Merging Hapi MKII, User Manual

Page: 39 / 112

www.merging.com/hapi Page 39
HAPI MKII User Manual
Delay compensation
Input and Output delay are strongly dependent on the Hardware. This implies that if one records a
single source with two different devices at the same time, one will get two slightly out-of-phase tracks.
This is explained by the fact that every device has its own circuitry and different components.
To minimize this issue, Pro Tools implemented an Auto Delay Compensation feature which will
automatically shift the recording depending on the Hardware used.
The IOM-H-PT64 module was made to emulate three different Digidesign interfaces and match every
interface’s actual input/output latency (within a margin of maximum 3 samples). This chart shows what
latency to expect for different setups. Analog/Digital modules latencies are already included in these
measures.
Emulation Mode Routing 44k1/48k 88k2/96k 176k4/192k
None
Input
- 2* smpl. 2* smpl. 2* smpl.
Output
- 2* smpl. 2* smpl. 2* smpl.
192IO
Input
From AD8D 65 smpl. 65 smpl. 65 smpl.
Output
To DA8 24 smpl. 14 smpl. 15 smpl.
HDIO
Input From AD8D 16 smpl. 12 smpl. 11 smpl.
Output
To DA8 56 smpl. 21 smpl. 21 smpl.
HD MADI
Input
From MADI 6 smpl. 6 smpl. 7 smpl.
Output
To MADI 5 smpl. 5 smpl. 7 smpl.
* Added to the other modules used
For the delay compensation to be working, it must be enabled in the ProTools software (Options ->
Delay Compensation).
Emulation Mode
Configures which Digidesign interface the IOM-H-PT64 module will emulate in Pro Tools. This option
does not affect the Hapi routing or preamps, it will just set the Input/Output Delays as seen above.
When set to None, Pro Tools will see the module as an HD MADI, but Hapi will use the minimum
latency. Therefore, Delay Compensation will not be accurate on Pro Tools in this mode.
Error AAE -6116
When Hapi is configured to follow the Sample Rate asked by Pro Tools, an AAE -6116 error might
happen when opening a project with a new Sample Rate. If it happens, click OK to close the error
information. Then, when trying to play the file, the error might show again. After clicking OK, the error
should not appear again.
If this issue is too frequent, a way to avoid it is to disable the Auto-Follow option in Setup -> Formats
and change the Sample Rate on Hapi by hand. This should reduce the probability of getting such an
error.