SWRA370 datasheet(28/34 Pages) TI1

28 / 34 page

PC with LabView

installed

SmartRF Eval Board

and Eval Module

RF Generator

RF Out

Ext 1 In

GPIB

Receive Testing with LabVIEW

www.ti.com

7.4

Energy Detection/RSSI

Purpose: To verify that the energy detection conforms to the published data sheet specifications.

Pass Condition: The mapping from the received power in decibels to energy detection value must be

linear, with a stated accuracy given in the standard.

Test Environment: Figure 18 illustrates the energy detection test setup.

Figure 18. Energy Detection/RSSI Test Setup for LabVIEW

Procedure:

Step 1.

Connect the instruments and test board as shown in Figure 18.

Step 2.

Set the EM in Packet RX mode through SmartRF Studio.

Step 3.

Using LabVIEW, send 1000 packets at a specified data rate from the RF generator and set

the generator signal power.

Step 4.

Read the RSSI value from the SmartRF Studio software interface. This value should correlate

to the sent signal strength.

Table 22. Energy Detection/RSSI with LabVIEW Test Results

Design Specification

Power Detection (dB) | Signal Strength = ____ (dBm)

(dBm)

Pass/Fail?

Freq 1 (MHz)

Freq 2 (MHz)

Freq 3 (MHz)

Test Results:

Basic RF Testing of CCxxxx Devices

SWRA370

– August 2011

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SWRA370 Datasheet(PDF) 28 Page - Texas Instruments