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Video and General Performance Verification
WVR6100, WVR7000, and WVR7100 Specifications and Performance Verification
2- 49
This test checks for jitter readout accuracy.
1.
Connect the HDVG1, HDST1 and rasterizer as described in the previous
check,
HD Jitter Noise Floor
, on page 2--47.
2.
Press the DISPLAY SELECT 1 button to select tile 1.
3.
Press and hold EYE (or MEAS if no EYE button), and then select Display
Type > Eye Display.
4.
Press <, and then select Jitter1 HP Filter > 100 Hz.
5.
If the jitter readout is not displayed, press <, and then select Jitter Meter >
Meter & Readout.
6.
Adjust the HDST1 module SDI parameters as follows:
a.
Set the Jitter (LF) Freq to 9950 Hz.
b.
Set the Jitter (LF) Ampl to 3.00 UI.
7.
Check that the jitter readout is between 2.65 UI and 3.35 UI.
8.
Record pass or fail in the test record for the HD Jitter Readout Accuracy.
This test checks for jitter waveform accuracy.
1.
Connect the HDVG1, HDST1, and rasterizer as described in
HD Jitter Noise
Floor
, on page 2--47.
2.
Set tile 2 for Jitter display as follows:
a.
Press the DISPLAY SELECT 2 button.
b.
Press and hold EYE (or MEAS if there is no EYE button), and then
select Display Type > Jitter Display.
c.
Press the DISPLAY SELECT 2 button to close the menu.
d.
Press MAG and FIELD for a sweep rate of 150 us/div.
3.
Adjust the HDST1 module SDI parameters as follows:
a.
Set the jitter (LF) frequency to 9950 Hz and set the jitter (LF) amplitude
to 0 UI.
b.
Slowly increase the jitter (LF) amplitude while watching the Eye display.
As the jitter amplitude increases, the transitions start to get wider and fill
in the space between the transitions. As the jitter amplitude approaches
one UI, the space between transitions disappears (the eye will close). At
one UI of jitter the eye diagram will have “closed”, and a darkening, or
shadow, on an eye trace will appear out of the smeared background.
HD Jitter Readout
Accuracy
(WVR7100 Option EYE
or PHY)
HD Jitter Waveform
Accuracy
(WVR7100 Option PHY)