Tektronix SDA601, Руководство по обслуживанию

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Performance Verification Procedures
SDA 601 Serial Digital Analyzer 3- 13
g. Press the SDA601 " key once to change the second display line to
“On.” Press Enter to confirm the change.
h. Verify
that the “sub-black” region of the picture alternates (“flashes”)
between the original luminance level and white.
i. Press the SDA601 " key once to change the second line to “On, Dim
Video.” Press
Enter
to confirm the change.
j. Verify a reduction (approximately 50%) in the picture brightness. Verify
that the sub-black region of the picture continues to flash, and that the
“over-white” region of the ramp alternates beween its new (50% gray)
level and white.
k. Press the SDA601 " key once more to change the second display line to
“Off.” Press Enter to remove Highlighting from the picture.
12.
Pulse Cross
a. Continuing from the previous procedure, press the SDA B key once to
reach the Video Cursor item of the I/O menu. If this item is set to
“Display,” press
" to change the second display line to “No Display,”
and then press Enter to confirm the change.
b. Press any rectangular SDA601 key to exit the I/O menu.
c.
On the TSG601, press
J
to select the “60% Sweep” signal. Confirm that
the sweep signal is visible on the left “PIX” display of the video
measurement set.
d. Press the SDA601
Pulse Cross
key once; verify that the “horizontal
blanking” region is visible (as a dark vertical band) on the left measure-
ment set display.
e. Press the SDA601 Pulse Cross key once again; verify that the “vertical
blanking” region is visible (as a dark horizontal band) on the measure-
ment set display.
f. Press the Pulse Cross key a third time; verify that both vertical and
horizontal blanking regions are visible on the left measurement set
display.
g.
Press the
Pulse Cross
key one last time to return the picture to normal.
AUX Output.
13.
Pixmon Y (sync amplitude, peak amplitude, DC offset)
Specifications: 300
±
75 mV; 700
±
175 mV;
≤
500 mV
a.
On the TSG601, press
B
to select the 100% Bars signal. Confirm that
the 100% Bars signal is visible on the measurement set PIX display.