Instrument Function
R&S
®
SMU200A
192Operating Manual 1007.9845.32 ─ 15
"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 "Block Error
Rate", "Errors" and "Received Blocks" are cyclically displayed. The mea-
surement 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.
SCPI command:
:BLER:SEQuence on page 516
:TRIGger:BLER[:IMMediate] on page 523
Max Received Blocks
Enter the number of transmitted data blocks to be checked before the measurement is
terminated.
This criterion will terminate the BLER measurement after the specified number of data
blocks, even if very few errors or none at all have been detected. With a low number of
block errors, the measurement result may be statistically unreliable.
If the measurement is terminated because the number of data blocks entered here was
checked, "Number of Data Blocks" appears to the right of "Terminated By".
SCPI command:
:BLER:SETup:MCOunt on page 518
Max Errors
Enter the number of block errors to occur before the measurement is terminated.
This criterion terminates the measurement relatively quickly if the error rate is high. The
measurement result is statistically reliable, since many errors were already counted.
If the measurement is terminated because the number of block errors entered here was
reached, "Number of Errors" appears to the right of "Terminated By".
SCPI command:
:BLER:SETup:MERRor on page 519
CRC Order
Selects the byte order of the checksum (CRC).
"LSB"
The checksum starts with the least significant byte.
"MSB"
The checksum starts with the most significant byte.
SCPI command:
:BLER:SETup:CORDer on page 516
BLER Type
Displays the CRC polynomial used. CCITT CRC 16 : G(x) = x
16
+ x
12
+ x
5
+ x
1
is the CRC
polynomial supported.
SCPI command:
:BLER:SETup:TYPE on page 520
Bit and Block Error Rate Measurements - BERT Block
To Next Page
Loading...
