Remote Control and Optimizing the Video, cont’d
Manually setting the MTPX level and peaking
If you choose not to auto calibrate, or if you want to fine tune the adjustment, you can manually set the values as follows:
1. | Connect an oscilloscope (preferred) or a monitor |
| (acceptable) to local output (VGA output) 1. |
2. | 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.
3. | Tie the input to be optimized to output 1. |
4. | Click Tools > MTPX Picture settings. |
5. | 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. |
6. | If necessary, repeat steps 1 through 5 for each input. |
Setting MTPX skew | |
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. |
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. | If necessary, click Tools > MTPX Picture settings. |
4-20 MTPX Plus Series • Remote Control and Optimizing the Video
6. | Adjust the skew setting of 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
6. | Adjust the skew setting of the leftmost video signal to the |
| right until all three colors are properly converged. |
7. | If either of the two remaining colors is left shifted, repeat |
| steps 4 and 6. |
8. | Repeat steps 2 through 7 for all other inputs. |
9. | Connect an oscilloscope (preferred) or a monitor |
| (acceptable) to the MTPX twisted pair output to be |
| adjusted, via an MTP receiver. |
10. Apply a crosshatch test pattern to one of the local (VGA) inputs on the MTPX Plus.
11. Tie the local input receiving the test pattern signal to the output to be optimized.
12. 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.
13. If necessary, click Tools > MTPX Picture settings.
NWhen the skew adjustment is set to zero, the MTPX Plus cannot shift the rightmost video image to the left.
MTPX Plus Series • Remote Control and Optimizing the Video 4-21
Refer also to the MTPX Plus User’s Manual at www.extron.com. | Refer also to the MTPX Plus User’s Manual at www.extron.com. |
