All test equipment requires a 30 minute warm-up period to ensure accurate performance.
This test verifies that the internal pulse modulator's rise and fall time meets specifications.
Pulse modulation rise/fall time is defined as the amount of time it takes the pulse envelope to transition from the 10% pulse envelope level to the 90% pulse envelope level on both the rising and falling edges of the pulse.
During the test, the signal generator is placed in an internal pulse modulation mode at a certain power level and the rise and fall time of the pulse envelope is measured with a high-frequency, digitizing oscilloscope.
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Instrument |
Critical Specifications for This Test |
Recommended Model |
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High Frequency Oscilloscope Mainframe |
6 GHz BW |
Agilent 54750A, 86100A/B/C oscilloscope mainframe |
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Oscilloscope Plug-In |
Time Interval Accuracy |
Agilent 54752A, 83484A, 86117A or B oscilloscope plug-in |
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Pulse Generator |
Rise and Fall time < 1 ns |
Agilent 81130A pulse generator |
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10 dB Attenuator |
none |
Agilent 8491A Option 010 fixed attenuator |
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20 dB Attenuator |
none |
Agilent 8491A Option 020 fixed attenuator |
Connections and Setup Procedures
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All test equipment requires a 30 minute warm-up period to ensure accurate performance. |
In the following test setup, cables are designated as solid lines and direct connections are designated as dashed lines.
1. Connect all test equipment as shown.
2. Connect GPIB cables to all GPIB-controlled test equipment.
3. While performing this performance test, follow all instructions on the controller display.
Setup for Pulse Modulation Rise/Fall Time (using plug-in trigger)
Setup for Pulse Modulation Rise/Fall Time (using mainframe trigger)
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