RME ADI-6432 REDUNDANT BNC [24/40] Application examples

User's Guide ADI-6432R BNC © RME

13. Application Examples

13.1 Digital AES-3id Multicore

The ADI-6432 is perfectly suited to build up a digital AES multicore. Up to 64 channels can be

realized, transmitted via MADI optical cable lossless and undisturbed to places in a distance of

up to 2.000 meters.

The amount of the total delay from AES to AES depends on the current sample rate.

32 - 48 kHz 64 - 96 kHz 128 - 192 kHz

4 samples 7 samples 13 samples

13.2 Digital AES-3id Breakout Box

As MADI from/to AES/EBU converter the ADI-6432 is an ideal breakout box for RME's HDSP

MADI PCI card. The application breakout box/computer unveils a delay, the so called offset

between playback and recording. If a signal is played back from the MADI PCI, and recorded

again via MADI by performing an AES loopback, the record track will show a specific delay

against the playback track. The reason for this is that the HDSP MADI does signal its own offset

to the application, but not the ones of externally connected devices – which it can't know any-

way.

The following table lists the offset. The values listed here can be entered manually into many

programs, thus giving sample-synchronous simultaneous record/playback functionality. At Dou-

ble Speed and Quad Speed the values rise.

32 - 48 kHz 64 - 96 kHz 128 - 192 kHz

4 samples 7 samples 13 samples

7 samples at 96 kHz equal 73

µs.

4 samples at 48 kHz equal

83 µs.

13 samples at 192 kHz

equal 68 µs.