Protocol Settings
R&S
®
EX-IQ-BOX
180
User Manual 1409.5570.32 ─ 05
Crest Factor
This parameter is required for the correct display of the
The rms level is calculated with the formula:
RMS [dB] = Peak [dB] - Crest Factor [dB] + Gain [dB]
The crest factor must correspond to the input signal. Enter the value, for example a con-
nected baseband generator provides.
Note:
Crest factor applies to external signals, like digital standards or to user defined
signals. If the R&S
EX-IQ-BOX is working with an internal signal, that is generated by a
pattern or a waveform file, the parameter is already known must not be entered manually.
Remote command:
RMS Level
Indicates the rms level of the signal. The signal level is expressed in terms of an rms
value. It always refers to both signal components:
(SQR(I2+Q2)).
In order to get the RMS value correctly, the
of the signal must be entered.
The rms level is calculated with the formula:
RMS [dB] = Peak [dB] - Crest Factor [dB] + Gain [dB]
Note:
The RMS level refers to external signals, like digital standard or user defined sig-
nals. If the R&S
EX-IQ-BOX is working with an internal signal, that is generated by a
pattern or a waveform file, the parameter is already known must not be entered manually.
Remote command:
Response:
-10 dbFS
AxC Allocation
Define how to allocate the AxCs to the signal. R&S
DigIConf automatically assigns the
AxCs to a signal, and this parameter specifies the method.
"Packed"
The AxCs allocate a continuous area inside the CPRI basic frame. Word
address and offset address of the first AxC define the starting position.
If possible, the following AxCs are placed successively. 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, 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.
Remote command:
AxC(s) / Data Rate
Indicates the needed number of AxCs and the required data rate.
CPRI
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