R&S SMJ100A, Руководство по эксплуатации

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Instrument Function
R&S
®
SMJ100A
189 Operating Manual 1403.7458.32 ─ 14
5.4.10.2 Configuration
The "Configuration" section is used to select the type of measurement, the data source
and the termination criteria. If the data is not cyclically continued, the measurement
can be selectively interrupted and restarted. Certain data areas and frames that have
been marked as faulty can be excluded from the measurement.
Mode
Selects the type of measurement: single or continuous measurement.
"Auto" Continuous measurement of bit error rate.
If either or both of the termination criteria are met, the measurement
in progress is terminated and immediately a new one is started auto-
matically. Depending on the settings made, a measurement may take
considerable time. During the first measurement, intermediate results
are displayed. For the measurements that follow, only the final results
are shown. The parameters "Data Bits" and "Errors" are continuously
updated and indicate the relative values for the measurement in pro-
gress.
To start a continuous measurement, use the command
:BERT:
STARt
on page 518. To stop a measurement, use the command
:
BERT:STOP
on page 519.
"Single" Single measurement of bit error rate. The measurement is started by
clicking the "Execute Single" button.
If a measurement is in progress, the current values for "Bit Error
Rate", "Errors" and "Data Bits" are cyclically displayed. The measure-
ment is terminated when either or both of the termination criteria have
been reached.
To start a new measurement, the "Execute Single" button must be
clicked again.
Remote command:
:BERT:SEQuence
on page 514
Max Data Bits
Enter the number of transmitted data bits to be checked before the measurement is
terminated.
This criterion terminates the BER measurement after the specified number of data bits,
even if very few errors or none at all have been detected. With a low number of bit
errors, the measurement result may be statistically unreliable.
If the measurement is terminated because the number of data bits entered here was
checked, "Number of Data Bits" appears to the right of "Terminated By".
Data excluded from the measurement by "Data Enable" or "Pattern Ignore" is not coun-
ted.
Remote command:
:BERT:SETup:MCOunt
on page 517
Max Errors
Enter the number of bit errors to occur before the measurement is terminated.
Bit and Block Error Rate Measurements - BERT Block