MC1000/MC1000-IQ/MC2000/MC2000-IQ
Troubleshooting
Issue 1 Rev 8
Page 167
© 2015 SAM
B.4.2.1
Testing Feedback – Two-channel Audio Processing
By switching on the tone generator on conversion channel 1 audio processor, then using the
conversion channel 2 output as sources for the various audio sources for conversion channel
2, you can test the performance of the audio processing of conversion channel 2.
Similarly, you can test the audio processing of conversion channel 1 by using the audio
processor of conversion channel 2, with tone enabled, as an audio source.
This kind of testing is very useful in the field, where reliable audio test sources may not be
available. Although this is a simple concept, configuring the unit for this test requires care.
Points to consider:
•
Each embedded pair (EMB1/2 to EM15/16) has its own individual tone generator.
•
AES can be balanced or un-balanced (MC2000-IQ balanced AES only). Only four
pairs of AES can be processed.
•
Analog audio processing is limited to four pairs.
•
Analog and AES outputs are derived from Embedded pairs, hence test-tones follow
Embedded audio settings.
•
If audio monitoring equipment is not available, you can use the headphones socket on
the front panel to monitor PCM sources for each audio pair.
Note: The source routed to the headphones socket is configured in the System >
Front Panel menu.
•
Monitoring using the front panel headphones socket is only available for PCM audio.
Converter channel 2
Converter channel 1
EMB 1/2
EMB 3/4
EMB 5/6
EMB 7/8
EMB 9/10
EMB 11/12
EMB 13/14
EMB 15/16
Tone
AES Extract
Analog DAC
AES Extract
AES Embed
Analog ADC
Analog DAC
Audio Test
Headphone
Routing
(Front Panel)
EMB 1/2
EMB 3/4
EMB 5/6
EMB 7/8
EMB 9/10
EMB 11/12
EMB 13/14
EMB 15/16