

HThe Extron VTG 300 or VTG 400 are recommended to provide the test pattern.

3.

Tie the input to be optimized to output 1.

4.

Use the test equipment or examine the displayed video image with a critical

 

eye to determine which video signal — red, green, or blue — is most shifted

 

to the left.

5.

Adjust the leftmost video signal to the right until all three colors are properly

 

converged.

NWhen the skew adjustment is set to zero, the MTPX Plus cannot shift the rightmost video image to the left.

NA 2-nanosecond adjustment is very fine. Up to 10 nanoseconds of delay may be necessary before you detect a change in the display.

6.

If either of the two the remaining colors is left shifted, repeat steps 4 and 5.

7.

Repeat steps 2 through 6 for all other inputs.

Outputs:

8.

Connect an oscilloscope (preferred) or a monitor (acceptable) to the TP output

 

to be adjusted, via an MTP receiver.

9.

Apply a crosshatch test pattern to one the local (VGA) inputs.

HThe Extron VTG 300 or VTG 400 are recommended to provide the test pattern.

MTPX Plus Twisted Pair Matrix Switchers • Matrix Software 5-25

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Extron electronic MTPX Plus Series manual Mtpx skew setting