Rohde & Schwarz EX-IQ-BOX, User Manual

Page: 354 / 418

Remote Control Commands
R&S
®
EX-IQ-BOX
339 User Manual 1409.5570.32 ─ 05
Example: SOUR1:EBOX:CPRI:TX:SIGN:ARB:FILE?
query the currently loaded wave file.
Response:
p4DQPSK7_68M_OV4_2016Samples.wv
Usage: Query only
Manual operation: See "Wave file" on page 176
[:SOURce<hw>]:EBOX:CPRI:TX|RX:SIGNal<ch>:AXC:ALLocation <Allocation>
Defines how to allocate the AxCs to the signal. R&S DigIConf automatically assigns the
AxCs to a signal, and this parameter specifies the method.
Parameters:
<Allocation> PACKed | FLEXible
PACKed
The AxCs allocate a continuous area inside the CPRI basic frame.
Word address and offset address of the first AxC define the start-
ing position. If possible, the following AxCs are placed succes-
sively. The signal AxCs are automatically laid in a free area of the
CPRI frame. If there is not enough free space, the signal AxCs are
placed at the beginning of the base frame, i.e. at the position of
word 1.
FLEXible
Manually assign the position of the AxCs by word address and
offset address.
Tip: Use this setting, to embed each sample of a signal individually
within the CPRI basic frame.
Range:
1 to 4
*RST: PACKed
Example: SOUR1:EBOX:CPRI:TX:SIGN:AXC:ALL FLEX
selects flexible to manually assign the AxC position.
Manual operation: See "AxC Allocation" on page 180
[:SOURce<hw>]:EBOX:CPRI:TX|RX:SIGNal<ch>:AXC:COUNt:ASSign?
Queries the assigned number of AxCs and the assigned data rate. The assigned data
rate depends on the signal group settings, i.e. on the repetition rate and the number of
active AxCs per group.
The assigned data rate is calculated with the formula:
Data Rate
assigned
[Mbit/s] = 3.84 [MHz] x 2 x I/Q Resolution (
∑
(AxC_on_count
grp
x Repe-
tition
grp
) /
∑
(Repetition
grp
))
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:
Data Rate
assigned
= Sample Rate x Pattern Length
CPRI Remote Control Commands