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Chapter 3, Programming the PCS Interface using GPIB Control
Set Up and Measure
Set Up the Power
Detector
(for TX power
measurements)
Before making a power measurement, the triggering type and data collection
conditions must be set and the
TX:INP:FREQ
must be set so the correct
compensation factors are applied to the measurement. See table 9 on page 88 for
application examples of triggering types and data collection.
1.
Select the trigger type
•
Immediate trigger
- Measurements are started when the instrument is ready after
being instructed to make a power measurement. This type should be used for any
continuous signal measurement.
•
Amplitude trigger
- Measurements start when the PCS Interface detects that the
positive edge of the pulsed signal crosses the trigger threshold. This trigger mode
is useful for signal levels above
−
5 dBm (0.316 mW).
•
External trigger
- The frame clock output from the TDMA Cellular Adapter
provides external trigger control.
NOTE:
The subscriber unit UUT must be in an active link with the Test Set when using the frame
clock for external triggering.
Use the following command string to select the trigger type.
To the PCS Interface>
TX:INP:POW:TRIG <trigger type>
Содержание 83236B
Страница 7: ...vii...
Страница 10: ...x...
Страница 14: ...Contents 14 Error Message 154 Glossary 161...
Страница 30: ...30 Chapter 1 General Information Other Information...
Страница 123: ...123 5 S pecifications Specifications...
Страница 137: ...137 A F requency Conversion Tables Appendix A Frequency Conversion Tables...
Страница 140: ...140 Appendix A Frequency Conversion Tables Frequency Conversion for Signal Generation...
Страница 141: ...141 B M anual Changes Appendix B Manual Changes...
Страница 164: ...Index 164 TX definition 162 TX subsystem 114 TX RX port 25 typical 124 U upconverter definition 162 W warm up time 124...