SWRA370 datasheet(18/34 Pages) TI1

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PC with SmartRF Studio

installed

SmartRF Eval Board

and Eval Module

SmartRF Eval Board

and Eval Module

SmartRF Eval Board

and Eval Module

Interference

Source

Shielded Box

Variable

Attenuator

Variable

Attenuator

Sum

Combiner

(1)

Receive Testing Without LabVIEW

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Procedure:

Step 1.

Connect the instruments and test board as shown in Figure 11.

Step 2.

Configure both the TX side and the RX side with the appropriate RF settings. Select the

packet TX or packet RX tab, and select an appropriate packet format.

Step 3.

Start up the receivers first. Ensure that the Seq number included in payload box is checked

(enabled).

Step 4.

Start the transmitter by clicking Start.

Step 5.

The RSSI readout on the RX side provides a relative indicator of the signal strength

Step 6.

The PER is calculated using this formula:

PER % = (No of packets lost/Total number of packets) x 100

Step 7.

Increase the attenuation until the PER reaches 1%. This level defines the sensitivity

threshold.

Table 12. Receiver Sensitivity Test Results

Design Specification

Sensitivity (dBm), PER

< 1%

(dBm)

Pass/Fail?

Freq 1 (MHz)

Freq 2 (MHz)

Freq 3 (MHz)

Test Results:

6.2

Interference Testing

Purpose: To verify that the receiver sensitivity conforms to the published standards.

Pass Condition: See respective standards document for specifications and pass conditions.

Test Environment: Figure 12 illustrates the interference test setup.

(1)

3-dB loss in signal on each input path through the combiner.

Figure 12. Interference Testing Setup

Basic RF Testing of CCxxxx Devices

SWRA370

– August 2011

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