Protocol Settings
R&S
®
EX-IQ-BOX
181
User Manual 1409.5570.32 ─ 05
Depending on the sample rate, a signal needs one or more AxCs to carry its I/Q data. If
possible, R&S
DigIConf automatically assigns the number of needed AxCs to the signal.
Note:
The maximum number of AxCs for all signals is 24.
The needed number of AxCs is calculated with the formula:
MHz
ng
Oversampli
Rate
Sample
ceil
AxCs
needed
84
.
3
The data rate is calculated with the formula:
solution
Q
I
ng
Oversampli
Rate
Sample
s
Mbit
Rate
Data
needed
Re
/
2
/
Note:
For signal source "Pattern" the needed number of AxCs is 1.
Remote command:
(Assigned)
Displays the assigned number of AxCs and the assigned data rate. The assigned data
rate depends on the signal group settings, that means on the repetition rate and the
number of active AxCs per group.
The assigned data rate is calculated with the formula:
OffTime
OnTime
OnTime
Cs
AssignedAx
solution
Re
Q
/
I
MHz
.
s
/
Mbit
Rate
Data
assigned
2
84
3
Note:
In case of "Sync Pattern" signals, the assigned data rate depends on the pattern
length and the sample rate. It is calculated by the sample rate as shown:
Length
Pattern
Rate
Sample
Rate
Data
assigned
Remote command:
Status LED
In case of mismatch between the assigned data rate and the required data rate, the LED
turns red. Blue indicates that the data rates fit.
Note:
Deviations in data rates!. Refer to the example under
, on page 186, on what to do if the status LED turns red.
Remote command:
Show/Hide Group Details
Shows/hides the section with the parameters for group definition.
CPRI
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