Video and General Performance Verification Procedures
SD Jitter Readout
Accuracy (Options EYE
and PHY)
1. Set the wavefor
m monitor to a four-tile display by pressing the FULL button.
2. Disconnect the TG2000 DVG1 Clean output from the waveform monitor,
and connect the TG2000 DVG1 Opt S1 output (typically the 2nd output) to
the SDI A input.
3. Press the GAIN button twice to set the Gain to x1.
4. Set the upper left tile to the Eye display:
a. Press the Display Select 1 button.
b. Press the EYE button to view the Eye display.
c. Press and hold the EYE button to display the menu.
d. Select Display Type and then Eye Display.
5. Set the upper right tile to the Jitter display:
a. Press the Display Select 2 button.
b. Press and hold the EYE button.
c. Select Display Type and then Jitter Display.
6. Press and hold the MAG button, select Mag Setting, and then select x10
to set the horizontal magnification.
7. Press the EYE button to close the menu.
8. Press and hold the EYE button, select Jitter1 HP Filter, and then select
100 Hz.
9. Adjust the DVG1 (Opt. S1) module as follows:
a. Select a 525i 59.94 color bar signal.
b. Set the jitter frequency to 9950 Hz.
c. Slowly increase the jitter amplitude while watching the Eye display.
As the jitter amplitude increases, the transitions start to get wider a nd fill in
the space between the transitions. As the jitter amplitude approaches one UI,
the space between transitions disappears (the eye display will begin to close).
At one UI o f jitter (about 3.7 ns) the eye diagram will have ‘closed’, and
a darkening, or shadow, on an eye trace will appear out of the smeared
background. Continue increasing the jitter until another shadow of an eye
appears. You now have 2 UIs of jitter (about 7.4 ns).
Continue increasing jitter to 3 UIs. The TG2K display will read close to
11.1 ns, but do not adjust according to the TG2000 display. A djust instea d
for the sharpest narrow e ye shadow on the Trebuchet display which indicates
the a pplied jitter is precisely 3 UI. This may not be 11.1 ns on the g enerator,
sincetheDVG1modulemaynotbeasaccurate.
Waveform Monitors Specifications and P erformance Verification 109
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