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Changing the input level/peaking
Users can set the level/peaking value (from 000 through 255) for each input from the Picture
Settings page. Level/peaking can be adjusted to compensate for longer cable runs on the
inputs. Change the level/peaking setting for an input in any of the following three ways:
• Use the auto calibration function as follows:
1. Disconnect the power and RJ-45 cables at the MTP transmitter connected to input
to be calibrated.
2. Connect the two cables to the MTP signal generator (included with most models,
optional for the MTPX Plus 128).
3. If the input cable is longer than 300 feet (91.4 m), place the Pre-Peak switch on the
MTP signal generator to on (up when the RJ-45 connector on the signal generator is
to the right [see figure 86]). If the cable is shorter than 300 feet (91.4 m), place the
switch down.
Pre-Peak on (up) (shown)
Pre-Peak off (down)Power LED
Figure 86. MTP signal generator
NOTE: The MTP signal generator does not work on cable lengths over
400 feet (120 m). Set the level/peaking to its maximum value of 255.
4. Click the Auto button.
• Click the Level/Peaking up button or down button for the
desired input.
• Directly enter a value into the Level/Peaking field.
HINT: Watch a display as you make adjustments.
Toggling output pre-peaking on and off
Users can toggle the pre-peaking value for each output on and off from
the Picture Settings page. Click in the Pre-Peaking check box for the
desire output to toggle the pre-peaking feature on and off for that output.
Pre-peak alters the TP signal output to correct for long cable runs (see
table 1 on page 5 for recommended maximum transmission lengths).
Changing the skew
Users can individually set the red, green, and blue skew setting for each input and output
from the Picture Settings page. The skew settings correct skew delay (misconvergence) problems
commonly encountered when using Category (CAT) 5, 5e, or 6 twisted pair (TP) cables for RGB or
component video transmission
.
MTPX Plus Series • HTML Operation 139