Protocol Settings
R&S
®
EX-IQ-BOX
188
User Manual 1409.5570.32 ─ 05
Fig. 7-71: Non Interleaved I/Q data transmission within a CPRI link
Remote command:
AxC Table
Shows the settings of the assigned AxCs. An AxC is defined by the position inside the
CPRI basic frame and its length.
"Source"
Indicates the signal the AxC is assigned to.
"Word Address"
The position of the AxC within the CPRI basic frame is defined by word
address and bit address. The word address specifies, with which word
the AxC begins, while the bit address specifies the bit index inside the
word.
"Bit Address"
Specifies the starting bit inside the word.
"Size /bits"
Displays the size of the AxC in bits. The size depends on the selected
signal source. With the exception of signals from the signal source Sync
Pattern, the size is calculated using the following formula:
2
Re
/
_
signal
axc
solution
Q
I
bit
size
AxC
For Sync Pattern signals, calculate the source with the formula:
signal
axc
Length
Pattern
bit
size
AxC
_
"Conflict"
A conflict arises, when AxCs overlap. A red LED indicates the overlap-
ping with a previous AxC.
Remote command:
Start Condition
Defines the start condition for the scheduler, for data transmission and analysis.
Note:
To define a fractional scheduling scheme, consider the following:
●
align the start of the scheduling scheme either to a Hyper Frame, or a Node B Frame.
●
make sure that the total number of repetitions, for example "1 On"; "3 Off" is an integer
multiple of basic frames inside a Hyper Frame (256) or Node B Frame (38400).
Otherwise
●
use a Sync Pattern in both, the Tx and Rx path.
CPRI
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