SWRA370 datasheet(15/34 Pages) TI1

15 / 34 page

PC with SmartRF Studio installed

SmartRF Eval Board

and Eval Module

Spectrum Analyzer

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Transmission Tests

5.4

Transmission Center Frequency Offset

Purpose: To verify that the center frequency offset is within limits.

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

Test Environment: Figure 9 shows the setup for center frequency offset transmission testing.

Figure 9. Transmission Center Frequency Offset Test Setup

Procedure:

Step 1.

Connect the instruments and test board as shown in Figure 9.

Step 2.

Set the EM to continuous TX mode through SmartRF Studio.

Step 3.

Set the center frequency to the desired channel frequency; ensure that the signal is not

modulated.

Step 4.

Measure the actual frequency on the spectrum analyzer. The difference between the actual

frequency and the center frequency is the frequency offset.

Table 9. Transmission Center Frequency Offset Test Results

Design Specification

Channel

Frequency

Frequency Offset

(ppm)

Pass/Fail?

Test Results:

SWRA370

– August 2011

Basic RF Testing of CCxxxx Devices

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SWRA370 Datasheet(PDF) 15 Page - Texas Instruments