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Chapter 4, Description of Fields
Fields
Time/div
This field selects the horizontal sweep time per division.
Operating Considerations
The time-per-division is selected from a list of choices.
Screens Where Field is Present
OSCILLOSCOPE
Time Offset
This field is displayed when Freq Error is selected from the list of choices
available when the unnamed field displaying one of the following choices is
displayed:
• frequency error
• amplitude error
• time offset measurement
The time offset measurement is the timing difference between the beginning of a
Test Set generated frame, as measured at the Test Set’s front panel connector, and
the beginning of the same frame received on the reverse link.
GPIB Example
“DISP CTXT;MEASure:CDManalyzer:TIME:OFFS?“
queries the CDMA time offset measurement result.
Operating Considerations
These measurements, along with rho, phase error, and carrier feedthrough are
made by DSP analysis techniques. The
Meas Cntl field controls these
measurements.
Time offset is referred to as time alignment in the Waveform Quality and
Frequency Accuracy Definition (IS-98).
See Also
Meas Cntl field description, on page 295
Ampl Error
field description, on page 164
Freq Error (Analog) field description, on page 266
Screens Where Field is Present
CDMA CELLULAR MOBILE TRANSMITTER TEST