Tektronix WFM700 Series, Service Manual

Page: 66 / 194

Performance Verification
2- 34
WFM700 Series Waveform Monitors Service Manual
4. Press the INPUT button and select Input A .
5. Press the EYE button and then touch the Display soft key.
6. Touch the Jitter soft key and then touch the Done soft key.
7. Touch the Hi Pass Filter: soft key and set to 100 kHz .
8. CHECK that the Measured Jitter is approximately 30 ps (typical).
9.
Touch the
Hi Pass Filter:
soft key and set to
10 kHz
.
10.
CHECK that the Measured Jitter is approximately 60 ps (typical).
11. Change the RF generator settings as follows:
Frequency 135.0 MHz
12. Touch the Hi Pass Filter: soft key and set to 10 Hz .
13. CHECK that the Measured Jitter is approximately 200 ps (typical).
This test checks the Eye Time Base Jitter.
Typical Operation Check. This test checks for typical operation. Typical values are
not guaranteed characteristics and are not listed in the test record.
NOTE
. If this test is performed out of sequence or the sequence of tests has been
interrupted (such as power off or input from another module was selected),
perform the steps in this note to prepare the instrument to continue testing.
a. Connect the SD video generator to INPUT B using a 75
8
cable.
b.
Set the SD video generator for a 525-format 100% color bar signal.
c. Press the INPUT button and select Input B .
d. Press the EYE button.
1. Install the 50
8
N-to-BNC adapter on the RF generator output.
2. Connect the RF generator output to INPUT A using a 75
8
cable. Imped-
ance matching is not important for this test.
3. Set the RF generator as follows:
Frequency 741.7582 MHz
Output Level 0 dB
Frequency Modulation OFF
Phase Modulation OFF
RF Output ON
Eye Time Base Jitter
(WFM7M only)