Atec Anritsu_MT8801C - Manual (Page 8)

8
GSM Audio Test (Option 11)
When using with the MX880115A GSM Measurement
Software, speech Tx/Rx characteristics can be mea-
sured in accordance with GSM Rec. RPE LTP (Full
Rate Speech CODEC).
The audio signal generated by the MT8801C is digi-
tally processed and ideal audio signal is sent. In addi-
tion, this option can also be used to digitally process
an audio signal sent from a GSM terminal for high-reli-
ability and high-accuracy measurement.
Tx Audio Test
The MT8801C can decode an audio signal sent from a
GSM terminal to measure the speech coding charac-
teristics of the DUT.
Rx Audio Test
In this test, the audio signal from the MT8801C is
decoded by the DUT and the speech signal decoding
characteristics are measured.
Audio Echo Test
In this test, the audio signal from the DUT is looped
back by the MT8801C and the characteristics of cod-
ing through encoding is measured.