Tektronix SPG8000 Technical Reference page 63

Black output rise and fall
time test
SPG8000 Specifications and Performance Verification
Perform this procedure to check that the Black output rise and fall time meet
specifications.
Use the same setup as the previous test. (See Figure 9.)
1. Connect the BLACK 1 output of the SPG8000 to the oscilloscope and
terminate the input with a 75 Ω feedthrough terminator.
NOTE.
Make sure that the oscilloscope input is set to 1 MΩ mode if you are using
the feedthrough terminator.
2. Press the BLACK button until you see the BLACK 1 : FORMAT menu.
3. Use the left (◄) or right (►) arrow button to select NTSC.
4. Press the ENTER button.
5. Press the BLACK button until you see BLACK 1-3 : HD TRI-LEVEL
SYNC RATE in the menu.
6. Press the left (◄) arrow button to select Integer, and press the ENTER
button.
7. On the oscilloscope, set the trigger slope to negative and then measure the
10 % to 90 % fall time of the falling sync edge.
8. Record the result in the test record.
9. Press the BLACK button until you can see the BLACK 1 : FORMAT menu.
10. Use the right (►) arrow to select a 1080 60i signal format.
11. Press the ENTER button.
12. On the oscilloscope, set the trigger slope to positive and then measure the
10% to 90% rise time of the rising edge in the middle of the Tri-level Sync.
13. Record the result in the test record.
14. Repeat the above steps for the Black 2 and Black 3 outputs, skipping steps
5 and 6.
Performance verification
49