Protocol Settings
R&S
®
EX-IQ-BOX
174
User Manual 1409.5570.32 ─ 05
However, when the R&S
EX-IQ-BOX receives a signal, "Signal Output" is available in the
corresponding tabs instead of "Physical Source". See also
"Sync Pattern"
Use the internal pattern generator as signal source.
"DIG IQ IN 1"
An R&S instrument applies a digital baseband signal at DIG IQ IN 1
connector of the R&S
EX-IQ-BOX.
The green IN/OUT LED of this interface indicates, that it operates in
input mode.
"ARB 1...4"
Selects one of the waveform memories with a loaded I/Q signal.
Note:
●
This feature requires, that the R&S
EX-IQ-BOX is equipped with the
appropriate waveform memory option.
●
A conflict arises, if no signal is loaded in the memory, or is not acti-
vated. The LED next to "Wave File" and "Sample Rate" tuns red.
The Multi Waveform option supports simultaneous playback of up to
four signals. For information on the available options refer to
ter 3.2.2.3, "Waveform Memory, Multi Waveform Playback and Record-
ing Memory "
"Static Frame"
Enables you to fill the complete CPRI frame with a static pattern for
debugging purposes. This pattern is transmitted as it is, without scaling,
rounding or interleaving.
"PRBS"
Generates a PRBS pattern.
If you additionally set
to "BER Test", you can perform a
bit error test with this pattern, to evaluate the signal transmission in the
Rx path.
Remote command:
Signal Output
Select an output interface, to transmit the received baseband signal from the DUT to an
R&S instrument and/or to the built-in I/Q recorder.
The R&S
EX-IQ-BOX extracts the I/Q baseband signal of the CPRI protocol, and forwards
it to an R&S instrument. Simultaneously, you can also record the signal with the I/Q
recorder, see
Note:
You can select "Signal Output" if the R&S
EX-IQ-BOX works as receiver, that
means if it receives a signal from the DUT. That is, if you work in the
RE Test Uplink
or
the
REC Test Downlink
mode. Hence, the parameter is available only in the corre-
sponding DL or UL tab.
However, when the R&S
EX-IQ-BOX transmits a signal, "Physical Source" is available
in the corresponding tabs instead of "Signal Output". See also
"DIG IQ OUT <n> / Recorder"
Selects the digital output interface DIG IQ IN 2 of the R&S
EX-IQ-BOX
to send the signal to an R&S instrument.
The yellow IN/OUT LED of this interface indicates, that it operates in
input mode.
CPRI
Summary of Contents for EX-IQ-BOX
Page 147: ...Protocol Settings R S EX IQ BOX 132 User Manual 1409 5570 32 05 CPRI...
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