Tektronix SPG8000 Technical Reference page 53

SPG8000 Specifications and Performance Verification
d. You should see INPUT-OUTPUT in the menu. If you do not, press the
down (▼) arrow button until it appears.
e. You should see OUTPUT (if allowed) in the menu. If you do, press the
ENTER button. If you do not, press the right (►) arrow button until it
appears in the menu, and then press the ENTER button.
f. Press the down (▼) arrow button until SELECT FORMAT appears in
the menu and then press the ENTER button.
g. You should see NTSC in the menu. If you do, press the ENTER button.
If you do not, press the right (►) arrow button until it appears, and then
press the ENTER button.
h. Press the right (►) arrow button until Black Burst with Field REF
appears, and then press the ENTER button.
i. Press the BACK button twice to exit the menu.
3. Set the REF source of the SPG8000 under test to NTSC Burst as follows:
a. Press the REF button.
b. You should see SOURCE in the menu. If you do not, press the down
(▼) arrow button until it appears.
c. Press the right (►) arrow button until NTSC Burst appears, and then
press the ENTER button.
4. Run the GPS ADC Bus stuck and short diagnostics on the SPG8000 under
test as follows:
a. Press the SYSTEM button.
b. Press the up (▲) arrow button until you see SYSTEM : DIAGNOSTICS.
c. Press the ENTER button to enter the Diagnostics menu.
d. Press the down (▼) arrow button to select GPS ADC BUS.
e. View the results for the Stuck and Short bits.
5. Check the following and record Pass or Fail under Genlock ADC Bus Stuck
and Genlock ADC Bus Short in the test record, depending on the following
conditions:
If all bits in the Stuck field show a "-", they all have activity. Record Pass
in the test record.
If any bits in the Stuck field show an H or an L, then the bit is not moving.
Record Fail in the test record.
If all bits in the Short field show a "-", then none as shorted together.
Record Pass in the test record.
If any bits in the Short field show an S, then record Fail in the test record.
Performance verification
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