
2201R Mobile Tester SCPI Reference Guide
Chapter 8 Configuration commands
47090/323
Copyright © 2016 Aeroflex Limited. All rights reserved.
129
:CONFigure:GPRS:BER:BITPattern
Syntax
:CONFigure:GPRS:BER:BITPattern <PredefExp>
Parameters
PredefExp is one of the following predefined expressions:
PRBS9|PRBS15|PRBS23|ALLZero|ALLOne|ONEZero|ZEROone.
Default is PRBS9.
Description
This command selects the test bit sequence to be used for the BER measurements.
PRBS9 stands for a pseudorandom bit sequence. The length of this sequence is 511 bits ((2 to the power of 9)-1).
PRBS15 is a pseudorandom bit sequence with a length of 32767 bits.
PRBS23 is a pseudorandom bit sequence as well. The length is 8388607 bits.
ALLZero means that all bits used for testing are zeros (000...).
In case, ALLOne is selected, all bits used for testing are set to ones (111...).
ONEZero stands for a bit sequence starting with a one and continuing with the inverted value of the current bit
(10101...).
ZEROone means a bit sequence starting with a zero and continuing with the inverted value of the current bit
(01010...).
Query
The query form of this command returns the current setting. The string delivered back contains the short-form
version of one of the predefined expressions explained above.
Example
:CONFigure:GPRS:BER:BITPattern ALLZero
:CONF:GPRS:BER:BITP?
Value returned: "ALLZ".