Tektronix CMD 80, Руководство пользователя

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CDMA: Manual Test (Signaling)
CMD 80 Digital Radiocommunication Tester User Manual
3–23
Receiver Quality Configuration Menu. While in a receiver quality test menu, you
can press the CONFIG front-panel key to display the configuration menu for that
particular test (see Figure 3–17).
Figure 3–17: Sensitivity configuration menu
You can use the configuration menu to set the following parameters for the
receiver quality tests:
H
Single shot duration. Press the SINGLE SHOT DURATION softkey to set
the number of frames that are tested. This parameter is used when you
perform a receiver quality test in the single shot mode. The test stops when
the number of frames that you set is reached.
H
Confidence level. Press the CONFIDENCE LEVEL softkey to set the level
of confidence to which you want to test. The tester uses this parameter when
you have selected the single shot mode of operation, and you have turned on
the auto stop function. If the frame errors do not exceed the maximum, the
tester will execute the test until the probability of an acceptable frame error
rate reaches the confidence level that you set. At this time, the tester will
stop the test. (If the confidence level is not reached, the test stops when the
single shot duration is reached.)
Use of the confidence level allows a manufacturer to improve the throughput
of a test station by running the receiver quality test only long enough to
obtain the desired confidence level.
H
Continuous Interval. Press the CONTINUOUS INTERVAL softkey to set the
number of frames that you want the tester to use to compute the frame error
rate for the continuous mode.