Testing Voice-Based Office Equipment For Immunity To Interference From Wireless Devices

Abstract

According to some embodiments, a method includes placing a device under test (DUT) in a test chamber and applying a pulse-modulated RF wireless test signal to the DUT in the test chamber. The method further includes detecting an acoustic output of the DUT. In addition or as an alternative to applying the pulse-modulated test signal, the test signal strength may be at a level of 30 V/m or 90 V/m. If the DUT is a telephone, it may be coupled via a voice signal path to another telephone, and an output of the other telephone may also be detected.

1 .- 13 . (canceled) 
     
     
         14 . A method comprising:
 placing a first telephone in a test chamber;   connecting the first telephone to a second telephone that is not in the test chamber;   applying an RF wireless test signal to the first telephone in the test chamber;   detecting an output of the second telephone.   
     
     
         15 . The method of  claim 14 , further comprising:
 detecting an output of the first telephone.   
     
     
         16 . The method of  claim 14 , wherein the test signal is pulse-modulated. 
     
     
         17 . The method of  claim 14 , wherein the test signal has a strength of at least 30 V/m in at least a portion of the test chamber. 
     
     
         18 . The method of  claim 17 , wherein the test signal has a strength of at least 90 V/m in at least a portion of the test chamber. 
     
     
         19 .- 20 . (canceled) 
     
     
         21 .- 27 . (canceled) 
     
     
         28 . A method comprising:
 using a handheld wireless device to generate a sample signal;   recording the sample signal;   placing a device under test (DUT) in a test chamber;   reproducing the recorded sample signal in the test chamber to apply the reproduced sample signal to the DUT as a test signal; and   detecting an acoustic output of the DUT.   
     
     
         29 . The method of  claim 28 , wherein:
 the sample signal is recorded using a vector signal analyzer; and   the recorded sample signal is reproduced using a vector signal generator.   
     
     
         30 . The method of  claim 28 , wherein the sample signal is stored as an IQ file.