Tektronix WFM700 Series, Service Manual

Page: 86 / 194

Performance Verification
2- 54
WFM700 Series Waveform Monitors Service Manual
This test measures jitter at each AES output.
Typical Operation Check.
This test checks for typical operation. Typical values are
not guaranteed characteristics and are not listed in the test record.
1. Connect the SD video generator to INPUT A using a 75
8
cable.
2. Set the SD video generator for a 525-format 100% color bars signal.
3. Set the SD video generator for 2 groups of embedded audio, starting with
group 1.
4. Connect AES 1--2 I/O to the digital audio analyzer unbalanced (UNBAL)
input using a 75
8
cable.
5.
Set the audio analyzer for measurement of jitter per AES3--1992 (or 1997).
6.
Allow the jitter reading to settle for a few second.
7. CHECK for a typical Jitter Peak abs reading of less than 3.5 ns over an
interval of at least 5 seconds.
8.
Move the cable to each of the remaining
AES I/O
connectors and repeat
step 7 for each AES I/O connector.
9. Disconnect the test setup.
This test measures jitter at each AES output.
Typical Operation Check. This test checks for typical operation. Typical values are
not guaranteed characteristics and are not listed in the test record.
1. Connect the HD video generator to INPUT A using a 75
8
cable.
2.
Set the HD video generator for a 1080i 59.94 100% color bars signal.
3. Set the HD video generator for 2 groups of embedded audio, starting with
group 1.
4. Connect AES 1--2 I/O to the digital audio analyzer unbalanced (UNBAL)
input using a 75
8
cable.
5. Set the audio analyzer for measurement of jitter per AES3--1992 (or 1997).
6. Allow the jitter reading to settle for a few second.
7. CHECK for a typical Jitter Peak abs reading of less than 3.5 ns over an
interval of at least 5 seconds.
SD Output Jitter
(WFM7A, WFM7M only)
HD Output Jitter
(WFM7HD only)