Rohde & Schwarz EX-IQ-BOX, Руководство пользователя

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Protocol Settings
R&S
®
EX-IQ-BOX
209 User Manual 1409.5570.32 ─ 05
The I/Q signal data are stored in the R&S waveform format (.wv), the same format as
used in the ARB.
The stored waveforms can be used customer-specific, or replayed in the ARB of the
R&S
EX-IQ-BOX. Use this function for post-processing the signals offline.
Data Source
Select the signal source. All Rx signals are available. In order to record a signal, the signal
must be selected and activated in the respective Rx. Either the uplink signal in CPRI RE
test mode, or the downlink signal of the CPRI REC test mode are possible.
Assign a signal and turn it on with
​
Signal State
The LED next to "Data Source" must be blue. It indicates that the selected signal is active.
Otherwise recording cannot be started.
Remote command:
​
[:
​
SOURce<hw>]:
​
EBOX:
​
CPRI:
​
RECorder<ch>:
​
DATA:
​
SOURce:
​
CATalog?
​
on page 317
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[:
​
SOURce<hw>]:
​
EBOX:
​
CPRI:
​
RECorder<ch>:
​
DATA:
​
SOURce
​
on page 317
Recording Length
Set the length of data trace in samples.
Remote command:
​
[:
​
SOURce<hw>]:
​
EBOX:
​
CPRI:
​
RECorder<ch>:
​
RLENgth
​
on page 319
Trigger Source
Select the trigger source for starting the recording. A trigger event can be initiated by the
software itself or by hardware events.
"Software" Starts the recording immediately after the RECORD button is pressed.
No other event is necessary.
"External Trigger 1...3"
Starts recording with an external trigger event.
External trigger events are generated by the hardware and fed via the
CPRI communication link or at the GENERAL PURPOSE IO interface.
"Tx/Rx Hyper Frame"
Starts recording after a Tx/Rx Hyper frame is received.
"Tx/Rx NodeB Frame"
Starts recording after a Tx/Rx NodeB frame is received.
"Sync Pattern" Starts recording after a specific Sync Pattern is received.
Remote command:
​
[:
​
SOURce<hw>]:
​
EBOX:
​
CPRI:
​
RECorder<ch>:
​
TRIGger:
​
SOURce
​
on page 321
Trigger Position
Determine the position of the trigger event on the waveform. The position provides to
realize a pre-trigger recording, as well as a post-trigger recording. The value is set in
samples from 0 to "Recording Length"-1.
●
Post-trigger , that means position 0 at the beginning of the waveform enables you to
evaluate the signal after the trigger event.
CPRI