Extron Electronics MTPX Plus 6400 Series Setup Guide - Manual (Page 24)

Setting MTPX level and peaking using the MTP signal
generator
The simplest and surest way to set the input level and peaking is
to use the included MTP signal generator and the Auto-calibration
utility within the Matrix Switchers Control Program as follows:
NOTE: To manually set the input level and peaking, see
"Manually setting the MTPX level and peaking."
1. Disconnect the power and RJ-45 cables at the MTP transmitter
that is connected to the MTPX Plus input to be adjusted.
2. Connect the two cables to the included MTP signal generator.
3. If the input cable between the transmitter and the MTPX Plus is
longer than 200 feet (60 m), place the Pre-Peak switch on the MTP
signal generator on (up).
Pre-Peak on (up) (shown)
Pre-Peak off (down) Power LED
NOTE: The MTP signal generator does not work on cable
lengths over 400 feet (120 m). Set the level and
peaking to their maximum value of 255.
4. In the Matrix Switchers Control Program,
click Tools > MTPX Picture settings and
then click the Auto-Calibrate Level/
Peaking button.
After a few moments, the program reports whether or not the
calibration succeeded and the original and new settings for the
input level/peaking adjustment.
5. Disconnect the power and RJ-45 cables from the MTP signal
generator and reconnect them to the MTP transmitter.
6. Repeat steps 1 through 5 for each MTPX Plus input.
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.
HINT: The 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.
6. Adjust the skew setting of the leftmost video signal to the right
until all three colors are properly converged.
38 MTPX Plus 6400 • Remote Control and Optimizing the Video 39 MTPX Plus 6400 • Remote Control and Optimizing the Video