Carrier 38TXA Guide Guide de l'utilisateur télécharger pdf (Page 179)

Chapter 4 179

Parameter Descriptions

21. RT Use DUPLEX OUT & ANT IN [0=no 1=yes]

21. RT Use DUPLEX OUT & ANT IN [0=no

1=yes]

This parameter allows you to select which RF ports on the test system

will be used for cellular phone tests. A value of 0 causes the RF IN/OUT

port to be used for both forward and reverse channels. A value of 1

causes the DUPLEX OUT port to be used for the forward channel and

the ANT IN port to be used for the reverse channel.

Use of the DUPLEX OUT and ANT IN ports allows the RF link between

the test system and the cellular phone to be established via antennas

instead of coaxial cable.

CAUTION

If the RF link is accomplished with antennas, it must be done inside a

shielded environment to avoid interference with local cellular telephone

service.

Do not overdrive the antenna port’s 200 mW maximum input,

particularly when measuring the maximum RF power of the MSUT.

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Carrier 38TXA Guide Guide de l'utilisateur Page 179