Tektronix WVR6020, Техническое описание

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Incoming Inspection
9. Record Pass or Fail for XGA DAC in the test record.
10. Verify that the following frequencies are within 10 kHz of the nominal values
listed below and that the following widths are within 0.1 µs of the nominal
values listed below:
a. QDR Clock = 25.175 MHz
b. VGA clock = 65.000 MHz
c. Audio PLL1 = 12.288 MHz
d. Audio PLL2 = 12.288 MHz
e. Hsync PW = 2.2 µs
f. Vsync PW = 62.0 µs
g. Lissajous 1 Frequency = 61.4388 MHz (audio option only)
h. Lissajous 2 Frequency = 0.0000 MHz (audio option only)
11. Verify that all the tests in the middle section of the screen have a green Pass
status.
12. Verify that the bus bit activity tests (labeled Channel A, Processor Video, and
Composite Video (if option installed), and appearing at the bottom of the
screen) are as follows:
a. All three tests show both a red and a green bar in each bit location.
b. The Processors Video test shows 8 bits from the CPU, a space, then
Hsync, a space, Vsync, a space and then the blank line. It is normal for
the V sync bit to blink occasionally.
13. Press SEL or cycle the power to reboot the unit.
14. Record Pass or Fail for Advanced Diagnostics in the test record.
Fan Test
If the fault light in the lower left corner of the front panel is not on (Red), then the
fans are running. You should also be able to hear them and feel air coming out the
back of the instrument. At low temperatures the fans will turn slowly and be very
quiet. Record Pass or Fail for Fan Test in the test record.
Waveform Rasterizers Speci fi cations and Performance Veri fi cation 57