Agilent Technologies 8922M, S GSM manual Speech, Choices None

13. Speech

NOTE

NOTE

Screens

Audio

This field selects the speech mode.

Choices None

Uncond (unconditioned) activates the MODULATION IN AM/SPEECH connector on the front panel, but the speech signal is not conditioned by filters, and no gain control is provided. Cond (conditioned) activates the MODULATION IN AM/SPEECH connector on the front panel and conditions speech through filters. Gain control is available in the Speech Gain field.

DCAM must be off when Cond is selected. See Screens, RF Generator/RF Analyzer.

To hear the demodulated audio from the mobile station, go to the Audio screen. Under AF Anal In, select SpeechOut. The audio signal will also be available at the Demodulation Out Mon/Speech Out connector.

Echo causes the Agilent 8922M/S to send back the received speech signal to the mobile station. The echo delay is the additional delay the Agilent 8922M/S inserts before sending back speech to a mobile station.

PRBS generates a pseudo random bit sequence which is used for making bit error tests. When selected, a field called PRBS Pattern is displayed (refer to PRBS Pattern field description).

PRBS is selected automatically when Run is selected on the Bit Error Test screen.

None, Uncond, and Cond are not featured in the Agilent 8922S.

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