Tektronix WVR7200, Руководство по обслуживанию

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Adjustments
Composite Analog Input
DC Offset Restore Off
(Option CPS)
Perform the following steps if the Offset is outside the speci fi cation.
1. Press the Con fi g button.
2. Select Utilities > Calibration , and then press SEL to enter the calibration
menu.
3. Navigate to Composite DC Offset and press SEL to automatically adjust
the offset.
4. Follow the instructions at the bottom of the screen to Save and Exit
Calibration mode.
Composite Analog Vertical
Measurement Accuracy
(Option CPS)
Perform the following steps if the Amplitude is outside the speci fi cation.
1. Connect a 100% color bar signal from the precision generator to the Composite
A input. Terminate the loop through with a precision 75
Ω termination.
2. Press the CONFIG button.
3. Navigate to Utilities > Calibration , and then press SEL .
4. Select Composite Waveform Gain , and then press SEL .
5. Follow the on-screen instructions to adjust the gain.
6. Follow the instructions at the bottom of the screen to Save and Exit
Calibration mode.
Composite Analog
Frequency Response
(Option CPS)
Perform the following steps if the Frequency Response is outside the speci fi cation.
1. Connect the precision video generator to one of the CMPST A input
connectors and terminate the other connector with the precision terminator.
2. Set the precision generator for 700 mV Multiburst. The top packet must be
5.75 MHz.
3. Press the CONFIG button.
4. Navigate to Utilities > Calibration , and then press SEL .
5. Select Composite Freq Peak and then press SEL .
6. Follow the on-screen instructions to adjust the response.
7. Follow the instructions at the bottom of the screen to Save and Exit calibration
mode.
8. Repeat the Composite Analog Frequency Response test in the Performance
Veri
fi cation procedure.
WVR7200 Waveform Rasterizer Service Manual 15