SmartRF Evaluation Board

USB MCU

PC

Windows OS

CEBAL

USB Driver

SmartRF Studio/

LabVIEW

SmartRF Eval Board

Firmware

CCxxxx Transceiver/

CCxxxx SoC

SPI/

Debug Interface

USB

Cable

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Standards and System Requirements

2.3.2

Initial Conditions for Testing

The device under test (DUT) is connected to the tester via a 50-

Ω connector. If there is no antenna

interface, a temporary 50-

Ω interface or a suitable coupling device (50-Ω load) should be used.

For RX testing, the input reference signal (both as the desired signal and the interference signal) should

have certain characteristics that must be set according to the respective standards document.

Payload content of the desired signal should be a sequence specified by the relevant standard. It must be

identical for all transmitted packets.

In test cases where an interference signal is used, the interference signal characteristics must be defined

by the applicable standards for which the device is being evaluated.

2.3.3

System Communication Overview

The user can communicate with the DUT using SmartRF Studio 7/LabVIEW. These programs

communicates with the evaluation board over the USB interface via the(Chipcon Evaluation Board Access

Layer (CEBAL). This software library contains all the functions required to control the radio device on the

EB. Figure 1 illustrates the connection between a PC and the SmartRF EB.

Figure 1. Interface Between PC and CCxxxx EMs

For proper operation of the applications that use CEBAL, the board must have compatible firmware that

runs on the USB MCU. If the firmware is out-of-date, SmartRF Studio 7 proposes that the user update the

firmware. The firmware update can be done directly in SmartRF Studio 7.

7

SWRA370

– August 2011

Basic RF Testing of CCxxxx Devices

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© 2011, Texas Instruments Incorporated