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108 Chapter 4
CDMA Measurements - Screens and Control Fields
Qual Event Qual Event
Qual Event
This field selects a trigger qualifier. The trigger qualifier serves as a
precursor to the CDMA analyzer trigger event. Selecting a trigger
qualifier is required when a time-delayed trigger event is desired, or if
the trigger signal is externally supplied at the TRIGGER QUALIFIER
IN connector.
If a time-delayed trigger is used (see the "Trig Event" field on page 112),
the qualifier starts the delay timer. When the timer expires, a trigger
event occurs and a measurement is made.
• None causes the trigger event to be determined solely by the
selection in the Trig Event field.
• 27 ms is an internally generated clock signal.
• 20 ms is an internally generated clock signal.
• 80 ms is an internally generated clock signal (default selection).
• 2 s is an internally generated clock signal.
• Ampl Lo qualifies a trigger each time the input to the CDMA
analyzer rises above −18 dB ADC FS. ADC FS is displayed when the
average power measurement is selected, or when adjusting the Gain
field on the CODE DOMAIN ANALYZER screen.
• Ampl Mid qualifies a trigger each time the input to the CDMA
analyzer rises above −12 ADC FS.
• Ampl Hi qualifies a trigger each time the input to the CDMA
analyzer rises above −6 ADC FS.
• External must be selected if the trigger qualifier is provided by an
external source. The external signal connects to the TRIGGER
QUALIFIER IN connector. A qualifier occurs on the input signal’s
rising edge.
Screens on which this field is present
CDMA ANALYZER
CODE DOM (Code Domain Analyzer): trigger controls menu
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