Tektronix WVR6020 User Manual

Video and General Performance Verification
Composite Ana
log (Option CPS) Video Tests
Composite Analog
Frequency Response
(Option CPS)
Use Cursors to measure the reference, and the largest and smallest packets on
a multi-burst signal. The greatest deviation from reference is the frequency
response.
1. Press FACTORY on the waveform rasterizer.
2. Press CONFIG, select Graticules and set Cmpst Waveform Graticule Units to
mV.
3. Connect the precision video generator to one of the Composite A input
connectors and terminate the other connector with the precision terminator.
4. Set the precision generator for 700 mV Multiburst. The top packet must be
5.75 MHz.
5. Press the CMPST A, CURSOR and FULL buttons.
6. Adjust cursors to be near the top and zero portions of the waveform.
7. Press 5 X, adjust the lower cursor to align with the bottom o f the reference
step of the waveform.
8. Press 1X, and adjust the vertical position to move the top of the waveform to
the 0 mV graticule. The second cursor should also be near the zero graticule
mark.
9. Press 5X and adjust the upper cursor to align with the top of the reference
step of the waveform.
10. Check the cursor delta readout of the magnitude of the reference step. Note
this number. It should be near 700 mV.
11. Next, adjust the upper cursor to align with the top of the largest packet of
the wavef orm.
12. Press 1X and adjust the vertical position to move the baseline of the waveform
to the 0 mV graticule. The other cursor should also be near the zero graticule
mark.
13. Press 5X and adjust the lower cursor to align with the bottom of the largest
packet of the waveform.
14. Note the cursor delta value for the amplitude of the largest packet.
15. Adjust the lower cursor to align with the bottom of the smallest packet of
the wavef orm.
16. Press 1X, and adjust the vertical position to align the top of the waveform
to the 0 mV graticule.
17. Press 5X and adjust the upper cursor to align with the top of the smallest
packet of the waveform.
18. Note the cursor delta value for the amplitude of the largest packet.
Waveform Rasterizers Specifications and Performance Verification 101

Tektronix WVR6020 Specifications

General

Brand	Tektronix
Model	WVR6020
Category	Measuring Instruments
Language	English