HP 8920A - Page 347

347
Chapter 9, Duplex Test Screen
Field Descriptions
Detector
This setting selects the type of detector used when measuring and displaying AF
signal levels.
Detector Types
•
RMS
displays the RMS value of signals.
• displays the RMS value of a signal multiplied by the square-root-of-2.
•
Pk+
displays the positive peak value.
•
Pk−
displays the negative peak value.
•
Pk±/2
adds the positive and negative peak values, and divides the sum by 2.
•
Pk±Max
compares the positive and negative peaks and displays the greater value (po-
larity is not indicated).
•
Pk+ Hold
displays and holds the positive peak value until the measurement is reset.
To reset, press the MEAS RESET key, select a different detector, or re-select the same
detector.
•
Pk− Hold
displays and holds the negative peak value until the measurement is reset.
To reset, press the MEAS RESET key, select a different detector, or re-select the same
detector.
•
Pk±/2 Hold
divides the sum of the positive and negative peak values by 2, and dis-
plays the value until the measurement is reset. To reset, press the MEAS RESET key,
select a different detector, or re-select the same detector.
•
Pk±Mx Hold
compares the positive and negative peaks and displays the greater value
until the measurement is reset. To reset, press the MEAS RESET key, select a different
detector, or re-select the same detector.
Operating Considerations
This is a priority control field. Accessing the RX TEST or TX TEST screen
overrides any changes made to this field in other screens.
See Also
"Interaction Between Screens" on page 54