Configuring the Test Set's AUDIO OUT port

Description

The AUDIO OUT connector on the test set's front panel can be configured to carry one of two signals:

• Audio Generator
• FM Demod

By default, the AUDIO OUT connector is configured to carry the output from the built in audio generator. This signal is typically used to stimulate a system to measure its audio performance. When the audio generator's signal is selected for output at the front panel AUDIO OUT connector, use the AFGenerator commands to control the signal.

When testing AMPS systems, it may be useful to configure the AUDIO OUT connector to carry the analog FM Demod signal. This provides the demodulated FM signal for external analysis and baseband processing. Fixed bandwidth bandpass, expandor, and de-emphasis filters can be selected to control the FM Demod signal. When the FM Demod signal is selected for output at the front panel AUDIO OUT connector, use the SYSTem:AUDio:OUTPut commands to control the signal.

For front panel operation, to select the signal source for output to the AUDIO OUT connector, press System Config hardkey, then select Audio Out Port ( F1 ) on the System Config Screen (2 of 2).

Programmatically, to select the signal source for output to the AUDIO OUT connector, use the SYSTem:AUDio:OUTPut:SOURce commands.

Example

 
OUTPUT 714;"SYSTem:AUDio:OUTPut:SOURce AFGenerator" !Selects Audio Generator signal for output
                                                    !at the front panel AUDIO OUT port.