Rohde & Schwarz EX-IQ-BOX, Руководство пользователя

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Application Examples
R&S
®
EX-IQ-BOX
51 User Manual 1409.5570.32 ─ 05
All settings regarding the baseband signal (e.g. LTE) are directly controlled by the R&S
signal generator and analyzer, respectively.
CPRI settings like I/Q mapping or link settings are controlled by the configurator software
R&S
DigIConf.
In addition to the I/Q data, "C&M" ( C ontrol and M anagement) information is embedded
in the CPRI protocol. These parameters are also set with the aid of R&S DigIConf.
An Ethernet connector provides fast C&M, and a RS-232-C connector provides slow C&M
in real time.
5.3 In-Circuit Emulation for Wireless Designs
The following test setup example requires the Cadence Palladium Breakout Board, option
R&S EXBOX-Z3, and the configuration software R&S
DigIConf.
The following example shows a test setup for the emulation of a chip in a software model:
R&S DigIConf
R&S CMW500 Protocol Tester
Breakout Board
R&S EX-IQ-BOX
Frequency reference
R&S IQ format
Digital IQ data
Breakout Board
R&S EX-IQ-BOX
Frequency reference
Clock
Uplink
Downlink
Clock
R&S IQ format
Digital
IQ data
Specific IQ format
Specific IQ format
USB control
USB control
IQ data
IQ data
Fig. 5-4: Application example of an in-circuit emulation of wireless designs
This test setup shows an R&S CMW500, equipped for protocol testing which creates an
I/Q signal. The signal is then converted by an R&S
EX-IQ-BOX and fed to the emulator.
A second R&S EX-IQ-BOX converts the incoming signal from the emulator and feeds it
into the baseband section of the R&S potocol tester. Both R&S EX-IQ-BOX devices are
controlled by R&S DigIConf. For detailed information on this application refer to the oper-
In-Circuit Emulation for Wireless Designs